Paradyne 3920PLUS Instrukcja Użytkownika

COMSPHERE392xPLUS MODEMSMODELS 3920PLUS AND3921PLUSINSTALLATION AND OPERATIONMANUALDocument No. 3920-A2-GN31-30November 1996

vii3920-A2-GN31-30 November 1996PrefaceObjectives and Reader AssumptionsThis manual describes how to install and operate the COMSPHEREr Model 3920Plus

DCP Operation3-633920-A2-GN31-30 November 1996F1Pick Test Port >Port1 Port2F2F3Select the appropriate port by pressing the corresponding F key. Pre

COMSPHERE 392xPlus Modems3-64 November 1996 3920-A2-GN31-30Sub-Network Health and Status BranchThe Sub-Network Health and Status (SubHS) function is n

DCP Operation3-653920-A2-GN31-30 November 1996When you select SubHS,xxxDisplays the network management address of the downstream modem selected.yyyyyy

COMSPHERE 392xPlus Modems3-66 November 1996 3920-A2-GN31-30To access the Call Setup branch from the Top-Level menu, make the following selections:F1Le

DCP Operation3-673920-A2-GN31-30 November 1996F1DialDirectory:01Off HookF2F3The Call Setup status Off Hook appears during the connection process.If th

COMSPHERE 392xPlus Modems3-68 November 1996 3920-A2-GN31-30AnswerFor dial backup applications, Answer allows the modem to go off-hook, generate an ans

DCP Operation3-693920-A2-GN31-30 November 1996Under normal backup conditions, when a problem occurs on the primary leased line, the modemsestablish a

COMSPHERE 392xPlus Modems3-70 November 1996 3920-A2-GN31-30Change DirectoryChange Directory allows you to enter or modify telephone numbers. The modem

DCP Operation3-713920-A2-GN31-30 November 1996Entering Telephone Numbers and Dial Command Modifiers into Directory LocationsThe following example uses

COMSPHERE 392xPlus Modems3-72 November 1996 3920-A2-GN31-30Table 3-9Valid Dial Command ModifiersDial command modifiers are parameters entered in the d

COMSPHERE 392xPlus Modemsviii November 1996 3920-A2-GN31-30Related Documents3000-A2-GA31 COMSPHERE 3000 Series Carrier, Installation Manual3610-A2-GZ4

DCP Operation3-733920-A2-GN31-30 November 1996F1Number StatusNxt 01:AllowedF2F3Select Nxt to display other directory locations.The status of a direc

COMSPHERE 392xPlus Modems3-74 November 1996 3920-A2-GN31-30The following sections describe the uses of the Talk/Data function.Manual Dialing When the

DCP Operation3-753920-A2-GN31-30 November 1996Manual Dialing When the Remote Modem is Configured for Manual AnswerNOTEOn both modems, the Line Current

COMSPHERE 392xPlus Modems3-76 November 1996 3920-A2-GN31-30Remote BranchThe Remote branch of the Top-Level menu allows you to control the remote modem

DCP Operation3-773920-A2-GN31-30 November 1996Remote DCP access is accomplished using either the primary or secondary channel (if available)of the VF

COMSPHERE 392xPlus Modems3-78 November 1996 3920-A2-GN31-30For Trellis Multipoint (TMp) modems (control or tributary), you must specify the remote acc

DCP Operation3-793920-A2-GN31-30 November 1996F1Leased:28.8Control ExitRemF2F3If the remote modem accepts the password and the entry is successful, th

DCP Operation3-813920-A2-GN31-30 November 1996Diagnostic Control Panel AccessNOTEThis page of the manual is self supporting and can be removed topreve

4-13920-A2-GN31-30 November 1996DCP ConfigurationOverview 4-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

COMSPHERE 392xPlus Modems4-2 November 1996 3920-A2-GN31-30• Factory is a read-only (unchangeable) configuration area containing six sets of predefined

1-13920-A2-GN31-30 November 1996IntroductionOverview 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

DCP Configuration4-33920-A2-GN31-30 November 1996Configure BranchThe Configure branch of the Top-Level menu contains all of the modem’s configuration

COMSPHERE 392xPlus Modems4-4 November 1996 3920-A2-GN31-30The Configure branch consists of the following three levels:•Ld EditArea frm. Allows the sel

DCP Configuration4-53920-A2-GN31-30 November 1996F1Ld Fact Preset: >Sync_LeasedF2F3Select Sync_Leased.F1Choose Mode:Answer OriginateF2F3Select Answ

COMSPHERE 392xPlus Modems4-6 November 1996 3920-A2-GN31-30F1StrapsWhenDisc >Nxt No_ChangeF2F3F1RemAccssPasswrd:Nxt 00000000F2F3Select Nxt until

DCP Configuration4-73920-A2-GN31-30 November 1996To save the new password to a configuration area, make the following selections:F1RemAccssPasswrd:Nxt

COMSPHERE 392xPlus Modems4-8 November 1996 3920-A2-GN31-30Configuration TablesEach modem operates in either the Multiport or Singleport mode depending

DCP Configuration4-93920-A2-GN31-30 November 1996DTEInterfaceDTEDialerLineDialerAutoAnswerRing#Dialer TypeDialTone DetectBlind Dial PausBusyTone Detec

COMSPHERE 392xPlus Modems4-10 November 1996 3920-A2-GN31-30DTE Interface — Multiport Mode lThe DTE Interface configuration options contain EIA-232-D (

DCP Configuration4-113920-A2-GN31-30 November 1996Table 4-1(2 of 9)DTE Interface Configuration Options — Multiport Mode lBakup_TXClk_Src: InternalNxt

COMSPHERE 392xPlus Modems4-12 November 1996 3920-A2-GN31-30Table 4-1(3 of 9)DTE Interface Configuration Options — Multiport Mode lPort Rate Sub-Group

COMSPHERE 392xPlus Modems1-2 November 1996 3920-A2-GN31-30COMSPHERE 392xPlus ModelsThe COMSPHERE 392xPlus modem is available in the following four mod

DCP Configuration4-133920-A2-GN31-30 November 1996Table 4-1(4 of 9)DTE Interface Configuration Options — Multiport Mode lRate at 7200Nxt Disable 7

COMSPHERE 392xPlus Modems4-14 November 1996 3920-A2-GN31-30Table 4-1(5 of 9)DTE Interface Configuration Options — Multiport Mode lAsync OverSpeed: 1.

