AT&T DS1/DMi/ISDN-PRI - Manuals

CONTENTS vii Procedure 010 Word 4: Procedure 100 Word 1: Procedure 100 Word 2: Procedure 100 Word 3: Procedure 101 Word 1: Procedure 103 Word 1: Procedure 116 Word 1: Procedure 107 Word 1: Procedure 108 Word 1: GENERIC 2 Line Side (B-Channel) BC and ISDN Routing Options Trunk Group Type, Signaling, ...

viii CONTENTS Procedure 101 Word 1: Procedure 103 Word 1: Procedure 116 Word 1: Procedure 012 Word 1: Procedure 012 Word 2: Procedure 012 Word 3: Procedure 279 Word 1: Procedure 309 Word 1: Procedure 309 Word 5: Procedure 321 Word 1: Procedure 321 Word 5: Procedure 107 Word 1: Procedure 108 Word 1: ...

CONTENTS ix 8 . M A I N T E N A N C E A N D A L A R M S GENERIC 1 AND GENERIC 2 ISDN-PRI MAINTENANCE PHILOSOPHY GENERIC 2 MAINTENANCE CAPABILITIES AND CONCERNS Generic 2 Maintenance Procedures Summary of Generic 2 Maintenance Capabilities GENERIC 1 MAINTENANCE CAPABILITIES AND CONCERNS Generic 1 Mai...

x CONTENTS System 85 DS1/DMI-BOS to a CEM or CDM C . A D M I N I S T R A T I V E P R O C E D U R E S U M M A R Y PROCEDURE 000 WORD 3 (Generic 2 Only) PROCEDURE 000 WORD 4 (System 85 R2V4 & Generic 2) PROCEDURE 010 WORD 4 (System 85 R2V4 & Generic 2) ISDN Routing Parameters (System 85 R2V4 &...

CONTENTS xi D. TRUNK TYPE AND SIGNALING TYPE COMPATIBILITY TABLES A B B R E V I A T I O N S AB-1 G L O S S A R Y I N D E X D-1 GL-1 I N - 1

xii CONTENTS LIST OF FIGURES Figure 1-1. Figure 1-2. Figure 1-3. Figure 1-4. Figure 1-5. Figure 1-6. Figure 1-7. System 85 R2V4 ISDN Configuration Generic 2 ISDN Network Configuration Generic 1 ISDN Network Configuration D4 Framing DS1 Extended Superframe Format DS1 Signal, Framing Format, and ESF S...

CONTENTS xvii LIST OF TABLES TABLE 1-1. TABLE 1-2. TABLE 1-3. TABLE 3-1. TABLE 4-1. TABLE 4-2. TABLE 5-1. TABLE 6-1. TABLE 7-1. TABLE 7-2. TABLE 7-3. TABLE 7-4. TABLE 7-5. TABLE 7-6. TABLE 7-7. 24th-Channel Signaling Arrangement Data-Module Capabilities BCCOS System 85 Traditional Module Equalizer S...

ABOUT THIS DOCUMENT PURPOSE Over the past several years, basic digital signal level 1 (DS1) service has evolved to include new capabilities and thereby support more sophisticated applications. The three prime applications are: 1 . 2 . 3 . Digital multiplexed interface with bit-oriented signaling (DM...

xx ABOUT THIS DOCUMENT INTENDED AUDIENCES Since this document contains information ranging from the brief tutorial to the detailed requirements, it should prove useful to several groups of readers, including: ● ● ● ● ● ● ● Marketing personnel Technical consultants Network engineers Installation pers...

xxii ABOUT THIS DOCUMENT HOW TO USE THIS DOCUMENT How you will use this document will depend on several factors such as the amount of training youhave received or your personal preferences for working with something new. You may want to readthis document from cover to cover, use it merely as a refer...

ABOUT THIS DOCUMENT xxiii Channel Division Multiplexer Installation and Maintenance Manual 365-165-101IS Channel Expansion Multiplexer Installation and Maintenance Manual 365-160-101IS D4-Channel Bank Channel Units — Application Engineering 855-351-105 DEFINITY Communications System Generic 1.1 to 4...

1. INTRODUCTION Digital signal level 1 (DS1) trunks (trunks that carry 24 multiplexed channels on a single 1.544M-bps stream and use a bit-oriented signaling (BOS) interface) were introduced in 1962 to replace olderanalog transmission equipment used between toll offices. At the same time, D-type cha...

1-2 INTRODUCTION The bit stream of the DS1 protocol (1s and 0s) is transported over a DS1 line in a special way. The 1s are represented as alternating positive and negative pulses (called an alternate mark inversion (AMI) or bipolar signal); the 0s are represented as the absence of pulses. Two forma...

INTRODUCTION 1-3 The term ISDN refers to the collection of international recommendations that are evolving toward adoption as a CCITT telecommunications standard. These recommendations are based on the following objectives: 1. 2. 3. To provide the user with end-to-end digital connectivity (which in ...

1-4 INTRODUCTION The BRI terminates at a subscriber’s residence or office. There, it connects either to an ISDNcompatible terminal or to a conventional terminal via a terminal adapter. The BRI channel structureconsists of a 2B + 1D format. Each B or bearer channel provides a 64K-bps information chan...

INTRODUCTION 1-5 Figure 1-1. System 85 R2V4 ISDN Configuration Generic 2 provides a signaling method called nonfacility-associated signaling (NFAS). NFAS allowsa D-channel on one PRI facility (sometimes called a PRI pipe) to provide signaling for B-channels onanother PRI pipe. With NFAS, if two or m...

1-6 INTRODUCTION Figure 1-2. Generic 2 ISDN Network Configuration Generic 1 and Generic 2 provide ISDN-PRI but do not support wideband channels. Additionally,ISDN-BRI is not currently supported in Generic 1. However, end-to-end digital connections are permitted via line-side DCP-interface voice term...

INTRODUCTION 1-7 Figure 1-3. Generic 1 ISDN Network Configuration Channels Each channel transports 8-bit words (signal samples). Signal samples repeat at an 8K-Hz rateyielding a 64K-bps signal. The channels may be used to transmit any of four different types ofsignals.

1-8 INTRODUCTION Voice Analog voice date is encoded into 64K-bps pulse-code modulation (PCM) samples using an encoding technique known as the Mu-255 law. Details of this encoding technique are not given here. The important point is that each DS1channel can transport PCM-encoded 64K-bps voice signals...

1-10 INTRODUCTION Circuit-Switched Versus Packet-Switched Channels A circuit-switched channel provides the full bandwidth of a channel to the single terminating a p p l i c a t i o n o n a n e n d - t o - e n d b a s i s . F o r e x a m p l e , t h e f u l l 6 4 K - b p s B - c h a n n e l b a n d w...

1-12 INTRODUCTION ESF Framing Initially, this format was called F , pronounced “F sub e,” for framing extended. It is now called e extended superframe (ESF). The ESF framing format was developed after the D4 format. Not all equipment used with a DS1/DMI-BOS interface supports ESF. Specifically, most...

1-14 INTRODUCTION The CRC is used at the receive end to detect transmission errors. The CRC is calculated at the transmit end and multiplexed into the DS1 signal. At the receive end, the CRC is recalculated using t h e d a t a i n t h e r e c e i v e d E S F s u p e r f r a m e a n d t h e n c o m p...

INTRODUCTION 1-15 For AT&T proprietary signaling, a complete set of signaling information is sent every 24 frames. This 24-frame period is not synchronized to the 12-frame superframe format of D4 framing or to the24-frame superframe format of ESF framing. Each signaling word contains the equival...

1-16 INTRODUCTION For System 75, the TN722 provides only AT&T proprietary signaling. However, the TN722B can be administered to provide either AT&T proprietary signaling or DMI-BOS. The CCITT Q.921 ISDN-PRI recommendations require that MOS-type signaling be used. In DMI- MOS, signaling is do...

INTRODUCTION 1-17 v(t) + 3 t - 3 0 1 0 1 1 0 1 1 1 Figure 1-7. Alternate Mark Inversion 1s-Density Requirement On the receive side, a DS1 uses the received bipolar pulses of the DS1 signal to recover the 1.544M- bps clock signal that transmitted the bit stream. To do this, the bipolar signal must co...

1-18 INTRODUCTION Restricted Channel A restricted channel is a digital transmission facility restricted to transmissions in which an all-0soctet (eight 0s in a single time slot) is never transmitted. In restricted channels, the line equipment’stransmitters use ZCS line coding. This format monitors t...

INTRODUCTION 1-19 U N C O D E DBIT STREAM 010011 00000000 111 00000000 00000000 01 PULSE STREAM 0 + 0 0 - + 0 0 0 + 0 - + - + - 0 0 0 - + 0 + - 0 0 0 - + 0 + - 0 + VIOLATIONS BASED ON POLARITYOF LAST 1 TRANSMITTED Figure 1-8. Example of B8ZS Line Coding Applications requiring B8ZS line coding are cu...

1 - 2 0 INTRODUCTION Bipolar Violations As noted earlier, the DS1 bit stream is transmitted as a series of pulses. Successive pulses, regardlessof the number of intervening spaces (0s), are of opposite polarity. A bipolar violation is theoccurrence of two consecutive identical pulses, that is, when ...

INTRODUCTION 1-21 TABLE 1-2. Data-Module Capabilities DataModule DMIM o d e User DataR a t e S y n c /A s y n c B i tInvert ProtocolPackaging Handshake Notes D T D MM P D M 2012 300 - 19.2K64K5 6 Kto 19.2K b o t hsyncsyncb o t h y e sy e sn oy e s H D L Cn oDDSH D L C mode 2mode 2mode 2yes 1, 9 MPDM...

1-22 INTRODUCTION The method used to provide ACCUNET ® switched digital service (used by D4-channel banks) also maintains the 1s-density requirement. This method uses only seven of the eight bits for each DS0channel's 8-bit word to carry user data. The remaining bit (8) is “wired” to a 1. (MPDM/M1* ...

INTRODUCTION 1-23 Bearer Capability (BC) System 85 R2V4 introduced the administration attribute known as bearer capability (BC). The p r i m a r y f u n c t i o n o f B C i s t o s p e c i f y t h e t r a n s p o r t m o d e a n d t h e c h a n n e l r e q u i r e m e n t s (clear/restricted) needed...

1-24 INTRODUCTION Generic 1 For information about how BC is done for Generic 1, refer to the A T & T D E F I N I T Y 7 5 / 8 5Communications System Generic 1 and System 75 and System 75 XE Feature Description (555-200- 201). Generic 2 Generic 2 continues the bearer capability concept with bearer...

INTRODUCTION 1-25 TABLE 1-3. BCCOS Switch Parameter Default Value Analog Lines 0 All trunks except Host Access 0 AAR/ARS Preferences 0 Host Access trunks 1 DCP data modules (both lines and trunks) 1 BRI extensions 0 NOTE: Extensions with multiple appearances must have thesame BC administered for eac...

