Page 4 - eorient or relocate the receiving antenna.
FEDERAL COMMUNICATIONS COMMISSION RADIO FREQUENCY INTERFERENCE STATEMENT FCC ID: HDC1202029TL This equipment has been tested and found to comply with the limits for a Class B dig- ital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against ha...
Page 5 - guarantee the equipment will operate to the user’s satisfaction.; Load Number; (LN) assigned to each terminal device denotes the percentage of the
CANADIAN EMISSIONS REQUIREMENTS This digital apparatus does not exceed the Class B limits for radio noise emissions from digital apparatus as set out in the interference-causing equipment standard entitled "Digital Apparatus," ICES-003 of the Department of Communications. Cet appareil nueriq...
Page 6 - Table of Contents
61202.029L2-1 ISU 128 User Manual i Table of Contents Chapter 1. Understanding ISDN and the ISU 128 ..................................................... 1 ISDN Overview .................................................................................................................. 1 The ADTRAN IS...
Page 9 - Configuring and Testing with the Front Panel or
Table of Contents iv ISU-128 User Manual 61202.029L2-1 Dial PPP* ............................................................................................................... 62 V34 115.2 async* ................................................................................................... 63 ...
Page 12 - List of Figures
61202.029L2-1 ISU 128 User Manual vii List of Figures Figure 1-1: ISU 128 Rear Panel ................................................................................ 2 Figure 1-2: ISU 128 Front Panel ............................................................................... 3 Figure 1-3: ISU 12...
Page 14 - List of Tables
61202.029L2-1 ISU 128 User Manual xi List of Tables Table 1-A: DTE Indicators ....................................................................................... 3 Table 1-B: Recommended Operating Modes ....................................................... 7 Table 3-A: Maximum DTE Interface Ca...
Page 16 - ISDN OVERVIEW; is required. To obtain
61202.029L2-1 ISU 128 User Manual 1 Chapter 1 Understanding ISDN and the ISU 128 ISDN OVERVIEW The Integrated Services Digital Network (ISDN) is a public or private switched digital network. ISDN is an international standard for digital communica-tions, allowing a full range of enhanced services sup...
Page 17 - ISDN dial modem; ISDN IFC
Chapter 1. Understanding ISDN and the ISU 128 2 ISU 128 User Manual 61202.029L2-1 over ISDN. The ISU 128 may be viewed as an ISDN dial modem that allows cost-effective high-speed data transmission at rates up to 128 kbps. The ISU 128 has one RJ-45 jack available on the rear panel for network connec-...
Page 18 - DTE Indicators; Indicator
Chapter 1. Understanding ISDN and the ISU 128 61202.029L2-1 ISU 128 User Manual 3 • With DTR asserted, some bridges/routers raise DTR when bandwidth on their dedicated line is exceeded. In high-traffic times, this allows the ISU 128 to dial out over the ISDN for an extra 128 kbps of bandwidth-on-de-...
Page 19 - ISU 128 INTEROPERABILITY
Chapter 1. Understanding ISDN and the ISU 128 4 ISU 128 User Manual 61202.029L2-1 ISU 128 INTEROPERABILITY Telephone networks are evolving from analog technologies to digital technol-ogies such as ISDN. This transition is time-consuming and costly for the tele-phone companies. Upgrading all location...
Page 20 - ISU 128 Interoperability
Chapter 1. Understanding ISDN and the ISU 128 61202.029L2-1 ISU 128 User Manual 5 ENTER 123 456 789 #0 * RS CS TD RD LD TR SR ISU CANCEL ENTER 123 456 789 #0 * RS CS TD RD LD TR SR DSU CANCEL ENTER 123 456 789 #0 * RS CS TD RD LD TR SR DSU CANCEL DTE DTE DTE DTE ISU 128 2-Wire SW56 DSU 4-Wire SW56 D...
Page 21 - RECOMMENDED OPERATING PROTOCOLS
Chapter 1. Understanding ISDN and the ISU 128 6 ISU 128 User Manual 61202.029L2-1 RECOMMENDED OPERATING PROTOCOLS The ISU 128 supports a wide range of operating modes. Many combinations of circuit type, protocol, and data rate may be selected. However, only the combinations shown in Table 1-B are re...
Page 22 - Recommended Operating Modes
Chapter 1. Understanding ISDN and the ISU 128 61202.029L2-1 ISU 128 User Manual 7 Table 1-B Recommended Operating Modes 1. All asynchronous rates support flow control. 2. All dial-up modes support front panel, DTR, RS-366, AT command, and V.25 bis dialing methods. 3. Rates marked with f require flow...
Page 24 - Chapter 2; ORDERING ISDN USING IOCS; Capability R; Ordering
61202.029L2-1 ISU 128 User Manual 9 Chapter 2 ISDN Ordering Codes (IOCs) ORDERING ISDN USING IOCS The development of ISDN ordering codes (IOCs) simplifies the process of or-dering ISDN service. The ISDN Solutions Group, a consortium of ISDN equip-ment vendors, service providers, and Bellcore, establ...
