Instruction/ maintenance manual of the product 3821PLUS Paradyne
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COMSPHERE 3821 P LUS MODEM USER’S GUIDE Document No. 3821-A2-GB20-40 January 1999.
COMSPHERE 3821 Plus Modem A January 1999 3821-A2-GB20-40 COMSPHERE 3821 Plus Modem User ’s Guide 3821-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 limited revision of this manual.
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.
COMSPHERE 3821 Plus Modem C January 1999 3821-A2-GB20-40 Notices .
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 in the installation and operation manual.
COMSPHERE 3821 Plus Modem E January 1999 3821-A2-GB20-40 Canada Notice to Users of the Canadian Public Switched T elephone Network The Canadian Department of Communications label identifies certified equipment. This certification means that the equipment meets certain telecommunications network protective, operational and safety requirements.
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 to multipoint or point-to-point circuits. The apparatus does not require signalling or otherwise use the frequency range 0 –200 Hz.
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i 3821-A2-GB20-40 January 1999 T able of Contents Preface Objectives and Reader Assumptions v . . . . . . . . . . . . . . . . . . . . . . . . . How to Use This Manual v . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Related Documents vi .
COMSPHERE 3821 Plus Modem ii January 1999 3821-A2-GB20-40 4. A T Commands and S-Registers Overview 4-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Operating Modes 4-1 . . . . . . . . . . . . . . . . . . .
T able of Contents iii 3821-A2-GB20-40 January 1999 D. T echnical Specifications E. Pin Assignments EIA-232-E Pin Assignments E-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . JM8 to RJ1 1 Crossover Cable E-2 . . . . . . . . . . . . . .
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v 3821-A2-GB20-40 January 1999 Preface Objectives and Reader Assumptions This guide describes how to install the 3821 Plus circuit card and operate the 3821 Plus modem. It is intended for all users of the 3821 Plus modem. Each 3821 Plus card comprises three modems.
COMSPHERE 3821 Plus Modem vi January 1999 3821-A2-GB20-40 Related Documents 3000-A2-GA31 COMSPHERE 3000 Series Carrier Installation Manual 3980-A2-GB30 COMSPHERE 3800Plus Modems, User ’ s Guide 6700.
1-1 3821-A2-GB20-40 January 1999 Introduction Overview 1-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Features 1-1 . . . . . . . . . . . . . . . .
COMSPHERE 3821 Plus Modem 1-2 January 1999 3821-A2-GB20-40 • Storage of up to 10 telephone numbers to directory locations. • Originate Security and three Answer Security modes. • Callback Security with telephone directory index or telephone number .
Introduction 1-3 3821-A2-GB20-40 January 1999 T able 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 its operation.
COMSPHERE 3821 Plus 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 the 3821 Plus modem. This interface includes the status LEDs, and a two-line, 32-character Liquid Crystal Display (LCD) and keypad ( Figure 1-2 ).
2-1 3821-A2-GB20-40 January 1999 3821 Plus Modem Installation Overview 2-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3821 Plus Installation 2-1 .
COMSPHERE 3821 Plus 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 INTERF ACE MODULE (NIM) NIM COVER ST ANDOFF 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 3000 Series Carrier .
3821 Plus 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 are installing only one interface assembly , it must be mounted on the same side you installed the NIM.
COMSPHERE 3821 Plus Modem 2-4 January 1999 3821-A2-GB20-40 Install the Circuit Card Slide the 3821 Plus card into its slot in the 3000 Series Carrier .
3821 Plus Modem Installation 2-5 3821-A2-GB20-40 January 1999 Install Communications Software A computer commands and controls a modem through communications software.
COMSPHERE 3821 Plus Modem 2-6 January 1999 3821-A2-GB20-40 5. Press the key until the appropriate factory preset appears on the LCD, and press the corresponding function key to select your choice. 6. Choose Function appears and displays the Edit and Save functions.
3821 Plus Modem Installation 2-7 3821-A2-GB20-40 January 1999 T o change a factory template using A T commands, perform the following steps (for more information on changing factory templates using A T commands, refer to Chapter 4, A T Commands and S-Registers ).
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3-1 3821-A2-GB20-40 January 1999 SDCP Menus Menu Structure 3-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Modem Status Messages 3-3 . . . . . . . . . . . . .
COMSPHERE 3821 Plus 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 and remote 3821 Plus modems.
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 T op-Level menu, the head of the menu hierarchy .
COMSPHERE 3821 Plus Modem 3-4 January 1999 3821-A2-GB20-40 T able 3-1 (2 of 3) T op-Level Menu Status Normal Call Setup Messages Indicates Off Hook The modem is off-hook and waiting to dial a telephone number . Dialing The remote modem is being dialed.
