Paradyne 3910 User Manual

COMSPHERE3900 SERIES MODEMSMODELS 3910 AND 3911POINT-TO-POINT/MULTIPOINTINSTALLATION AND OPERATION MANUALDocument No. 3910-A2-GN32-40September 1998

COMSPHERE 3900 Series Modemsvi September 1998 3910-A2-GN32-40This page intentionally left blank.

COMSPHERE 3900 Series Modems5-38 September 1998 3910-A2-GN32-40Table 5-5(6 of 6)Leased Line Configuration OptionsLease_Lookback: DisableNxt Disable

DCP Configuration5-393910-A2-GN32-40 September 1998Table 5-6(1 of 7)V.42/MNP/Buffer Configuration OptionsErr Contrl Mode: V42/MNPorBfrNxt V42/MNPor

COMSPHERE 3900 Series Modems5-40 September 1998 3910-A2-GN32-40Table 5-6(2 of 7)V.42/MNP/Buffer Configuration OptionsErr Contrl Mode (Continued)Nxt

DCP Configuration5-413910-A2-GN32-40 September 1998Table 5-6(3 of 7)V.42/MNP/Buffer Configuration OptionsEC Negotiat Bfr: DisableNxt Disable Enab

COMSPHERE 3900 Series Modems5-42 September 1998 3910-A2-GN32-40Table 5-6(4 of 7)V.42/MNP/Buffer Configuration OptionsFlw Cntl of DTE: CTS_to_DTENxt

DCP Configuration5-433910-A2-GN32-40 September 1998Table 5-6(5 of 7)V.42/MNP/Buffer Configuration OptionsXON/XOFF Psthru: DisableNxt Disable Enab

COMSPHERE 3900 Series Modems5-44 September 1998 3910-A2-GN32-40Table 5-6(6 of 7)V.42/MNP/Buffer Configuration OptionsBreak Buffr Ctl: Keep_DataNxt

DCP Configuration5-453910-A2-GN32-40 September 1998Table 5-6(7 of 7)V.42/MNP/Buffer Configuration OptionsBuffrDiscDelay: 10secNxt 10sec Disable

COMSPHERE 3900 Series Modems5-46 September 1998 3910-A2-GN32-40TestThe Test configuration options determine specifics, such as the duration of a test,

DCP Configuration5-473910-A2-GN32-40 September 1998Table 5-7(2 of 2)Test Configuration OptionsTest Timeout: DisableNxt Disable 30sec 60sec 24

Table of Contentsvii3910-A2-GN32-40 September 1998List of TablesTable Page1-1       . . . . . . . . . . .

COMSPHERE 3900 Series Modems5-48 September 1998 3910-A2-GN32-40MiscThe Miscellaneous configuration options determine specifics for various functions,

DCP Configuration5-493910-A2-GN32-40 September 1998Table 5-8(2 of 4)Miscellaneous Configuration OptionsSpeaker Volume: MediumNxt Medium Low Hig

COMSPHERE 3900 Series Modems5-50 September 1998 3910-A2-GN32-40Table 5-8(3 of 4)Miscellaneous Configuration OptionsNMS_Call_Msgs: CallCnct&PrgNxt

DCP Configuration5-513910-A2-GN32-40 September 1998Table 5-8(4 of 4)Miscellaneous Configuration OptionsDiag Connection: Modem(DC)Nxt Modem(DC) NM

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6-13910-A2-GN32-40 September 1998Poll List BranchOverviewThe Poll List function is not available on Point-to-Point control modems or MultipointTributa

COMSPHERE 3900 Series Modems6-2 September 1998 3910-A2-GN32-40To access PList from the Top-Level menu, make the following selections:F1Leased:19.2PLis

Poll List Branch6-33910-A2-GN32-40 September 1998If there are modems in the poll list when you select Display,xxx Displays the network management addr

COMSPHERE 3900 Series Modems6-4 September 1998 3910-A2-GN32-40Press the key until Change appears. Select Change.Change allows you to add modems to

Poll List Branch6-53910-A2-GN32-40 September 1998AddThe Add function does not appear in Remote mode or on control modems.Add allows you to add the tri

COMSPHERE 3900 Series Modemsviii September 1998 3910-A2-GN32-40Table PageD-1 V.25bis Commands D-6. . . . . . . . . . . . . . . . . . . . . . . . . . .

COMSPHERE 3900 Series Modems6-6 September 1998 3910-A2-GN32-40Press the key until Acquire appears. Select Acquire.NOTEIf an error message (OtherTe

7-13910-A2-GN32-40 September 1998Control BranchOverviewThe Control branch of the Top-Level menu allows you to manage hardware and softwarefunctions, s

COMSPHERE 3900 Series Modems7-2 September 1998 3910-A2-GN32-40To access Control from the Top-Level menu, make the following selections:F1Leased:19.2Co

Control Branch7-33910-A2-GN32-40 September 1998ResetReset causes the modem to stop operation and perform a complete program restart. The modembegins t

COMSPHERE 3900 Series Modems7-4 September 1998 3910-A2-GN32-40If you want to disable the modem’s data stream, press the F2 key. When the message Comma

Control Branch7-53910-A2-GN32-40 September 1998After selecting the desired interface, the message Command Complete appears on the bottomline of the LC

COMSPHERE 3900 Series Modems7-6 September 1998 3910-A2-GN32-40To remove the modem from Make Busy mode, press the key once and the key untilRem

Control Branch7-73910-A2-GN32-40 September 1998Download SoftwareThe Download Software function sets parameters within the modem when transferring firm

COMSPHERE 3900 Series Modems7-8 September 1998 3910-A2-GN32-40Clone Remote in Point-to-Point ConfigurationsBefore using Clone Remote in point-to-point