Page 25 - Capability S; Applications; Capability B
Chapter 2. ISDN Ordering Codes (IOCs) 10 ISU 128 User Manual 61202.029L2-1 ADTRAN has registered the following ISDN ordering codes to support a va-riety of tariffs and applications: Capability S • 2B service • Both B channels alternating voice and data • Two directory numbers Applications • Host dat...
Page 26 - NETWORK CONNECTION; on the rear panel allows connection to ISDN Basic
61202.029L2-1 ISU 128 User Manual 11 Chapter 3 Installation After unpacking the unit, immediately inspect it for possible shipping dam-age. If damage is discovered, file a claim immediately with the shipping car-rier, then contact ADTRAN Repair and Return Department (see the end of this manual). Ens...
Page 27 - DTE DATA CONNECTION; Maximum DTE Interface Cable Lengths; DIAL INTERFACE CONNECTION; . Pin assignments for the; DTE Interface
Chapter 3. Installation 12 ISU 128 User Manual 61202.029L2-1 DTE DATA CONNECTION Data terminal equipment is connected to the ISU 128 by using either the RS-530 interface, the V.35 interface, or EIA-232 interface on the rear panel of the ISU 128. The maximum recommended cable lengths are shown in Tab...
Page 28 - MAINTENANCE INTERFACE; Front; or; AT commands; . When the dial mode is set for
Chapter 3. Installation 61202.029L2-1 ISU 128 User Manual 13 MAINTENANCE INTERFACE The Maintenance Interface is available at 9600 bps, 8 data bits, no parity, asyn-chronous format, through the RS-366/Maintenance port. See the appendix Connector Pinouts for Maintenance port pin assignments. The VT 10...
Page 30 - MENU NAVIGATION
61202.029L2-1 ISU 128 User Manual 15 Chapter 4 Operation MENU NAVIGATION Four function keys on the left-hand side of the keypad allow the user to enter, exit, and scroll through the various menu branches. The four function keys are defined below. Enter Enters the selected item. Up Arrow Scrolls up a...
Page 31 - GETTING STARTED; Current Status Messages. Pressing; Status Buffer
Chapter 4. Operation 16 ISU 128 User Manual 61202.029L2-1 GETTING STARTED At power up, the front panel display is in the Current Status mode. This is the recommended resting place for the display as it shows the current operational status of the unit. For example, if the ISU 128 is not connected to ...
Page 32 - VT 100 TERMINAL MENU SUPPORT; . To go to a particular menu, simply press the hot; Status Screen; To determine the current status of the unit, press
Chapter 4. Operation 61202.029L2-1 ISU 128 User Manual 17 VT 100 TERMINAL MENU SUPPORT When connected to an asynchronous VT 100 terminal or VT 100 terminal em-ulator, use the built-in ISU 128 menu system for configuration. To enter into the menus, type AT!V Enter . To go to a particular menu, simply...
Page 33 - Configuration Screen; VT 100 Configuration Screen
Chapter 4. Operation 18 ISU 128 User Manual 61202.029L2-1 Configuration Screen Once the unit is selected using the terminal interface, the display shows the Configuration Menu (see Figure 4-2). This screen shows the current configura-tion, line, and call status for the selected unit. See the chapter...
Page 34 - TEST OPTIONS; Pressing
61202.029L2-1 ISU 128 User Manual 19 Chapter 5 Testing TEST OPTIONS Pressing Ctl-T from any VT 100 terminal screen or selecting 2=TEST from the top of the menu tree on the front panel displays local testing options. Figure 5-1 shows the VT 100 terminal test screen and the menu tree is illustrated in...
Page 35 - Test Menu Tree; Loopback DTE; causes the ISU DTE port to loop back toward user equipment.; Loopback Network; forces the ISU 128 to loopback both the B1 and B2 chan-; Loopback Protocol; Loopback Protocol
Chapter 5. Testing 20 ISU 128 User Manual 61202.029L2-1 Figure 5-2 Test Menu Tree Loopback DTE Loopback DTE causes the ISU DTE port to loop back toward user equipment. This allows performance of a bit error rate test (BERT) between the ISU 128 and the end user equipment to verify proper cable connec...
Page 36 - Loopback Remote; Test Remote; Loopback Disable; No Remote Loopbacks
Chapter 5. Testing 61202.029L2-1 ISU 128 User Manual 21 Loopback Remote Loopback Remote allows the ISU 128 to issue a V.54 in-band loopback com- mand to a far-end unit while still accepting data from the DTE connector. This provides bit error rate testing of an entire link using an external BERT tes...