1-26 INTRODUCTION Incoming Calls Incoming ISDN calls are generally processed similar to outgoing ISDN calls. Initially, the called switch receives a setup message over the D-channel and processes the contents of the setup message. The call states of the switch, how the particular trunk groups are ad...

INTRODUCTION 1-27 Administration software also allows services to be dedicated to specific channels by assigning a channel to a particular trunk type. In this way, the switch always provides enough trunks for aparticular type of service. Channels administered for specific services are not available ...

1-28 INTRODUCTION CBC Service Selection CBC trunk groups eliminate the need for dedicating specific B-channels to a particular service. CBC Service Selection can dynamically select individual B-channels (from a group of B-channels) andallocate those B-channels to any of the subscribed services. The ...

INTRODUCTION 1-29 one trunk type is needed, only one trunk group is available, and conventional routing digits areinadequate for the current application (for example, when using the same trunk group toprovide DID, SDN, and DOD). A single trunk type, other than ISDN-dynamic, cannot provide all servic...

1-30 INTRODUCTION 5. 6. 7. 8. Interworking between ISDN-PRI and DCS is a complex issue that is beyond the scope of this document. However, for a combined ISDN-PRI/DCS network, several new ISDN feature andservice options are available. These include: ● Call routing based on BC ● End-to-end ISDN conne...

2. NETWORK CONNECTIONS AND CONFIGURATIONS This chapter provides a description of common connection arrangements with System 85 R2V4, D E F I N I T Y ® Communications System Generic 1 and Generic 2. These connections include private network, public network, and those made through digital signal level...

2-2 NETWORK CONNECTIONS AND CONFIGURATIONS 5 . 6 . 7 . Counting the number of messages and comparing this to other trunks Determining whether a channel is hyperactive Maintenance busying out a virtual trunk group with hyperactive channels or returning clearedchannels to normal service For more infor...

NETWORK CONNECTIONS AND CONFIGURATIONS 2-3 This means that in the exclusive case, the network’s call completes, and the user’s call must eitherwait or find another trunk. In the preferred case, the network’s call completes, and the user’s call is assigned to another trunk in this trunk group that is...

2-4 NETWORK CONNECTIONS AND CONFIGURATIONS administrable but will not work for DMI-to-host-computer applications. Current versions of theAT&T 3B5 and 3B15 computers (DMI) provide E&M trunk signaling and only support the wink- in/wink-out trunk type. Regarding synchronization, the computer mu...

NETWORK CONNECTIONS AND CONFIGURATIONS 2-5 compatibility with other vendor products, operation is usually not guaranteed. The only exception tothis rule is DMI host applications, where the certification process is assumed to have been executedwith the specific computer vendor in question. The certif...

2-6 NETWORK CONNECTIONS AND CONFIGURATIONS DS1/DMI PUBLIC-NETWORK CONNECTIONS Public-network connections may include connections to COs, DACS frames, and toll offices. 4ESS to Another System (Special-Access Connection) Connections to a 4ESS switch are called special-access connections. The physical ...

NETWORK CONNECTIONS AND CONFIGURATIONS 2-7 Screening Intra-LATA Calls A 4ESS can be used to block within the local access and transport area (LATA). This is an inefficient use of the customer’s trunking arrangements, though. System 75, System 85, Generic 1,and Generic 2 special-access applications s...

2-8 NETWORK CONNECTIONS AND CONFIGURATIONS DACS to Another System The DACS may be thought of as an “electronic patch panel” for DS1/DMI-BOS. Cross-connectionsmay be made at either the DS1 (1.544M-bps) level or the DS0 (64K-bps) level. A fully equippedDACS can terminate or cross connect 127 independe...

NETWORK CONNECTIONS AND CONFIGURATIONS 2-9 Since the D4-channel bank is located at the CO end of a DS1/DMI facility, it is the responsibility ofthe CO to set the channel unit attenuators to the appropriate loss values. Chapter 4, The Digital Loss Plan, includes suggested loss ranges for setting thes...

2-10 NETWORK CONNECTIONS AND CONFIGURATIONS When CDMs are used to provide the drop and insert function, they are typically located near where aDS1/DMI-BOS facility leaves the switch and are placed in series with the DS1/DMI signal. TheCDMs allow one or more channels to be inserted into a DS1/DMI fac...

2-12 NETWORK CONNECTIONS AND CONFIGURATIONS The method for selecting the channels that are to be compressed and the channels that are to pass through uncompressed depends on the type of signaling used. Both methods are described as follows. If VBR signaling is used, the assignment of compressed and ...

NETWORK CONNECTIONS AND CONFIGURATIONS 2-13 System 85 or Generic 2 ISDN-PRI to Another Vendor’s Digital Switch When a System 85 or Generic 2 ISDN-PRI connects to another vendor’s customer-premises switch(another vendor’s ISDN-PRI or equivalent), several items should be verified to ensure compatibili...

2-14 NETWORK CONNECTIONS AND CONFIGURATIONS Dial Tone Second dial tone may be provided by a 4ESS. However, it is recommended that the customer- premises switch provide a second dial tone. With this arrangement, the second dial tone can beprovided through use of the ARS feature on all ISDN-PRI trunks...

NETWORK CONNECTIONS AND CONFIGURATIONS 2-15 Network Specific Facility For outgoing calls from the customer-premises side, the 4E11 and 4E12 will accept a network specificfacility (NSF) but do not require that one be present. For call-by-call trunk groups, the 4ESS will check for a NSF and will rejec...

3. DS1 TRANSMISSION AND CABLING Digital signal level 1 (DS1) is the specification for a particular digital signal format. DS1 interfacesshould not be confused with T1 digital carriers. T1 is a specific transmission system. T1s are used to transmit digital signals of the DS1/DMI/ISDN-PRI format. This...

3-2 DS1 TRANSMISSION AND CABLING Digital transmission facilities are used to transmit digital signals from one location to another. Manydifferent digital transmission systems exist of which T1 is one. The type of facility used depends primarily on the distance between the endpoints, but other requir...

DS1 TRANSMISSION AND CABLING 3-3 ● ● ● ● ● ● ● Monitoring of the input DS1 or, when necessary, adding pulses (1s) to ensure that the ones-density requirements are met Removing bipolar violations (which implies incompatibility with B8ZS line coding) Termination of a DS1 or regeneration of received da...

3-4 DS1 TRANSMISSION AND CABLING Because ANN11Ds, ANN11Es, TN722Bs, and TN767s contain components that suppress unwanted emissions from a DS1, standard premises distribution system (PDS) cables may be used to interconnect these interfaces. The PDS wiring may only be used when connecting directly bet...

3-6 DS1 TRANSMISSION AND CABLING The customer is responsibility for maintaining NCTEs. When purchasing service from the LEC, the customer must specify the DS1 framing and line-coding requirements. For off-premises cabling, it is also possible to use any of the connection methods described for “On- P...

DS1 TRANSMISSION AND CABLING 3-7 The transmission system connects to a DS1 via a DSX-1 cross-connect ● ● The transmission system meets any special requirements for the application (for example, thetransmission of bipolar violations if B8ZS line coding must be used) Figure 3-3, Nonmetallic Cabling Co...

3 - 8 DS1 TRANSMISSION AND CABLING DS1/DMI OR D4 C H A N N E L BANK DSX-1 DSX-1 DS1/DMI OR D4 C H A N N E L B A N K C E M DSX-1 ANY DS1 TRANSMISSION MEDIA DSX-1 C E M DS1/DMI OR D4 CHANNEL BANK DSX-1 DSX-1 DS1/DMI OR D4 C H A N N E L B A N K A. CEM ONLY DS1/DMI OR D4 C H A N N E L BANK DSX-1 C D M C...

4. THE DIGITAL LOSS PLAN Transmission loss is required so that talker echo is minimized. Furthermore, transmission loss must be kept low enough so that speech volume is perceived as adequately loud. Transmission loss is thetotal of all losses and gains from one end of a connection to the other. Dist...

4-2 THE DIGITAL LOSS PLAN Some quantity of connection loss is desirable and deliberately engineered into most types of transmission links. The quantity of loss (magnitude and number of dBs) depends on the loss planthat is administered and the particular type of facility involved. Each particular set...

THE DIGITAL LOSS PLAN 4-3 TABLE 4-1. Digital Loss Plan Encodes Encode 0 1 23456 7 8 Loss-Plan Function ANSI/EIA/TIA-464-A-1989Designator The digital fixed-loss plan pad loss is determined — by the trunk type administered in procedure 100, word 1ISL tie trunk S/DTT EIA tie trunk (recommended for ISDN...

4-4 THE DIGITAL LOSS PLAN Loss plan pbx-eia — for private-network-only applications that use analog tie trunks or digital tie trunks pbx-low — for use with combination tie trunks (private networks tandemed with public networks) toll — for use with connections to an analog toll office or digital toll...

THE DIGITAL LOSS PLAN 4-5 TABLE 4-2. Digital Loss Plan (Port-to-Port Losses) TransmitDirection Receive Direction (Values in dB Loss) ONS- L i n e OPS- L i n e ANAL T i e COMB or Analog CO Trunk E I A DCO I S L D T T A T O T R K D T O T R K ISL DCO TRK DTT B A L N BAL T R K On-premises station (ONS) ...

4 -6 THE DIGITAL LOSS PLAN switch will have value only after verification of this switch’s port-to-port loss specification.Conformance with ANSI standards greatly simplifies this process and reduces the likelihood ofcompatibility problems. ● ● The loss between switches is 0 dB over digital facilitie...

THE DIGITAL LOSS PLAN 4-7 OPS Ports Analog off-premises station (OPS) facility requirements specify a loss not to exceed 4 dB in eachdirection. To provide for transmission stability (eliminate singing and echo) with D4-channel units,at least 1 dB of loss in both directions is required from the 2-wir...

5. SYNCHRONIZATION OF DIGITAL FACILITIES The DS1 transmit and receive buffers (for Generic 1 and Generic 2) operate from a single external or internal clock. Each digital switch can accommodate multiple DS1 or T1 spans that link multipleswitches. These may include both ISDN-PRI and DS1 links. Since ...

SYNCHRONIZATION OF DIGITAL FACILITIES 5-3 NOTE: The deletion or repetition of a single frame is termed a slip or a controlled slip. For anindividual digital bit stream, slips are serious impairments since digital switching systems with improperly synchronized clocks will eventually suffer slips on e...

5-4 SYNCHRONIZATION OF DIGITAL FACILITIES 3. 4. 5. Minimum costs Ease of administration Ease of maintenance For the hierarchical method, a node containing a very stable reference frequency is identified as the source or master reference. The master reference is transmitted to another node that is sy...

SYNCHRONIZATION OF DIGITAL FACILITIES 5-9 a duplicated synchronization system, the same DS1 facility provides the primary and secondaryreference for both duplicated halves. Figure 5-5, Duplicated Synchronization Architecture and CrossCoupling, shows a System 85 or Generic 2 with a duplicated archite...