DCP Configuration4-153920-A2-GN31-30 November 1996Table 4-1(6 of 9)DTE Interface Configuration Options — Multiport Mode lRTS Action: Stndrd_RS232Nxt

COMSPHERE 392xPlus Modems4-16 November 1996 3920-A2-GN31-30Table 4-1(7 of 9)DTE Interface Configuration Options — Multiport Mode lRTS/CTS Delay: 0mse

DCP Configuration4-173920-A2-GN31-30 November 1996Table 4-1(8 of 9)DTE Interface Configuration Options — Multiport Mode lCT111 Control: DisableNxt D

COMSPHERE 392xPlus Modems4-18 November 1996 3920-A2-GN31-30Table 4-1(9 of 9)DTE Interface Configuration Options — Multiport Mode lExtend Main Ch.: Di

DCP Configuration4-193920-A2-GN31-30 November 1996Line Dialer — Multiport Mode lThe Line Dialer configuration options establish parameters used by the

COMSPHERE 392xPlus Modems4-20 November 1996 3920-A2-GN31-30Table 4-2(2 of 3)Line Dialer Configuration Options — Multiport Mode l “,” Pause Time: 2sec

DCP Configuration4-213920-A2-GN31-30 November 1996Table 4-2(3 of 3)Line Dialer Configuration Options — Multiport Mode lNo Carrier Disc: 2secNxt 2se

COMSPHERE 392xPlus Modems4-22 November 1996 3920-A2-GN31-30Dial Line — Multiport Mode lThe Dial Line configuration options are used to configure the m

Introduction1-33920-A2-GN31-30 November 1996DIAGNOSTICCONTROLPANELLCD ANDKEYPADSTATUSINDICATORSSPEAKERPOWERSUPPLYPOWERCORD496-14684-01LEASEDModel 3920

DCP Configuration4-233920-A2-GN31-30 November 1996Table 4-3(2 of 2)Dial Line Configuration Options — Multiport Mode lDial Tx Level: Permissv(–9)Nxt

COMSPHERE 392xPlus Modems4-24 November 1996 3920-A2-GN31-30Leased Line — Multiport Mode lThe Leased Line configuration options only appear when the Sy

DCP Configuration4-253920-A2-GN31-30 November 1996Table 4-4(2 of 3)Leased Line Configuration Options — Multiport Mode lV32bis Override: DisableNxt

COMSPHERE 392xPlus Modems4-26 November 1996 3920-A2-GN31-30Table 4-4(3 of 3)Leased Line Configuration Options — Multiport Mode lSpecialStandby: Disab

DCP Configuration4-273920-A2-GN31-30 November 1996Test — Multiport lThe Test configuration option determines the duration of a test.Table 4-5 shows th

COMSPHERE 392xPlus Modems4-28 November 1996 3920-A2-GN31-30Misc — Multiport lThe Miscellaneous configuration options determine specifics for various f

DCP Configuration4-293920-A2-GN31-30 November 1996Table 4-6(2 of 3)Miscellaneous Configuration Options — Multiport Mode lDir#1_Callback: DisableNxt

COMSPHERE 392xPlus Modems4-30 November 1996 3920-A2-GN31-30Table 4-6(3 of 3)Miscellaneous Configuration Options — Multiport Mode lDiag Connection: Mo

DCP Configuration4-313920-A2-GN31-30 November 1996Singleport Mode AIn Singleport mode, the modem’s configuration options are arranged into nine groups

COMSPHERE 392xPlus Modems4-32 November 1996 3920-A2-GN31-30DTEInterfaceAsync/Sync ModeAsync DTE RateAsyn #Data BitsAsyn Parity BitAsyn #Stop BitsDTR A

COMSPHERE 392xPlus Modems1-4 November 1996 3920-A2-GN31-30 Model 3921Plus Carrier-Mounted Singleport ModemThe Model 3921Plus is a carrier-mounted sing

DCP Configuration4-333920-A2-GN31-30 November 1996DTE Interface — Singleport Mode AThe DTE Interface configuration options contain EIA-232-D (CCITT V.

COMSPHERE 392xPlus Modems4-34 November 1996 3920-A2-GN31-30Table 4-7(2 of 8)DTE Interface Configuration Options — Singleport Mode AAsyn #Data Bits: 8

DCP Configuration4-353920-A2-GN31-30 November 1996Table 4-7(3 of 8)DTE Interface Configuration Options — Singleport Mode ADTR Action: IgnoreNxt Ign

COMSPHERE 392xPlus Modems4-36 November 1996 3920-A2-GN31-30Table 4-7(4 of 8)DTE Interface Configuration Options — Singleport Mode ADSR Control: Stndr

DCP Configuration4-373920-A2-GN31-30 November 1996Table 4-7(5 of 8)DTE Interface Configuration Options — Singleport Mode ACTS Control: Stndrd_RS232Nx

COMSPHERE 392xPlus Modems4-38 November 1996 3920-A2-GN31-30Table 4-7(6 of 8)DTE Interface Configuration Options — Singleport Mode ALSD Control: Stndr

DCP Configuration4-393920-A2-GN31-30 November 1996Table 4-7(7 of 8)DTE Interface Configuration Options — Singleport Mode ABakup_TXClk_Src: InternalNx

COMSPHERE 392xPlus Modems4-40 November 1996 3920-A2-GN31-30Table 4-7(8 of 8)DTE Interface Configuration Options — Singleport Mode AExtend Main Ch.: D

DCP Configuration4-413920-A2-GN31-30 November 1996DTE Dialer — Singleport Mode AThe DTE Dialer configuration options establish the DTE-to-modem protoc

COMSPHERE 392xPlus Modems4-42 November 1996 3920-A2-GN31-30Table 4-8(2 of 5)DTE Dialer Configuration Options — Singleport Mode AAT Escape Char: 043 A

Introduction1-53920-A2-GN31-30 November 1996FACEPLATE496-14178a-04EIA232/V.24EDGE CARDCONNECTORFUTURE USEBACKCONNECTORPLATEV.35 (3600/3500)RS366A/V.