Page 37 - loopback commands to take effect.; Software Version; Software Ver; displays the software version and checksum in use on the ISU
Chapter 5. Testing 22 ISU 128 User Manual 61202.029L2-1 DDS+V54 Accept The ISU 128 responds to both DSU Latching Loopback commands (leased line mode only) and V.54 loopback commands. The ISU must be optioned for Clear Channel operation for DSU Latching and V.54 loopback commands to take effect. Near...
Page 38 - DIAL LINE OPERATION; CONFIG; Dial Line Menu Tree; Line type
61202.029L2-1 ISU 128 User Manual 23 Chapter 6 Configuration DIAL LINE OPERATION This section explains how to configure the ISU 128 when using ISDN basic rate switched service. Figure 6-3 illustrates the entire CONFIG branch of the menu tree. The following are step-by-step procedures for configuring...
Page 39 - Switch Protocol; tioned for either speech or audio call type.; cuit as the bearer capability for outgoing calls. The; Speech; option is used with
Chapter 6. Configuration 24 ISU 128 User Manual 61202.029L2-1 Figure 6-2 VT 100 Configuration Screen Switch Protocol Find out what kind of ISDN switch your local CO is using by asking the tele-phone administrator or telephone company representative. Configure the ISU 128 for either a Northern Teleco...
Page 40 - Terminal Identification; Setting the SPID
Chapter 6. Configuration 61202.029L2-1 ISU 128 User Manual 25 less than data service. A Speech call type does not guarantee an end-to-end digital connection with some local and long distance carriers. Audio Audio directs the call control software to request a 3.1 kHz audio circuit as the bearer capa...
Page 41 - Setting the LDN
Chapter 6. Configuration 26 ISU 128 User Manual 61202.029L2-1 When selecting a SPID, use the Up and Down arrows to choose between SPID 1 and SPID 2. Press Enter to select the SPID and use the keypad to enter the SPID number. While entering/editing a SPID, the Down arrow allows ou to backspace throug...
Page 42 - Configur
Chapter 6: Configuration 1 ISU 128 User Manual 27 Configur 2=DTE options 1=Netw. options 1=Asynchronous 2=Synchronous G 3=Protocol 1=Clear Channel2=BONDING mode 13=V.1204=V.345=V.110 6=DSU 57.6 ASYNC7=T-LINK8=SAP .9=FALLBACK 1=Fallback Def0=PPP asyn-sync 4=Quick setup S ‘Buffer Display’ 1=Loopback D...
Page 44 - Dial options; for; Front Panel; . See the section Front Panel Dialing Options for more; Enter
Chapter 6. Configuration 61202.029L2-1 ISU 128 User Manual 29 Dial options The ISU 128 can be configured to dial using the Front Panel, RS-366 port, AT Commands, or V.25 bis Commands. Figure 6-4 illustrates the menu tree. Front Panel To establish and disconnect calls from the front panel keypad, con...
Page 45 - sec or EON; AT Commands
Chapter 6. Configuration 30 ISU 128 User Manual 61202.029L2-1 1 sec or EON The ISU 128 assumes the dial string is fully entered if more than one second elapses since the last digit was entered, or the unit receives the EON com-mand. 2 sec or EON The ISU 128 assumes the dial string is fully entered i...
Page 46 - OK
Chapter 6. Configuration 61202.029L2-1 ISU 128 User Manual 31 To exit the data mode and enter the command mode, the asynchronous DTE device must transmit a proper escape sequence to the ISU 128. A specified time delay must occur between the last data character and the first escape se-quence characte...
Page 47 - Reading S-Register Strings
Chapter 6. Configuration 32 ISU 128 User Manual 61202.029L2-1 Reading S-Registers Type ATS followed by the number of the S-register to be read followed by a question mark and press Enter. ATS0? Reading S-Register Strings The ISU 128 uses S-register strings to store strings of digits for stored phone...
Page 48 - Configuring the ISU 128 for
Chapter 6. Configuration 61202.029L2-1 ISU 128 User Manual 33 V.25 bis Configuring the ISU 128 for V.25 bis (see Figure 6-5) enables in-band dialing over a DTE interface using asynchronous or synchronous V.25 bis commands. V.25 bis can be used to establish and end a call. Disconnecting calls can als...
Page 49 - front panel dialing. See Front Panel Dialing Options.; Disabled; will override V.25 control of the answer func-; Data bits; Data Bits Menu Tree
Chapter 6. Configuration 34 ISU 128 User Manual 61202.029L2-1 When using stored numbers, V.25 bis accesses stored numbers 1 through 9 used by front panel dialing. See Front Panel Dialing Options. Auto Answer should be set to Disabled (shown in Figure 6-6) if V.25 bis is in control of answering incom...
Page 50 - V.25 bis ASYNC Menu Tree; V.25 SYNC HDLC Dialing; This selection disables in-band dialing over the DTE interface.
