Paradyne 3821PLUS - Manuals

Page 2 - Plus Modem; Trademarks; COPYRIGHT

COMSPHERE 3821Plus Modem A January 1999 3821-A2-GB20-40 COMSPHERE3821 Plus Modem User’s Guide3821-A2-GB20-40 5th Edition (January 1999) Changes and enhancements to the product and to the information herein will be documented and issued as a new release or a limitedrevision of this manual. For the 38...

Page 3 - Important Safety Instructions

Safety Instructions B 3821-A2-GB20-40 January 1999 ! Important Safety Instructions 1. Read and follow all warning notices and instructions marked on the product or included in the manual. 2. Slots and openings in the cabinet are provided for ventilation. To ensure reliable operation of the product a...

Page 4 - Notices

COMSPHERE 3821Plus Modem C January 1999 3821-A2-GB20-40 Notices !

Page 5 - Government Requirements and Equipment Return; United States

Safety Instructions D 3821-A2-GB20-40 January 1999 Government Requirements and Equipment Return Certain governments require that instructions pertaining to modem connection to the public switched telephone network be included inthe installation and operation manual. Specific instructions are listed ...

Page 7 - All European Countries

Safety Instructions F 3821-A2-GB20-40 January 1999 This modem is suitable for connection to BT circuits with signalling at a nominal frequency of 2280 Hz and may be connected tomultipoint or point-to-point circuits. The apparatus does not require signalling or otherwise use the frequency range 0 –20...

Page 8 - This page intentionally left blank.

COMSPHERE 3821Plus Modem G January 1999 3821-A2-GB20-40 This page intentionally left blank.

Page 9 - Table of Contents; Preface

i 3821-A2-GB20-40 January 1999 Table of Contents Preface Objectives and Reader Assumptions v . . . . . . . . . . . . . . . . . . . . . . . . . How to Use This Manual v . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Related Documents vi . . . . . . . . . . . . . . . . . . . . . ....

Page 11 - D. Technical Specifications

Table of Contents iii 3821-A2-GB20-40 January 1999 D. Technical Specifications E. Pin Assignments EIA-232-E Pin Assignments E-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . JM8 to RJ11 Crossover Cable E-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . NIM Cable Pin Assi...

Page 13 - How to Use This Manual

v 3821-A2-GB20-40 January 1999 Preface Objectives and ReaderAssumptions This guide describes how to install the 3821Plus circuit card and operate the 3821Plus modem. It is intended forall users of the 3821Plus modem. Each 3821Plus card comprises three modems. In general this guide refers to the 3821...

Page 14 - Related Documents; Contact your sales or service representative to order

COMSPHERE 3821Plus Modem vi January 1999 3821-A2-GB20-40 Related Documents 3000-A2-GA31 COMSPHERE 3000 SeriesCarrier Installation Manual 3980-A2-GB30 COMSPHERE 3800PlusModems, User’s Guide 6700-A2-GY31 COMSPHERE 6700 SeriesNetwork Management System,User’s Guide 6800-A2-GE26 COMSPHERE 6800 SeriesNetw...

Page 15 - Introduction; Overview; The 3821Plus is a member of the COMSPHERE; Features; The 3821Plus modem has a wide variety of features,

1-1 3821-A2-GB20-40 January 1999 Introduction Overview 1-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Features 1-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

Page 16 - Status Indicators; The status indicators on a 3821Plus circuit card; Plus Faceplate, and Optional SDU

COMSPHERE 3821Plus Modem 1-2 January 1999 3821-A2-GB20-40 • Storage of up to 10 telephone numbers to directorylocations. • Originate Security and three Answer Securitymodes. • Callback Security with telephone directory index ortelephone number. • Two factory-defined configurations and twouser-define...

Page 17 - Plus LEDs

Introduction 1-3 3821-A2-GB20-40 January 1999 Table 1-1 3821 Plus LEDs Label Color Indicates ALRM A red Alarm A ON: Modem A has detected a problem with its operation. ALRM B red Alarm B ON: Modem B has detected a problem with its operation. ALRM C red Alarm C ON: Modem C has detected a problem with ...

Page 18 - SDCP Operation; LCD

COMSPHERE 3821Plus Modem 1-4 January 1999 3821-A2-GB20-40 SDCP Operation The SDCP on the 3000 Series Carrier is the user interface to all functions used to configure and control the3821Plus modem. This interface includes the statusLEDs, and a two-line, 32-character Liquid CrystalDisplay (LCD) and ke...

Page 19 - Plus; Modem Installation; Equipment List; Install the Carrier

2-1 3821-A2-GB20-40 January 1999 3821 Plus Modem Installation Overview 2-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3821Plus Installation 2-1 . . . . . . . . . . . . . . . . . . . . . . . . . ....

Page 20 - Install the NIM; Procedure; Cable the NIM; Appendix E

COMSPHERE 3821Plus Modem 2-2 January 1999 3821-A2-GB20-40 P26 P25 P24 P23 P20 P19 J2 P22 J1 P21 495-14854 TO P23 OR P25 TO P24 OR P26 NETWORK INTERFACE MODULE (NIM) NIM COVER STANDOFF Figure 2-1. Installing the NIM Install the NIM A NIM can be installed on the left or right side of the back of the 3...