DCP Configuration4-433920-A2-GN31-30 November 1996Table 4-8(3 of 5)DTE Dialer Configuration Options — Singleport Mode ALinefeed Char: 010 ASCINxt 

COMSPHERE 392xPlus Modems4-44 November 1996 3920-A2-GN31-30Table 4-8(4 of 5)DTE Dialer Configuration Options — Singleport Mode AResultCode Form: Word

DCP Configuration4-453920-A2-GN31-30 November 1996Table 4-8(5 of 5)DTE Dialer Configuration Options — Singleport Mode AV25bis IdleFill: MarkNxt Mar

COMSPHERE 392xPlus Modems4-46 November 1996 3920-A2-GN31-30Line Dialer — Singleport Mode AThe Line Dialer configuration options establish parameters u

DCP Configuration4-473920-A2-GN31-30 November 1996Table 4-9(2 of 4)Line Dialer Configuration Options — Singleport Mode ABusyTone Detect: EnableNxt

COMSPHERE 392xPlus Modems4-48 November 1996 3920-A2-GN31-30Table 4-9(3 of 4)Line Dialer Configuration Options — Singleport Mode ALong Space Disc: Ena

DCP Configuration4-493920-A2-GN31-30 November 1996Table 4-9(4 of 4)Line Dialer Configuration Options — Singleport Mode AAuto Make Busy: DisableNxt

COMSPHERE 392xPlus Modems4-50 November 1996 3920-A2-GN31-30Dial Line — Singleport Mode AThe Dial Line configuration options are used to configure the

DCP Configuration4-513920-A2-GN31-30 November 1996Table 4-10(2 of 3)Dial Line Configuration Options — Singleport Mode AAutomode: EnableNxt Enable

COMSPHERE 392xPlus Modems4-52 November 1996 3920-A2-GN31-30Table 4-10(3 of 3)Dial Line Configuration Options — Singleport Mode AV22b Guard Tone: Disa

COMSPHERE 392xPlus Modems1-6 November 1996 3920-A2-GN31-3049614423a-03FACEPLATEEDGE CARDCONNECTORSPORT 3PORT 4PORT 1PORT 23921PlusTXDRXDRTSCTSDSRDTRLS

DCP Configuration4-533920-A2-GN31-30 November 1996Leased Line — Singleport Mode AThe Leased Line configuration options only appear when the Sync Lease

COMSPHERE 392xPlus Modems4-54 November 1996 3920-A2-GN31-30Table 4-11(2 of 5)Leased Line Configuration Options— Singleport Mode ALeasedLine Rate: 288

DCP Configuration4-553920-A2-GN31-30 November 1996Table 4-11(3 of 5)Leased Line Configuration Options— Singleport Mode ALeased Tx Level: 0Nxt 0 –

COMSPHERE 392xPlus Modems4-56 November 1996 3920-A2-GN31-30Table 4-11(4 of 5)Leased Line Configuration Options— Singleport Mode ASpecialStandby: Disa

DCP Configuration4-573920-A2-GN31-30 November 1996Table 4-11(5 of 5)Leased Line Configuration Options— Singleport Mode AV29 Link Config: PointToPoint

COMSPHERE 392xPlus Modems4-58 November 1996 3920-A2-GN31-30V.42/MNP/Buffer — Singleport Mode AV.42/MNP/Buffer configuration options determine the type

DCP Configuration4-593920-A2-GN31-30 November 1996Table 4-12(2 of 6)V.42/MNP/Buffer Configuration Options — Singleport Mode AErr Contrl Mode: V.42/MNP

COMSPHERE 392xPlus Modems4-60 November 1996 3920-A2-GN31-30Table 4-12(3 of 6)V.42/MNP/Buffer Configuration Options — Singleport Mode AEC Fallbck Char:

DCP Configuration4-613920-A2-GN31-30 November 1996Table 4-12(4 of 6)V.42/MNP/Buffer Configuration Options — Singleport Mode AXON/XOFF Psthru: Disable

COMSPHERE 392xPlus Modems4-62 November 1996 3920-A2-GN31-30Table 4-12(5 of 6)V.42/MNP/Buffer Configuration Options — Singleport Mode ASend Break Cntl:

Introduction1-73920-A2-GN31-30 November 1996392xPlus Operational ModesThe 392xPlus operational modes determine how your modem performs in various appl

DCP Configuration4-633920-A2-GN31-30 November 1996Table 4-12(6 of 6)V.42/MNP/Buffer Configuration Options — Singleport Mode ACellularEnhance: Disable

COMSPHERE 392xPlus Modems4-64 November 1996 3920-A2-GN31-30Test — Singleport Mode AThe Test configuration options determine specifics, such as the dur

DCP Configuration4-653920-A2-GN31-30 November 1996Table 4-13(2 of 2)Test Configuration Options — Singleport Mode AV54 Address: DisableNxt Disable

COMSPHERE 392xPlus Modems4-66 November 1996 3920-A2-GN31-30Misc — Singleport Mode AThe Miscellaneous configuration options determine specifics for var

DCP Configuration4-673920-A2-GN31-30 November 1996Table 4-14(2 of 3)Miscellaneous Configuration Options — Singleport Mode AAccess frm Remt: EnableNxt

COMSPHERE 392xPlus Modems4-68 November 1996 3920-A2-GN31-30Table 4-14(3 of 3)Miscellaneous Configuration Options — Singleport Mode ANetworkPosition:

5-13920-A2-GN31-30 November 1996AT Command Set and S-RegistersOverview 5-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

COMSPHERE 392xPlus Modems5-2 November 1996 3920-A2-GN31-30Escape Sequence and Escape Guard TimeThe escape sequence is only issued when the modem is on

AT Command Set and S-Registers5-33920-A2-GN31-30 November 1996Result CodesTable 5-1 lists all valid result codes for the 392xPlus modems.Table 5-1(1 o

COMSPHERE 392xPlus Modems5-4 November 1996 3920-A2-GN31-30Table 5-1(2 of 2)Result CodesNumbers(1)DescriptionWordNumbers(2)22 12 CONNECT 9600/ EC**** C

COMSPHERE 392xPlus Modems1-8 November 1996 3920-A2-GN31-30• Network management system (NMS) support through the COMSPHERE 6800 or6700 Series NMS using

AT Command Set and S-Registers5-53920-A2-GN31-30 November 1996AT Command ListAT commands are issued from an asynchronous DTE, such as a PC, and contro

COMSPHERE 392xPlus Modems5-6 November 1996 3920-A2-GN31-30Table 5-2(1 of 9)392xPlus AT CommandsATCommandDescriptionDCP LCDCommandSequenceA/ Repeat Las