Chapter 6. Configuration 61202.029L2-1 ISU 128 User Manual 35 The setting in Figure 6-8 allows for V.25 bis messages in asynchronous (start/stop) data format. Figure 6-8 V.25 bis ASYNC Menu Tree Although V.25 bis allows asynchronous data format, asynchronous DTE is more likely to support the AT comm...
Page 51 - Auto Answer
Chapter 6. Configuration 36 ISU 128 User Manual 61202.029L2-1 Auto Answer The ISU 128 auto answer parameter can be configured in one of three ways: Disabled, Enabled, or Dump all calls. Disabled When Disabled is selected, the ISU 128 will not automatically answer an in- coming call. The AT answer co...
Page 52 - Answer Tone; Answer Tone Menu Tree; Answer tone
Chapter 6. Configuration 61202.029L2-1 ISU 128 User Manual 37 Answer Tone The Answer tone option (shown in Figure 6-9) enables the transmission of a modem answer tone at the start of voice and audio calls. The purpose of this tone is to disable echo suppression and echo cancelling on the circuit in ...
Page 53 - Connect Timeout; Connect Timout; sets the length of time that the ISU 128 waits for a far-end unit; Call Screening; allows the ISU 128 to answer all incoming calls (default) or; DIAL; menu as stored
Chapter 6. Configuration 38 ISU 128 User Manual 61202.029L2-1 Connect Timeout Connect Timout sets the length of time that the ISU 128 waits for a far-end unit to answer an outgoing call. These choices are illustrated in Figure 6-10. Figure 6-10 Connect Timeout Menu Tree Call Screening Call Screening...
Page 54 - Select
Chapter 6. Configuration 61202.029L2-1 ISU 128 User Manual 39 The ISU 128 displays the Call ID for all dumped calls in the Status buffer. See the section Status Buffer for more information on the Status buffer. Because different switches handle calls and Call ID differently, use the following proced...
Page 55 - LEASED LINE SERVICE; Leased Line Menu Tree
Chapter 6. Configuration 40 ISU 128 User Manual 61202.029L2-1 LEASED LINE SERVICE This section explains how to configure the ISU 128 when using a 2B1Q leased digital service or a service that provides a permanent connection between end points. Figure 6-12 illustrates the menu tree for setting leased...
Page 56 - Slave; Leased Application with Channel Banks; Channel Rate; In; Leased Line; operation, the data rate for the ISU 128 can be configured for
Chapter 6. Configuration 61202.029L2-1 ISU 128 User Manual 41 If two ISU 128 units are connected through channel banks, both units should be configured for Slave mode (see Figure 6-14). To easily configure ISU 128s for this application, one unit can be optioned using Quick Setup, Ldm 128 Master and ...
Page 57 - DTE OPTIONS; Asynchronous DTE Options Menu Tree; The; The; Bit Rate
Chapter 6. Configuration 42 ISU 128 User Manual 61202.029L2-1 DTE OPTIONS The following procedure configures the DTE options for asynchronous and synchronous applications. Figure 6-15 and Figure 6-16 illustrate the menu trees for both asynchronous and synchronous operation. Ensure your DTE equipment...
Page 58 - Connector Type
Chapter 6. Configuration 61202.029L2-1 ISU 128 User Manual 43 Connector Type The ISU 128 can provide an EIA-232, RS-530, or V.35 interface to a DTE by se-lecting the desired connector type. RTS Options Selecting 1 MS delay causes the Clear-to-Send (CTS) signal to change states 1 millisecond after th...
Page 59 - DSR Options; Flow Control Menu Tree
Chapter 6. Configuration 44 ISU 128 User Manual 61202.029L2-1 DTR signal is in the active state. The unit attempts to establish a call using SN0 until the call is established or DTR goes inactive. Selecting Answer if On only allows the unit to answer an incoming call if the DTR signal is asserted. D...
Page 60 - Data Format Menu Tree
Chapter 6. Configuration 61202.029L2-1 ISU 128 User Manual 45 Data Format (Asynchronous) A frame consists of a start bit, 7 or 8 data bits, 0 or 1 parity bit, and 1 to 2 stop bits. The settings for Data Bits , Parity Bits , and Stop Bits are available as shown in Figure 6-18. Figure 6-18 Data Format...
Page 62 - PROTOCOL OPTIONS; Clear Channel (no rate adaption protocol)
61202.029L2-1 ISU 128 User Manual 47 Chapter 7 Protocol Options PROTOCOL OPTIONS The ISU 128 communicates with many different types of telecommunication equipment including other ISU 128s, ISDN terminal adapters, Switched 56 DSUs, BONDING-compatible inverse multiplexers, and V.34 (1202029L3 only) co...