SYNCHRONIZATION OF DIGITAL FACILITIES 5-11 monitored to make sure that a switch is not attempted to an unhealthy SCS. If the SCS is notduplicated and the HAC is healthy, serious failures cause a switch to the HAC to ensure switchreliability. When the SCS can once more lock onto a DS1 reference, a sw...

5-12 SYNCHRONIZATION OF DIGITAL FACILITIES TN768 or TN780 CIRCUIT PACK STRATUM 4A C C U R A C Y C L O C K T O N E G E N E R A T O R MISCELLANEOUST O N E S EXTERNAL S Y N CS O U R C E P R I M A R Y R E F E R E N C E M A I N PHASE- LOCKED L O O P MAIN SYSTEM BUSS EXTERNAL S Y N CS O U R C E SECONDARY ...

SYNCHRONIZATION OF DIGITAL FACILITIES 5-13 ● ● ● ● ● Yellow LED is on 2.7 seconds and off 0.3 seconds — the tone-clock synchronizer is in “active” mode and a DS1 is being used as a synchronization reference. Yellow LED is on 0.3 seconds and off 2.7 seconds — the tone-clock synchronizer is in “active...

5-14 SYNCHRONIZATION OF DIGITAL FACILITIES With automatic reference switching enabled, most Generic 1 error counters are decremented by 1 every 15 minutes and initialized to zero on reaching the threshold value. The following conditions cause an offline reference to be restored to online. 1. 2. 3. T...

5-18 SYNCHRONIZATION OF DIGITAL FACILITIES NETWORK SYNCHRONIZATION AND ENGINEERING The primary goals of network synchronization are: ● ● To keep each digital network node reliable To make sure that each digital termination can meet the network objectives The procedures to achieve these goals include...

SYNCHRONIZATION OF DIGITAL FACILITIES 5-19 DIGITAL SERVING OFFICE EXTERNALLY REFERENCEDNODES SYSTEM 85 OR 75 I N T E R N A L L Y REFERENCED NODES SYSTEM 85 OR 75 DIGITAL TRANSMISSION FACILITY PRIMARY FREQUENCY REFERENCE Figure 5-11. External and Internal Reference Levels For externally referenced no...

5-20 SYNCHRONIZATION OF DIGITAL FACILITIES If there one or more clocks in the network at the lowest stratum level, the following steps can be taken to determine the clock that should become the network reference clock source. Step 1: If there is only one digital switch in the network, that switch is...

SYNCHRONIZATION OF DIGITAL FACILITIES 5-21 RULE 2: A node may use a facility as a backup only if the node at the other end is not using that same facility asa backup. EXAMPLE FOR RULE 2 Figure 5-13, Proper Use of Backup Facilities, illustrates an application of rule 2 and proper use of abackup facil...

5-22 SYNCHRONIZATION OF DIGITAL FACILITIES DIGITAL TRANSMISSION FACILITY P R I M A R Y F R E Q U E N C Y R E F E R E N C E SECONDARY (BACKUP) FREQUENCY REFERENCY Figure 5-14. Improper Use of Backup Facilities Availability is defined as the ratio of the mean time between failures (the average time be...

SYNCHRONIZATION OF DIGITAL FACILITIES 5-23 Facility rank ordering is generally based on limited technical and operational information. It isrecommended that facility selections be based on local field experience where available. In figure 5-14, Improper Use of Backup Facilities, only node C has both...

5-24 SYNCHRONIZATION OF DIGITAL FACILITIES DIGITAL TRANSMISSION FACILITY PRIMARY FREQUENCY REFERENCE SECONDARY (BACKUP) FREQUENCY REFERENCE Figure 5-16. Less Than Optimal Diverse Routing RULE 5: Obtaining both primary and secondary synchronization facilities from within the same transmissioncable sh...

5-26 SYNCHRONIZATION OF DIGITAL FACILITIES RULE 7: The number of nodes receiving synchronization reference from any given node should be minimized. EXAMPLE FOR RULE 7 Figure 5-19, Excessive Synchronization from One Node, shows an excess of synchronization from onenode. If transmission facility linki...

SYNCHRONIZATION OF DIGITAL FACILITIES 5-27 DIGITAL TRANSMISSION FACILITY PRIMARY FREQUENCY REFERENCE SECONDARY (BACKUP) FREQUENCY REFERENCE Figure 5-20. Minimized Synchronization from One Node External-Reference Selection Rules There are seven rules for selecting external synchronization references....

5-28 SYNCHRONIZATION OF DIGITAL FACILITIES AVAILABILITY OF SYNCHRONIZATION SOURCES Misconception 1 Fact 1 Misconception 2 Fact 2 Misconception 3 Fact 3 Misconception 4 Fact 4 The local exchange company (LEC) can always provide the synchronizationsource. The LECs are not always subscribers to the AT&...

SYNCHRONIZATION OF DIGITAL FACILITIES 5-29 CONCLUSIONS ON SYNCHRONIZATION Make no assumptions regarding synchronization. Reverify items such as the availability of asynchronization source, the clock stratum, and compatibility of every T1 span. The best guarantee iswritten confirmation that the local...

5-30 SYNCHRONIZATION OF DIGITAL FACILITIES Line+Trunk Mode DS1/DMI-BOS (ANN35 or TN767 with TN555) Regarding the use of a line+trunk mode DS1/DMI-BOS for synchronization, the following point should be noted. Since it would be expected that a line+trunk mode DS1 would terminate at a class-5 or higher...

6. PORT TYPES/INSTALLATION COMPATIBILITIES This chapter describes the operating modes, installation compatibilities, and port types supported byDS1s. Because of differences between Generic 1 and Generic 2 software and hardware, appropriatedistinctions are identified and separate sections provided. T...

6-2 PORT TYPES/INSTALLATION COMPATIBILITIES Generic 1, Generic 2, CEM, or D4-channel bank). The other line-interface unit connects to the NCTE and T1 facility. Dedicated data applications, both point-to-point and multipoint, can be connected to the CDM andinserted in selected channels. At the receiv...

6-4 PORT TYPES/INSTALLATION COMPATIBILITIES Although the D4-channel bank is compatible with other devices using D4 standards, its most frequentapplication (from this document’s perspective) is as the interface between a DIMENSION ® and DS1 or T1 facilities. The physical connections from the D4 to th...

PORT TYPES/INSTALLATION COMPATIBILITIES 6-5 interface, they differ in their analog voice interfaces (2- or 4-wire) and in the type of E&M (analog)signaling to which DS1/DMI signaling states are converted (type I, II, or III). A Generic 1 analog tie trunk is a 4-wire type I E&M trunk. Thus, a...

6-6 PORT TYPES/INSTALLATION COMPATIBILITIES backplane pins 208 and 224. For J58888N1 List 2 Modification C or later, the carrier is manufactured with the strap always installed on slots 0 and 13. The strap may be field installed on slots 5 and 18, as required. In line-only mode, a DS1 provides the f...

PORT TYPES/INSTALLATION COMPATIBILITIES 6-7 A carrier equipped with two line+trunk DS1s will have four slots available for other port boards inphysical slots 3, 8, 16, and 21. Figure 6-2, P h y s i c a l a n d V i r t u a l C a r r i e r S l o t R e l a t i o n s h i p s ,Line+Trunk Mode, shows the ...

6-10 PORT TYPES/INSTALLATION COMPATIBILITIES Line+Trunk Mode Port Grouping Rules Administration permits assignment of DS1 trunk types in consecutive groups of two. Theseconsecutive groups of two ports are called a port family. The real DS1/DMI and each virtualline+trunk mode slot contain two port fa...

PORT TYPES/INSTALLATION COMPATIBILITIES 6-11 interface. They differ in their analog voice interfaces (2- or 4-wire) and in what type of E&M (analog) signaling to which the DS1/DMI signaling states are converted (type-I, II, or III). A System 85 analog tie trunk is a 4-wire type-I E&M trunk. ...

6-12 PORT TYPES/INSTALLATION COMPATIBILITIES Loop-Start CO Trunk Generic 2 does not provide an analog equivalent of a DS1 loop-start CO trunk. It is only available as a digital trunk. Use of the loop-start CO trunk is not recommended because of inherent glare anddisconnect supervision problems assoc...

PORT TYPES/INSTALLATION COMPATIBILITIES 6-13 channel signaling bits must be passed directly between two DS1/DMI ports without any switchprocessing software interaction. Any DS1/DMI port, regardless of its operating mode, may beswitched into its corresponding transparent mode through administration. ...

6-14 PORT TYPES/INSTALLATION COMPATIBILITIES Port Grouping Rules There are no port grouping restrictions for DMI-MOS trunks. Supported Port Types The DMI-MOS trunks are used to provide high-speed (up to 64K-bps) data connectivity to a host computer. The DMI-MOS trunks are restricted to two types: Wi...

7. ADMINISTRATION OPTIONS AND REQUIREMENTS Administering DS1/DMI/ISDN-PRI services involves configuring the software translations to knowwhat the equipment-carrier configuration and circuit pack types are and what services are to be done. For System 85 R1 through R2V3, switch administration may be d...

7-2 ADMINISTRATION OPTIONS AND REQUIREMENTS G e n e r i c 1 m a y b e a d m i n i s t e r e d f r o m a M a n a g e r I t e r m i n a l o r b y t h e I n i t i a l i z a t i o n a n d Administration System (INADS). Generally, the administration procedures consist of executing thep r o p e r a d m i ...

ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 7 - 3 SYSTEM 85 (R2V1 THROUGH R2V4) This part describes administration options and requirements for System 85 R2V1 through R2V4. Procedure 275 Word 4: ISDN Service — Enable/Disable Procedure 275 is used to translate the system class-of-service (COS...

7-4 ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 Procedure 276 Word 1: Other Feature Groups Procedure 276, word 1, may be displayed to verify which of the optional networking features (such asAAR or DCS) are enabled for the switch. Figure 7-2, Procedure 276 Word 1: Feature Group COS(System 85...

7-6 ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 Field 4 V1-V4 Translates a particular type of carrier (such as DS1/MFAT, module control, or TMS) to the equipment location identified by fields 1-3. For DS1/DMI/ISDN-PRI applications the pertinent encodes are: 4 5 6 7 8 9 TMS 0 control TMS 0 gr...

ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 7-7 System 85 R2V1 and V2 only provide trunks. However, R2V3 and V4 provide trunks, analog OPSlines, and DMI-BOS trunks. System 85 R2V4 (and later versions) provides DMI-MOS trunks; refer to table 7-1, DS1 Administration — Channel Versus Line Assig...

7- 8 ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 Field 5 V 1 - V 2 For DS1, 0 is the only choice. V 3 - V 4 This field is reserved for further use and contains a dash (-). V 1 - V 4 Used for assigning the framing format. The choices are D4 and ESF (previouslyreferred to as F e ). Field 6 The...

ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 7-9 Field 8 V1-V4 Offers the choice of 24th-channel or robbed-bit signaling (RBS). The choice of signaling method used is dependent on the application. The DS1/DMI-BOS applications may be translated for either option. However, ISDN-PRI applications...