Page 21 - Attach the DTE Interface Assembly; The eight-slot DTE interface assembly can be mounted; Feed the eight tabs at the bottom of the DTE; Insert the screws provided, but do not completely

3821Plus Modem Installation 2-3 3821-A2-GB20-40 January 1999 Attach the DTE Interface Assembly The eight-slot DTE interface assembly can be mounted on the left or the right side of the carrier. If you areinstalling only one interface assembly, it must be mountedon the same side you installed the NIM...

Page 22 - Install the Circuit Card; Figure 2-4. Installing the Card Into the Carrier; Connect the DTE

COMSPHERE 3821Plus Modem 2-4 January 1999 3821-A2-GB20-40 Install the Circuit Card Slide the 3821Plus card into its slot in the 3000 Series Carrier. Press firmly until the back edge of the card seatsin the socket of the DTE interface assembly. Figure 2-4 shows circuit cards in a carrier in which the...

Page 23 - AT; Selecting Configurations Using the SDCP; Appendix A

3821Plus Modem Installation 2-5 3821-A2-GB20-40 January 1999 Install CommunicationsSoftware A computer commands and controls a modem through communications software. This software uses the ATcommand set to send instructions to the modem. A dumbasynchronous terminal, however, does not require thissof...

Page 24 - NOTE; Selecting Configurations Using

COMSPHERE 3821Plus Modem 2-6 January 1999 3821-A2-GB20-40 5. Press the key until the appropriate factory preset appears on the LCD, and press thecorresponding function key to select your choice. 6. Choose Function appears and displays the Edit and Save functions. 7. Press the F3 key (Save) to save t...

Page 25 - To change a factory template using AT commands,; and; To establish a connection with a remote modem, use

3821Plus Modem Installation 2-7 3821-A2-GB20-40 January 1999 To change a factory template using AT commands, perform the following steps (for more information onchanging factory templates using AT commands, refer toChapter 4, AT Commands and S-Registers ). " Procedure 1. Use the AT&F&W c...

Page 27 - SDCP Menus

3-1 3821-A2-GB20-40 January 1999 SDCP Menus Menu Structure 3-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Modem Status Messages 3-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....

Page 28 - Menu Structure; An elaborate menu of options is available from a

COMSPHERE 3821Plus Modem 3-2 January 1999 3821-A2-GB20-40 Menu Structure An elaborate menu of options is available from a Shared Diagnostic Control Panel (SDCP). The menu tree is a hierarchical structure used to display functions that configure and control local andremote 3821Plus modems. It is acce...

Page 29 - Modem Status Messages

SDCP Menus 3-3 3821-A2-GB20-40 January 1999 Modem Status Messages Access to all menu tree branches from the SDCP begins at the Top-Level menu, the head of the menuhierarchy. The LCD’s top line identifies the modemstatus, as listed in Table 3-1 , while the bottom line displays the main menu tree bran...

Page 33 - Modem Select Branch; Quick Configuration Display; Configure

SDCP Menus 3-7 3821-A2-GB20-40 January 1999 Modem Select Branch The Modem Select branch is the top level of the menu structure. The modem selections are displayed when theSDCP is first connected to a 3800Plus card (using the Select key on the SDCP). F1 Idle : 33.6 >MDMA mdmb mdmc F2 F3 Press F1, ...

Page 34 - ffff; indicates Bell 212A modulation.; xxxx; To exit the Quick Configuration function and return to

COMSPHERE 3821Plus Modem 3-8 January 1999 3821-A2-GB20-40 ffff Displays the modem’s modulation scheme asshown below: V34 indicates V.34 family modulation. V32t indicates V.32terbo modulation. V32b indicates V.32bis modulation. V32 indicates V.32 modulation. V22b indicates V.22bis modulation. V27b in...

Page 35 - Call Setup Branch; Dial; Change Directory; Disconnect

SDCP Menus 3-9 3821-A2-GB20-40 January 1999 Call Setup Branch The Call Setup branch of the Top-Level menu allows you to dial, disconnect, and answer telephone calls. Italso allows you to create and store up to 10 telephonenumbers to directory locations. Four different functionscan appear under Call ...

Page 36 - Nxt

COMSPHERE 3821Plus Modem 3-10 January 1999 3821-A2-GB20-40 Change Directory Change Directory allows you to enter or modify telephone numbers. The modem has nonvolatile memorylocations that allow you to store up to 10 telephonenumbers. Each directory location can accept up to 40 characters; this incl...

Page 37 - Status Branch; Options; VF

SDCP Menus 3-11 3821-A2-GB20-40 January 1999 Status Branch The Status branch of the Top-Level menu allows you to view the current status of the dial or leased-lineconnection, the DTE interface, and the identity (forexample, serial number and model number) of yourequipment. The selections under Statu...

Page 38 - Identity; FRev; DTE

COMSPHERE 3821Plus Modem 3-12 January 1999 3821-A2-GB20-40 Identity Identity displays the modem’s serial number, model number, firmware revision level, hardware part numberand firmware part number. Retrieval of this informationis useful if you are purchasing additional or replacementmodems and/or ma...