Control Branch7-93910-A2-GN32-40 September 1998From the Choose DLL Type screen, press the key until DC_Broadcast appears. Press F1 orF2 to transf

ix3910-A2-GN32-40 September 1998PrefaceObjectives and Reader AssumptionsThis manual describes how to install and operate the COMSPHEREr 391x Series st

COMSPHERE 3900 Series Modems7-10 September 1998 3910-A2-GN32-40• For Single download configurations, know the remote access password and the networkma

Control Branch7-113910-A2-GN32-40 September 1998After completing these actions, proceed to Implementing a Clone Remote Operation on page 7-12.Cloning

COMSPHERE 3900 Series Modems7-12 September 1998 3910-A2-GN32-40Implementing a Clone Remote OperationWARNINGThe modem begins a transfer of its own prog

Control Branch7-133910-A2-GN32-40 September 1998Access Disabled The remote modem’s Access from Remote configuration is disabled.Password Invalid The l

COMSPHERE 3900 Series Modems7-14 September 1998 3910-A2-GN32-40Press the key until VF_Thresh_Update appears. Press any function key to selectVF_Th

Control Branch7-153910-A2-GN32-40 September 1998Press the key to move the cursor to the next position ( 9 ).Select the F2 ( ) key to change the

COMSPHERE 3900 Series Modems7-16 September 1998 3910-A2-GN32-40To correct the invalid VF threshold, press the key to return to the VF ThresholdEdi

8-13910-A2-GN32-40 September 1998Test BranchOverviewThe Test branch of the Top-Level menu allows you to initiate various modem tests. Use thesetests i

COMSPHERE 3900 Series Modems8-2 September 1998 3910-A2-GN32-40To access the Test branch from the Top-Level menu, make the following selections:F1Lease

Test Branch8-33910-A2-GN32-40 September 1998SelfSelf performs an internal self-test of the modem, which takes less than a minute to complete.The modem

COMSPHERE 3900 Series Modemsx September 1998 3910-A2-GN32-40Appendix C provides EIA-232-D and VF TELCO pin assignments.Appendix D provides V.25bis dia

COMSPHERE 3900 Series Modems8-4 September 1998 3910-A2-GN32-40Loc Analog LoopLoc Analog Loop performs a local analog loopback (ITU-T- V.54 Loop 3), Fi

Test Branch8-53910-A2-GN32-40 September 1998The message Started appears on the LCD, and the Test LED lights for the duration of the test. IfInvalid Co

COMSPHERE 3900 Series Modems8-6 September 1998 3910-A2-GN32-40Press the key until Rem_Digital_Loop appears. Press any function key to start this t

Test Branch8-73910-A2-GN32-40 September 1998F1Test:Loc_Digital_LoopF2F3Press the key until Loc_Digital_Loop appears. Press any function key to sta

COMSPHERE 3900 Series Modems8-8 September 1998 3910-A2-GN32-40Figure 8-5. Pattern Test and Digital Loopback TestFigure 8-6. End-to-End Pattern TestTo

Test Branch8-93910-A2-GN32-40 September 1998BlksErrd=xxxxxxx displays the number of blocks of data found in error (block size is 1000 bitsper block).

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9-13910-A2-GN32-40 September 1998Sub-Network Health and Status BranchOverviewThe Sub-Network Health and Status (SubHS) function is not available on mu

COMSPHERE 3900 Series Modems9-2 September 1998 3910-A2-GN32-40Press the key until SubHS appears. Select SubHS.NOTEIf there are no modems in the mu

10-13910-A2-GN32-40 September 1998 Call Setup Branch OverviewThe Call Setup function is not available in TMp Control mode.For dial backup applicatio

1-13910-A2-GN32-40 September 1998IntroductionOverviewThe COMSPHERE 391x Series modems, a new generation of full-feature, high-speed modems,offer relia

COMSPHERE 3900 Series Modems10-2 September 1998 3910-A2-GN32-40To access the Call Setup branch from the Top-Level menu, make the following selections:

Call Setup Branch10-33910-A2-GN32-40 September 1998Once the directory location you want appears on the LCD, press the F2 or F3 key to dial thenumber

COMSPHERE 3900 Series Modems10-4 September 1998 3910-A2-GN32-40AnswerFor dial backup applications, Answer allows the modem to go off-hook, generate an

Call Setup Branch10-53910-A2-GN32-40 September 1998Dial Standby/Return to DialWhen the modem is operating in Dial Backup mode (DialBckUp), Dial Stan

COMSPHERE 3900 Series Modems10-6 September 1998 3910-A2-GN32-40To access Dial Standby or Return to Dial from the Call Setup branch, make the following

Call Setup Branch10-73910-A2-GN32-40 September 1998Press the key until Change_Directory appears. Press any function key to selectChange_Director

COMSPHERE 3900 Series Modems10-8 September 1998 3910-A2-GN32-40To save the number just entered, scroll to the next directory location by selecting Nxt

Call Setup Branch10-93910-A2-GN32-40 September 1998Directory Status (Does Not Appear in North America)Directory Status displays the status of each d

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11-13910-A2-GN32-40 September 1998Talk/Data Branch OverviewThe Talk/Data function is not available in TMp Control mode.The Talk/Data branch of the To

COMSPHERE 3900 Series Modems1-2 September 1998 3910-A2-GN32-40Multipoint ApplicationsIn multipoint applications, leased-line circuits are used for tim

COMSPHERE 3900 Series Modems11-2 September 1998 3910-A2-GN32-40Manual Dialing When the Remote Modem is Configured forAuto-AnswerNOTEOn the remote mode

Talk/Data Branch11-33910-A2-GN32-40 September 1998Manual Dialing When the Remote Modem is Configured forManual AnswerNOTEOn both modems, the Line Curr

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12-13910-A2-GN32-40 September 1998Dial Access Security OverviewNOTEThis chapter supports the operation of dial access security for theCOMSPHERE 391x

COMSPHERE 3900 Series Modems12-2 September 1998 3910-A2-GN32-40Originate Access SecurityOriginate Access lets you control who can originate a call fro