7-10 ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 Field 9 V1-V4 Determines which line-coding format will be used to forcibly ensure that the data meets T1-carrier ones-density requirement. The two choices are: ● ● Zero code suppression (ZCS) Bipolar 8 zero code suppression (B8ZS) For a 56K-bp...

ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 7-11 Field 10 V1-V4 This options enables (1) or disables (0) switching between the primary, secondary, or internal high-accuracy clock. The decision to switch from one source to the otheris normally based on an internal slip count calculation (soft...

7-12 ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 slip count of 44 or less and if the secondary and 50% of those DS1s that are enabled for slip enable have reached their maximum slip count of 88, then a switch back tothe primary is made. Field 11 V1-V4 Offers the options external loop not ava...

ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 7-13 Field 14 V3-V4 Field encodes and their descriptions are: 0 Selects the DS1/DMI-BOS channels used for both trunks and lines; the latter isfrequently referred to as OPS. Each DS1/MFAT carrier will support a maximumof two DS1s (slots 5 and 18). T...

7-14 ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 Also, the facility cannot be used as a synchronization reference. When a DS1 is administered for lines (OPS), it provides 24 channels that terminatein a remote D4-channel bank, CDM, or their equivalent. Each analog line circuit pack provides e...

ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 7-15 Field 15 V4 Only Some applications require that the contents of the D-channel be inverted toguarantee that the minimum ones-density be maintained. This field shows whetherthe signaling channel is inverted. Field encodes and their descriptions ...

7-16 ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 Procedure 262 Word 1: ISDN Board Parameters Procedure 262 is used in System 85 R2V4 and Generic 2 to administer DMI-MOS (ANN35) for other service/facility options (DMI-MOS/ISDN-PRI only). Figure 7-5, Procedure 262 Word 1: ISDN Board Parameters...

ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 7-17 Field 5 V4 Only Assigns the interface type or side. The default option is (0) for user side. Alternately, a (1) should be administered for network side. The configuration of the network should be analyzed to determine if the (0) option is appr...

7-18 ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 Field 7 V4 Only This field will accept encodes within the range of 0 through 126. However, allpoint-to-point (nonswitched) links, such as an System 85 R2V4 DMI-MOS link to ahost computer, must be administered with encode 0. Encodes 1 through 1...

ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 7-19 ENHANCED MODE - PROCEDURE: 354, WORD: 3 NPA-NXX ASSIGNMENT 1. 2. 3. 4. NPA-NXX Designator: NPA: NXX: Thousand's Digit: Connected to CC0 ON-LINE enter command: Figure 7-6. Procedure 354 Word 3: NPA – NXX Assignment (System 85 R2V4) Field 1 Fiel...

7-20 ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 Field 4 of procedure 000, word 4, need not be translated when the switch does not transmit SID orconnected number to the network (public or private). If the switch contains more than one office code, multiple NPA/NNX designators may be needed....

ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 7-21 ENHANCED MODE - PROCEDURE: 210, WORD: 2 CONSOLE ASSIGNMENTS - ATTENDANT PARTITIONS 1. 2. 3. 4. 5. Console Number: Attendant Partition: Control: LDN: NPA-NXX Designator: Connected to CC0 ON-LINE enter command: Figure 7-8. Procedure 210 Word 2: ...

7-22 ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 Procedure 010 Word 4: Line Side (B-Channel) BC and ISDN Routing Options Figure 7-9, Procedure 010 Word 4: Terminal COS Restrictions (System 85 R2V4), depicts procedure 010, word 4. ENHANCED MODE - ROCEDURE: 010, WORD: 4 EXTENSION CLASS OF SERV...

ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 7-23 Field 3 This field is used to populate the BC code IE. All endpoints (such as analog lines and DCP voice terminals) must show their information transfer requirements in terms of a BC code. The BC code is the mechanism by which specialized rout...

7-24 ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 ENHANCED MODE - PROCEDURE: 100, WORD: 1 TRUNK GROUP TRANSLATION 1. Trunk Group: DIAL ACCESS CODE/TRUNK ID CODE 2. 3. 4. 5. Digit 1: Digit 2: Digit 3: Digit 4: 6 . 7 . 8 . Trunk Type: Dial Access Restriction: Personal CO Line Appearance: DISPLA...

ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 7-25 Incoming ISDN dynamic trunk type 120 calls (to a System 85) may or may not specify an NSF. Generally, incoming calls from the public network will specify an NSF while calls from the private network will not specify an NSF. For example, if the ...

7-26 ADMINISTRATION OPTIONS AND REQUIREMENT’S — SYSTEM 85 For an ISDN trunk group, a dynamic trunk type (120) can be assigned to the group. This trunk type allows the group to process calls with a different trunk type on a call by call basis. For example, one incoming call over the group may expect ...

ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 7-27 ENHANCED MODE - PROCEDURE: 100, WORD: 3 TRUNK GROUPS - MODEM POOLING AND BCCOS 1. Trunk Group: MODEM POOLING DATA RATE 2. 3. 4. 5. 6. 7. 8. 9. 64K: 56K: 19.2K: 9.6K: 4.8K: 2.4K: 1.2K: 300: LOW: 13. 14. 15. 16. 17. Originate Mode: Answer Mode: ...

7-28 ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 ENHANCED MODE - PROCEDURE: 100, WORD: 3 TRUNK GROUPS - SIGNALING AND OTHER PARAMETERS 1. 2. 3. 4. 5. 6. 7. 8. Trunk Group: Signaling Type: Glare: Retry: Outgoing Maintenance Busy Out Seizure: Incoming Permanent Seizure: Failure Threshold: Opti...

ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 7-29 Field 4 Retry permits multiple attempts to seize a busy trunk from the specified trunk group. This field is primarily applicable for those trunk groups routed over analog facilities and use one of the following trunk types: 41, 42, 43, 46, or ...

7-32 ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 Fields 6-7 Selects in/out touch-tone availability. Field encodes and their descriptions are: 0 1 When only rotary pulses are received via the trunk group When either rotary pulses or tough-tone can be accepted NOTE: The ISDN-PRI applications u...

ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 7-33 Field 15 The APLT type services are not applicable in the ISDN-PRI environment.Therefore, for trunk groups using ISDN-PRI facilities, this field is ignored. Refer to Appendix C, Administrative Procedure Summary, for more information about the ...

7-34 ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 ENHANCED MODE - PROCEDURE: 103, WORD: 1 NETWORK TRUNK GROUP TRANSLATION 1. 2. 3. 4. 5. 6. 7. 8. 9. Trunk Group: Facility Restriction Level: Network Trunk: Main/Tandem: Incoming Tie to AAR/ARS or APLT: Authorization Code Required: Bridge-On All...

ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 7-37 TABLE 7-3. DS1/ISDN-PRI Administration — Channel Versus Trunk Assignments DS1 Channel Slot/Circuit DS1 Channel Slot/Circuit 1 */0 13 *+1/0 2 */1 14 *+1/1 3 */2 15 *+1/2 */3 4 16 *+1/3 5 */4 17 *+1/4 6 */5 18 * +1/5 7 */6 19 *+1/6 8 */7 20 *+1/...

7-38 ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 Field 8 Disables a channel’s signaling. Field encodes and their descriptions are: – 0 1 (Dash) used when ISDN is enabled. Used when signaling is enabled. This is the default option (not used withISDN). Used when signaling is disabled. Use this...

ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 7-39 ENHANCED MODE - PROCEDURE: 012, WORD: 1 NAME DATABASE - NAME TO BE DISPLAYED 1 . 2 . 3 . 4 . 5 . 6 . Extension, VDN, or Trunk Group: Type: Display Start: Outgoing Trunk Display: Copy Mode: Extension, VDN, or Trunk Group to Copy or Share: DISPL...

7-40 ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 Field 4 The main function of this field is to provide some administration control over whatis displayed on the voice terminals digital display. Field encodes and their descriptions are: – 0 1 (Dash) for all incoming only trunk groups. Used whe...

ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 7-41 ENHANCED MODE - PROCEDURE: 012, WORD: 2 NAME DATABASE - ENTRY 1. Segment: CHARATER ENCODES 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. Character 1: Character 2: Character 3: Character 4: Character 5: Character 6: Character 7: Character 8: Character 9: Cha...

7-42 ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 ENHANCED MODE - PROCEDURE: 012, WORD: 3 NAME DATABASE COMPACTION 1. Compact: DISPLAY ONLY 2. Names That Can Yet Be Assigned: 3. Words Available: 4. Words to Be Gained by Compacting: Connected to CC0 ON-LINE enter command: Field 1 Fields 2-4 Fi...

7-44 ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 Procedure 309 Word 5: ARS and ISDN Trunk — Network Characteristics This procedure is required for translating ISDN trunk groups into the ARS plan. Figure 7-20,Procedure 309 Word 5: ARS and Transit Network Identifiers (System 85 R2V4), depicts ...

ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 7-47 Field 10 Specifies either the number (designation) of the interexchange carrier (IXC) or the ISDN Network Service Identifier for the trunk group. The IXC/ISDN network identifier enables the switch to provide equal access capability by populati...

ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 7-49 ENHANCED MODE - PROCEDURE: 107, WORD: 1 ATMS - TERMINATING TEST LINE ASSIGNMENT 1. 2. Trunk Group: Test Line Type: TTL TELEPHONE DIGITS 3. 4. 5. 6. 7 . 8 . 9 . 10. Digit 1: Digit 2: Digit 3: Digit 4: Digit 5: Digit 6: Digit 7: Digit 8: 11. 12....

7-50 ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 ENHANCED MODE - PROCEDURE: 108, WORD: 1 ISDN TERMINATING TEST LINE ASSIGNMENT 1. Trunk Group: TERMINATING TEST LINE TELEPHONE DIGITS 2 . 3 . 4 . 5 . 6 . 7 . 8 . 9 . Digit 1: Digit 2: Digit 3: Digit 4: Digit 5: Digit 6: Digit 7: Digit 8: 10. 11...

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 7-51 GENERIC 2 Depending on whether the switch provides private network ISDN service or public network ISDNservices, whether the switch functions as an endpoint or as a tandem node, will determine whether other features should be administered befor...

7-52 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 Field 14 For Generic 2, field 14 must always be translated. Field encodes and their descriptions are: – (Dash) required when ISDN is not provided. Current policy is to always shipISDN-PRI software with the switch. However, the administration s...

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 7-53 Procedure 250 Word 1: SC/DS1 — Carrier Designation This procedure is used to assign the equipment carriers to a module and cabinet. Additionally, it is used to assign the type of carrier, the carrier port electrical number, and whether the car...

7-56 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 Fields 1-4 Assigns the circuit pack to an equipment location. Table 7-6, Equipment Parameters and Permitted Translation Encodes, depicts the permitted ranges for these encodes. TABLE 7-6. Equipment Parameters and Permitted Translation Encodes ...

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 7-57 Field 7 This field is functionally equivalent to the Per-Channel Signaling and common channel signaling options used with System 85 R2V4. However, the terms havebeen changed to facility associated signaling (FAS) and NFAS. This field is used t...