Page 63 - Protocol Menu Tree; Clear Channel
Chapter 7. Protocol Options 48 ISU 128 User Manual 61202.029L2-1 Figure 7-1 Protocol Menu Tree See the section Recommended Operating Protocols and Table 1-B in Chapter 1 for more information on recommended modes of operation. The desired protocol may be selected with AT commands at the DTE port or f...
Page 64 - near- and far-end DCE need to be configured to use the; BONDING mode 1; protocol negotiation phase has numerous timers; BONDING mode; BONDING Mode 1 Protocol Menu Tree; TXINIT
Chapter 7. Protocol Options 61202.029L2-1 ISU 128 User Manual 49 near- and far-end DCE need to be configured to use the BONDING mode 1 protocol. Also, if the second B channel number is different from the first B channel, it is important that the 7-digit LDN is programmed in the answering unit. The B...
Page 65 - TXDEQ
Chapter 7. Protocol Options 50 ISU 128 User Manual 61202.029L2-1 TXADD01 This option specifies the length of time both endpoints wait for the additional call to be connected at the end of negotiation before deciding the BONDING call has failed. The factory default setting of 20 seconds will be suffi...
Page 66 - Audio; operation of this protocol.; Error Control; V.34 Error Control Menu Tree
Chapter 7. Protocol Options 61202.029L2-1 ISU 128 User Manual 51 V.110 The V.110 protocol is a CCITT compliant rate adaption method which pro- vides DTE service between the ISU 128 and other V.110 compliant devices. V.110 supports synchronous and asynchronous DTE rates. See the section Recommended O...
Page 67 - Compression; turns off the MNP5 compression algorithms in the ISU 128.; Compress MNP5; enables MNP5 data compression.; MicrocomTM Network Protocol Block Size (MNP® Blk); V.34 MNP Block Size Menu Tree
Chapter 7. Protocol Options 52 ISU 128 User Manual 61202.029L2-1 Compression No Compression turns off the MNP5 compression algorithms in the ISU 128. Compress MNP5 enables MNP5 data compression. Compress V42 enables V.42 bis data compression. Compress V42/MNP5 allows the 128 to negotiate MNP5 or V.4...
Page 68 - SAP
Chapter 7. Protocol Options 61202.029L2-1 ISU 128 User Manual 53 DSU 57.6 ASYNC The DSU 57.6 ASYNC or DSTOP protocol allows the ISU 128 to communicate asynchronously at 57.6 kbps with ADTRAN 2- and 4-wire Switched 56 DSU products. In addition, the ISU 128 will communicate with other ISUs over dial a...
Page 69 - FALLBACK; asynchronous rate adaption protocol provides the capability; FALLBACK; Flow control must be enabled and supported by the DTE.; FALLBACK; supports the following protocols based on the call type: BOND-
Chapter 7. Protocol Options 54 ISU 128 User Manual 61202.029L2-1 FALLBACK The FALLBACK asynchronous rate adaption protocol provides the capability to automatically establish calls with other ISDN terminal adapters, Switched 56 DSUs, V.34 modems (optional), as well as other ISUs using a single config...
Page 70 - selected from; Quick Setup; FALLBACK Menu Tree
Chapter 7. Protocol Options 61202.029L2-1 ISU 128 User Manual 55 When originating calls to unknown units, the ISU begins protocol selection based on the local call type. Data 64k is used for FALLBACK selected from Quick Setup menu. Upon connection at 64k call type, BONDING, V.120, and PPP are attemp...
Page 71 - running PPP software, to communicate with
Chapter 7. Protocol Options 56 ISU 128 User Manual 61202.029L2-1 Point-to-Point (PPP) Async-to-Sync PPP provides a standard method for transporting multi-protocol datagrams over point-to-point links. The ADTRAN PPP async-sync protocol allows the ISU 128 and a PC or Macintosh ® running PPP software, ...
Page 72 - or by setting S-register S27; PPP with Compression; ister S27 to a value of 2.
Chapter 7. Protocol Options 61202.029L2-1 ISU 128 User Manual 57 The ISU 128 is configured for multilink PPP from the protocol options of the configuration menu by selecting 2=Multilink PPP or by setting S-register S27 to a value of 1. In this mode, the ISU 128 dials a second number to establish a s...
Page 74 - QUICK SETUP CONFIGURATION; To configure the; DTE Options; quickly and easily, the; menu is
61202.029L2-1 ISU 128 User Manual 59 Chapter 8 Quick Setup QUICK SETUP CONFIGURATION To configure the DTE Options quickly and easily, the Quick Setup menu is available to automatically set up the most common DTE configurations (Fig-ure 8-1). For fine-tuning a particular application and DTE settings,...
Page 75 - 28 kbps Leased service
Chapter 8. Quick Setup 60 ISU 128 User Manual 61202.029L2-1 Quick Setup To assist in configuring the DTE options for the ISU 128, ten common config-urations are preset in Quick Setup . These include: • Synchronous dial operation for 56, 64, 112, and 128 kbps • Asynchronous dial operation for 57.6, a...