Dial Access Security12-33910-A2-GN32-40 September 1998The following examples illustrate two ways to enter a VF-side password:ATDP5551234TW12345678# or

COMSPHERE 3900 Series Modems12-4 September 1998 3910-A2-GN32-40Combination of VF-Side and DTE-Side PasswordsThe previously described methods of passwo

Dial Access Security12-53910-A2-GN32-40 September 1998Set Access CtrlSet Access Control allows you to configure critical parameters contained within t

COMSPHERE 3900 Series Modems12-6 September 1998 3910-A2-GN32-40Press the key to scroll the Set Answer Security, Set Originate Security, and Set Ad

Dial Access Security12-73910-A2-GN32-40 September 1998Select Index appears.Press the F2 (  ) key to increment index values.Press the key to move t

Chapter Title1-33910-A2-GN32-40 September 1998Standalone Model 3910 4-Wire/2-Wire ModemThe standalone Model 3910 modem (Figure 1-1) is capable of eith

COMSPHERE 3900 Series Modems12-8 September 1998 3910-A2-GN32-40Table 12-1(2 of 2)Edit Password Table Group OptionsH VF plus DTEIndicates that both lay

Dial Access Security12-93910-A2-GN32-40 September 1998Set Answer SecSet Answer Security determines if dial access security is enabled or disabled. Thi

COMSPHERE 3900 Series Modems12-10 September 1998 3910-A2-GN32-40Set Orig SecSet Originate Security controls whether or not the modem can originate a c

Dial Access Security12-113910-A2-GN32-40 September 1998Set Admin PsWdSet Administrative Password is used to change the Administrative Password value.

COMSPHERE 3900 Series Modems12-12 September 1998 3910-A2-GN32-40Reset SecurityReset Security is the second major function within the Security branch o

Dial Access Security12-133910-A2-GN32-40 September 1998Security Configuration OptionsThe Security Configuration Options group allows you to view and s

COMSPHERE 3900 Series Modems12-14 September 1998 3910-A2-GN32-40Table 12-4(2 of 3)Security Configuration OptionsDTE Password Termination Character. Al

Dial Access Security12-153910-A2-GN32-40 September 1998Table 12-4(3 of 3)Security Configuration OptionsH VF & DTEThe answering modem is enabled fo

COMSPHERE 3900 Series Modems12-16 September 1998 3910-A2-GN32-40Security Password Entry TechniquesThe previous sections described how to set up and co

Dial Access Security12-173910-A2-GN32-40 September 1998Originate Access PasswordAn Originate Access password is entered by a local user to gain access

COMSPHERE 3900 Series Modems1-4 September 1998 3910-A2-GN32-40Carrier-Mounted Model 3911 4-Wire/2-Wire ModemThe carrier-mounted Model 3911 modem (Figu

COMSPHERE 3900 Series Modems12-18 September 1998 3910-A2-GN32-40Database Table ExamplesThe following examples illustrate possible database tables in w

Dial Access Security12-193910-A2-GN32-40 September 1998Table 12-7 is an example of a security database table that uses a mixture of VF and DTEpassword

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13-13910-A2-GN32-40 September 1998Remote Branch OverviewThe Remote branch of the Top-Level menu allows you to control the remote modem’s DCPusing the

COMSPHERE 3900 Series Modems13-2 September 1998 3910-A2-GN32-40The following conditions must be met before using the Remote branch:• A connection usin

Remote Branch13-33910-A2-GN32-40 September 1998For Trellis Multipoint (TMp) control modems, you must specify the network managementaddress of a tribut

COMSPHERE 3900 Series Modems13-4 September 1998 3910-A2-GN32-40If operation over the secondary channel is desired, press any function key to select th

Remote Branch13-53910-A2-GN32-40 September 1998• If a connection is established but the wrong password is stored, the status messagePassword Invalid a

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Introduction1-53910-A2-GN32-40 September 1998The Model 3911 derives ac power from the COMSPHERE 3000 Series Carrier’s backplane, whichis a common bus

14-13910-A2-GN32-40 September 1998AT Command Set and S-Registers OverviewThe AT command set provides an alternative method to the modem’s DCP for ent

COMSPHERE 3900 Series Modems14-2 September 1998 3910-A2-GN32-40Use the O command to return to Data mode from online Command mode. Enter the followingc

AT Command Set and S-Registers14-33910-A2-GN32-40 September 1998Result CodesTable 14-1 lists all valid result codes for the 391x Series modem.Table 14

COMSPHERE 3900 Series Modems14-4 September 1998 3910-A2-GN32-40Table 14-1(2 of 2)Result CodesNumbers(1)DescriptionWordNumbers(2)28 28 CONNECT 38400**

AT Command Set and S-Registers14-53910-A2-GN32-40 September 1998Table 14-2(1 of 10)391x Series AT CommandsATCommandDescriptionDCP LCDCommandSequenceA/

COMSPHERE 3900 Series Modems14-6 September 1998 3910-A2-GN32-40Table 14-2(2 of 10)391x Series AT CommandsATCommandDCP LCDCommandSequenceDescriptionDn

AT Command Set and S-Registers14-73910-A2-GN32-40 September 1998Table 14-2(3 of 10)391x Series AT CommandsATCommandDCP LCDCommandSequenceDescriptionO

COMSPHERE 3900 Series Modems14-8 September 1998 3910-A2-GN32-40Table 14-2(4 of 10)391x Series AT CommandsATCommandDCP LCDCommandSequenceDescriptionXnE

AT Command Set and S-Registers14-93910-A2-GN32-40 September 1998Table 14-2(5 of 10)391x Series AT CommandsATCommandDCP LCDCommandSequenceDescriptionZn

COMSPHERE 3900 Series Modems14-10 September 1998 3910-A2-GN32-40Table 14-2(6 of 10)391x Series AT CommandsATCommandDCP LCDCommandSequenceDescription&a