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 7-59 Field 10 Offers the options slip enable (1) or disable (0). This option enables/disables collection of slip data to support excessive slip rate based on switching between the primary, secondary, or internal high-accuracy clock. The decision to...

7-60 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 Criteria for Switching Back to the Primary Field 11 Field 12 At the end of the 1-hour interval, the slip count is analyzed. If the primary slip count is less than 2, then a switch back to the primary is made. Also, if the primaryhas a slip cou...

7-64 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 Field 18 Loop length refers to the total cable distance between the switch and the NCTE,CDM, BCM32000, DSX-1 cross-connect, and T1 office repeater. Traditionalmodules may contain the ANN11 and/or ANN35 circuit packs. Both circuit packscontain ...

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 7-65 Field 20 This display-only field serves to show which cables contain which synchronization cables. Procedure 262 Word 1: Additional DMI-MOS/ISDN-PRI Facility Options Procedure 262 is used to administer the ANN35 and TN767 circuit packs. Figure...

7-66 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 Field 6 Assigns the interface type or side. The default option is (0) for user side. Alternately, a (1) should be administered for network side. The configuration of the network should be analyzed to determine whether the (0) option is appropr...

7-68 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 ENHANCED MODE - PROCEDURE: 262, WORD: 2 ISDN NFAS/D-CHANNEL BACKUP 1. D-Channel Group Number: PRIMARY D-CHANNEL EQUIPMENT LOCATION 2. 3. 4. 5. Module: Cabinet: Carrier: Slot: BACKUP D-CHANNEL EQUIPMENT LOCATION 6 . 7. 8 . 9. Module: Cabinet: C...

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 7-69 Procedure 262 Word 3: ISDN-PRI Codeset Map Assignments Depending on the terminating switch it may be necessary to administer a Codeset Map Assignmentand convert from one codeset or codepoint to a different codeset or codepoint. This administra...

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 7-71 Procedure 280 Word 1: ISDN-PRI Receive/Transmit Codeset Mapping This procedure is used to translate Codeset Mapping parameters. Figure 7-32, P r o c e d u r e 2 8 0 Word 1: ISDN-PRI Receive/Transmit Codeset Mapping (Generic 2), depicts this pr...

7-72 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 Field 3 Specifies a mapped from codeset number. Permitted encodes are 0 to 7. These numbers correspond to the respective codesets on a number-per-number basis. NOTE: Currently, codeset 1 through codeset 5 are reserved for future use.Thus, only...

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 7-73 N O T E : This word need not be translated unless the application requires that SID or the connected number be transmitted to the network. ENHANCED MODE - PROCEDURE: 354, WORD: 3 NPA-NXX ASSIGNMENT 1. 2. 3. 4. NPA-NXX Designator: N P A : NXX: ...

7-74 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 Procedure 000 Word 4: NPA-NXX Index Designator Depending on how the switch is used, procedure 000, word 4, may or may not be translated. Specifically, word 4, field 4, is used for partitioning, ISDN, or both, and must be translated when: a . T...

7-76 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 Field 3 Assigns the one console in the attendant partition that will be the controlling console. All other members of this group must have control denied. Field encodes and their descriptions are: 0 1 For all but the controlling console Only f...

7-78 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 Fields 4-13 The translation parameters administered for fields 4 through 13 determine what actions the switch will take for the BCCOS specified in field 1. Regarding Generic 2, it is important to remember that the administration (of the BCCOS)...

7-80 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 Procedure 010 Word 4: Line Side (B-Channel) BC and ISDN Routing Options Figure 7-38, Procedure 010 Word 4: Line Side (B-Channel) BC and ISDN Routing Options, depictsthis procedure. ENHANCED MODE - PROCEDURE: 010, WORD: 4 EXTENSION CLASS OF SER...

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 7-81 Field 3 All endpoints (such as analog lines and DCP voice terminals) must show theirinformation transfer requirements in terms of a BC code. The BC code is themechanism by which specialized routing is provided for various categories of calls. ...

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 7-83 Field 6 Defines the trunk type of a specific trunk group. The ISDN-PRI facilities may be used to support several different trunk types. These may include both conventionaltrunk types as well as the ISDN-dynamic trunk type. An important point t...

7-84 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 This trunk type allows flexibility in processing calls as opposed to a fixed static trunk type. Both anA A R / A R S p r e f i x d i g i t ( p r o c e d u r e 1 0 3 ) a n d a D I D a d d i t i o n a l d i g i t ( p r o c e d u r e 1 0 1 ) c a ...

7-86 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 Procedure 100 Word 3: ISDN Trunk Group Signaling Options The trunk type and signaling type attributes are translated as individual parameters. Figure 7-41, Procedure 100 Word 3: ISDN Trunk Group Signaling Options, depicts this procedure. ENHAN...

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 7-87 Field 4 Retry permits multiple attempts to seize a busy trunk from the specified trunk group. This field is primarily applicable for those trunk groups routed over analog facilities and uses trunk types 41, 42, 43, 46, or 47. Depending on the ...

7-90 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 Field 8 Assigns or not assign the trunk group to SMDR record keeping. Field encodes andtheir descriptions are: 0 1 2 Trunk group usage not applicable for SMDR recording Trunk group usage will be recorded by SMDR Trunk group usage will be recor...

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 7-91 ENHANCED MODE - PROCEDURE: 103, WORD: 1 NETWORK TRUNK GROUP TRANSLATION 1. 2. 3 . 4 . 5 . 6 . 7 . 8 . 9 . Trunk Group: Facility Restriction Level: Network Trunk: Main/Tandem: Incoming Tie to AAR/ARS or APLT: Authorization Code Required: Bridge...

7-92 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 Procedure 116 Word 1: DS1/DMI/ISDN-PRI Trunk Assignments F o r m o r e i n f o r m a t i o n , s e e t h e c h a p t e r i n t h i s b o o k e n t i t l e d P o r t T y p e s a n d I n s t a l l a t i o nCompatibilities. Each analog trunk circ...

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 7-93 TABLE 7-10. DS1/ISDN-PRI Administration — Channel Versus Trunk Assignments DS1 Channel Slot/Circuit DS1 Channel Slot/Circuit 1 5/0 or 18/0 13 0/0 or 13/0 2 6/0 or 19/0 14 1/0 or 14/0 3 7/0 or 20/0 15 2/0 or 15/0 4 5/1 or 18/1 16 0/1 or 13/1 5 ...

7-94 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 Field 10 0 1 2 Field 11 Assigns the function of the terminating endpoint. Field encodes and their descriptions are: Another customer premises switch A private network connection to a host computer Public network connections Translates the D-ch...

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 7-95 Field 1 Assigns either an extension number, vector directory number, or trunk group. Fieldencodes and their descriptions are: ● ● Field 2 0 1 Field 3 Field 4 – 0 1 Field 5 0 1 Field 6 000 through 99999, for extension and directory numbers. Whe...

7-96 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 ENHANCED MODE - PROCEDURE: 012, WORD: 2 NAME DATABASE - ENTRY 1. Segment: CHARACTER ENCODES 2 . 3 . 4 . 5 . 6 . 7 . 8 . 9 . Character 1: Character 2: Character 3: Character 4: Character 5: Character 6: Character 7: Character 8: 10. 11. Charact...

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 7-97 ENHANCED MODE - PROCEDURE: 012, WORD: 3 NAME DATABASE COMPACTION 1. Compact: DISPLAY ONLY 2. 3. 4. Names That Can Yet Be Assigned: Words Available: Words to Be Gained by Compacting: Connected to CC0 ON-LINE enter command: Field 1 Fields 2-4 Fi...

7-100 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 Procedure 309 Word 1: ARS Route Tables This procedure is used for translating/controlling the Automatic Route Selection feature. Figure 7- 49, Procedure 309 Word 1: ARS Route Tables, depicts this procedure. ENHANCED MODE - PROCEDURE: 309, WOR...

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 7-101 Field 12 Specifies the number (designation) of the interexchange carrier (IXC)/ISDNNetwork Identifier for this trunk group. Permitted field entries may be any numberwithin the range of 0 through 999. NOTE: The IXC/ISDN network identifier enab...

7-102 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 Fields 1-3 The ISDN-PRI does not place any new or additional considerations on translatingthese fields. The codes and digits translated are generally dependent on each ARSplan and other switch and network considerations. Field 4 Translates th...

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 7-103 ENHANCED MODE - PROCEDURE: 321, WORD: 1 AAR - ROUTE TABLES 1. 2. 3. 4. 5. 6. 7. 8. 9. Pattern Number: Preference Number: Trunk Group: Facility Restriction Level: Warning Tone: Off Net: Number of Digits Deleted: Digit Collect (DC) Signal Ignor...

7-104 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 Procedure 321 Word 5: AAR–ISDN and Other Feature Parameters This procedure is required for translating ISDN trunk groups into the AAR plan. Figure 7-52, Procedure 321 Word 5: AAR–ISDN and Other Feature Parameters, depicts this procedure. ENHA...

ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 75 7-107 SYSTEM 75 (R1V2 AND R1V3) System 75 has the same facility considerations (framing, signaling, line coding format, etc.) as System85 or Generic 2 and many similar equipment considerations (both require an additional clock circuitpack for synch...

7-108 ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 75 Location A display-only field specifying the carrier and slot of a DS1. Name The name as shown on the network diagram. Line Refers to the distance between the switch and the NCTE, CDM, CEM, DSX-1 Compensation cross-connect, T1 office repeater...

ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 75 7-109 Signaling The default option is common-channel. This option is the same as 24th-channel or Mode AVD for System 85. The alternate choice is robbed-bit. The choice of signaling mode used is dependent on the application. Common-channel signaling...

7-110 ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 75 Maintenance Options or Parameters Slip This option enables (y) or disables (n) switching between the primary, secondary, Detection and internal high-accuracy clock. The decision to switch from one source to theother is based on an internal sl...

ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 75 7-111 SYNCHRONIZATION PLAN Page 1 of 1 SYNCHRONIZATION SOURCE (DS1 circuit pack location) Primary: _ _ _ Secondary: _ _ _ DS1 CIRCUIT PACKS L o c a t i o n N a m e S l i p L o c a t i o n N a m e S l i p _ _ __ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _...

7-112 ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 75 Trunk Group/Trunk Group Members For System 75 R1V2 and R1V3, there are three applications for a DS1 (tie and DMI); refer to table7-6, Equipment Parameters and Permitted Translation Encodes. The DS1 tie trunks are defined by using Page 1 of th...

ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 75 7-113 Trunk Type Establishes the physical type of incoming and outgoing trunks. For tie trunk (in/out) applications, field encodes and their descriptions are: ● Auto ● Immed-start ● Wink-start ● Delay-dial Figure 7-58, Trunk Group Screen, Page 2, d...

7-114 ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 75 The DS1/DMI trunks are defined by using the T R U N K G R O U P screen. This screen is somewhat equivalent to System 85 procedure 260, field 14, encode 1. Figure 7-59, Trunk Group Screen, Page 1 (DMI), depicts this procedure. TRUNK GROUP Page...