Page 76 - When the ISU 128 is configured for
Chapter 8. Quick Setup 61202.029L2-1 ISU 128 User Manual 61 Dial 64K sync* When the ISU 128 is configured for Dial 64K sync service the following pa- rameters are automatically preset: Service type ....................................................................... ISDN dial lineAutomatic answer...
Page 77 - Dial PPP
Chapter 8. Quick Setup 62 ISU 128 User Manual 61202.029L2-1 Dial 128K sync* When the ISU 128 is configured for Dial 128K sync service, the following pa- rameters are automatically preset: Service type ....................................................................... ISDN dial lineAutomatic ans...
Page 80 - More; takes the user into the following level of choices:
Chapter 8. Quick Setup 61202.029L2-1 ISU 128 User Manual 65 More More takes the user into the following level of choices: Leased 128K When the ISU 128 is configured for Leased 128K service the following param- eters are automatically preset: Service type ................................................
Page 81 - Factory Setup; This option restores the ISU 128 to the factory default setup
Chapter 8. Quick Setup 66 ISU 128 User Manual 61202.029L2-1 Factory Setup This option restores the ISU 128 to the factory default setup : Service type ................................................................ISDN dial lineISDN switch protocol ...............................................AT&...
Page 82 - DIALING OPTIONS; Selecting
61202.029L2-1 ISU 128 User Manual 67 Chapter 9 Dial Options DIALING OPTIONS Selecting 4=DIAL or pressing the # (pound) key from the Current Status menu displays the front panel available dialing options. (See Figure 9-2.) Access the VT 100 terminal dial options screen (Figure 9-1) by pressing Ctl-D ...
Page 83 - Dial Menu Tree; Hang Up Line
Chapter 9. Dial Options 68 ISU 128 User Manual 61202.029L2-1 Figure 9-2 Dial Menu Tree Hang Up Line Terminates current call. Dial Number Enter and dial a number from the keypad. If an error is made while entering a number, press the Down arrow to correct the mistake. Press Cancel twice con- secutive...
Page 86 - Remote Configuration
61202.029L2-1 ISU 128 User Manual 71 Chapter 10 Remote Configuration Remote Configuration Remote Configuration allows configuration and testing of a remote unit by calling the remote unit from a local unit. The remote unit can be configured using AT commands, the Front Panel, or the VT 100 terminal ...
Page 87 - Remote Configuration Menu Path
Chapter 10. Remote Configuration 72 ISU 128 User Manual 61202.029L2-1 Configuring and Testing with the Front Panel or VT 100 Terminal The menu path to follow to select remote configuration on the Front Panel is shown in Figure 10-1. Figure 10-1 Remote Configuration Menu Path When using the VT 100 te...
Page 88 - Configure Remote Unit; Remote Unit Configuration Screen
Chapter 10. Remote Configuration 61202.029L2-1 ISU 128 User Manual 73 Configure Remote Unit This option allows configuration of a remote ISU 128. The Front Panel will dis-play a prompt for the remote number to dial. Enter a number and press Enter to continue. A prompt for the remote password is disp...
Page 89 - Remote Testing; Test Menu Path; Loopback Remote 1B
Chapter 10. Remote Configuration 74 ISU 128 User Manual 61202.029L2-1 The Front Panel can only be used to configure other ISU devices with front panels. AT commands and the VT 100 terminal can be used to configure any ISU device that sup- ports remote configuration, such as the Express XR/XRT and th...
Page 90 - Set Password; from the Main Configuration Menu.; . To clear the existing
Chapter 10. Remote Configuration 61202.029L2-1 ISU 128 User Manual 75 connect. The screen from a VT 100 terminal is illustrated in Figure 10- 6. To set the password, choose Set Password from the Main Configuration Menu. Type the six digit (or less) password, then press Enter . To clear the existing ...
Page 92 - Troubleshooting; IF SELF TEST FAILS; Self Test Passed; IF THE ISU 128 DOES NOT READ READY; Ready
61202.029L2-1 ISU 128 User Manual 77 Chapter 11 Troubleshooting When the ISU 128 powers up, it performs an internal self test. This takes about 10 seconds. At the end of the test, the front panel displays Self Test Passed . IF SELF TEST FAILS If Self Test Passed is not displayed, perform the followi...
Page 93 - Link Down
Chapter 11. Troubleshooting 78 ISU 128 User Manual 61202.029L2-1 2. Disconnect the ISU 128 from the ISDN line. From a functioning voice phone, call the local directory number(s) provided with your line. Calling a good ISDN line with nothing connected usually results in a ring or fast busy tone. If s...
Page 97 - E. With the ISU 128 connected to the line and powered up, talk to your
Chapter 11. Troubleshooting 82 ISU 128 User Manual 61202.029L2-1 E. With the ISU 128 connected to the line and powered up, talk to your service provider's repair group and tell them you have an ISDN basic rateline that appears physically okay but has no terminal endpoint identifier(TEI). Ask them to...