COMSPHERE 3900 Series ModemsA September 1998 3910-A2-GN32-40COMSPHERE3900 Series ModemsModels 3910 and 3911Point-to-Point/MultipointInstallation and O

COMSPHERE 3900 Series Modems1-6 September 1998 3910-A2-GN32-407. If you experience trouble with this equipment, please contact your sales or servicere

AT Command Set and S-Registers14-113910-A2-GN32-40 September 1998Table 14-2(7 of 10)391x Series AT CommandsATCommandDCP LCDCommandSequenceDescription&

COMSPHERE 3900 Series Modems14-12 September 1998 3910-A2-GN32-40Table 14-2(8 of 10)391x Series AT CommandsATCommandDCP LCDCommandSequenceDescription&a

AT Command Set and S-Registers14-133910-A2-GN32-40 September 1998Table 14-2(9 of 10)391x Series AT CommandsATCommandDCP LCDCommandSequenceDescription\

COMSPHERE 3900 Series Modems14-14 September 1998 3910-A2-GN32-40Table 14-2(10 of 10)391x Series AT CommandsATCommandDCP LCDCommandSequenceDescription\

AT Command Set and S-Registers14-153910-A2-GN32-40 September 1998S-Register FormatS-Registers can be displayed and/or modified when the modem is in Co

COMSPHERE 3900 Series Modems14-16 September 1998 3910-A2-GN32-40Table 14-3(2 of 13)391x Series S-RegistersS-RegisterDCP LCDCommandSequenceDescriptionS

AT Command Set and S-Registers14-173910-A2-GN32-40 September 1998Table 14-3(3 of 13)391x Series S-RegistersS-RegisterDCP LCDCommandSequenceDescription

COMSPHERE 3900 Series Modems14-18 September 1998 3910-A2-GN32-40Table 14-3(4 of 13)391x Series S-RegistersS-RegisterDCP LCDCommandSequenceDescriptionS

AT Command Set and S-Registers14-193910-A2-GN32-40 September 1998Table 14-3(5 of 13)391x Series S-RegistersS-RegisterDCP LCDCommandSequenceDescription

COMSPHERE 3900 Series Modems14-20 September 1998 3910-A2-GN32-40Table 14-3(6 of 13)391x Series S-RegistersS-RegisterDCP LCDCommandSequenceDescriptionS

Introduction1-73910-A2-GN32-40 September 1998CanadaNOTICE TO THE USERS OF THE CANADIAN PUBLIC SWITCHED TELEPHONE NETWORKThe Canadian Department of Com

AT Command Set and S-Registers14-213910-A2-GN32-40 September 1998Table 14-3(7 of 13)391x Series S-RegistersS-RegisterDCP LCDCommandSequenceDescription

COMSPHERE 3900 Series Modems14-22 September 1998 3910-A2-GN32-40Table 14-3(8 of 13)391x Series S-RegistersS-RegisterDCP LCDCommandSequenceDescriptionS

AT Command Set and S-Registers14-233910-A2-GN32-40 September 1998Table 14-3(9 of 13)391x Series S-RegistersS-RegisterDCP LCDCommandSequenceDescription

COMSPHERE 3900 Series Modems14-24 September 1998 3910-A2-GN32-40Table 14-3(10 of 13)391x Series S-RegistersS-RegisterDCP LCDCommandSequenceDescription

AT Command Set and S-Registers14-253910-A2-GN32-40 September 1998Table 14-3(11 of 13)391x Series S-RegistersS-RegisterDCP LCDCommandSequenceDescriptio

COMSPHERE 3900 Series Modems14-26 September 1998 3910-A2-GN32-40Table 14-3(12 of 13)391x Series S-RegistersS-RegisterDCP LCDCommandSequenceDescription

AT Command Set and S-Registers14-273910-A2-GN32-40 September 1998Table 14-3(13 of 13)391x Series S-RegistersS-RegisterDCP LCDCommandSequenceDescriptio

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A-13910-A2-GN32-40 September 1998Menu TreeOverviewPages A-2 and A-3 provide a menu tree for the 391x Series modems.A

COMSPHERE 3900 Series ModemsA-2 September 1998 3910-A2-GN32-40Status Configure PListDeviceHSVFIdentityDTEBackupOptionsRecordMajorMinorStatusDialThresh

COMSPHERE 3900 Series Modems1-8 September 1998 3910-A2-GN32-40Technical SpecificationsTable 1-1 shows the technical specifications for the 391x Series

Menu TreeA-33910-A2-GN32-40 September 1998ControlTestSubHS Tlk/DataSecurityRemoteV42/MNP/BufferErr Contrl ModeV42bis CompressMNP5 CompressEC Negotiat

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B-13910-A2-GN32-40 September 1998TroubleshootingOverviewThis appendix points out basic problems that can occur when operating a 391x Series modem.Use

COMSPHERE 3900 Series ModemsB-2 September 1998 3910-A2-GN32-40Table B-2Leased-Line OperationSymptomActionThe modems do not train-up onleased lines.Ver

TroubleshootingB-33910-A2-GN32-40 September 1998Table B-4Modem — DTE ConnectionSymptomActionThe modem does not accept orecho back AT commands.Verify t

COMSPHERE 3900 Series ModemsB-4 September 1998 3910-A2-GN32-40Table B-5(1 of 2)Modem — VF ConnectionSymptomActionThe modem does not receive adial tone

TroubleshootingB-53910-A2-GN32-40 September 1998Table B-5(2 of 2)Modem — VF ConnectionSymptom ActionThe modem does not go off-hookand begin dialing.If

COMSPHERE 3900 Series ModemsB-6 September 1998 3910-A2-GN32-40Table B-6Online OperationSymptomActionThe data is scrambled. Verify that the character f