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 1 7-115 GENERIC 1 Generic 1 has the same DS1 facility considerations (such as framing, signaling, line coding format) as S y s t e m 7 5 . I t a l s o r e q u i r e s t h e a d d i t i o n a l c l o c k c i r c u i t p a c k f o r s y n c h r o n i z...

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 1 7-117 Location A display-only field specifying the carrier and slot of the DS1 Interface. Name The name as assigned on the network diagram. Line Refers to the distance between the switch and the network channel-terminating equipment (NCTE), CDM, CE...

7-118 ADINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 1 Signaling The default option is common-channel. This option is the same as 24th-channel or Mode AVD for System 85. The alternate choices are ISDN-PRI and robbed-bit. If ISDN-PRI is optioned, then the DMI-BOS field disappears and the Connect fi...

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 1 7-119 Interface This field is not available unless the Connect field is translated pbx. Field encodes and their descriptions are: ● ● user (default option) network NOTE: For ISDN-PRI private network connections, additional care mustbe exercised in ...

7-120 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 1 SYNCHRONIZATION PLAN Page 1 of 1 SYNCHRONIZATION SOURCE (DS1 circuit pack location) Primary: _ _ _ Secondary: _ _ _ DS1 CIRCUIT PACKS Location Name Slip Location Name Slip _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ...

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 1 7-121 Trunk Group/Trunk Group Members — DS1 Trunk Applications For DS1/DMI applications the TN722_ circuit pack emulates three categories of trunk types, while the TN767 circuit pack emulates three additional trunk types; refer to table 6-1, Suppor...

7-124 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 1 Port This field associates each trunk group member to a particular network (1 or 2), carrier (A-E), slot (01-20), and circuit (01 -24). To keep things simple, try to matchtrunk group member and DS1 channel assignments (for example, trunk grou...

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 1 7-125 DATA MODULE Page 1 of 1 Data Extension: ______ Type: procr-infcPhysical Channel: _ _ _ Name: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ COS: 1 COR: 1 Maintenance Extension: _ _ _ _ _ ABBREVIATED DIALING List1: ____________ HOT LINE DESTINATION Abbreviated...

7-126 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 1 PROCESSOR CHANNEL ASSIGNMENT Page 1 of 4 Proc Chan Interface Link Chan Remote Proc Chan Appl. Priority Machine-ID 1: 2: 3: 4: 5: 6: 7: 8: 9: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _...

7-128 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 1 Trunking Considerations — ISDN-PRI Applications It is necessary to determine those types of ISDN-PRI network services desired before attempting tobuild the ISDN-PRI trunk groups. Some of the more significant considerations should include the ...

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 1 7-129 accommodated with a single trunk group, and that trunk group is provided with allocation and scheduling controls, then significant trunking efficiencies are realized by distributing the traffic overthe total number of available trunks. CBC Us...

7-130 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 1 Facility The ISDN-PRI specification further requires that each service or feature be Coding identified as a: ● ● ● ● Parameterized Service Parameterized Feature Binary Service Binary Feature The facility coding values, listed on the NETWORK-F...

7-132 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 1 SendDisplay/TCMin Codeset 6/7 Max Message Sizeto Send This field maps the display information (codepoint 8) and the TCM information (codepoint 40) to codeset 6 or codeset 7, depending on whether a 6 or a 7 is translated. The distant switch wi...

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 1 7-133 TRUNK FEATURES Page 2 of 11 ACA Assignment? Short Holding Time (secs.): MIS Measured? Used For DCS? Maintenance Tests? n 1 0 n n y Long Holding Time (hours): Short Holding Threshold: Internal Alert? PBX ID: 1 Data Restriction? Send SID? Send ...

7-134 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 1 Send Name This field determines whether the calling (originating) party’s administered name is sent to the network for outgoing calls and whether the connected (answering) party’sname is sent to the network for incoming calls. Field encodes a...

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 1 7-135 Called Generally, this field only specifies some of the leading digits that are contained in Number the called-party number IE. The digits received must match, on a digit-per-digit basis, what is administered in this field. Field encodes and ...

7-136 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 1 Insert The digits inserted before the Called Party Number IE. This specifies the digits prepended to the front of the remaining digits after any (optional) digit deletion hasbeen performed. The resultant number formed from digit deletion/inse...

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 1 7-137 ● Called Number field is specified with M leading digits, where M is a number of digits less than N(for example, the three digits 855). NOTE: The screen that follows these case examples depicts a line entry (Service/Feature, Called Len, Calle...

7-138 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 1 Case 4 ● ● ● Service/Feature field is specified (for example, mega800). Called Len field is not specified (that is, left blank). Called Number field is not specified (that is, left blank). Application for Case 4 being selected Assume the swit...

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 1 7-139 ● ● Called Len field is not specified (that is, left blank). Called Number field is not specified (that is, left blank). NOTE: Case 8 is the least restrictive (nonrestrictive) and will match all calls not handled by any other case. Applicatio...

7-140 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 1 N O T E : A l t h o u g h e a c h u s a g e a l l o c a t i o n p l a n m a y c o n t a i n u p t o 1 0 e n t r i e s , a g i v e n Service/Feature may only be listed once per plan. Many other scenarios may be developed for applying a plan. V...

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 1 7-141 Min# Chan This field reserves a specified number of trunk group members that are to always be available to the associated Service/Feature. Permitted numbers are any number within the range of 0 to 99. NOTE: For each allocation plan, the sum o...

7-142 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 1 CBC TRUNK GROUP USAGE ALLOCATION PLAN ASSIGNMENT SCHEDULE Page 4 of 11 Usage Method: Fixed? Scheduled? yn Allocation Plan Number: 1 Usage Allocation Plan Activation Schedule: Act Time Plan # ActTime Plan # ActTime Plan # Act Time Plan # ActTi...

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 1 7-143 Act Time Specifies the time that the associated usage allocation plan will become effective.Time must be specified in 24-hr format. Permitted entries are 00:00 through 23:59. Plan # NOTE: Each day of the week must have at least one entry, but...

7-144 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 1 Port This field associates each trunk group member to a particular network (1 or 2),carrier (A-E), slot (01-20), and circuit (01-24). To keep things simple, try to matchtrunk group member assignments with B-channel assignments (for example, t...

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 1 7-145 Permitted entries are single digit numbers less than or equal to the numberadministered in the Page Length field of the DIAL PLAN RECORD screen. For example, if the Page Length field is translated five (meaning a five digit numbering plan), t...

7-146 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 1 SID PREFIX TABLE Page 1 of 5 ExtLen ExtCode SIDPrefix ExtLen ExtCode SIDPrefix ExtLen ExtCode SIDPrefix 5 5 _ _ _ _ _ _ _ _ _ _ _ _ _ _ 31 41 _____ _____ _____ _____ _____ _____ _____ _____ _____ _____ _____ _____ _____ _____ 2012353000 20123...

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 1 7-147 ROUTING PATTERNS Page 1 of 1 Pattern Number: __ Pattern Assignments (Enter Up To 6) Grp.No. FRL N P A Prefix Mark Toll List No. Del Digits Inserted Digits IXC 1. 2. 3. 4. 5. 6. _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _...

7-148 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 1 Prefix Mark This field is only used for public network (ARS) applications. The Prefix Mark relates to the ARS Prefix 1 Required? field on the DIAL PLAN RECORD screen. If the ARS Prefix 1 Required? field is translated y, then (for certain type...

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 1 7-149 BCC Values Each routing pattern preference (1 through 6) has an associated BCC Value field. Therefore, when a preference is translated, the associated BCC must also be translated. A trunk group preference must be valid for one or more BCC val...

7-150 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 1 HUNT GROUP Page 1 of 6 Group Number: Group Name: Security Code: Queue? ISDN Caller Disp: _ _________________ _ _ _ Group Extension: Coverage Path: Message Center: _ _ _ __ _ _n o n e_ _ _ _ Group Type: used COR: 1 ACD? n n Night Service Desti...

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 1 7-151 TERMINATING EXTENSION GROUP Page 1 of 1 Group Number: Group Name: Security Code: ISDN Caller Display: __ _______________ ______ ______ Group Extension: Coverage Path: COR: _ _ _ ____1 _ GROUP MEMBER ASSIGNMENTS 1:2: Ext _ _ _ _ _ _ _ _ N a m ...

8. MAINTENANCE AND ALARMS This chapter describes general maintenance items. For solutions to other problems not covered in t h i s c h a p t e r o r f o r a d d i t i o n a l i n f o r m a t i o n a b o u t a s p e c i f i c p r o b l e m , r e f e r t o D E F I N I T Y ® Communications System Gener...

8-2 MAINTENANCE AND ALARMS maintenance activities. Digital circuit packs are able to detect and report errors occurring on boththe circuit pack itself and on the digital transmission facility. The circuit packs are also able torestore service automatically when and if any detected faults should clea...

MAINTENANCE AND ALARMS 8-3 When procedure 620 is used the following points should be understood: ● ● ● Procedure 620 consists of five separate tests, identified as tests 1 through 5. Tests 1, 2, and 3 may be done without affecting service. Tests 4 and 5 affect service. Test 1 checks all DS1s or DMIs...

8-4 MAINTENANCE AND ALARMS ● ● Tests 4 and 5 will light the red LED on the circuit pack when facility errors cause procedure620 to fail. Depending on the type of errors, other LEDs may be in their alarm state.However, the circuit pack should not necessarily be replaced, because pulling the circuitpa...

MAINTENANCE AND ALARMS 8-5 3 Demand maintenance busy (busy-out from a procedure) 4 Auto maintenance busy (busy-out from call processing) 5 Far-end maintenance busy 6 Trunk in transitory state (T-limbo) Additional trunk status is available in field 10; for example, if test status = 5, then protocol n...

8-6 MAINTENANCE AND ALARMS GENERIC 1 MAINTENANCE CAPABILITIES AND CONCERNS Generic 1 provides the same functional maintenance capabilities (such as error detection, errorlogging, error testing, and alarm reporting) as Generic 2. However, because of hardware andsoftware differences and because Generi...

MAINTENANCE AND ALARMS 8-7 Summary of Generic 1 Maintenance Capabilities Since Generic 1 implements the same DS1, DMI, and ISDN-PRI protocols as Generic 2, both switches provide the same maintenance capabilities. Since Generic 1 DS1s provide conprehensivedetection capabilities, the switch usually de...

8-8 MAINTENANCE AND ALARMS Facility Alarms There are several types of facility alarms that may arise. These are briefly described next. Excessive Slips Data received from a DS1 facility is stored (clocked) into buffers on the circuit pack using a clocksignal derived from the received signal. Data is...

MAINTENANCE AND ALARMS 8-9 One frequent cause of this alarm is an incorrect setting of the framing option at one end of the transmission facility (for example, the near end set for the D4 and the far end set for ESF, or vice-versa). This scenario will cause the LFA at both ends of the transmission l...