SDCP Menus 3-5 3821-A2-GB20-40 January 1999 T able 3-1 (3 of 3) T op-Level Menu Status Call Disconnect Messages, continued Indicates LongSpace Disc The modem has disconnected due to the detection of a long space. NoData Disc The modem has disconnected due to a lack of transmitted and received data.
COMSPHERE 3821 Plus Modem 3-6 January 1999 3821-A2-GB20-40 T able 3-3 Dial Access Security Messages Dial Access Security Messages Indicates Get VF PsWd The answering modem is waiting for the originating caller to transmit a VF password. Get DTE PsWd The answering modem is waiting to receive a valid DTE password from the remote DTE.
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 the SDCP is first connected to a 3800 Plus card (using the Select key on the SDCP).
COMSPHERE 3821 Plus Modem 3-8 January 1999 3821-A2-GB20-40 ffff Displays the modem’ s modulation scheme as shown below: V34 indicates V .34 family modulation. V32t indicates V .32 terbo modulation. V32b indicates V .32bis modulation. V32 indicates V .
SDCP Menus 3-9 3821-A2-GB20-40 January 1999 Call Setup Branch The Call Setup branch of the T op-Level menu allows you to dial, disconnect, and answer telephone calls. It also allows you to create and store up to 10 telephone numbers to directory locations.
COMSPHERE 3821 Plus 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 memory locations that allow you to store up to 10 telephone numbers.
SDCP Menus 3-1 1 3821-A2-GB20-40 January 1999 Status Branch The Status branch of the T op-Level menu allows you to view the current status of the dial or leased-line connection, the DTE interface, and the identity (for example, serial number and model number) of your equipment.
COMSPHERE 3821 Plus Modem 3-12 January 1999 3821-A2-GB20-40 Identity Identity displays the modem’ s serial number, model number , firmware revision level, hardware part number and firmware part number . Retrieval of this information is useful if you are purchasing additional or replacement modems and/or making firmware upgrades.
SDCP Menus 3-13 3821-A2-GB20-40 January 1999 T o exit this function and remain in the Status branch, press the key . T o exit and return to the T op-Level menu, press the key . T est Branch The T est branch of the T op-Level menu allows you to initiate various modem tests.
COMSPHERE 3821 Plus Modem 3-14 January 1999 3821-A2-GB20-40 If the T est Timeout configuration option is enabled, T est Timeout appears at the conclusion of the test. If it is disabled, the test operates until aborted. For more information on the T est Timeout configuration option, refer to T able 3-10 in this chapter .
SDCP Menus 3-15 3821-A2-GB20-40 January 1999 T o exit this function and remain in the T est branch, press the key . T o exit and return to the T op-Level menu, press the key . Configure Branch After installing a 3821 Plus modem, you set its software configuration options using either the SDCP or the A T command set.
COMSPHERE 3821 Plus 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 Answ er Originate Ld Edi.
SDCP Menus 3-17 3821-A2-GB20-40 January 1999 Scroll to and select the Misc configuration options group. F1 Edit StrapGroup < T est Misc F2 F3 F1 StrapsWhenDisc > Nxt No_Change F2 F3 Select Nxt until RemAccssPasswrd appears. F1 RemAccssPasswrd Nxt ąĄ ° 0 0000000 F2 F3 Select the F2 ( ° ) key to increment password values.
COMSPHERE 3821 Plus Modem 3-18 January 1999 3821-A2-GB20-40 • The key causes you to exit the Configure branch and return to the T op-Level menu. If any changes are made to configuration options, the SDCP allows you to save these changes to either the Active (Saved), Customer 1, or Customer 2 configuration areas.
SDCP Menus 3-19 3821-A2-GB20-40 January 1999 T able 3-4 (1 of 6) DTE Interface Configuration Options Async/Sync Mode: Async Nxt Async Sync Asynchronous/Synchronous Mode.
COMSPHERE 3821 Plus Modem 3-20 January 1999 3821-A2-GB20-40 T able 3-4 (2 of 6) DTE Interface Configuration Options Asyn Parity Bit: None Nxt None Even Odd Mark Space This configuration option only appears if Async/Sync Mode is configured for Async or DTE Dialer T ype is enabled.
SDCP Menus 3-21 3821-A2-GB20-40 January 1999 T able 3-4 (3 of 6) DTE Interface Configuration Options DTR Action: Ignore Nxt Stndrd_RS232 Ignore CntrlsOnHook Off=ReloadStrp Off=CmdMode Data T erminal Ready Action. DTR is a signal from the DTE to the modem indicating that the DTE is connected and ready for operation.
COMSPHERE 3821 Plus Modem 3-22 January 1999 3821-A2-GB20-40 T able 3-4 (4 of 6) DTE Interface Configuration Options RTS Action: Ignore Nxt 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.