C-13910-A2-GN32-40 September 1998Pin AssignmentsOverviewThis appendix lists EIA-232-D and VF TELCO pin assignments and provides information aboutauxil

COMSPHERE 3900 Series ModemsC-2 September 1998 3910-A2-GN32-40EIA-232-D Pin AssignmentsTable C-1 lists the EIA-232-D pin assignments for the modem.Tab

Introduction1-93910-A2-GN32-40 September 1998Table 1-1(2 of 3)Technical Specifications for 391x Series ModemsSpecifications DescriptionENVIRONMENTOper

Pin AssignmentsC-33910-A2-GN32-40 September 1998VF Connector Pin AssignmentsTable C-2 lists the connector pin assignments for Model 3910 modular jacks

COMSPHERE 3900 Series ModemsC-4 September 1998 3910-A2-GN32-40Auxiliary Cables Not SuppliedTo add an external telephone to your modem, use an external

Pin AssignmentsC-53910-A2-GN32-40 September 1998For 2-wire leased-line connections to a JM8 network interface, use an 8-position to 6-positioncrossove

COMSPHERE 3900 Series ModemsC-6 September 1998 3910-A2-GN32-40To connect a Model 3910 port to another modem’s EIA-232-D interface, use a 25-pin crosso

D-13910-A2-GN32-40 September 1998ITU-T V.25bis Dialing Commandsand ResponsesOverviewThis appendix describes V.25bis dialing commands and responses. IT

COMSPHERE 3900 Series ModemsD-2 September 1998 3910-A2-GN32-40Call Request with Stored Memory Address Provided (CRS)The CRS command dials the telephon

ITU-T V.25bis Dialing Commands and ResponsesD-33910-A2-GN32-40 September 1998Delayed Call IndicatorThe DLC response is issued to the DTE if the modem

COMSPHERE 3900 Series ModemsD-4 September 1998 3910-A2-GN32-40Program Normal (PRN)The Program Normal (PRN) command allows the DTE to enter and store a

ITU-T V.25bis Dialing Commands and ResponsesD-53910-A2-GN32-40 September 1998List Delayed Numbers Response (LSD)LSD is a response to an LSD command is

COMSPHERE 3900 Series ModemsD-6 September 1998 3910-A2-GN32-40Invalid (INV)The INV response indicates that the modem has received an incorrect V.25bis

COMSPHERE 3900 Series Modems1-10 September 1998 3910-A2-GN32-40Table 1-1(3 of 3)Technical Specifications for 391x Series ModemsSpecifications Descript

ITU-T V.25bis Dialing Commands and ResponsesD-73910-A2-GN32-40 September 1998Table D-2 lists V.25bis response messages supported by the 391x Series mo

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E-13910-A2-GN32-40 September 1998ASCII Character TableOverviewTable E-1 in this appendix provides the ASCII character table.Table E-1(1 of 4)ASCII Cha

COMSPHERE 3900 Series ModemsE-2 September 1998 3910-A2-GN32-40Table E-1(2 of 4)ASCII CharactersHexadecimalASCII ValueKeyControlCharacterDecimalASCII V

ASCII Character TableE-33910-A2-GN32-40 September 1998Table E-1(3 of 4)ASCII CharactersHexadecimalASCII ValueKeyControlCharacterDecimalASCII Value3D 0

COMSPHERE 3900 Series ModemsE-4 September 1998 3910-A2-GN32-40Table E-1(4 of 4)ASCII CharactersHexadecimalASCII ValueKeyControlCharacterDecimalASCII V

F-13910-A2-GN32-40 September 1998Default Configuration OptionsOverviewTable F-1 lists all default configuration options for the factory preset configu

COMSPHERE 3900 Series ModemsF-2 September 1998 3910-A2-GN32-40Table F-1(1 of 7)Factory Default Configuration OptionsConfigurationOptionSync LeasedDefa

Default Configuration OptionsF-33910-A2-GN32-40 September 1998Table F-1(2 of 7)Factory Default Configuration OptionsConfigurationOptionSync DialDefaul

COMSPHERE 3900 Series ModemsF-4 September 1998 3910-A2-GN32-40Table F-1(3 of 7)Factory Default Configuration OptionsConfigurationOptionSync DialDefaul

2-13910-A2-GN32-40 September 1998Modem InstallationOverviewThis chapter provides a list of equipment supplied with the modem as well as a list of cust

Default Configuration OptionsF-53910-A2-GN32-40 September 1998Table F-1(4 of 7)Factory Default Configuration OptionsConfigurationOptionSync DialDefaul

COMSPHERE 3900 Series ModemsF-6 September 1998 3910-A2-GN32-40Table F-1(5 of 7)Factory Default Configuration OptionsConfigurationOptionSync DialDefaul

Default Configuration OptionsF-73910-A2-GN32-40 September 1998Table F-1(6 of 7)Factory Default Configuration OptionsConfigurationOptionSync DialDefaul

COMSPHERE 3900 Series ModemsF-8 September 1998 3910-A2-GN32-40Table F-1(7 of 7)Factory Default Configuration OptionsConfigurationOptionSync DialDefaul

G-13910-A2-GN32-40 September 1998Sample ConfigurationsOverviewThis appendix provides diagrams of sample configurations for the 391x Series modems. Fol

COMSPHERE 3900 Series ModemsG-2 September 1998 3910-A2-GN32-40Point-to-PointFigure G-1 shows a sample configuration for point-to-point applications.39

Sample ConfigurationsG-33910-A2-GN32-40 September 1998MultipointFigure G-2 shows a sample configuration for multipoint applications.TMp control modems

COMSPHERE 3900 Series ModemsG-4 September 1998 3910-A2-GN32-40Point-to-Point with Automatic Dial BackupFigure G-3 shows a sample configuration for poi

Sample ConfigurationsG-53910-A2-GN32-40 September 1998Point-to-Point with Network ManagementFigure G-4 shows a sample configuration for point-to-point

COMSPHERE 3900 Series ModemsG-6 September 1998 3910-A2-GN32-40Carrier with Network ManagementFigure G-5 shows a sample configuration for COMSPHERE 300

COMSPHERE 3900 Series Modems2-2 September 1998 3910-A2-GN32-40Customer-Supplied EquipmentThe following customer-supplied equipment is required to comp

Sample ConfigurationsG-73910-A2-GN32-40 September 1998Extended MultipointFigure G-6 shows a sample configuration for extended multipoint applications.