8-10 MAINTENANCE AND ALARMS Blue Alarm The blue alarm shows that maintenance activities are in progress and that the out-of-service condition exists for that DS1 facility. This alarm is recognized as a continuous stream of 1s with no provisions for framing. Depending on the particular NCTE being use...

A. ADMINISTRATION REQUIREMENTS The following screens detail System 75 (R1V2 and R1V3) special-access administration requirements for implementing a Software Defined Network (SDN), MEGACOM ® s e r v i c e , M E G A C O M 8 0 0 service, and MEGACOM 800 dialed-number identification service (DNIS) conne...

A-2 ADMINISTRATION REQUIREMENTS Line Relates to the distance between the switch and the network channel-terminating Compensation equipment (NCTE), channel-division multiplexer (CDM), channel-expansion multiplexer (CEM), or a digital signal level 1 (DS1) cross connect field (called a DSX-1). Refer to...

ADMINISTRATION REQUIREMENTS A-3 TRUNK GROUP Page 1 of 5 Group Number: Group Name: Direction: Dial Access? Queue Length: Comm Type: (number assigned)MEGACOM 800 Group Type: tie SMDR Reports? y COR: 1 TAC: 189 1 -way in y0 voice Outgoing Display? y Busy Threshold: 60 Data Restriction? n Night Service:...

B. SAMPLE INSTALLATION AND MAINTENANCE PROBLEMS Based on field experience, most problems can be categorized into three general areas: ● Translations-based problems ● Synchronization-related problems ● Physical interfacing connection problems This appendix is organized so that there are additional su...

B-2 SAMPLE INSTALLATION AND MAINTENANCE PROBLEMS ● Versatility ● Complexity of installation ● Administration ● Operation ● Type of alarms When a DS1/DMI facility fails to operate (because of a line failure), the first choice in diagnosing theproblem is to check the translations. Mistakes in translat...

SAMPLE INSTALLATION AND MAINTENANCE PROBLEMS B-3 OPTIONS: OPTIONS: ● ● ● ● D4 FRAMING PER-CHANNEL SIGNALING ROBBED-BIT SIGNALING ZCS CHANGED FROM FIGURE B-1 ● ● ● ● D4 FRAMING PER-CHANNEL SIGNALING ROBBED-BIT SIGNALING ZCS DS1 OR DMI INTERFACE TRANSMISSION FACILITY DS1 OR DMI INTERFACE (2-WAY COMMUN...

B-4 SAMPLE INSTALLATION AND MAINTENANCE PROBLEMS LOCATION A DS1 INTERFACE LOCATION B DS1 INTERFACE CHANNEL 1 CHANNEL 2 5/0 6/0 TYPE 36 ....................... TYPE 75 5/0 6/0 CHANNEL 1 CHANNEL 2 TRANSMISSION FACILITY CHANNEL 13 CHANNEL 14 0/0 1/0 TYPE 75 ...................... TYPE 36 0/0 1/0 CHANNE...

SAMPLE INSTALLATION AND MAINTENANCE PROBLEMS B-5 t h e R E C o r N E C t o e n s u r e c o m p a t i b i l i t y b e t w e e n t h e s e d e v i c e s a n d t h e a s s o c i a t e d communications systems. CDMs The CDM is used to drop or insert one or more DS1/DMI channels from the transmission fac...

B-6 SAMPLE INSTALLATION AND MAINTENANCE PROBLEMS SYSTEM 75 OR SYSTEM 85 OPTIONS: OTHER ENDPOINT OPTIONS: ● ● ● ● D4 OR ESF FRAMING PER-CHANNEL SIGNALING ROBBED-BIT SIGNALING ZCS ● ● ● ● D4 OR ESF FRAMING PER-CHANNEL SIGNALING ROBBED-BIT SIGNALING ZCS TRANSMISSION FACILITY DS1 OR DMI INTERFACE A 24 T...

SAMPLE INSTALLATION AND MAINTENANCE PROBLEMS B-7 SYSTEM 75 OR SYSTEM 85INTERFACE A OPTIONS: ● D4 OR ESF FRAMING ● PER-CHANNEL SIGNALING ● ROBBED-BIT SIGNALING ● ZCS OTHER ENDPOINT INTERFACE A OPTIONS: ● D4 OR ESF FRAMING ● PER-CHANNEL SIGNALING ● ROBBED-BIT SIGNALING ● ZCS TRANSMISSION FACILITY DS1 ...

B-8 SAMPLE INSTALLATION AND MAINTENANCE PROBLEMS ---- SYSTEM 75/SYSTEM 85 OPTIONS: ● D4 FRAMING ● PER-CHANNEL SIGNALING ● ROBBED-BIT SIGNALING ● ZCS D4-CHANNEL BANK OPTIONS: ● D4 FRAMING ● PER-CHANNEL SIGNALING ● ROBBED-BIT SIGNALING ● ZCS DS1 OR DMI INTERFACE TRANSMISSION FACILITY D4 CHANNEL BANK F...

SAMPLE INSTALLATION AND MAINTENANCE PROBLEMS B-9 Loss of or No Synchronization Without synchronization, a digital interface runs on its own internal clock. If both ends of aDS1/DMI facility (both DS1s) run on their internal clock, timing differences (slips) occur. Digitaltransmission, either analog ...

B-l0 SAMPLE INSTALLATION AND MAINTENANCE PROBLEMS DS1 OR DMI INTERFACE DS1 OR DMI INTERFACE PRIMARY REFERENCE LOCATION A PRIMARY REFERENCE LOCATION B Figure B-10. Leavenworth Loop on the Primary Reference DS1 OR DMI INTERFACE LOCATION A SECONDARY REFERENCE DS1 OR DMI INTERFACE LOCATION B SECONDARY R...

SAMPLE INSTALLATION AND MAINTENANCE PROBLEMS B-11 common equipment shelf of the D4. External timing may only be optioned from the OIU-2. Looptiming should be selected (digital switch as the master reference) in every instance but one: when al o w e r s t r a t u m c l o c k i s a v a i l a b l e t o...

SAMPLE INSTALLATION AND MAINTENANCE PROBLEMS B-13 for System 85s that are configured with the ANN11C version 8 or later circuit pack. Figure B-15,Synchronization from DACS Node, shows a configuration that obtains synchronization from a DACS. DS1 OR DMI PRIMARY REFERENCE DACS INTERFACE (STRATUM 3) LO...

SAMPLE INSTALLATION AND MAINTENANCE PROBLEMS B-15 TABLE B-2. System 75 Versus System 85 Cable Comparisons CABLE/CONNECTORS (INITIAL OR OLD) (PDS COMPATIBLE) (NOTE 1) SYSTEM 85 (NOTE 2) SYSTEM 85 ( N O T E 2 ) SYSTEM 75 INTRACABINET GR 335-337 GR 367-369 (NOTE 3) N/A 50- TO 15-PIN GR 117 GR 180 OR GR...

SAMPLE INSTALLATION AND MAINTENANCE PROBLEMS B-17 TABLE B-4. 8-Position Modular Jack Pin Assignments (System 75 and System 85 Perspective) DS1 OR DMI PINOUT FOR 8-PIN MODULAR JACK (NOTE 1) PIN NUMBERS FUNCTION 1 3 4 2 6 5 RECEIVE LOOPBACK (NOTE 2) TRANSMIT OTHERS NOT USED NOTES: 1 . The modular jack...

B-18 SAMPLE INSTALLATION AND MAINTENANCE PROBLEMS System 85 DS1/DMI to System 85 DS1/DMI — Colocated Arrangement How this connection is made depends on the vintage or suffix of each DS1. The ANN11B orANN11C line drivers do not comply with FCC emission standards. Therefore, if the ANN11B or ANN11C ar...

SAMPLE INSTALLATION AND MAINTENANCE PROBLEMS B-19 Permitted Cabling Combinations Using PDS Using cable GR-380: NOTE: When using PDS wiring, the easiest approach is to connectthe port cabinets at each end to a cross-connect field (XCF) usingGR-380 cables.With this arrangement, it is not necessary to ...

B-20 SAMPLE INSTALLATION AND MAINTENANCE PROBLEMS System 85 DS1/DMI to System 75 DS1/DMI — Colocated Arrangement Permitted Cabling Combinations Using cable GR-380: A N N 1 1 C / D / EA N N 1 1 C / D / E ↔↔ [335-337][367-369] ↔↔ GR-380GR-380 ↔↔ System 75System 75 Using old cable groups: Connections u...

SAMPLE INSTALLATION AND MAINTENANCE PROBLEMS B-21 System 85 DMI to Host Computer Permitted Cabling Combinations Using cable GR-380: A N N 1 1 D / EA N N 1 1 D / E ↔↔ [335-337][367-369] ↔↔ G R - 3 8 0G R - 3 8 0 ↔↔ D M I - H o s tD M I - H o s t Using old cable groups: Connections using cable group 3...

B-22 SAMPLE INSTALLATION AND MAINTENANCE PROBLEMS System 85 DS1/DMI Direct to a NCTE Permitted Cabling Combinations Using Cable GR-380: A N N 1 1 C / D / EA N N 1 1 C / D / E ↔↔ [335-337][367-369] ↔↔ G R - 3 8 0G R - 3 8 0 ↔↔ N C T EN C T E Using old cable groups: A N N 1 1 C / D / E ↔ [335-337] ↔ 1...

C. ADMINISTRATION PROCEDURE SUMMARY This appendix examines administrative procedures in DEFINITY ® Generic 2 that relate to ISDN- PRI. It describes how pertinent administrative fields relate to ISDN-PRI level-3 message contentsand general feature operation. This appendix is organized in ascending ad...

C-2 ADMINISTRATIVE PROCEDURE SUMMARY Mode 3 Mode 0 Voice GradeData Unknown Digital UnknownAnalog Mode 3/2 Opcode: 4 (assuming no codeset mapping)Information transfer capability: either unrestricted digital information orrestricted digital information depending on the translation specified for thebea...

ADMINISTRATIVE PROCEDURE SUMMARY C-3 X.25 Opcode: 4 (assuming no codeset mapping)Information transfer capability: unrestricted digital informationCoding standard: CCITTInformation transfer rate: coded to a 0 Transfer mode: packet modeLayer and protocol identification: recommendation X.25 link level ...

C-4 ADMINISTRATIVE PROCEDURE SUMMARY 1 2 Use an ISDN-PRI trunk exclusively. When routed to a specific pattern, the first availableISDN trunk found in the highest preference is used. Non-ISDN trunk group preferences areskipped in the routing algorithm. If an ISDN-PRI trunk group is not translated in ...

ADMINISTRATIVE PROCEDURE SUMMARY C-5 Mode 2 Mode 3 Mode 0 Opcode: 4Information transfer capability: restricted digital informationCoding standard: CCITTInformation transfer rate: 64K-bpsTransfer mode: circuit mode Opcode: 4Information transfer capability: restricted digital informationCoding standar...