SDCP Menus 3-23 3821-A2-GB20-40 January 1999 T able 3-4 (5 of 6) DTE Interface Configuration Options RTS/CTS Delay: 0 msec Nxt 0msec 10msec 50msec 150msec 600msec Request-to-Send/Clear-to-Send Delay . RTS/CTS Delay sets the delay time between the modem receiving R TS from the DTE and the modem sending CTS to the DTE.
COMSPHERE 3821 Plus Modem 3-24 January 1999 3821-A2-GB20-40 T able 3-4 (6 of 6) DTE Interface Configuration Options TX Clock Source: Internal Nxt Internal External RXC_Loop This configuration option only appears when Async/Sync Mode is configured for Sync.
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 and control.
COMSPHERE 3821 Plus Modem 3-26 January 1999 3821-A2-GB20-40 T able 3-5 (2 of 5) DTE Dialer Configuration Options *Escape GuardTim: 1sec Nxt 1sec 200msec 400msec 600msec 800msec 2sec Escape Guard T ime. Determines the length of the required pause before and after the escape sequence is issued.
SDCP Menus 3-27 3821-A2-GB20-40 January 1999 T able 3-5 (3 of 5) DTE Dialer Configuration Options *Linefeed Char: 010 ASCI Nxt ↑ 010 ASCI Line Feed Character . Sets the character used to perform a line feed in Command mode for responses from the modem.
COMSPHERE 3821 Plus Modem 3-28 January 1999 3821-A2-GB20-40 T able 3-5 (4 of 5) DTE Dialer Configuration Options *ResultCode Form: Words Nxt Words Numbers (1) Numbers (2) Result Codes Format. Controls whether or not result codes appear as words or as numeric codes.
SDCP Menus 3-29 3821-A2-GB20-40 January 1999 T able 3-5 (5 of 5) DTE Dialer Configuration Options V25bis IdleFill: Mark Nxt 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 to the DTE using the same idle fill.
COMSPHERE 3821 Plus 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 originate calls. T able 3-6 shows each Line Dialer configuration option as it appears on the LCD.
SDCP Menus 3-31 3821-A2-GB20-40 January 1999 T able 3-6 (2 of 4) Line Dialer Configuration Options BusyT one Detect: Enable Nxt Enable Disable Busy T one Detect.
COMSPHERE 3821 Plus Modem 3-32 January 1999 3821-A2-GB20-40 T able 3-6 (3 of 4) Line Dialer Configuration Options Long Space Disc: Enable Nxt Enable Disable Long Space Disconnect. Determines the modem’s response to a continuous spacing condition sent from the remote modem when it goes on-hook.
SDCP Menus 3-33 3821-A2-GB20-40 January 1999 T able 3-6 (4 of 4) Line Dialer Configuration Options NoDataDiscT rig: TXD and RXD Nxt TXD and RXD TXD Only RXD Only TXD or RXD No Data Disconnect T rigger Signal.
COMSPHERE 3821 Plus 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.
SDCP Menus 3-35 3821-A2-GB20-40 January 1999 T able 3-7 (2 of 3) Dial Line Configuration Options Automode: Enable Nxt Enable Disable System 85 Automode.
COMSPHERE 3821 Plus Modem 3-36 January 1999 3821-A2-GB20-40 T able 3-7 (3 of 3) Dial Line Configuration Options V22b Guard T one: Disable Nxt Disable 550Hz 1800Hz V .22bis Guard T one. Determines whether the V .22bis guard tone is disabled, set to 550 Hz, or set to 1800 Hz.
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 factory preset template, or if the &L1, &L2, &L3, or &L4 command is entered.
COMSPHERE 3821 Plus Modem 3-38 January 1999 3821-A2-GB20-40 T able 3-8 (2 of 2) Leased Line Configuration Options Autorate: Enable Nxt Enable Disable Autorate. The modems adapt to VF line condition and connect at the optimum rate during initial line establishment.
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 the modems and attached DTEs. Some choices within this group may not appear depending upon how previous configuration options have been selected.
COMSPHERE 3821 Plus Modem 3-40 January 1999 3821-A2-GB20-40 T able 3-9 (2 of 5) V .42/MNP/Buffer Configuration Options V42bis Compress: Enable Nxt Enable Disable This configuration option only appears if Async/Sync Mode is configured for Async and the Error Control Mode configuration option is set for V42/MNPorBfr or V42/MNPorDsc.
SDCP Menus 3-41 3821-A2-GB20-40 January 1999 T able 3-9 (3 of 5) V .42/MNP/Buffer Configuration Options Flw Cntl of DTE: CTS_to_DTE Nxt CTS_to_DTE Disable XON/XOFF This configuration option only appears if Async/Sync Mode is configured for Async. Flow Control of DTE.