AT Command Set and S-Registers5-73920-A2-GN31-30 November 1996Table 5-2(2 of 9)392xPlus AT CommandsATCommandDCP LCDCommandSequenceDescriptionDS=nDial

COMSPHERE 392xPlus Modems5-8 November 1996 3920-A2-GN31-30Table 5-2(3 of 9)392xPlus AT CommandsATCommandDCP LCDCommandSequenceDescriptionXnExtended Re

AT Command Set and S-Registers5-93920-A2-GN31-30 November 1996Table 5-2(4 of 9)392xPlus AT CommandsATCommandDCP LCDCommandSequenceDescription&CnLS

COMSPHERE 392xPlus Modems5-10 November 1996 3920-A2-GN31-30Table 5-2(5 of 9)392xPlus AT CommandsATCommandDCP LCDCommandSequenceDescription&GnV.22b

AT Command Set and S-Registers5-113920-A2-GN31-30 November 1996Table 5-2(6 of 9)392xPlus AT CommandsATCommandDCP LCDCommandSequenceDescription&Mn

COMSPHERE 392xPlus Modems5-12 November 1996 3920-A2-GN31-30Table 5-2(7 of 9)392xPlus AT CommandsATCommandDCP LCDCommandSequenceDescription&TnTests

AT Command Set and S-Registers5-133920-A2-GN31-30 November 1996Table 5-2(8 of 9)392xPlus AT CommandsATCommandDCP LCDCommandSequenceDescription&Zn=

COMSPHERE 392xPlus Modems5-14 November 1996 3920-A2-GN31-30Table 5-2(9 of 9)392xPlus AT CommandsATCommandDCP LCDCommandSequenceDescription\NnError Con

COMSPHERE 392xPlus ModemsA November 1996 3920-A2-GN31-30COMSPHERE392xPlus ModemsModels 3920Plus and 3921PlusInstallation and Operation Manual3920-A2-G

Introduction1-93920-A2-GN31-30 November 1996Dual-Leased BackupDual-Leased Backup is available in all 392xPlus modems. It enables a 2-wire leased line

AT Command Set and S-Registers5-153920-A2-GN31-30 November 1996S-Register ListS-Registers affect the operating parameters of the 392xPlus modems. S-Re

COMSPHERE 392xPlus Modems5-16 November 1996 3920-A2-GN31-30Table 5-3(1 of 12)392xPlus S-RegistersS-Register DescriptionDCP LCDCommandSequenceS0 Auto-A

AT Command Set and S-Registers5-173920-A2-GN31-30 November 1996Table 5-3(2 of 12)392xPlus S-RegistersS-RegisterDCP LCDCommandSequenceDescriptionS12 Es

COMSPHERE 392xPlus Modems5-18 November 1996 3920-A2-GN31-30Table 5-3(3 of 12)392xPlus S-RegistersS-RegisterDCP LCDCommandSequenceDescriptionS41 Dial-L

AT Command Set and S-Registers5-193920-A2-GN31-30 November 1996Table 5-3(4 of 12)392xPlus S-RegistersS-RegisterDCP LCDCommandSequenceDescriptionS44 Le

COMSPHERE 392xPlus Modems5-20 November 1996 3920-A2-GN31-30Table 5-3(5 of 12)392xPlus S-RegistersS-RegisterDCP LCDCommandSequenceDescriptionS46 Auto D

AT Command Set and S-Registers5-213920-A2-GN31-30 November 1996Table 5-3(6 of 12)392xPlus S-RegistersS-RegisterDCP LCDCommandSequenceDescriptionS52 DT

COMSPHERE 392xPlus Modems5-22 November 1996 3920-A2-GN31-30Table 5-3(7 of 12)392xPlus S-RegistersS-RegisterDCP LCDCommandSequenceDescriptionS61 CT111

AT Command Set and S-Registers5-233920-A2-GN31-30 November 1996Table 5-3(8 of 12)392xPlus S-RegistersS-RegisterDCP LCDCommandSequenceDescriptionS66 NM

COMSPHERE 392xPlus Modems5-24 November 1996 3920-A2-GN31-30Table 5-3(9 of 12)392xPlus S-RegistersS-RegisterDCP LCDCommandSequenceDescriptionS74 Networ

COMSPHERE 392xPlus Modems1-10 November 1996 3920-A2-GN31-30The CCITT standard for V.34 modulation includes dial- or leased-line operation. For properl

AT Command Set and S-Registers5-253920-A2-GN31-30 November 1996Table 5-3(10 of 12)392xPlus S-RegistersS-RegisterDCP LCDCommandSequenceDescriptionS85 F

COMSPHERE 392xPlus Modems5-26 November 1996 3920-A2-GN31-30Table 5-3(11 of 12)392xPlus S-RegistersS-RegisterDCP LCDCommandSequenceDescriptionS91 Cellu

AT Command Set and S-Registers5-273920-A2-GN31-30 November 1996Table 5-3(12 of 12)392xPlus S-RegistersS-RegisterDCP LCDCommandSequenceDescriptionS96 T

6-13920-A2-GN31-30 November 1996Dial Access SecurityChapter 6, Dial Access Security, is not available for viewing online because it containssecurity-s

A-13920-A2-GN31-30 November 1996Menu TreeOverview A-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

COMSPHERE 392xPlus ModemsA-2 November 1996 3920-A2-GN31-30Displays current status of modem along withdata rate and error control mode.“Status”Status C

Menu TreeA-33920-A2-GN31-30 November 1996YzzYYYYYYYYYYYzYControl SubHS Call_SetupTlk/DataRemoteSecurityTest(DialBackuponly)DialAnswer Change_Directory

B-13920-A2-GN31-30 November 1996TroubleshootingOverview B-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

COMSPHERE 392xPlus ModemsB-2 November 1996 3920-A2-GN31-30Table B-2Leased-Line OperationSymptomActionThe modems do not train-up onleased lines.Verify

TroubleshootingB-33920-A2-GN31-30 November 1996Table B-4Modem — DTE ConnectionSymptomActionThe modem does not accept or echoback AT commands.Verify th

Introduction1-113920-A2-GN31-30 November 1996Government Requirements and Equipment ReturnCertain governments require that instructions pertaining to m

COMSPHERE 392xPlus ModemsB-4 November 1996 3920-A2-GN31-30Table B-5(1 of 2)Modem — VF ConnectionSymptomActionThe modem does not receive a dialtone.Att