Page 39 - Test Branch; Test; Abort

SDCP Menus 3-13 3821-A2-GB20-40 January 1999 To exit this function and remain in the Status branch, press the key. To exit and return to the Top-Level menu, press the key. Test Branch The Test branch of the Top-Level menu allows you to initiate various modem tests. Use these tests if you arehaving d...

Page 40 - BlksErrd=xxxxxxx displays the number of blocks of

COMSPHERE 3821Plus Modem 3-14 January 1999 3821-A2-GB20-40 If the Test Timeout configuration option is enabled, Test Timeout appears at the conclusion of the test. If itis disabled, the test operates until aborted. For moreinformation on the Test Timeout configuration option,refer to Table 3-10 in t...

Page 41 - Configure Branch

SDCP Menus 3-15 3821-A2-GB20-40 January 1999 To exit this function and remain in the Test branch, press the key. To exit and return to the Top-Level menu, press the key. Configure Branch After installing a 3821Plus modem, you set its software configuration options using either the SDCP orthe AT comm...

Page 42 - Editing and Saving a Configuration Option; The following example shows how to change the

COMSPHERE 3821Plus Modem 3-16 January 1999 3821-A2-GB20-40 Activ (Operating) Active (Saved) Customer1 Customer2 Factory Async_Dial Sync_Dial Sync_Leased UNIX_Dial Choose Mode Answer Originate Ld EditArea frm: Edit Save Choose Function Active (Saved) Customer1 Customer2 DTE_Interface DTE_Dialer Line_...

Page 43 - Edit StrapGroup

SDCP Menus 3-17 3821-A2-GB20-40 January 1999 Scroll to and select the Misc configuration options group. F1 Edit StrapGroup < Test Misc F2 F3 F1 StrapsWhenDisc >Nxt No_Change F2 F3 Select Nxt until RemAccssPasswrd appears. F1 RemAccssPasswrdNxt ąĄ ° 00000000 F2 F3 Select the F2 ( ° ) key to inc...

Page 44 - DTE Interface

COMSPHERE 3821Plus Modem 3-18 January 1999 3821-A2-GB20-40 • The key causes you to exit the Configure branch and return to the Top-Level menu. If anychanges are made to configuration options, theSDCP allows you to save these changes to eitherthe Active (Saved), Customer 1, or Customer 2configuration...

Page 45 - DTE Interface Configuration Options; – Sets data length to 8 data bits.

SDCP Menus 3-19 3821-A2-GB20-40 January 1999 Table 3-4 (1 of 6) DTE Interface Configuration Options Async/Sync Mode: AsyncNxt Async Sync Asynchronous/Synchronous Mode. Determines whether the modem operates in Asynchronous mode or Synchronousmode. If the AT command set is enabled and this configurati...

Page 47 - WinkWhenDisc

SDCP Menus 3-21 3821-A2-GB20-40 January 1999 Table 3-4 (3 of 6) DTE Interface Configuration Options DTR Action: IgnoreNxt Stndrd_RS232 Ignore CntrlsOnHook Off=ReloadStrp Off=CmdMode Data Terminal Ready Action. DTR is a signal from the DTE to the modem indicating that the DTE is connected and readyfo...

Page 48 - Ignore

COMSPHERE 3821Plus Modem 3-22 January 1999 3821-A2-GB20-40 Table 3-4 (4 of 6) DTE Interface Configuration Options RTS Action: IgnoreNxt Ignore Stndrd_RS232 Sim_Cntl_Car Request-to-Send Action. RTS is a signal from the DTE to the modem indicating the DTE has data to send to the modem. Ignore – Modem ...

Page 49 - Forced On – Forces LSD to be ON at all times.

SDCP Menus 3-23 3821-A2-GB20-40 January 1999 Table 3-4 (5 of 6) DTE Interface Configuration Options RTS/CTS Delay: 0 msecNxt 0msec 10msec 50msec 150msec 600msec Request-to-Send/Clear-to-Send Delay. RTS/CTS Delay sets the delay time between the modem receiving RTS from theDTE and the modem sending CT...

Page 50 - Internal; Enable – The DTE rate is identical with the VF rate.

COMSPHERE 3821Plus Modem 3-24 January 1999 3821-A2-GB20-40 Table 3-4 (6 of 6) DTE Interface Configuration Options TX Clock Source: InternalNxt Internal External RXC_Loop This configuration option only appears when Async/Sync Mode is configured for Sync. Transmit Clock Source. Determines the source o...

Page 51 - DTE Dialer; The DTE Dialer configuration options establish the; DTE Dialer Configuration Options

SDCP Menus 3-25 3821-A2-GB20-40 January 1999 DTE Dialer The DTE Dialer configuration options establish the DTE-to-modem protocol for call establishment andcontrol. Table 3-5 shows each DTE Dialer configuration option as it appears on the LCD. Table 3-5 (1 of 5) DTE Dialer Configuration Options DTE D...