COMSPHERE 3821 Plus Modem 3-42 January 1999 3821-A2-GB20-40 T able 3-9 (4 of 5) V .42/MNP/Buffer Configuration Options Mdm/Mdm FlowCtl: Disable Nxt Disable Enable This configuration option only appears if Async/Sync Mode is configured for Async and the Flow Control configuration option is configured for XON/XOFF .
SDCP Menus 3-43 3821-A2-GB20-40 January 1999 T able 3-9 (5 of 5) V .42/MNP/Buffer Configuration Options TXBuffDiscDelay: 10sec Nxt 10sec Disable 60sec This configuration option only appears when Async/Sync Mode is configured for Async, and Error Control Mode is not configured for DirectMode.
COMSPHERE 3821 Plus Modem 3-44 January 1999 3821-A2-GB20-40 T est The T est configuration options determine specifics, such as the duration of a test, for the various diagnostic tests available to the modem. T able 3-10 shows each T est configuration option as it appears on the LCD.
SDCP Menus 3-45 3821-A2-GB20-40 January 1999 Misc The Miscellaneous configuration options determine specifics for various functions, including network management parameters and remote modem access. T able 3-1 1 shows each Misc (Miscellaneous) configuration option as it appears on the LCD.
COMSPHERE 3821 Plus Modem 3-46 January 1999 3821-A2-GB20-40 T able 3-1 1 (2 of 2) Miscellaneous Configuration Options NetMngmtAddress: 256 Nxt 256 Network Management Address. Determines the address used when accessing a locally attached modem from the 6700 Series NMS.
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 T op-Level menu allows you to manage hardware and software functions, such as speaker volume, reset, busy out, and firmware download.
COMSPHERE 3821 Plus 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 a DTE. There are two selections under Download Code: Clone to Remote and T o Local via DTE.
SDCP Menus 3-49 3821-A2-GB20-40 January 1999 Automatic Firmware Download New releases may be available for the 3821 Plus modem. The latest 3821 Plus firmware is avaiable at no charge from the Automatic Firmware Download Center . Refer to page A in the front of this document for contact information.
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4-1 3821-A2-GB20-40 January 1999 A T Commands and S-Registers Overview 4-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Operating Modes 4-1 . . . . .
COMSPHERE 3821 Plus Modem 4-2 January 1999 3821-A2-GB20-40 T o 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: AT O PRESS: Enter Command Guidelines Review the following guidelines before using any A T Commands.
A T Commands and S-Registers 4-3 3821-A2-GB20-40 January 1999 T able 4-1 (1 of 13) 3821 Plus A T Commands *** – A T Command Recovery Mode Allows the modem to remain in Asynchronous data mode so that A T commands can be used to change the modem’s current configuration.
COMSPHERE 3821 Plus Modem 4-4 January 1999 3821-A2-GB20-40 T able 4-1 (2 of 13) 3821 Plus A T 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 call.
A T Commands and S-Registers 4-5 3821-A2-GB20-40 January 1999 T able 4-1 (3 of 13) 3821 Plus A T Commands P – Pulse Dial Sets 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 the asynchronous DTE terminal.
COMSPHERE 3821 Plus Modem 4-6 January 1999 3821-A2-GB20-40 T able 4-1 (4 of 13) 3821 Plus A T Commands X n – Extended Result Codes, Dial T one Detect, and Busy T one Detect The X n command sets thre.
A T Commands and S-Registers 4-7 3821-A2-GB20-40 January 1999 T able 4-1 (5 of 13) 3821 Plus A T 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 .
COMSPHERE 3821 Plus Modem 4-8 January 1999 3821-A2-GB20-40 T able 4-1 (6 of 13) 3821 Plus A T Commands &D n – DTR Action Data T erminal Ready (DTR) is a signal from the DTE to the modem indicating that the DTE is connected and ready for operation.
A T Commands and S-Registers 4-9 3821-A2-GB20-40 January 1999 T able 4-1 (7 of 13) 3821 Plus A T Commands & I n – Dial T ransmit Level for Cellular Auto When Dial T ransmit Level T ype is set to Permissive, & I n sets Dial T ransmit Level to a value between –10 and – 32 dBm.
COMSPHERE 3821 Plus Modem 4-10 January 1999 3821-A2-GB20-40 T able 4-1 (8 of 13) 3821 Plus A T Commands &M n or &Q n – Async/Sync Mode and DTE Dialer T ype Sets the modem for either asynchronous or synchronous operation and selects the type of dialing method the modem uses.