TroubleshootingB-53920-A2-GN31-30 November 1996Table B-5(2 of 2)Modem — VF ConnectionSymptom ActionIntermittent disconnects, high errorrates, or exces

C-13920-A2-GN31-30 November 1996Pin AssignmentsOverview C-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

COMSPHERE 392xPlus ModemsC-2 November 1996 3920-A2-GN31-30EIA-232-D Pin AssignmentsTable C-1 lists the EIA-232-D pin assignments for the modem.Table C

Pin AssignmentsC-33920-A2-GN31-30 November 1996VF Connector Pin AssignmentsTable C-2 lists the connector pin assignments for Model 3920Plus modular ja

COMSPHERE 392xPlus ModemsC-4 November 1996 3920-A2-GN31-30Auxiliary Cables Not SuppliedTo add an external telephone to your modem, use an external “Y”

Pin AssignmentsC-53920-A2-GN31-30 November 1996For 2-wire leased-line connections to a JM8 network interface, use an 8-position to 6-positioncrossover

COMSPHERE 392xPlus ModemsC-6 November 1996 3920-A2-GN31-30To connect a Model 3920Plus port to another modem’s EIA-232-D interface, use a 25-pincrossov

D-13920-A2-GN31-30 November 1996CCITT V.25bis Dialing Command and ResponsesOverview D-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

COMSPHERE 392xPlus ModemsD-2 November 1996 3920-A2-GN31-30Call Request CommandsCall Request commands are issued from the DTE to the modem and are resp

COMSPHERE 392xPlus Modems1-12 November 1996 3920-A2-GN31-309. If you experience trouble with this equipment, please contact your sales or servicerepre

CCITT V.25bis DialingD-33920-A2-GN31-30 November 1996ET is similar to the Call Failure Messages Busy Signal and Trunk Busy and the result codeBUSY.NS

COMSPHERE 392xPlus ModemsD-4 November 1996 3920-A2-GN31-30Connect Incoming Call (CIC)The CIC command forces the modem to cancel any DIC commands and a

CCITT V.25bis DialingD-53920-A2-GN31-30 November 1996Request List of Stored Numbers (RLN)The Request List of Stored Numbers (RLN) command displays tel

COMSPHERE 392xPlus ModemsD-6 November 1996 3920-A2-GN31-30Command ResponseA Command Response indicates that the command entered was a valid or invalid

CCITT V.25bis DialingD-73920-A2-GN31-30 November 1996Table D-1(2 of 2)V.25bis CommandsV.25bis CommandAT Command/S-Register EquivalentDescriptionList R

E-13920-A2-GN31-30 November 1996ASCII Character TableOverview E-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

COMSPHERE 392xPlus ModemsE-2 November 1996 3920-A2-GN31-30Table E-1(2 of 4)ASCII CharactersHexadecimalASCII ValueKeyControlCharacterDecimalASCII Value

ASCII Character TableE-33920-A2-GN31-30 November 1996Table E-1(3 of 4)ASCII CharactersHexadecimalASCII ValueKeyControlCharacterDecimalASCII Value3E 06

COMSPHERE 392xPlus ModemsE-4 November 1996 3920-A2-GN31-30Table E-1(4 of 4)ASCII CharactersHexadecimalASCII ValueKeyControlCharacterDecimalASCII Value

F-13920-A2-GN31-30 November 1996Default Configuration OptionsOverview F-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Introduction1-133920-A2-GN31-30 November 1996Technical SpecificationsTable 1-2 shows the technical specifications for the 392xPlus modems.Table 1-2(1

COMSPHERE 392xPlus ModemsF-2 November 1996 3920-A2-GN31-30Table F-1(1 of 10)Factory Default Configuration Options ConfigurationOptionSync LeasedDefaul

Default Configuration OptionsF-33920-A2-GN31-30 November 1996Table F-1(2 of 10)Factory Default Configuration Options ConfigurationOptionSync DialDefau

COMSPHERE 392xPlus ModemsF-4 November 1996 3920-A2-GN31-30Table F-1(3 of 10)Factory Default Configuration Options ConfigurationOptionSync DialDefaultS

Default Configuration OptionsF-53920-A2-GN31-30 November 1996Table F-1(4 of 10)Factory Default Configuration Options ConfigurationOptionSync DialDefau

COMSPHERE 392xPlus ModemsF-6 November 1996 3920-A2-GN31-30Table F-1(5 of 10)Factory Default Configuration Options ConfigurationOptionSync DialDefaultS

Default Configuration OptionsF-73920-A2-GN31-30 November 1996Table F-1(6 of 10)Factory Default Configuration Options ConfigurationOptionSync DialDefau

COMSPHERE 392xPlus ModemsF-8 November 1996 3920-A2-GN31-30Table F-1(7 of 10)Factory Default Configuration Options ConfigurationOptionSync DialDefaultS

Default Configuration OptionsF-93920-A2-GN31-30 November 1996Table F-1(8 of 10)Factory Default Configuration Options ConfigurationOptionSync DialDefau

COMSPHERE 392xPlus ModemsF-10 November 1996 3920-A2-GN31-30Table F-1(9 of 10)Factory Default Configuration Options ConfigurationOptionSync DialDefault

Default Configuration OptionsF-113920-A2-GN31-30 November 1996Table F-1(10 of 10)Factory Default Configuration Options ConfigurationOptionSync DialDef

COMSPHERE 392xPlus Modems1-14 November 1996 3920-A2-GN31-30Table 1-2(2 of 2)Technical Specifications for 392xPlus ModemsSpecifications DescriptionPOWE

G-13920-A2-GN31-30 November 1996Sample ConfigurationsOverview G-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

COMSPHERE 392xPlus ModemsG-2 November 1996 3920-A2-GN31-30Point-to-PointFigure G-1 shows a sample configuration for point-to-point applications.Cable

Sample ConfigurationsG-33920-A2-GN31-30 November 1996Sample Port Rate TablePortRatePort 1Port 2 Port 3 Port 428.8K 9600 9600 4800 480024.0K 9600 Disab

COMSPHERE 392xPlus ModemsG-4 November 1996 3920-A2-GN31-30Extended Point-to-PointFigure G-2 shows a sample configuration for extended point-to-point a

Sample ConfigurationsG-53920-A2-GN31-30 November 19963910 A Use Sync Leased (Answer) default configuration options with the followingexceptions:TX Clo