Page 52 - Disable; Enable

COMSPHERE 3821Plus Modem 3-26 January 1999 3821-A2-GB20-40 Table 3-5 (2 of 5) DTE Dialer Configuration Options *Escape GuardTim: 1secNxt 1sec 200msec 400msec 600msec 800msec 2sec Escape Guard Time. Determines the length of the required pause before and after the escape sequence is issued. Theguard t...

Page 54 - Words; Normal; ASCII

COMSPHERE 3821Plus Modem 3-28 January 1999 3821-A2-GB20-40 Table 3-5 (4 of 5) DTE Dialer Configuration Options *ResultCode Form: WordsNxt Words Numbers (1) Numbers (2) Result Codes Format. Controls whether or not result codes appear as words or as numeric codes. Some DTEs do notrecognize result code...

Page 55 - Mark; CR LF; Disable – Automatic redialing will not be repeated.

SDCP Menus 3-29 3821-A2-GB20-40 January 1999 Table 3-5 (5 of 5) DTE Dialer Configuration Options V25bis IdleFill: MarkNxt Mark Flag V.25bis Idle Fill. Determines whether a mark or flag is used as an idle fill character for the DTE. The modem responds tothe DTE using the same idle fill. NOTE: This co...

Page 56 - Line Dialer; The Line Dialer configuration options establish; Line Dialer Configuration Options; Tone

COMSPHERE 3821Plus Modem 3-30 January 1999 3821-A2-GB20-40 Line Dialer The Line Dialer configuration options establish parameters used by the modem to answer or originatecalls. Table 3-6 shows each Line Dialer configuration option as it appears on the LCD. Table 3-6 (1 of 4) Line Dialer Configuratio...

Page 60 - Dial Line; The Dial Line configuration options are used to; Dial Line Configuration Options

COMSPHERE 3821Plus Modem 3-34 January 1999 3821-A2-GB20-40 Dial Line The Dial Line configuration options are used to configure the modem for operation over dial lines. Table 3-7 shows each Dial Line configuration option as it appears on the LCD. The Dial Line configuration group does not appear if t...

Page 62 - Long

COMSPHERE 3821Plus Modem 3-36 January 1999 3821-A2-GB20-40 Table 3-7 (3 of 3) Dial Line Configuration Options V22b Guard Tone: DisableNxt Disable 550Hz 1800Hz V.22bis Guard Tone. Determines whether the V.22bis guard tone is disabled, set to 550 Hz, or set to 1800 Hz. Disable – No guard tone. 550 Hz ...

Page 63 - Leased Line; The Leased Line configuration options are used to; Leased Line Configuration Options

SDCP Menus 3-37 3821-A2-GB20-40 January 1999 Leased Line The Leased Line configuration options are used to configure the modem for operation over leased lines. The Leased Line configuration group only appears if the modem is configured with the Sync Leased factorypreset template, or if the &L1, ...

Page 65 - Some choices within this group may not appear; DirectMode

SDCP Menus 3-39 3821-A2-GB20-40 January 1999 V.42/MNP/Buffer V.42/MNP/Buffer configuration options determine the type of error correction and flow control used by themodems and attached DTEs. Some choices within this group may not appear depending upon how previous configuration options havebeen sel...

Page 70 - The Test configuration options determine specifics,; Test Configuration Options; Disable – Allows a test to run indefinitely.

COMSPHERE 3821Plus Modem 3-44 January 1999 3821-A2-GB20-40 Test The Test configuration options determine specifics, such as the duration of a test, for the various diagnostictests available to the modem. Table 3-10 shows each Test configuration option as it appears on the LCD. Table 3-10 Test Config...

Page 71 - Misc; The Miscellaneous configuration options determine; Miscellaneous Configuration Options

SDCP Menus 3-45 3821-A2-GB20-40 January 1999 Misc The Miscellaneous configuration options determine specifics for various functions, including networkmanagement parameters and remote modem access. Table 3-11 shows each Misc (Miscellaneous) configuration option as it appears on the LCD. Table 3-11 (1...

Page 73 - Security Configuration Options; Security; Control Branch; DiscServLine Download; Control; Reset; WARNING; Service Line or Disconnect Service Line; Call

SDCP Menus 3-47 3821-A2-GB20-40 January 1999 Security Configuration Options The Security configuration options group is described in Chapter 7, Security . Control Branch The Control branch of the Top-Level menu allows you to manage hardware and software functions, such asspeaker volume, reset, busy ...

Page 74 - Download Code; Clone To Remote; Editing and Saving a; To Local via DTE

COMSPHERE 3821Plus Modem 3-48 January 1999 3821-A2-GB20-40 Download Code The Download Code function allows firmware to be loaded into a modem from another modem or from aDTE. There are two selections under Download Code: Clone to Remote and To Local via DTE. Clone toRemote is used to transfer an exa...

Page 75 - page A; Download Failure; Remote Branch; Remote Access; Security Branch

SDCP Menus 3-49 3821-A2-GB20-40 January 1999 Automatic FirmwareDownload New releases may be available for the 3821Plus modem. The latest 3821Plus firmware is avaiable at nocharge from the Automatic Firmware Download Center.Refer to page A in the front of this document for contact information. To dow...