A T Commands and S-Registers 4-1 1 3821-A2-GB20-40 January 1999 T able 4-1 (9 of 13) 3821 Plus A T 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 for operation. &S, &S0 Forced On.
COMSPHERE 3821 Plus Modem 4-12 January 1999 3821-A2-GB20-40 T able 4-1 (10 of 13) 3821 Plus A T Commands &X n – T ransmit 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 (Pin 15).
A T Commands and S-Registers 4-13 3821-A2-GB20-40 January 1999 T able 4-1 (1 1 of 13) 3821 Plus A T 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.
COMSPHERE 3821 Plus Modem 4-14 January 1999 3821-A2-GB20-40 T able 4-1 (12 of 13) 3821 Plus A T Commands K n – Buffer Control, Send Break Control, Break Forces Escape The K n command sets three conf.
A T Commands and S-Registers 4-15 3821-A2-GB20-40 January 1999 T able 4-1 (13 of 13) 3821 Plus A T Commands – .
COMSPHERE 3821 Plus Modem 4-16 January 1999 3821-A2-GB20-40 S-Register List S-registers af fect the operating parameters of the 3821 Plus modem. These registers are applicable only when the DTE Dialer T ype configuration option is set for A T . (See &M n and &Q n commands.
A T Commands and S-Registers 4-17 3821-A2-GB20-40 January 1999 T able 4-2 (2 of 10) 3821 Plus S-Registers S4 – Line Feed Character Determines ASCII value used as the line feed character . Enter a value from 0–127 for the line feed character . Factory setting is 10 (ASCII line feed).
COMSPHERE 3821 Plus Modem 4-18 January 1999 3821-A2-GB20-40 T able 4-2 (3 of 10) 3821 Plus S-Registers S14 – Asymmetric Rate Mode Register determines whether VF rates for transmitting and receiving are identical when using V .34 modulation. Enabling the function permits the two rates to be different.
A T Commands and S-Registers 4-19 3821-A2-GB20-40 January 1999 T able 4-2 (4 of 10) 3821 Plus S-Registers S40 – Auto Make Busy Register determines whether the modem automatically goes into a Make Bu.
COMSPHERE 3821 Plus Modem 4-20 January 1999 3821-A2-GB20-40 T able 4-2 (5 of 10) 3821 Plus S-Registers S44 – Leased Line Rate Determines the modem’s highest data rate and modulation scheme for operation on 2-wire leased lines in either Answer or Originate mode.
A T Commands and S-Registers 4-21 3821-A2-GB20-40 January 1999 T able 4-2 (6 of 10) 3821 Plus S-Registers S49 – T ransmit Buffer Disconnect Delay Determines the maximum amount of time the modem can continue to send data in its T ransmit Buffer to the remote modem after it is commanded by the DTE to disconnect.
COMSPHERE 3821 Plus Modem 4-22 January 1999 3821-A2-GB20-40 T able 4-2 (7 of 10) 3821 Plus S-Registers S63 – V .25bis Idle Character Identifies to the modem the type of idle fill used by the DTE while in V .25bis HDLC or V .25bis Bisync mode. Register has the following values: 0 = Mark 1 = Flag Factory setting is Mark.
A T Commands and S-Registers 4-23 3821-A2-GB20-40 January 1999 T able 4-2 (8 of 10) 3821 Plus S-Registers S76 – Autorate (Dial Line) Determines if the Autorate function is used on dial lines when connected in V .32bis, V .34 terbo , or V .34 mode. Autorate allows the modem to adjust line speed due to varying VF line quality .
COMSPHERE 3821 Plus Modem 4-24 January 1999 3821-A2-GB20-40 T able 4-2 (9 of 10) 3821 Plus S-Registers S84 – A T Command Mode Determines how the modem responds to valid and invalid A T commands. The selections No ERROR and No Strap or ERROR permit installation into applications that are customized for a different modem.
A T Commands and S-Registers 4-25 3821-A2-GB20-40 January 1999 T able 4-2 (10 of 10) 3821 Plus S-Registers S91 – Cellular Enhancement V alid only if ETC is installed. Register determines whether parameters are set to improve performance over a cellular link.
COMSPHERE 3821 Plus Modem 4-26 January 1999 3821-A2-GB20-40 Recovering A T Commands Certain dialing methods, such as V .25bis and synchronous operation, disable the use of A T commands and place the modem into a state known as Dumb mode. The 3821 Plus is capable of normal operation when in Dumb mode.
A T Commands and S-Registers 4-27 3821-A2-GB20-40 January 1999 Initialization Strings An initialization string contains several A T commands that are entered at once to program the modem for a specific application. The following initialization strings identify essential A T commands that directly impact modem operation for a particular application.
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5-1 3821-A2-GB20-40 January 1999 Fax Operation Overview 5-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Fax Operation 5-1 . . . . . . . . . . . . . .