COMSPHERE 392xPlus ModemsG-6 November 1996 3920-A2-GN31-30Extended MultipointFigure G-3 shows a sample configuration for extended multipoint applicati

Sample ConfigurationsG-73920-A2-GN31-30 November 1996Configuration Options3920Plus A Use Sync Leased (Answer) default configuration options with the f

COMSPHERE 392xPlus ModemsG-8 November 1996 3920-A2-GN31-30CablesCable 1 Use a standard, customer-supplied, EIA-232-D/V.24 cable with a DB-25-P (plug)c

Sample ConfigurationsG-93920-A2-GN31-30 November 1996Configuration Options3920Plus A Use Sync Leased (Answer) default configuration options with the f

COMSPHERE 392xPlus ModemsG-10 November 1996 3920-A2-GN31-30Point-to-Point with Network ManagementFigure G-5 shows a sample configuration for point-to-

2-13920-A2-GN31-30 November 1996Modem InstallationOverview 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Sample ConfigurationsG-113920-A2-GN31-30 November 1996Sample Port Rate TablePortRatePort 1Port 2 Port 3 Port 428.8K 9600 9600 4800 480024.0K 9600 Disa

COMSPHERE 392xPlus ModemsG-12 November 1996 3920-A2-GN31-30Carrier with Network ManagementFigure G-6 shows a sample configuration for COMSPHERE 3000 S

Sample ConfigurationsG-133920-A2-GN31-30 November 1996Configuration Options3921Plus Use Sync Leased (Answer) default configuration options with the fo

COMSPHERE 392xPlus ModemsG-14 November 1996 3920-A2-GN31-30Extended DiagnosticsFigure G-7 shows a sample configuration for extended diagnostics.Figure

Sample ConfigurationsG-153920-A2-GN31-30 November 19963920Plus C Use Sync Leased (Answer) default configuration options with the followingexceptions:T

COMSPHERE 392xPlus ModemsG-16 November 1996 3920-A2-GN31-30Digital BridgingFigure G-8 shows a sample for Digital Bridging.Figure G-8. Sample Configura

Sample ConfigurationsG-173920-A2-GN31-30 November 19963920Plus E, GUse TMp Tributary template default configuration options with the followingexceptio

COMSPHERE 392xPlus ModemsG-18 November 1996 3920-A2-GN31-30Point-to-Point MSDFigure G-9 shows a sample configuration for point-to-point MSD.Figure G-9

Sample ConfigurationsG-193920-A2-GN31-30 November 1996Sample Port Rate Table: Point-to-Point MSD 3920Plus APortRatePort 1Port 2 Port 3 Port 428.8K 192

COMSPHERE 392xPlus ModemsG-20 November 1996 3920-A2-GN31-30Multipoint MSDFigure G-10 shows a sample configuration for multipoint MSD.Figure G-10. Samp

COMSPHERE 392xPlus Modems2-2 November 1996 3920-A2-GN31-30For the carrier-mounted models• Installation instructions•Model 3921Plus modem• One (singlep

Sample ConfigurationsG-213920-A2-GN31-30 November 1996CablesCable 1 Use a standard, customer-supplied, EIA-232-D/V.24 cable with a DB-25-P (plug)conne

H-13920-A2-GN31-30 November 1996Equipment ListEquipmentFeature/Part NumberModel 3920Plus3920-A1-XXXModel 3921Plus3921-B1-XXX6-position, 4-wire modular

Glossary-13920-A2-GN31-30 November 1996GlossaryActive (Operating) A configuration area containing configuration options currently in use by the modem.

COMSPHERE 392xPlus ModemsGlossary-2 November 1996 3920-A2-GN31-30automatic dial standby When operating in Dial Backup mode, this function forces the m

GlossaryGlossary-33920-A2-GN31-30 November 1996circuit pack lock A screw lock tab installed over a circuit card’s latch release tab to prevent the uni

COMSPHERE 392xPlus ModemsGlossary-4 November 1996 3920-A2-GN31-30dBm A decibel referenced to one milliwatt. This unit measures relative signal power.D

GlossaryGlossary-53920-A2-GN31-30 November 1996EIA Electronic Industries Association. This organization provides standards for the datacommunications

COMSPHERE 392xPlus ModemsGlossary-6 November 1996 3920-A2-GN31-30idle A state in which the modem’s operating parameters can be modified or commands ca

GlossaryGlossary-73920-A2-GN31-30 November 1996network A communications circuit.network managementaddressThe customer-assigned diagnostic address of a

COMSPHERE 392xPlus ModemsGlossary-8 November 1996 3920-A2-GN31-30register A part of the modem’s memory that contains values that determine the modem’s

Modem Installation2-33920-A2-GN31-30 November 1996Model 3920Plus Modem InstallationBefore installing your standalone modem, make sure your installatio

GlossaryGlossary-93920-A2-GN31-30 November 1996TDM Time Division Multiplexer. A device that enables the simultaneous transmission ofmultiple independe

COMSPHERE 392xPlus ModemsGlossary-10 November 1996 3920-A2-GN31-30VF Voice Frequency. The part of the audio frequency range used to transmit voice sou

Index-13920-A2-GN31-30 November 1996IndexAAbort (test), 3-55ac power requirements, 1-13Active (Operating) configurations, 4-1Active (Saved) configurat

COMSPHERE 392xPlus ModemsIndex-2 November 1996 3920-A2-GN31-30Ddata access arrangement, 1-2data compression, 4-59data rates. See ratesDATAKIT, 4-16, 4

IndexIndex-33920-A2-GN31-30 November 1996Load Number (LN), 1-12loopbacklocal analog, 3-57–3-58local digital, 3-60–3-61remote digital, 3-58–3-59MMake B

COMSPHERE 392xPlus ModemsIndex-4 November 1996 3920-A2-GN31-30reset control, 3-37result codesenable/disable, 4-43, 5-7extended, 4-43, 5-8list, 5-3–5-4

COMSPHERE 392xPlus Modems2-4 November 1996 3920-A2-GN31-308-POSITION,8-CONDUCTORPLUG FORLEASED-LINENETWORKOPERATION6-POSITION,4-CONDUCTORPLUG FORPERMI

Safety InstructionsB3920-A2-GN31-30 November 1996Important Safety Instructions1. Read and follow all warning notices and instructions marked on the pr