COMSPHERE 3900 Series ModemsG-8 September 1998 3910-A2-GN32-40Configuration Options3920 A Use Sync Leased (Answer) default configuration options with

Sample ConfigurationsG-93910-A2-GN32-40 September 1998Extended DiagnosticsFigure G-7 shows a sample configuration for extended diagnostics.Figure G-7.

COMSPHERE 3900 Series ModemsG-10 September 1998 3910-A2-GN32-403910D,F,HUse Sync Leased (Answer) default configuration options with the followingexcep

H-13910-A2-GN32-40 September 1998Equipment ListEquipment Feature/Part NumberModel 3910 3910-A1-40XModel 3911 3911-B1-00X6-position, 4-wire modular cor

COMSPHERE 3900 Series ModemsH-2 September 1998 3910-A2-GN32-40This page intentionally left blank.

Glossary-13910-A2-GN32-40 September 1998GlossaryA configuration area containing configuration options currently in use by the modem. When apower cycle

COMSPHERE 3900 Series ModemsGlossary-2 September 1998 3910-A2-GN32-40A unit of signaling speed that is equal to the number of symbols per second. This

GlossaryGlossary-33910-A2-GN32-40 September 1998The modem transmits a carrier signal constantly, regardless of RTS.The diagnostic interface between a

COMSPHERE 3900 Series ModemsGlossary-4 September 1998 3910-A2-GN32-40A process that transfers device firmware and software from a locally-attached PC

Modem Installation2-33910-A2-GN32-40 September 1998Connecting Cables to the Model 3910 ModemsFigure 2-1 shows how Model 3910 modems are connected to c

GlossaryGlossary-53910-A2-GN32-40 September 1998A shared boundary between functional units.International Telecommunications Union. The telecommunicati

COMSPHERE 3900 Series ModemsGlossary-6 September 1998 3910-A2-GN32-40Network Interface Module. The interface provided for the public switched telephon

GlossaryGlossary-73910-A2-GN32-40 September 1998A function available when in Dial Backup mode that allows the modem to switch to dial-lineoperation wh

COMSPHERE 3900 Series ModemsGlossary-8 September 1998 3910-A2-GN32-40An ITU-T standard for modems operating full-duplex with asynchronous or synchrono

Index-13910-A2-GN32-40 September 1998IndexAAbort (test), 8-2–8-10ac power requirements, 1-9Access from Remote, 5-49Active (Operating) configurations,

COMSPHERE 3900 Series ModemsIndex-2 September 1998 3910-A2-GN32-40Ddata compression, 5-40MNP5, 5-40V.42bis, 5-40data ratedial line, 5-30forced to VF r

IndexIndex-33910-A2-GN32-40 September 1998IIdentity, 4-6indicatorsdefinitions, 3-6status (LEDs), 3-3–3-5installationModel 3910, 2-2–2-12Model 3911, 2

COMSPHERE 3900 Series ModemsIndex-4 September 1998 3910-A2-GN32-40Ppart numbers, 4-6, H-1passwordsadministrative, 12-5–12-6remote access, 5-5–5-8, 5-4

IndexIndex-53910-A2-GN32-40 September 1998Test branch, 8-1–8-2in menu structure, 3-8Test configuration options group, 5-46–5-47TMP default configurat

COMSPHERE 3900 Series Modems2-4 September 1998 3910-A2-GN32-40DTE ConnectionUse the following procedures to connect the EIA-232-D cable from the modem

Modem Installation2-53910-A2-GN32-40 September 1998Network Management System ConnectionFor the Model 3910, use the following procedures to connect the

Safety InstructionsB3910-A2-GN32-40 September 1998Important Safety Instructions1. Read and follow all warning notices and instructions marked on the p

COMSPHERE 3900 Series Modems2-6 September 1998 3910-A2-GN32-40Selecting Factory Configuration OptionsAfter the modem passes the power-up self-test, co

Modem Installation2-73910-A2-GN32-40 September 19986. Press the key until the appropriate configuration area appears on the LCD, then pressthe cor

COMSPHERE 3900 Series Modems2-8 September 1998 3910-A2-GN32-40To change a factory template using AT commands, perform the following steps. For moreinf

Modem Installation2-93910-A2-GN32-40 September 1998Removing and Replacing Model 3910 ModemsTo remove and replace a Model 3910 modem, perform the follo

COMSPHERE 3900 Series Modems2-10 September 1998 3910-A2-GN32-40Figure 2-2. Installing a Model 3911 Modem2. At the front of the carrier, hold the modem

Modem Installation2-113910-A2-GN32-40 September 19985. Press the Select key to place the SDCP in direct communication with the selectedmodem.The LCD

COMSPHERE 3900 Series Modems2-12 September 1998 3910-A2-GN32-40Removing and Replacing Model 3911 ModemsCAUTIONIf the Model 3911 is removed from the ca

3-13910-A2-GN32-40 September 1998DCP OperationOverviewThis chapter describes how to use the diagnostic control panel (DCP) of the 391x Series modem. I

COMSPHERE 3900 Series Modems3-2 September 1998 3910-A2-GN32-40Model 3910 Diagnostic Control PanelThe diagnostic control panel (DCP) of the Model 3910

DCP Operation3-33910-A2-GN32-40 September 1998Status IndicatorsThe 391x Series modems’ status indicators continuously provide information on the modem