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6-1 3821-A2-GB20-40 January 1999 Remote Access Overview 6-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Remote Access 6-1 . . . . . . . . . . . . .
COMSPHERE 3821 Plus Modem 6-2 January 1999 3821-A2-GB20-40 NOTE If a connection is not established between a local COMSPHERE modem and a remote 3821 Plus modem, the LCD displays Remote Mode Fail – No Circuit . Press any key to return to the T op Level menu, and dial again.
7-1 3821-A2-GB20-40 January 1999 Security Overview 7-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Password T ypes 7-1 . . . . . . . . . . . . . . .
COMSPHERE 3821 Plus 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 A T Dial (D) command, or the keypad of an attached telephone. They must consist of eight decimal digits, 0 through 9, and are terminated with the # symbol.
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 by the user at the originating modem.
COMSPHERE 3821 Plus Modem 7-4 January 1999 3821-A2-GB20-40 EditPassWdT able The Password T able is the modem’ s security database. It contains all essential information for each password stored in the modem’ s nonvolatile memory . The information associated with each password is known as a record.
Security 7-5 3821-A2-GB20-40 January 1999 T able 7-1 (2 of 2) Edit Password T able Group Options Edit PsWd xxxx Nxt yyyyyyyy or zzzzzz Edit Password. Allows the password associated with this index to be changed. NOTE: This security option does not appear if the Password T ype option is set for Cleared.
COMSPHERE 3821 Plus Modem 7-6 January 1999 3821-A2-GB20-40 Set Answer Sec Set Answer Security determines if dial access security is enabled or disabled.
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 A T commands when the dial access security feature is installed. This method of outbound security only applies to modems originating a call.
COMSPHERE 3821 Plus 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 the only way to access any of the security functions is by selecting Reset Security .
Security 7-9 3821-A2-GB20-40 January 1999 Security Configuration Options The Security Configuration Options group under the Configure branch allows you to view and set dial access security parameters. T able 7-5 shows each Security configuration option as it appears on the LCD.
COMSPHERE 3821 Plus Modem 7-10 January 1999 3821-A2-GB20-40 T able 7-5 (2 of 3) Security Configuration Options DTE_PW_T ermChar: 013 Nxt 013 DTE Password T ermination Character . Allows you to change the ASCII character used to indicate the end of a password or User ID entered by an originating user .
Security 7-1 1 3821-A2-GB20-40 January 1999 T able 7-5 (3 of 3) Security Configuration Options Originate_Secur: No_OrigSec Nxt No_OrigSec Ena_Orig_Sec Originate Security Mode. This configuration option is read-only and cannot be changed from the Configure branch; it can be changed only with an A T command.
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A-1 3821-A2-GB20-40 January 1999 SDCP Menu T ree Overview A-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Overview The following pages contain graphic representations of the general menu structure of the SDCP displays.
COMSPHERE 3821 Plus Modem A-2 January 1999 3821-A2-GB20-40 Call_Setup Status T est (Modem Status) Dial Disconnect Answer Change_Directory Director y Locations 1 – 10 Abort Self Loc_Analog_Loop Rem_D.
SDCP Menu T ree A-3 3821-A2-GB20-40 January 1999 Configure Ld EditArea frm: Edit Sav e Choose Function Active (Sa ved) Customer1 Customer2 V42/MNP/Buffer Err Contrl Mode V42bis Compress MNP5 Compress .
COMSPHERE 3821 Plus Modem A-4 January 1999 3821-A2-GB20-40 Control Remote Secondary Prim (data blckd) ( ExitRem appears instead of Remote when using Remote Mode) Does not appear in Remote Mode. (Rem_Digital_Loop, Loc_Digital_Loop, and Pattern appear if the secondary channel is used.
B-1 3821-A2-GB20-40 January 1999 Result Codes Overview B-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Overview T able B-1 lists all the result codes 3821 Plus modems may send to the DTE.
COMSPHERE 3821 Plus Modem B-2 January 1999 3821-A2-GB20-40 T able B-1 (2 of 3) Result Codes Numbers (1) Description Word Numbers (2) 15 14 CONNECT 19200** Connection at 19,200 bps 16 15 CONNECT 7200* .
Result Codes B-3 3821-A2-GB20-40 January 1999 T able B-1 (3 of 3) Result Codes Numbers (1) Description Word Numbers (2) 43 43 CONNECT 21600/ EC*** Connection at 21,600 bps with error control 44 44 CON.
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C-1 3821-A2-GB20-40 January 1999 T roubleshooting Overview C-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Automatic Firmware Download C-5 . . . . .