Modem Installation2-53920-A2-GN31-30 November 1996Power Supply ConnectionUse the following steps to connect the modem to an ac power outlet:1.Make sur

COMSPHERE 392xPlus Modems2-6 November 1996 3920-A2-GN31-30Network Management System ConnectionUse the following steps to connect the modem to the netw

Modem Installation2-73920-A2-GN31-30 November 1996SDU is required when the modems in the carrier are controlled by an NMS, or when multiplecarriers in

COMSPHERE 392xPlus Modems2-8 November 1996 3920-A2-GN31-303000 SERIESCARRIERMODEL 3921PlusMULTIPORTMODEMLATCHCIRCUIT CARDGUIDES495-14708SDUMODEL 3921P

Modem Installation2-93920-A2-GN31-30 November 1996If the Model 3921Plus modem is to communicate with an installed SDCP, install the modem asdescribed

COMSPHERE 392xPlus Modems2-10 November 1996 3920-A2-GN31-306. Once you have determined that the modem is installed properly and completed itspower-up

Modem Installation2-113920-A2-GN31-30 November 1996Removing and Replacing the Model 3921Plus ModemCAUTIONWhen removing the Model 3921Plus modem from t

COMSPHERE 392xPlus Modems2-12 November 1996 3920-A2-GN31-30configuration, then you must change the factory setting using either the modem’s DCP (asdes

3-13920-A2-GN31-30 November 1996DCP OperationOverview 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

COMSPHERE 392xPlus Modems3-2 November 1996 3920-A2-GN31-30Test Branch 3-54. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

COMSPHERE 392xPlus ModemsC November 1996 3920-A2-GN31-30Notices

DCP Operation3-33920-A2-GN31-30 November 1996Model 3920Plus Diagnostic Control PanelThe diagnostic control panel (DCP) of the Model 3920Plus modem (Fi

COMSPHERE 392xPlus Modems3-4 November 1996 3920-A2-GN31-30TXDRXDRTSCTSDSRDTRLSDPwrAlrmTestDialRIBusyServSQStatusFront PanelSpkr14212510310410510610710

DCP Operation3-53920-A2-GN31-30 November 1996Table 3-1(1 of 2)392xPlus DCP LEDsLabelColor IndicatesPwr green Power has been applied to the modem.Alrm

COMSPHERE 392xPlus Modems3-6 November 1996 3920-A2-GN31-30Table 3-1(2 of 2)392xPlus DCP LEDsLabel IndicatesColorPort* 1,2,3,4(3921Plusmultiport only)g

DCP Operation3-73920-A2-GN31-30 November 1996Diagnostic Control Panel OperationThe 392xPlus modem’s diagnostic control panel (DCP) is the user interfa

COMSPHERE 392xPlus Modems3-8 November 1996 3920-A2-GN31-30Other IndicatorsOther indicators may turn on depending on existing conditions, such as error

DCP Operation3-93920-A2-GN31-30 November 1996F1 F2 F3 KeysFunction keys F1, F2, and F3 select the LCD choice that appears above the function key.Re

COMSPHERE 392xPlus Modems3-10 November 1996 3920-A2-GN31-30The menu tree contains the following branches: Status — Used to monitor the current status

DCP Operation3-113920-A2-GN31-30 November 1996Top-Level Menu Status and Operational MessagesAccess to all menu tree branches from the DCP begins at th

COMSPHERE 392xPlus Modems3-12 November 1996 3920-A2-GN31-30Table 3-3(2 of 3)Top-Level Menu StatusStatus IndicatesMessageCall Failure Busy Signal The a

i3920-A2-GN31-30 November 1996Table of ContentsPrefaceObjectives and Reader Assumptionsvii. . . . . . . . . . . . . . . . . . . . . . . . . How to Use

DCP Operation3-133920-A2-GN31-30 November 1996Table 3-3(3 of 3)Top-Level Menu StatusStatus IndicatesMessageCall Disconnect ATH Disconnect The modem ha

COMSPHERE 392xPlus Modems3-14 November 1996 3920-A2-GN31-30Messages listed in Table 3-4 are common operational messages that occur during modemoperati

DCP Operation3-153920-A2-GN31-30 November 1996The Top-Level menu’s main branches appear on the LCD in the order of Status, Configure,Control, Test, Ca

COMSPHERE 392xPlus Modems3-16 November 1996 3920-A2-GN31-30The following provides information about the Quick Configuration LCD display.a Displays the

DCP Operation3-173920-A2-GN31-30 November 1996Status BranchThe Status branch of the Top-Level menu allows you to view the current status of the leased

COMSPHERE 392xPlus Modems3-18 November 1996 3920-A2-GN31-30Device Health and Status (DeviceHS)DeviceHS provides a ‘‘snapshot” of current modem alarms

DCP Operation3-193920-A2-GN31-30 November 1996Table 3-6(2 of 3)Health and Status MessagesType IndicatesMessageStatus Subtree Truncate Downstream healt

COMSPHERE 392xPlus Modems3-20 November 1996 3920-A2-GN31-30Table 3-6(3 of 3)Health and Status MessagesType IndicatesMessageSecurity Database Reset The

DCP Operation3-213920-A2-GN31-30 November 1996Displaying VF ConditionsF1Status:VFDisplay ClearF2F3To display VF conditions, select Display from t

COMSPHERE 392xPlus Modems3-22 November 1996 3920-A2-GN31-30EchoFreqOff Echo Frequency Offset displays the frequency offset of the far end echo. Thispa

COMSPHERE 392xPlus Modemsii November 1996 3920-A2-GN31-30Poll List Branch 3-30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

DCP Operation3-233920-A2-GN31-30 November 1996F1VF Counter ClearCommand CompleteF2F3The message Command Complete appears on the LCD’s bottom line indi

COMSPHERE 392xPlus Modems3-24 November 1996 3920-A2-GN31-30DTEDTE displays the state and/or activity of the following interface leads: LSD, DTR, DSR,

DCP Operation3-253920-A2-GN31-30 November 1996V.34When running V.34 modulation, this function displays information about the modem’s receivingand tran

COMSPHERE 392xPlus Modems3-26 November 1996 3920-A2-GN31-30BackupThe Status Backup function displays the configuration of the modem’s current operatin

DCP Operation3-273920-A2-GN31-30 November 1996Table 3-7 provides information about the Status Backup screens. The first column lists all possibleconfi

COMSPHERE 392xPlus Modems3-28 November 1996 3920-A2-GN31-30OptionsThe Options Status function displays all optional firmware features currently instal

DCP Operation3-293920-A2-GN31-30 November 1996F1Record StatusDisplay ClearF2F3To display sequence faults, select Display.F1Record Number 1 Modem O

COMSPHERE 392xPlus Modems3-30 November 1996 3920-A2-GN31-30Select Nxt to scroll through the entries in the Service Log.To exit this function and remai

DCP Operation3-313920-A2-GN31-30 November 1996F1Leased:28.8PList ControlF2F3Press the key until PList appears. Select PList.Within a network link,

COMSPHERE 392xPlus Modems3-32 November 1996 3920-A2-GN31-30Select Nxt to scroll through the entries in the Active or Skip poll lists.To exit this func

Table of Contentsiii3920-A2-GN31-30 November 1996List of FiguresFigure Page1-1 Model 3920Plus Standalone Singleport and Multiport Modems 1-3. . . . .