Page 98 - Specifications; SPECIFICATIONS AND FEATURES; Network Interface; RJ-45 for ISDN Basic Rate U-Interface, and Leased 2B1Q service; Manual or automatic stored number dialing, DTR assertion
61202.029L2-1 ISU 128 User Manual 83 Chapter 12 Specifications SPECIFICATIONS AND FEATURES This section describes the standard specifications and features incorporated in the ISU 128. Network Interface • RJ-45 for ISDN Basic Rate U-Interface, and Leased 2B1Q service DTE Interface • RS-530 • V.35 • E...
Page 99 - Rate Adaption
Chapter 12. Specifications 84 ISU 128 User Manual 61202.029L2-1 Rate Adaption • T-Link • CCITT V.120 • CCITT V.110 • SAP • DSU 57.6 Async • BONDING mode 1 • V.34 (optional) • PPP • MP Interoperability • BONDING Inverse Multiplexers • Switched 56 DSUs • ISDN TAs • V.34 modems (optional) Switch Compat...
Page 100 - Environmental; Operating Temperature: 0 to 50; Physical
Chapter 12. Specifications 61202.029L2-1 ISU 128 User Manual 85 TR Data Terminal Ready from DTE. On when DTR is active at DTE interface. SR Data Set Ready. Environmental • Operating Temperature: 0 to 50 ° C • Storage Temperature: 20 to 70 ° C • Relative Humidity: Up to 95%, non-condensing Physical •...
Page 102 - Command
61202.029L2-1 ISU 128 User Manual 87 Appendix A AT Commands This appendix lists the supported AT commands and describes their functions. Command Function A Answer. Puts the ISU 128 in answer mode. D Dial. Precedes the telephone access number [ATD5551212]. H Hang up. Disconnects the current call. O O...
Page 106 - V.34 Compression Options
Appendix A. AT Commands 61202.029L2-1 ISU 128 User Manual 91 Command Function The following AT commands require that the optional V.34 modem board be installed: V.34 Compression Options %C0 No compression %C1 Use MNP compression %C2 Use V.42 bis compression %C3 Use V.42 bis/MNP compression V.34 Comp...
Page 108 - Call Connect B1; Bearer channel 1 has been connected and is now active.; Call Connect B2; Bearer channel 2 has been connected and is now active.; CALL xxxxxxx; The ISU 128 is calling phone number xxxxxxx.; DISCONNECTING; The ISU is receiving its first TEI from the network.
61202.029L2-1 ISU 128 User Manual 93 Appendix B Current Status Messages This appendix lists the status line messages and their definitions. Messages shown entirely in capital letters are generated by the ISDN network. Messages with lower case letters are generated by the ISU 128. AT&T-5ESS Ready...
Page 110 - Bandwidth on Demand Industry Users Group protocol.
Appendix B. Current Status Messages 61202.029L2-1 ISU 128 User Manual 95 xxxxx can be any of the following: BONDING Bandwidth on Demand Industry Users Group protocol. CLEAR CHAN No rate adaption protocol (allows use of maximum bandwidth). DSTOP DSU 57.6 async rate adaption protocol. FALLBACK FALLBAC...
Page 112 - ISU 128 went back on line.
61202.029L2-1 ISU 128 User Manual 97 Appendix C Status Buffer Messages This appendix lists the status buffer message and their definitions. Messages shown entirely in capital letters are generated by the ISDN network. Messages with lower case letters are generated by the ISU 128. Answer 1/2 The ISU ...
Page 114 - Call not ringing
Appendix C. Status Buffer Messages 61202.029L2-1 ISU 128 User Manual 99 Call not ringing User executed an answer command (ATA) but there was not a call present. CALL_REJECTED The call has been rejected by the ISDN Network. Can’t go on-line ISU 128 cannot go back on line. User issued an unknown AT co...
Page 115 - A facility requested cannot be provided by the network.
Appendix C. Status Buffer Messages 100 ISU 128 User Manual 61202.029L2-1 DPUMP END RCVD Indication of a hang-up or disconnect occurring during BONDING. Does not indicate an error condition has occurred. DTE must be SYNC For the protocol chosen, the DTE connector must be optioned as synchronous. DTE ...
Page 116 - FlowCtl required; The network will not allow an incoming call.; L1 not up; The network interface is not active.; L2 not up; The data link layer interface is not active.; L3 not up; The call control interface is not active.
Appendix C. Status Buffer Messages 61202.029L2-1 ISU 128 User Manual 101 FlowCtl required Bonding negotiation determined that flow control needs to be optioned on. Hangup 1/2 The call on either the first or second channel was disconnected by the ISU 128. The far-end phone number is also displayed. I...