COMSPHERE 3821 Plus Modem C-2 January 1999 3821-A2-GB20-40 T able C-2 Online Operation Symptom Action Data scrambled or unreadable V erify that the character format (data bits, parity , and stop bits) is set to the same value in both modems.
T roubleshooting C-3 3821-A2-GB20-40 January 1999 T able C-5 (1 of 2) Modem – VF Connection Symptom Action Modem does not receive a dial tone Check the VF line connection.
COMSPHERE 3821 Plus Modem C-4 January 1999 3821-A2-GB20-40 T able C-5 (2 of 2) Modem – VF Connection Symptom Action Intermittent disconnects, high error rates, or excessive retransmissions Use the A T&T7 command to perform a remote digital loopback test with pattern test.
T roubleshooting C-5 3821-A2-GB20-40 January 1999 Automatic Firmware Download New releases may be available for the 3821 Plus modem. The latest 3821 Plus firmware is available at no charge from the Automatic Firmware Download Center . Refer to page A in the front of this document for contact information.
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D-1 3821-A2-GB20-40 January 1999 T echnical Specifications T able D-1 (1 of 2) Model 3821 Plus T echnical Specifications Specifications Description APPROV ALS Refer to the label on your modem or contact your sales representative. COMP A TIBILITY AND VF DA T A RA TES Dial-Line Modulations ITU-T V .
COMSPHERE 3821 Plus Modem D-2 January 1999 3821-A2-GB20-40 T able D-1 (2 of 2) Model 3821 Plus T echnical Specifications Specifications Description ENVIRONMENT Operating T emperature Relative Humidity.
E-1 3821-A2-GB20-40 January 1999 Pin Assignments EIA-232-E Pin Assignments E-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . JM8 to RJ1 1 Crossover Cable E-2 . . . . . . . . . . . .
COMSPHERE 3821 Plus Modem E-2 January 1999 3821-A2-GB20-40 JM8 to RJ1 1 Crossover Cable For 2-wire leased-line connections to a JM8 network interface, an 8-position to 6-position crossover cable (see .
Pin Assignments E-3 3821-A2-GB20-40 January 1999 NIM Cable Pin Assignments T able E-2 lists the pin assignments for the 50-pin cable connected to the NIM.
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F-1 3821-A2-GB20-40 January 1999 ITU-T V .25bis Dialing Commands and Responses Overview F-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Call Request Commands F-2 .
COMSPHERE 3821 Plus 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 dial calls. Call Request commands include Call Request with Number Provided (CRN), Call Request with Stored Memory Address Provided (CRS).
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 the A T result code CONNECT . The CNX response format is CNX.
COMSPHERE 3821 Plus 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 Response includes V alid (V AL) and Invalid (INV). V alid (V AL) The V AL response indicates that the modem has accepted the V .
ITU-T V .25bis Dialing Commands and Responses F-5 3821-A2-GB20-40 January 1999 T able F-2 lists V .25bis response messages supported by the 3821 Plus modem.
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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.
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H-1 3821-A2-GB20-40 January 1999 Country-Specific Configuration Options Configuration Options by Country Code H-1 . . . . . . . . . . . . . . . . . . .
COMSPHERE 3821 Plus Modem H-2 January 1999 3821-A2-GB20-40 T able H-1 (1 of 5) Configuration Options by Country (A through M) Strap Description DCP Choice A T Command Australia Austria Belgium Cyprus .
Country-Specific Configuration Options H-3 3821-A2-GB20-40 January 1999 T able H-1 (2 of 5) Configuration Options by Country (A through M) Australia Japan Italy Israel Germany France Finland Eire Denm.
COMSPHERE 3821 Plus Modem H-4 January 1999 3821-A2-GB20-40 T able H-1 (3 of 5) Configuration Options by Country (A through M) Australia Japan Italy Israel Germany France Finland Eire Denmark Czechia C.
Country-Specific Configuration Options H-5 3821-A2-GB20-40 January 1999 T able H-1 (4 of 5) Configuration Options by Country (A through M) Australia Japan Italy Israel Germany France Finland Eire Denm.
COMSPHERE 3821 Plus Modem H-6 January 1999 3821-A2-GB20-40 T able H-1 (5 of 5) Configuration Options by Country (A through M) Australia Japan Italy Israel Germany France Finland Eire Denmark Czechia C.
Country-Specific Configuration Options H-7 3821-A2-GB20-40 January 1999 T able H-2 (1 of 5) Configuration Options by Country (N through Z) Strap Description DCP Choice A T Command Netherlands New Zeal.
COMSPHERE 3821 Plus Modem H-8 January 1999 3821-A2-GB20-40 T able H-2 (2 of 5) Configuration Options by Country (N through Z) Netherlands United Kingdom T urkey Thailand Switzerland Sweden Spain South.