DCP Operation3-333920-A2-GN31-30 November 1996To implement Change, select the appropriate function (Active, Delete, or Skip). (For Skip, you willneed

COMSPHERE 392xPlus Modems3-34 November 1996 3920-A2-GN31-30The message Command Complete appears on the LCD to indicate that the tributary modem willbe

DCP Operation3-353920-A2-GN31-30 November 1996F1Poll List:AcquirNum Acquired yyyF2F3The number field (yyy) indicates the total number of devices acq

COMSPHERE 392xPlus Modems3-36 November 1996 3920-A2-GN31-30SpeakerSpeaker allows you to make temporary adjustments to the modem’s speaker volume. Upon

DCP Operation3-373920-A2-GN31-30 November 1996ResetReset causes the modem to stop operation and perform a complete program restart. The modem begins t

COMSPHERE 392xPlus Modems3-38 November 1996 3920-A2-GN31-30F1Data StreamPort1 DisableF2F3The port field (for example, Port1) displays the selected po

DCP Operation3-393920-A2-GN31-30 November 1996F1Select DS Port >AllF2F3To change the data stream on all ports again, press the F1 key.orTo exit thi

COMSPHERE 392xPlus Modems3-40 November 1996 3920-A2-GN31-30Press the F1 key until the appropriate digital interface appears. Select the appropriate in

DCP Operation3-413920-A2-GN31-30 November 1996F1Control:RemoveMakeBusyF2F3Press any function key to select RemoveMakeBusy. The message Command Complet

COMSPHERE 392xPlus Modems3-42 November 1996 3920-A2-GN31-30To disconnect the modem from the service line and resume normal operation, press the key

COMSPHERE 392xPlus Modemsiv November 1996 3920-A2-GN31-30List of TablesTable Page1-1 392xPlus Operational Modes1-7. . . . . . . . . . . . . . . . . .

DCP Operation3-433920-A2-GN31-30 November 1996F1Control:Download_CodeF2F3Press the key until Download_Code appears. Press any function key to selec

COMSPHERE 392xPlus Modems3-44 November 1996 3920-A2-GN31-30From the Choose DLL Type screen, press the F1 key to select SC_Clone to request the transfe

DCP Operation3-453920-A2-GN31-30 November 1996Clone Remote in Multipoint ConfigurationsA Trellis Multipoint (TMp) control modem can be used to downloa

COMSPHERE 392xPlus Modems3-46 November 1996 3920-A2-GN31-30Cloning a Single TMp RemoteF1Choose DLL Type >Single MultipleF2F3Press the F1 key to sel

DCP Operation3-473920-A2-GN31-30 November 1996Cloning a Multiple TMp RemoteF1Choose DLL Type >Single MultipleF2F3Press the F3 key to select Multipl

COMSPHERE 392xPlus Modems3-48 November 1996 3920-A2-GN31-30Implementing a Clone Remote OperationWARNINGThe modem begins a transfer of its own program

DCP Operation3-493920-A2-GN31-30 November 1996If unsuccessful, the modem remains in the Download Transfer mode. The LCD’s top line displaysRemClone Fa

COMSPHERE 392xPlus Modems3-50 November 1996 3920-A2-GN31-30Automatic Firmware DownloadNew releases may be available for the 392xPlus modems. The lates

DCP Operation3-513920-A2-GN31-30 November 1996VF Thresholds UpdateThe VF Thresholds Update function allows you to set the thresholds that determine th

COMSPHERE 392xPlus Modems3-52 November 1996 3920-A2-GN31-30NOTENote that a warning ( ) appears on the second line of the screen ifyou enter an inv

Table of Contentsv3920-A2-GN31-30 November 1996Table PageB-6 Online Operation B-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

DCP Operation3-533920-A2-GN31-30 November 1996If the edited VF thresholds are valid, the Save command stores them into nonvolatile memory.When the Sav

COMSPHERE 392xPlus Modems3-54 November 1996 3920-A2-GN31-30Table 3-8(2 of 2)Valid Ranges for VF ThresholdsVF Thresholds Default ValuesValid RangesFar

DCP Operation3-553920-A2-GN31-30 November 1996To access the Test branch from the Top-Level menu, make the following selections:F1Leased:28.8Control Te

COMSPHERE 392xPlus Modems3-56 November 1996 3920-A2-GN31-30SelfSelf performs an internal self-test of the modem, which takes less than a minute to com

DCP Operation3-573920-A2-GN31-30 November 1996Loc Analog LoopThis test is not available when using V.34 modulation in Multiport mode.Loc Analog Loop p

COMSPHERE 392xPlus Modems3-58 November 1996 3920-A2-GN31-30NOTEThe test delays 15 to 30 seconds to allow any outstanding networkmanagement messages to

DCP Operation3-593920-A2-GN31-30 November 1996To access Rem_Digital_Loop from the Test branch, make the following selections:F1Test:Rem_Digital_LoopF2

COMSPHERE 392xPlus Modems3-60 November 1996 3920-A2-GN31-30Loc Digital LoopLoc Digital Loop is issued by a local modem and forces it to loopback any d

DCP Operation3-613920-A2-GN31-30 November 1996This screen does not appear in Singleport mode.F1Test:P1:Dig LoopStartedF2F3The message Started appears

COMSPHERE 392xPlus Modems3-62 November 1996 3920-A2-GN31-30Figure 3-8. Pattern Test and Digital Loopback TestFigure 3-9. End-to-End Pattern TestTo acc