Page 77 - AT Commands and S-Registers; Escape Sequence and Escape Guard Time

4-1 3821-A2-GB20-40 January 1999 AT Commands and S-Registers Overview 4-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Operating Modes 4-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

Page 78 - Command Guidelines; AT Command List

COMSPHERE 3821Plus Modem 4-2 January 1999 3821-A2-GB20-40 To enter online Command mode while in Data mode, enter the following sequence: TYPE: + + + Use the O command to return to Data mode from online Command mode. Enter the following command: TYPE: ATO PRESS: Enter Command Guidelines Review the fo...

Page 79 - Plus AT Commands; n – Dial

AT Commands and S-Registers 4-3 3821-A2-GB20-40 January 1999 Table 4-1 (1 of 13) 3821 Plus AT Commands *** – AT Command Recovery ModeAllows the modem to remain in Asynchronous data mode so that AT commands can be used to change the modem’scurrent configuration. Use this command when AT commands are ...

Page 80 - n – Dial Stored Number

COMSPHERE 3821Plus Modem 4-4 January 1999 3821-A2-GB20-40 Table 4-1 (2 of 13) 3821 Plus AT Commands D n, continued R – Reverse Dial mode. Causes the originating modem to send out an answertone once it no longer detects ringback.(Ringback is the ring you hear at the originating site when making a cal...

Page 81 - n – Result Codes

AT Commands and S-Registers 4-5 3821-A2-GB20-40 January 1999 Table 4-1 (3 of 13) 3821 Plus AT Commands P – Pulse DialSets the modem for Pulse Dial mode. See D command. Q n – Result Codes Result codes are informational messages (such as Connect and Ring) sent from the modem and displayed on theasynch...

Page 82 - n – Extended Result Codes, Dial Tone Detect, and Busy Tone Detect; Enable. Sets the modem for dial tone detect.; n – Long Space Disconnect

COMSPHERE 3821Plus Modem 4-6 January 1999 3821-A2-GB20-40 Table 4-1 (4 of 13) 3821 Plus AT Commands X n – Extended Result Codes, Dial Tone Detect, and Busy Tone Detect The X n command sets three configuration options simultaneously: Extended Dial Tone Busy Tone Result Codes Detect Detect X0 Disable ...

Page 83 - F – Clear Error Buffer

AT Commands and S-Registers 4-7 3821-A2-GB20-40 January 1999 Table 4-1 (5 of 13) 3821 Plus AT Commands ″ F – Clear Error Buffer Clears the buffer where information about the last critical error is stored. For service personnel use only. ″ F Clear error buffer. ″ H n – V.42bis Compression Enables or ...

Page 84 - n – DTR Action

COMSPHERE 3821Plus Modem 4-8 January 1999 3821-A2-GB20-40 Table 4-1 (6 of 13) 3821 Plus AT Commands &D n – DTR Action Data Terminal Ready (DTR) is a signal from the DTE to the modem indicating that the DTE is connected and ready foroperation. &D0 Ignore. Modem ignores the true status of DTR ...

Page 85 - n – Dial Transmit Level for Cellular Auto; n – Dial Transmit Type

AT Commands and S-Registers 4-9 3821-A2-GB20-40 January 1999 Table 4-1 (7 of 13) 3821 Plus AT Commands & I n – Dial Transmit Level for Cellular Auto When Dial Transmit Level Type is set to Permissive, & I n sets Dial Transmit Level to a value between –10 and – 32 dBm. & I 99 and & I ...

Page 86 - n or &Qn – Async/Sync Mode and DTE Dialer Type; n – RTS Action

COMSPHERE 3821Plus Modem 4-10 January 1999 3821-A2-GB20-40 Table 4-1 (8 of 13) 3821 Plus AT Commands &M n or &Qn – Async/Sync Mode and DTE Dialer Type Sets the modem for either asynchronous or synchronous operation and selects the type of dialing method the modemuses. &M, &M0, &Q...

Page 87 - n – DSR Control

AT Commands and S-Registers 4-11 3821-A2-GB20-40 January 1999 Table 4-1 (9 of 13) 3821 Plus AT Commands &S n – DSR Control Data Set Ready (DSR) is a signal from the modem to the DTE indicating the modem is connected and ready foroperation. &S, &S0 Forced On. Forces DSR output ON constant...

Page 88 - n – Transmit Clock Source; n – Error Control Fallback Character

COMSPHERE 3821Plus Modem 4-12 January 1999 3821-A2-GB20-40 Table 4-1 (10 of 13) 3821 Plus AT Commands &X n – Transmit Clock Source Determines the source of timing for synchronous data transmitted from the DTE. &X, &X0 Internal. Modem provides transmit clock source for synchronous data (P...

Page 89 - – Service Class Selection

AT Commands and S-Registers 4-13 3821-A2-GB20-40 January 1999 Table 4-1 (11 of 13) 3821 Plus AT Commands %C n – MNP5 Data Compression Determines if the modem uses MNP Class 5 data compression. It can be set independently of V.42bis data compression.Online changes do not take effect until a disconnec...