Country-Specific Configuration Options H-9 3821-A2-GB20-40 January 1999 T able H-2 (3 of 5) Configuration Options by Country (N through Z) Netherlands United Kingdom T urkey Thailand Switzerland Swede.
COMSPHERE 3821 Plus Modem H-10 January 1999 3821-A2-GB20-40 T able H-2 (4 of 5) Configuration Options by Country (N through Z) Netherlands United Kingdom T urkey Thailand Switzerland Sweden Spain Sout.
Country-Specific Configuration Options H-1 1 3821-A2-GB20-40 January 1999 T able H-2 (5 of 5) Configuration Options by Country (N through Z) Netherlands United Kingdom T urkey Thailand Switzerland Swe.
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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 updated with the contents of Active (Saved).
COMSPHERE 3821 Plus Modem Glossary-2 January 1999 3821-A2-GB20-40 automatic answer A capability to respond to a call received over a dial line. automode T o change modulations or rates within a modulation when modems first connect.
Glossary Glossary-3 3821-A2-GB20-40 January 1999 configuration option Modem software that sets specific operating parameters for the modem. Sometimes referred to as straps. connector An outlet on equipment and cables that provides a connection. CSA Canadian Standards Association.
COMSPHERE 3821 Plus Modem Glossary-4 January 1999 3821-A2-GB20-40 directory location Nonvolatile memory that stores up to ten telephone numbers. Each directory location can have up to 40 characters entered.
Glossary Glossary-5 3821-A2-GB20-40 January 1999 handshaking The exchange of predetermined codes and signals (tones) to establish a connection between two modems. HDLC High-level Data Link Control. A communications protocol defined by ISO. host A computer attached to a network that shares its information and devices with the rest of the network.
COMSPHERE 3821 Plus 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 that makes the call. In a leased-line network, it is one of two sides of the network that is selected to be the originating modem.
Glossary Glossary-7 3821-A2-GB20-40 January 1999 S-registers Registers that contain information af fecting modem operation. S-register commands must be preceded by the A T prefix. Sync Dial A factory preset configuration area containing configuration options most often used in synchronous dial networks.
COMSPHERE 3821 Plus 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 V oice Frequency . The part of the audio frequency range used to transmit voice sound (usually 300 Hz to 3400 Hz).
Index-1 3821-A2-GB20-40 January 1999 Index Symbols ! (hook flash), 4-4 “,” dial modifier (Pause), 4-3 “,” Pause T ime (S8), 4-17 “;” (return to command mode), 4-4 @ (quiet answer), 4-4 Num.
COMSPHERE 3821 Plus Modem Index-2 January 1999 3821-A2-GB20-40 A T commands, continued E (Command Character Echo), 3-26, 4-4 H (Hook Switch Control), 4-4 I (Identification), 4-4 O (Online Mode), 4-4 Q.
Index Index-3 3821-A2-GB20-40 January 1999 default configuration options, 2-5 setting with A T commands, 2-6 setting with DCP , 2-5 Dial, 3-9 Dial (A TD), 4-3 Dial Command modifiers P (Pulse dial), 3-.
COMSPHERE 3821 Plus Modem Index-4 January 1999 3821-A2-GB20-40 G gang box, RJ11, 2-2 Get_User_ID, 7-10 H hang up (A TH), 4-4 Hidden Choice Indicators, 1-4 hook flash, 4-4 Hook Switch Control (A TH), 4-4 I Identity , 3-12 Identity (A TI), 4-4 initialization strings, 4-27 DA T AKIT , 4-27 synchronous leased-line applications, 4-27 V .
Index Index-5 3821-A2-GB20-40 January 1999 P P (Pulse dial), 4-3 Parity Bit, 3-20 part numbers, G-1 password Administration, 7-1, 7-8 number of DTE password tries, 7-9 Originate Access, 7-2 Remote Acc.
COMSPHERE 3821 Plus Modem Index-6 January 1999 3821-A2-GB20-40 S-registers, continued S90 (DTE Rate = VF Rate), 3-24, 4-24 S91 (Cellular Enhancement), 3-43, 4-25 S93 (RJ1 1 Cellular Adapt), 3-46, 4-25.
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An important point after buying a device Paradyne 3821PLUS (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Paradyne 3821PLUS yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Paradyne 3821PLUS - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Paradyne 3821PLUS you will learn all the available features of the product, as well as information on its operation. The information that you get Paradyne 3821PLUS will certainly help you make a decision on the purchase.
If you already are a holder of Paradyne 3821PLUS, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Paradyne 3821PLUS.
However, one of the most important roles played by the user manual is to help in solving problems with Paradyne 3821PLUS. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Paradyne 3821PLUS along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center