COMSPHERE 3900 Series ModemsC September 1998 3910-A2-GN32-40Notices                

COMSPHERE 3900 Series Modems3-4 September 1998 3910-A2-GN32-40The standalone Model 3910 modem’s DCP has 13 light-emitting diodes (LEDs), and thecarrie

DCP Operation3-53910-A2-GN32-40 September 1998The SDCP LEDs are listed and described in Table 3-2.Table 3-2SDCP LEDsLabelColor IndicatesOK green Power

COMSPHERE 3900 Series Modems3-6 September 1998 3910-A2-GN32-40LCD DisplayThe LCD consists of a top line and bottom line, with each displaying a maximu

DCP Operation3-73910-A2-GN32-40 September 1998KeypadThe DCP on the Model 3910 has seven keys while the optional SDCP of the COMSPHERE 3000 Series Carr

COMSPHERE 3900 Series Modems3-8 September 1998 3910-A2-GN32-40Menu StructureThe menu tree is a hierarchical structure used to display functions that c

DCP Operation3-93910-A2-GN32-40 September 1998Table 3-3(1 of 3)Top-Level Menu StatusStatusMessage IndicatesNormalOperationLeased:MR*The modem is opera

COMSPHERE 3900 Series Modems3-10 September 1998 3910-A2-GN32-40Table 3-3(2 of 3)Top-Level Menu StatusStatus IndicatesMessageCall FailureBusy Signal Th

DCP Operation3-113910-A2-GN32-40 September 1998Table 3-3(3 of 3)Top-Level Menu StatusStatus IndicatesMessageCall Disconnect ATH Disconnect The modem h

COMSPHERE 3900 Series Modems3-12 September 1998 3910-A2-GN32-40Messages listed in Table 3-4 are common operational messages that occur during modemope

DCP Operation3-133910-A2-GN32-40 September 1998The Top-Level menu’s main branches appear on the LCD in the order of Status, Configure, PList,Control,

i3910-A2-GN32-40 September 1998Table of ContentsPrefaceObjectives and Reader Assumptions ix. . . . . . . . . . . . . . . . . . . . . . . . . How to Us

COMSPHERE 3900 Series Modems3-14 September 1998 3910-A2-GN32-40The modem’s Quick Configuration information appears on the LCD’s bottom line.a Displays

4-13910-A2-GN32-40 September 1998Status BranchOverviewThe Status branch of the Top-Level menu allows you to view the current status of the leased-line

COMSPHERE 3900 Series Modems4-2 September 1998 3910-A2-GN32-40To access Status from the Top-Level menu, select Status.F1Leased:19.2Status ConfigureF2F

Status Branch4-33910-A2-GN32-40 September 1998Table 4-1(1 of 2)Health and Status MessagesTypeMessage IndicatesMajorDevice Failure A device/self test h

COMSPHERE 3900 Series Modems4-4 September 1998 3910-A2-GN32-40Table 4-1(2 of 2)Health and Status MessagesType IndicatesMessageDial Make Busy Mode The

Status Branch4-53910-A2-GN32-40 September 1998VFVF displays the condition of the leased or dial connection.To access VF from the Status branch, make t

COMSPHERE 3900 Series Modems4-6 September 1998 3910-A2-GN32-40NonLnearDist Non-Linear Distortion displays distortion which is usually associated withp

Status Branch4-73910-A2-GN32-40 September 1998DTEDTE displays the state and/or activity of the following interface leads: LSD, DTR, DSR, Tst,TXD, RXD,

COMSPHERE 3900 Series Modems4-8 September 1998 3910-A2-GN32-40To access Backup from the Status branch, make the following selection:Press the key u

Status Branch4-93910-A2-GN32-40 September 1998Table 4-2Backup Status Screens Active Line1st Screen DisplayInactive Line2nd Screen DisplayPossible Inac

COMSPHERE 3900 Series Modemsii September 1998 3910-A2-GN32-403. DCP OperationOverview 3-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

COMSPHERE 3900 Series Modems4-10 September 1998 3910-A2-GN32-40OptionsThe Options Status function displays all optional firmware features currently in

Status Branch4-113910-A2-GN32-40 September 1998Press the key until Record appears. Select Record.F1Record StatusDisplay ClearF2F3To display sequ

COMSPHERE 3900 Series Modems4-12 September 1998 3910-A2-GN32-40This page intentionally left blank.

5-13910-A2-GN32-40 September 1998 DCP ConfigurationOverviewAfter installing a 391x Series modem, its software configuration options must be set using

COMSPHERE 3900 Series Modems5-2 September 1998 3910-A2-GN32-40Figures 5-1 and 5-2 graphically display the interaction between the edit area and config

DCP Configuration5-33910-A2-GN32-40 September 1998Active (Saved)(ATZ0, ATZ3)Customer1(ATZ1)Customer2(ATZ2)FactoryUSE AT&W COMMAND TO SAVECHANGES T

COMSPHERE 3900 Series Modems5-4 September 1998 3910-A2-GN32-40Configure BranchThe Configure branch of the Top-Level menu contains all of the modem’s c

DCP Configuration5-53910-A2-GN32-40 September 1998The Configure branch consists of the following three levels:• Ld EditArea frm. Allows the selection

COMSPHERE 3900 Series Modems5-6 September 1998 3910-A2-GN32-40F1Ld Fact Preset: >Sync_LeasedF2F3Select Sync_Leased.F1Choose Mode:Answer OriginateF2

DCP Configuration5-73910-A2-GN32-40 September 1998F1StrapsWhenDisc >Nxt No_ChangeF2F3F1RemAccssPasswrd:Nxt 00000000F2F3Select Nxt until RemAccss

Table of Contentsiii3910-A2-GN32-40 September 199810. Call Setup BranchOverview 10-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

COMSPHERE 3900 Series Modems5-8 September 1998 3910-A2-GN32-40To save the new password to a configuration area, make the following selections:F1RemAcc