Page 90 - n – Buffer Control, Send Break Control, Break Forces Escape; n – Error Control Mode

COMSPHERE 3821Plus Modem 4-14 January 1999 3821-A2-GB20-40 Table 4-1 (12 of 13) 3821 Plus AT Commands \K n – Buffer Control, Send Break Control, Break Forces Escape The \K n command sets three configuration options simultaneously: Break Send Break Buffer Break Forces Control Control Escape \K0 Disca...

Page 91 - n – No Data Disconnect Timer; n – XON/XOFF Passthrough

AT Commands and S-Registers 4-15 3821-A2-GB20-40 January 1999 Table 4-1 (13 of 13) 3821 Plus AT Commands \ – The \Q n command controls two configuration options simultaneously: Flow Control Flow Control of DTE of Modem \Q0 Disable Disable \Q1 XON/XOFF XON/XOFF \Q2 CTS to DTE Disable \Q3 CTS to DTE R...

Page 92 - The factory setting is 1.

COMSPHERE 3821Plus Modem 4-16 January 1999 3821-A2-GB20-40 S-Register List S-registers affect the operating parameters of the 3821Plus modem. These registers are applicable onlywhen the DTE Dialer Type configuration option is set forAT. (See &Mn and &Qn commands.) S-registers can be displaye...

Page 94 - S38 – DTR Continuous Repeat

COMSPHERE 3821Plus Modem 4-18 January 1999 3821-A2-GB20-40 Table 4-2 (3 of 10) 3821 Plus S-Registers S14 – Asymmetric Rate ModeRegister determines whether VF rates for transmitting and receiving are identical when using V.34 modulation. Enablingthe function permits the two rates to be different. Reg...

Page 96 - The factory setting is 0 dBm.

COMSPHERE 3821Plus Modem 4-20 January 1999 3821-A2-GB20-40 Table 4-2 (5 of 10) 3821 Plus S-Registers S44 – Leased Line RateDetermines the modem’s highest data rate and modulation scheme for operation on 2-wire leased lines in either Answeror Originate mode. Register has the following values (shown i...

Page 102 - n is one of the following storage areas:

COMSPHERE 3821Plus Modem 4-26 January 1999 3821-A2-GB20-40 Recovering AT Commands Certain dialing methods, such as V.25bis and synchronous operation, disable the use of AT commandsand place the modem into a state known as Dumb mode.The 3821Plus is capable of normal operation when inDumb mode. Moreov...

Page 103 - Initialization Strings; Synchronous Leased-Line Applications

AT Commands and S-Registers 4-27 3821-A2-GB20-40 January 1999 Initialization Strings An initialization string contains several AT commands that are entered at once to program the modem for aspecific application. The following initialization strings identify essential AT commands that directly impact...

Page 105 - Fax Operation

5-1 3821-A2-GB20-40 January 1999 Fax Operation Overview 5-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Fax Operation 5-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

Page 107 - Control Remote

6-1 3821-A2-GB20-40 January 1999 Remote Access Overview 6-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Remote Access 6-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

Page 109 - Administration Password

7-1 3821-A2-GB20-40 January 1999 Security Overview 7-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Password Types 7-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

Page 110 - VF Passwords; VF passwords consist of DTMF tones and are entered; DTE Passwords; DTE passwords are entered by the originating caller; Originate Security; ATD is the AT dial command.; Answer Security

COMSPHERE 3821Plus Modem 7-2 January 1999 3821-A2-GB20-40 VF Passwords VF passwords consist of DTMF tones and are entered by the originating caller using the AT Dial (D) command,or the keypad of an attached telephone. They must consistof eight decimal digits, 0 through 9, and are terminatedwith the ...

Page 111 - Callback Security; Callback Security causes the responding modem to; The Security branch of the Top-Level menu allows you; Set Access Ctrl; Set Access Control contains the Edit Password Table,

Security 7-3 3821-A2-GB20-40 January 1999 Callback Security Callback Security causes the responding modem to disconnect and call back to the phone number provided bythe user at the originating modem. The user enters thenumber, when prompted by the remote modem, as aDirectory location 1–10 preceded b...

Page 112 - Select Index; Edit Password Table Group Options; DTE Entry

COMSPHERE 3821Plus Modem 7-4 January 1999 3821-A2-GB20-40 EditPassWdTable The Password Table is the modem’s security database. It contains all essential information for each passwordstored in the modem’s nonvolatile memory. Theinformation associated with each password is known as arecord. Records ar...

Page 114 - Set Answer Sec; Set Answer Security determines if dial access security; Set Answer Security Group Option; No Answer Security – Disables the dial access security feature.

COMSPHERE 3821Plus Modem 7-6 January 1999 3821-A2-GB20-40 Set Answer Sec Set Answer Security determines if dial access security is enabled or disabled. This method of inbound security isconfigured in the answering modem. Although this alsoappears under the Security Configuration Option group, itcan ...

Page 115 - Set Orig Secur; Set Originate Security controls whether or not the; Set CallBack Sec; For an extra level of security, a modem can be directed; Set Originate Security Group Option; EnaOrigSec; Set Callback Security Group Option; No_CallBack – Disables callback security.

Security 7-7 3821-A2-GB20-40 January 1999 Set Orig Secur Set Originate Security controls whether or not the modem can originate a call using AT commands when thedial access security feature is installed. This method ofoutbound security only applies to modems originating acall. To access Set_Orig_Sec...