Page 118 - No Sreg value
Appendix C. Status Buffer Messages 61202.029L2-1 ISU 128 User Manual 103 No Sreg value Attempt to change an S-register without specifying a value (example: ATS2= ). NO_ROUTE The phone network was unable to find a route to the destination number. NO_USER_RESPONDING The dialed number is not responding...
Page 120 - TXFA1 expired
Appendix C. Status Buffer Messages 61202.029L2-1 ISU 128 User Manual 105 TXFA1 expired Bonding timer TXFA1 expired, other vendors BONDING equipment did not operate properly. TXFA2 expired Bonding timer TXFA1 expired, other vendors BONDING equipment did not operate properly. TX FLOW ERROR Flow contro...
Page 122 - Appendix D
61202.029L2-1 ISU 128 User Manual 107 Appendix D S-Register List S0 AUTO ANSWER Determines how the ISU 128 answers an incoming call. 0 = Disable (ISU 128 does not answer call). 1 = Enable (ISU 128 answers all calls). 2 = Dump all calls. S2 BREAK IN Determines which key or character (in ASCII code) C...
Page 134 - Maintenance Port
Appendix E: Connector Pinouts 61202.029L2-1 ISU 128 User Manual 119 Figure E-5 Maintenance Port Table E-F Maintenance Port Pin Name I/O Description 2 TD-A I Transmitted Data 3 RD-A O Received Data PIN 13 PIN 1 PIN 25 PIN 14 FEMALE
Page 136 - Acronyms
61202.029L2-1 ISU 128 User Manual 121 Acronyms AMI Alternate Mark Inversion ANSI American National Standards Institute B (Channel) A 64 kbps digital information channel BONDING Bandwidth On Demand Interoperability Group bps Bits per second BRI Basic Rate Interface CCITT Consultative Committee for In...
Page 138 - Glossary; bearer service
61202.029L2-1 ISU 128 User Manual 123 Glossary B-Channel 64 kbps bearer channel used for voice, circuit, or packet switched data. bearer service As defined by CCITT standards, a type of telecommunication service that provides the capability for the transmission of information between user-to-network...
Page 139 - all local phone lines and analog phones are 2-wire.
Glossary 124 ISU 128 User Manual 61202.029L2-1 DDS Dataphone Digital Service. AT&T private line service for transmitting data over a digital system. The digital transmission system transmits electrical signals directly, instead of translating the signals into tone of varied frequencies as with t...
Page 140 - switched telephone network is retained.
Glossary 61202.029L2-1 ISU 128 User Manual 125 ISDN Integrated Services Digital Network. A network architecture that enables end-to-end digital connections. The network supports diverse services through integrated access arrangements and defines a limited set of standard, multipurpose interfaces for...
Page 141 - physical path and to route calls to the appropriate B or D channel.
Glossary 126 ISU 128 User Manual 61202.029L2-1 NT2 Network Termination 2. A unit that provides switching and concentration of subscriber lines at the S-interface. This unit performs the functions of a customer premises switch or multiplexer to multiplex B-channel(s) and D-channel(s) onto one physica...
Page 142 - American digital carrier hierarchy.
Glossary 61202.029L2-1 ISU 128 User Manual 127 T1C 3.152 Mbps. Capable of handling 48 voice conversations. T1C is further up the North American digital carrier hierarchy. T2 6.312 Mbps. Capable of handling 96 voice conversations. T2 is four times the capacity of T1. T3 44.736 Mbps. Commonly referred...
Page 143 - owned equipment and the public network.
Glossary 128 ISU 128 User Manual 61202.029L2-1 2B+D The Basic Rate Interface (BRI) in ISDN. A single ISDN circuit divided into two 64 kbps digital channels for voice or data and one 16 kbps channel for low speed data (up to 9,600 baud) and signalling. 2B+D is carried on one or two pairs of wires dep...
Page 144 - networks by dedicated circuits.
Glossary 61202.029L2-1 ISU 128 User Manual 129 X.25 A packet data transfer protocol for the B and D Channels. Defines the interface between Data Terminal Equipment (DTE) and Data Circuit Terminating Equipment (DCE) for terminals operating in the packet mode and connected to public data networks by d...
Page 146 - Index
61202.029L2-1 ISU 128 User Manual 131 Index A answer call 68 answer tone 37 always tone 37 incoming tone 37 no answer tone 37 outgoing tone 37 asynchronous data format 45 AT command connect message options 90 remote configuration 71 response message options 89 response message types 90 AT commands 3...
Page 152 - Product Support Information; Presales Inquiries and Applications Support; Applications Engineering; Technical Support
Product Support Information Presales Inquiries and Applications Support Please contact your local distributor, ADTRAN Applications Engineering, or ADTRAN Sales: Post-Sale Support Please contact your local distributor first. If your local distributor cannot help, please contact ADTRAN Technical Suppo...
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