DCP Configuration5-93910-A2-GN32-40 September 1998Configuration TablesThe modem’s configuration options are arranged into nine groups based on functio

COMSPHERE 3900 Series Modems5-10 September 1998 3910-A2-GN32-40Table 5-1(1 of 10)DTE Interface Configuration OptionsAsync/Sync Mode: SyncNxt Sync

DCP Configuration5-113910-A2-GN32-40 September 1998Table 5-1(2 of 10)DTE Interface Configuration OptionsAsyn Parity Bit: NoneNxt None Even Odd

COMSPHERE 3900 Series Modems5-12 September 1998 3910-A2-GN32-40Table 5-1(3 of 10)DTE Interface Configuration OptionsDTR Action: IgnoreNxt Ignore

DCP Configuration5-133910-A2-GN32-40 September 1998Table 5-1(4 of 10)DTE Interface Configuration OptionsDSR Control: Stndrd_RS232Nxt Stndrd_RS232

COMSPHERE 3900 Series Modems5-14 September 1998 3910-A2-GN32-40Table 5-1(5 of 10)DTE Interface Configuration OptionsRTS Action: Stndrd_RS232Nxt Stn

DCP Configuration5-153910-A2-GN32-40 September 1998Table 5-1(6 of 10)DTE Interface Configuration OptionsCTS Control: Stndrd_RS232Nxt Stndrd_RS232

COMSPHERE 3900 Series Modems5-16 September 1998 3910-A2-GN32-40Table 5-1(7 of 10)DTE Interface Configuration OptionsLSD Control: Stndrd_RS232Nxt St

DCP Configuration5-173910-A2-GN32-40 September 1998Table 5-1(8 of 10)DTE Interface Configuration OptionsTX Clock Source: InternalNxt Internal Ext

COMSPHERE 3900 Series Modemsiv September 1998 3910-A2-GN32-40AppendicesA. Menu Tree A-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

COMSPHERE 3900 Series Modems5-18 September 1998 3910-A2-GN32-40Table 5-1(9 of 10)DTE Interface Configuration OptionsCT111_Rate Cntl: DisableNxt Dis

DCP Configuration5-193910-A2-GN32-40 September 1998Table 5-1(10 of 10)DTE Interface Configuration OptionsExtend Main Ch.: DisableNxt Disable Enab

COMSPHERE 3900 Series Modems5-20 September 1998 3910-A2-GN32-40Table 5-2(1 of 5)DTE Dialer Configuration OptionsDTE Dialer Type: DisableNxt Disable

DCP Configuration5-213910-A2-GN32-40 September 1998Table 5-2(2 of 5)DTE Dialer Configuration OptionsAT Escape Char: 043 ASCINxt  043 ASCIThis co

COMSPHERE 3900 Series Modems5-22 September 1998 3910-A2-GN32-40Table 5-2(3 of 5)DTE Dialer Configuration OptionsCarriageRtn Char: 013 ASCINxt  0

DCP Configuration5-233910-A2-GN32-40 September 1998Table 5-2(4 of 5)DTE Dialer Configuration OptionsExtendResltCode: EnableNxt Enable Disable A

COMSPHERE 3900 Series Modems5-24 September 1998 3910-A2-GN32-40Table 5-2(5 of 5)DTE Dialer Configuration OptionsAT Cmnd Mode: NormalNxt Normal No

DCP Configuration5-253910-A2-GN32-40 September 1998Line DialerThe Line Dialer configuration options establish parameters used by the modem to answer o

COMSPHERE 3900 Series Modems5-26 September 1998 3910-A2-GN32-40Table 5-3(2 of 5)Line Dialer Configuration OptionsBlind Dial Pause: 2secNxt 2sec 4

DCP Configuration5-273910-A2-GN32-40 September 1998Table 5-3(3 of 5)Line Dialer Configuration OptionsFast Disconnect: DisableNxt Disable EnableFa

Table of Contentsv3910-A2-GN32-40 September 1998List of FiguresFigure Page1-1 Model 3910 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

COMSPHERE 3900 Series Modems5-28 September 1998 3910-A2-GN32-40Table 5-3(4 of 5)Line Dialer Configuration OptionsNo Carrier Disc: 2secNxt 2sec Di

DCP Configuration5-293910-A2-GN32-40 September 1998Table 5-3(5 of 5)Line Dialer Configuration OptionsMakeBusyVia DTR: DisableEnd Disable EnableMa

COMSPHERE 3900 Series Modems5-30 September 1998 3910-A2-GN32-40Dial LineThe Dial Line configuration options are used to configure the modem for operat

DCP Configuration5-313910-A2-GN32-40 September 1998Table 5-4(2 of 3)Dial Line Configuration OptionsV32bis Automode: EnableNxt Enable Disable Sy

COMSPHERE 3900 Series Modems5-32 September 1998 3910-A2-GN32-40Table 5-4(3 of 3)Dial Line Configuration OptionsV22b Guard Tone: DisableNxt Disable

DCP Configuration5-333910-A2-GN32-40 September 1998Leased LineThe Leased Line configuration options only appear when the Sync Leased factory preset te

COMSPHERE 3900 Series Modems5-34 September 1998 3910-A2-GN32-40Table 5-5(2 of 6)Leased Line Configuration OptionsLeasedLine Rate: 19200(V32t)Nxt 19

DCP Configuration5-353910-A2-GN32-40 September 1998Table 5-5(3 of 6)Leased Line Configuration OptionsV32bis Autorate: EnableNxt Enable DisableThi

COMSPHERE 3900 Series Modems5-36 September 1998 3910-A2-GN32-40Table 5-5(4 of 6)Leased Line Configuration OptionsAutoDialStandby: DisableNxt Disabl

DCP Configuration5-373910-A2-GN32-40 September 1998Table 5-5(5 of 6)Leased Line Configuration OptionsV27bis Train: ShortNxt Short LongThis config