Page 116 - Set Admin PsWd; Reset Security; CAUTION

COMSPHERE 3821Plus Modem 7-8 January 1999 3821-A2-GB20-40 Set Admin PsWd Set Administration Password is used to change the Administration Password value. NOTE If this value is forgotten, then theonly way to access any of thesecurity functions is by selectingReset Security. This restores thepassword ...

Page 117 - The Security Configuration Options group under the

Security 7-9 3821-A2-GB20-40 January 1999 Security ConfigurationOptions The Security Configuration Options group under the Configure branch allows you to view and set dial accesssecurity parameters. Table 7-5 shows each Security configuration option as it appears on the LCD. The factory default valu...

Page 119 - Disable Enable

Security 7-11 3821-A2-GB20-40 January 1999 Table 7-5 (3 of 3) Security Configuration Options Originate_Secur: No_OrigSecNxt No_OrigSec Ena_Orig_Sec Originate Security Mode. This configuration option is read-only and cannot be changed from the Configure branch; itcan be changed only with an AT comman...

Page 121 - SDCP Menu Tree; The following pages contain graphic representations of

A-1 3821-A2-GB20-40 January 1999 SDCP Menu Tree Overview A-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Overview The following pages contain graphic representations of the general menu structure ...

Page 125 - lists all the result codes 3821Plus modems; Result Codes

B-1 3821-A2-GB20-40 January 1999 Result Codes Overview B-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Overview Table B-1 lists all the result codes 3821Plus modems may send to the DTE. Result cod...

Page 129 - Troubleshooting; This appendix points out basic problems that can occur; Modem Health

C-1 3821-A2-GB20-40 January 1999 Troubleshooting Overview C-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Automatic Firmware Download C-5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

Page 131 - Modem – VF Connection

Troubleshooting C-3 3821-A2-GB20-40 January 1999 Table C-5 (1 of 2) Modem – VF Connection Symptom Action Modem does not receive adial tone Check the VF line connection. Verify dial tone at the source. Modem does not gooff-hook and answer anincoming call Verify that the Auto-Answer Ring Count configu...

Page 135 - Technical Specifications; Plus Technical Specifications; APPROVALS

D-1 3821-A2-GB20-40 January 1999 Technical Specifications Table D-1 (1 of 2) Model 3821 Plus Technical Specifications Specifications Description APPROVALS Refer to the label on your modem or contact your sales representative. COMPATIBILITY AND VF DATA RATES Dial-Line ModulationsITU-T V.34 (33,600, 3...

Page 136 - ENVIRONMENT

COMSPHERE 3821Plus Modem D-2 January 1999 3821-A2-GB20-40 Table D-1 (2 of 2) Model 3821 Plus Technical Specifications Specifications Description ENVIRONMENT Operating Temperature Relative Humidity Shock and Vibration Storage Temperature 32 ° F (0 ° C) to 122 ° F (50 ° C) 5% to 90% (noncondensing) Wi...

Page 137 - Pin Assignments; lists the EIA-232-E pin assignments for the

E-1 3821-A2-GB20-40 January 1999 Pin Assignments EIA-232-E Pin Assignments E-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . JM8 to RJ11 Crossover Cable E-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....

Page 138 - For 2-wire leased-line connections to a JM8 network

COMSPHERE 3821Plus Modem E-2 January 1999 3821-A2-GB20-40 JM8 to RJ11 Crossover Cable For 2-wire leased-line connections to a JM8 network interface, an 8-position to 6-position crossover cable (see Figure E-1 ) must be used according to the following FCC requirements: ‘‘The RJ series of jacks should...

Page 139 - NIM Cable Pin Assignments; lists the pin assignments for the 50-pin cable

Pin Assignments E-3 3821-A2-GB20-40 January 1999 NIM Cable Pin Assignments Table E-2 lists the pin assignments for the 50-pin cable connected to the NIM. Table E-2 NIM Cable Pin Assignments Carrier Slot Modem Tip Ring Pair Colors 1 or 9 A 26 1 White/Blue B 34 9 Red/Brown C 42 17 Yellow/Orange 2 or 1...

Page 141 - and Responses; ITU-T V.25bis is an international dialing protocol that; Plus modem must be

F-1 3821-A2-GB20-40 January 1999 ITU-T V.25bis Dialing Commands and Responses Overview F-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Call Request Commands F-2 . . . . . . . . . . . . . . . . . ....

Page 142 - Call Request Commands; x is directory location 1–10.; Call Response; xx is

COMSPHERE 3821Plus Modem F-2 January 1999 3821-A2-GB20-40 Call Request Commands Call Request commands are issued from the DTE to the modem and are responsible for initiating any dialcalls. Call Request commands include Call Request withNumber Provided (CRN), Call Request with StoredMemory Address Pr...

Page 143 - Call Answer Commands; x is a directory location.

ITU-T V.25bis Dialing Commands and Responses F-3 3821-A2-GB20-40 January 1999 Call Connecting (CNX) The CNX response informs the DTE that the modem has connected to the remote modem. CNX is similar to theAT result code CONNECT. The CNX response format is CNX. Call Answer Commands Call Answer command...