ADMINISTRATIVE PROCEDURE SUMMARY C-9 PROCEDURE 108 WORD 1 (System 85 R2V4 & Generic 2) This procedure is used to assign the terminating test-line telephone digits to an ISDN-PRI trunkgroup. These are the address digits used to build the called party number IE in the setup messagewhen making a de...

C-10 ADMINISTRATIVE PROCEDURE SUMMARY Field 5 of this word specifies an interface type of network or user. For an ISDN-PRI point-to-pointlink to function, one end must be translated as network and the other end as user. This field also determines how glare is handled on this board. The following rul...

ADMINISTRATIVE PROCEDURE SUMMARY C-11 (timer value) = (N200 + 1) * T200 The default value of these four timers is 4 seconds [(3 + 1) * 1]. T321 is defined as T203 + 10 seconds. As T203 defaults to 30 seconds, T321 is defined as a 40 second timer. Field 13 of this word applies only to Generic 2. If t...

C-12 ADMINISTRATIVE PROCEDURE SUMMARY TABLE C-2. System 85 R2V4 to Generic 2 IE Opcode Translations IE Opcode Value Information Element (IE) Name R2V4 G2 Link layer parameters 1 64 Packet layer parameters 2 62 Logical link identification 4 26 The next two user-to-user IEs kept the same opcode values...

C-14 ADMINISTRATIVE PROCEDURE SUMMARY NSF IE (System 85 R2V4) For System 85 R2V4, the following values can be entered into field 5: 33 through 288(OUTWATS BandNSFs) 352 (SDN NSF) 354 (MEGACOMNSF) These values specify the plan, pattern, or preference is requesting service forOUTWATS bands 0-255 respe...

ADMINISTRATIVE PROCEDURE SUMMARY C-15 356 (WATS NSF) 357 (ACCUNET viaencode 357) Opcode: 2 The following three items are sent only if field 12 of procedure 309, word 1,is nonzero. Network identification plan: carrier identification codeType of network identification: national network identificationN...

C-16 ADMINISTRATIVE PROCEDURE SUMMARY Rules for requesting ACCUNET services from different generics of 4ESS are the same as those forSystem 85 R2V4. That is, when dealing with 4E13 or later, set up a definition of a binary servicewith a value of 6. This definition is used in field 6 of procedure 309...

ADMINISTRATIVE PROCEDURE SUMMARY C-17 Field 6 (Generic2 ) Field 16 of procedure 014, word 1, defines the BC for the calling party’s COS.Fields 4 through 13 of procedure 014, word 1, define the bearer capability COSof the preference. Field 6 of procedure 309, word 5, defines how to handlecalling part...

C-18 ADMINISTRATIVE PROCEDURE SUMMARY In addition, a thousands digit can be assigned in field 4. This digit must be assigned in 3-digitswitches for the calling party number and connected number to make sense. If assigned in a 4 or 5-digit switch, it is used for the thousands digit in the address dig...

D. TRUNK TYPE AND SIGNALING TYPE COMPATIBILITY TABLES This appendix contains three tables that define trunk type to signaling type compatibility for System85 R2V1, R2V2, R2V3, R2V4, and Generic 2. Table D-1, T r u n k / S i g n a l i n g C r o s s - r e f e r e n c e s ,provides, on a trunk type bas...

D-6 TRUNK TYPE AND SIGNALING TYPE COMPATIBILITY TABLES TABLE D-2. R2V4 Alternate Signaling Type Translations Trunk EQU R2V4 G2 Equiv. Type Sig. Type Sig. Type colwi 16 4 28 16 21 29 colwo 17 4 28 17 21 29 c o l w o p 18 4 28 18 21 29 co_2w 19 4 28 19 21 29 co_2wp 20 4 28 20 21 29 fx1wi 21 4 28 21 21...

TRUNK TYPE AND SIGNALING TYPE COMPATIBILITY TABLES D-7 Table D-3, Signaling Type Compatibility, provides the compatibility of standard signaling types. The first column is the frame of reference for the direction compatibility. Compatibility is either one way out, one way in, or bidirectional from t...

D-8 TRUNK TYPE AND SIGNALING TYPE COMPATIBILITY TABLES Table D-4, Signaling Type Definitions, provides definitions for the signaling types used in the other three tables in this appendix. TABLE D-4. Signaling Type Definitions Mnemonic EOU Definition Trad. Circuits Hybrid Circuits no_signal_req 00 no...

ABBREVIATIONS A AAR A/CO A D F T C AFRL AIOD ALU A N I ARS A/TO A/TT AUTOVON A V D AWG B 8 Z S BC BCC BCCOS bps CBC CCITT CCR CCSA CDM CEM COR COS CRC CSU ampere Automatic Alternate Routing Analog CO trunk analog/digital-facility test circuit alternate facilities restriction level automatic identifi...

GLOSSARY 1s density 24th-channelsignaling 800 service access A C C U N E T ® A C C U N E T ® digital service A C C U N E T ® packet service A C C U N E T ® reserved 1.5service A C C U N E T ® T 1 service See ones density. Digital signal level 1 (DS1) signaling in which the signaling for each of the ...

GL-2 GLOSSARY analog analog/digital-facility testcircuit(ADFTC) arithmetic logicunit (ALU) asynchronousdatatransmission AT&T ISDNbasic rateinterface (BRI) AT&T ISDNprimary rateinterface(ISDN-PRI) AT&Tstandardizedfacility element AutomaticAlternateRouting (AAR) automaticidentifiedoutward ...

GLOSSARY GL-3 AWG bandwidth baud bit rate bits per second (bps) B8ZS B-channel B-channel cut-through BCCOS BCCOS — unknown analog BCCOS — unknown digital bearer capability bearer capability class (BCC) bearer capability classof service (BCCOS) bearer- capability routing See American Wire Gauge. The ...

GLOSSARY GL-5 channel-division multiplexer(CDM) channel-expansion multiplexer (CEM) channel negotiation channel serviceunit (CSU) circuit-switchedtransport mode class ofrestriction (COR) class of service (COS) A device that connects directly to a System 75 or a System 85 digital signal level 1 (DS1)...

GL-6 GLOSSARY clear-channelsignaling clear channeltransmission codepoint codeset combination tie trunk common- channel interofficesignaling common- channel signaling Common- ControlSwitching Arrangement(CCSA) CRC cross coupling CSU cyclic redundancycheck (CRC) See 24th-channel signaling and common-c...

GLOSSARY GL-7 D4 framing format D-channel DACS data module data set data serviceunit (DSU) data terminal equipment (DTE) dB DCP decibel (dB) dialed-numberidentificationservice (DNIS) dial pulse dial-pulseaddressing DID digital-accessand cross- connect system (DACS) A format containing 12 frames. See...

GL-8 GLOSSARY DigitalCommunicationProtocol (DCP) digital digital data digitalmultiplexed interface (DMI) digitalmultiplexed interface with bit-oriented signaling (DMI-BOS) digitalmultiplexedinterface withmessage-oriented signaling(DMI-MOS) digital signal level 1 (DS1) Direct InwardDialing (DID) DNIS...

GLOSSARY GL-11 high-volumetandem hyperactivity INADS inband signaling information element (IE) informationtransfercapability information transfer rate Initialization andAdministration System(INADS) IntegratedServices Digital Network (ISDN) Integrated Services DigitalNetwork basicrate interface(ISDN-...

GL-12 GLOSSARY Integrated Services Digital Networkprimary rateinterface(ISDN-PRI) interexchangecarrier (IXC) interface internal clockreference interworking ISDN ISDN dynamictrunk ISDN network identifier ISDN network-service value The interface between multiple communications systems that in North Am...

GLOSSARY GL-15 networksynchronizationplan nonfacilityassociatedsignaling(NFAS) off-premisesextension (OPX) off-premises station (OPS) ones density OPS OPX out-of-band signaling packet packetassembler/disassembler(PAD) An engineering diagram that identifies each customer-premises switching nodeand sp...

GL-16 GLOSSARY packet-switchedtransport mode packetswitching packetized data PAD parameterized- service format partitioning PAM PC/PBX Connection PCM PDM PDS preferred callreference premises distributionsystem (PDS) PRI The condition in which a communications system or network provides packet switch...

GLOSSARY GL-17 primary rateinterface (PRI) private network processor data module (PDM) protocoldiscriminator public network pull-in range pulse-amplitude modulation (PAM) pulse-code modulation(PCM) Q.920 and Q.921 Q.930 and Q.931 Qrecommendations raw data remote framealarm (RFA) A standard Integrate...

GL-18 GLOSSARY Remote Group remote module restrictedchannel restricted digital data RFA RG robbed-bit signaling SDN secondary synchronizationreference senderizedoperation severely errored second signaling systemnumber 7 slip A feature that allows a group of port circuits — equivalent to one or more ...

GLOSSARY GL-19 SoftwareDefined Network (SDN) special access SS7 station identification(SID) number stimulussignaling switched access synchronization synchronousdatatransmission synchronoustransmission T1 T1 digitalcarrier tandem tie-trunk network(TTTN) TCM tenant service An AT&T private networki...

GL-20 GLOSSARY terminalbalance Terminating-ExtensionGroup (TEG) time- multiplexedswitch (TMS) time-slotinterchanger (TSI) TMS toll office transport mode traveling class mark (TCM) trunk group trunk type TMS TSI TTTN UDP Uniform Dial Plan (UDP) The measured echo-return and singing-return losses for a...

GLOSSARY GL-21 unrestricted channel unrestricted digital data user-to-userinformation (UUI) exchange user-to-userinformation transfer U U I via-net loss (VNL) visualmaintenance and administrationpanel (VMAAP) V N L voice-grade data WATS (WideArea X.25 ZCS A B-channel that uses bipolar with 8-zero su...

GL-22 GLOSSARY zero code A binary-coding scheme that ensures that a data stream contains at least a suppression minimum number of information bits to ensure receiver synchronization. While (ZCS) acceptable for voice transmission, ZCS may not be acceptable for data transmission. See also ones density...

INDEX 1 1s density 1-17, 1-20 2 24th-channel signaling 1-14, 1-15, 2-3 4 4-wire E&M extended range channel units 2-5 5 50-pin (25-pair) connector configurations B-14 551V channel service unit 6-1551V ST channel service unit 6-15ESS to another system 2-7 A AAR assignments 7-46 access ACCUNET 6-3,...

IN-6 INDEX DS1— Contd DMI— Contd BOS Generic 1 6-4 line-only mode 5-29 line+trunk mode 5-30 ISDN-PRI port losses 4-6 private-network connections 2-3 public-network connections 2-6 terminal-equipment connections 2-9 DSX-1 cross connect 3-1 echo 3-6 encoding technique 1-8 endpoints 2-3FAS 1-9 for hybr...

IN-16 I N D E X voice-grade data— C o n t d definition 1-8Generic 1 AVD trunk limitations 7 - 1 1 8System 75 AVD trunk limitations 7-109System 85 AVD trunk limitations 7-9 W Wide Area Telecommunications Service (WATS) 2-8, 7-13, D-1 wiring, premises distribution system (PDS) 2-5 X X.25 1-10 Y yellow...