Page 144 - Command Response; CU; CALL REQUEST COMMANDS

COMSPHERE 3821Plus Modem F-4 January 1999 3821-A2-GB20-40 Command Response A Command Response indicates that the command entered was a valid or invalid entry. Command Responseincludes Valid (VAL) and Invalid (INV). Valid (VAL) The VAL response indicates that the modem has accepted the V.25bis comman...

Page 145 - lists V.25bis response messages supported by; V.25bis Response Messages; CALL RESPONSE

ITU-T V.25bis Dialing Commands and Responses F-5 3821-A2-GB20-40 January 1999 Table F-2 lists V.25bis response messages supported by the 3821Plus modem. Table F-2 V.25bis Response Messages V.25bis Command Description AT Command/Result Code Equivalent CALL RESPONSE CFI Call Failure Indication BUSY, N...

Page 147 - Equipment

G-1 3821-A2-GB20-40 January 1999 Equipment List Equipment Order Number Part Number 3821 Plus Modem Card (three modems per card) 3821-B1-001 — NIM with Make Busy and Service Line Features 3000-F1-027 — NIM without Make Busy and Service Line Features 3000-F1-028 — DTE Interface Assembly (8-slot, 24-po...

Page 150 - Configuration Options by Country (A through M); Strap Description

COMSPHERE 3821Plus Modem H-2 January 1999 3821-A2-GB20-40 ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Table H-1 (1 of 5) Configuration Options by Country (A through M) ÁÁÁÁÁÁÁÁÁ Á ÁÁÁÁÁÁÁ Á Á ÁÁÁÁÁÁÁ Á Á ÁÁ...

Page 151 - AT Command

Country-Specific Configuration Options H-3 3821-A2-GB20-40 January 1999 ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Table H-1 (2 of 5) Configuration Options by Country (A through M) Australia Japan Italy Isra...

Page 155 - Configuration Options by Country (N through Z)

Country-Specific Configuration Options H-7 3821-A2-GB20-40 January 1999 ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Table H-2 (1 of 5) Configuration Options by Country (N through Z) ÁÁÁÁÁÁÁÁÁ Á ÁÁÁÁÁÁÁ Á Á ...

Page 161 - Glossary; To automatically determine the asynchronous DTE data rate.

Glossary-1 3821-A2-GB20-40 January 1999 Glossary Active (Operating) A configuration area containing configuration options currently in use by the modem.When a power cycle occurs, a reset is performed, or a save is issued, this area is updatedwith the contents of Active (Saved). Active (Saved) A nonv...

Page 162 - A capability to respond to a call received over a dial line.

COMSPHERE 3821Plus Modem Glossary-2 January 1999 3821-A2-GB20-40 automatic answer A capability to respond to a call received over a dial line. automode To change modulations or rates within a modulation when modems first connect. Amodem may automode to a different modulation than what it is configur...

Page 163 - An outlet on equipment and cables that provides a connection.

Glossary Glossary-3 3821-A2-GB20-40 January 1999 configuration option Modem software that sets specific operating parameters for the modem. Sometimesreferred to as straps. connector An outlet on equipment and cables that provides a connection. CSA Canadian Standards Association. CTS Clear to Send. A...

Page 165 - A unit of frequency (hertz) that equals one cycle per second.

Glossary Glossary-5 3821-A2-GB20-40 January 1999 handshaking The exchange of predetermined codes and signals (tones) to establish a connectionbetween two modems. HDLC High-level Data Link Control. A communications protocol defined by ISO. host A computer attached to a network that shares its informa...

Page 166 - A three-digit code indicating the modem’s highest VF data rate.

COMSPHERE 3821Plus Modem Glossary-6 January 1999 3821-A2-GB20-40 Originate mode The state of a modem ready to transmit a call. In a dial network, it is the modem thatmakes the call. In a leased-line network, it is one of two sides of the network that isselected to be the originating modem. parity A ...

Page 167 - Universal Service Ordering Codes.

Glossary Glossary-7 3821-A2-GB20-40 January 1999 S-registers Registers that contain information affecting modem operation. S-register commandsmust be preceded by the AT prefix. Sync Dial A factory preset configuration area containing configuration options most often used insynchronous dial networks....

Page 168 - ITU-T standard for local and remote diagnostic loopback tests.; A character that tells the DTE or modem to stop transmitting data.; XON

COMSPHERE 3821Plus Modem Glossary-8 January 1999 3821-A2-GB20-40 V.42bis ITU-T standard for data compression. V.54 ITU-T standard for local and remote diagnostic loopback tests. VF Voice Frequency. The part of the audio frequency range used to transmit voice sound(usually 300 Hz to 3400 Hz). This ba...

Page 169 - Index; Symbols

Index-1 3821-A2-GB20-40 January 1999 Index Symbols ! (hook flash), 4-4“,” dial modifier (Pause), 4-3“,” Pause Time (S8), 4-17“;” (return to command mode), 4-4@ (quiet answer), 4-4 Numbers 2-wire leased line connection, 2-2, E-23821Plus modem AT commands, 4-2card installation, 2-4description, 1-1feat...