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DIVA T/A ISDN ModemReference Guide

What is ISDN?DIVA T/A ISDN Modem Reference Guide ◆ Page 10What is BACP/BOD?DIVA T/A supports the Bandwidth Allocation Control Protocol (BACP) and Ba

What is ISDN?DIVA T/A ISDN Modem Reference Guide ◆ Page 11What is DBA?DIVA T/A also supports Dynamic Bandwidth Allocation (DBA), known also as Call

What is ISDN?DIVA T/A ISDN Modem Reference Guide ◆ Page 12What is Always On / Dynamic ISDN (AO/DI)?AO/DI is only available if you have subscribed to

What is ISDN?DIVA T/A ISDN Modem Reference Guide ◆ Page 13What is Data Compression?To establish communications over a PPP link, each end of the conn

DIVA T/A ISDN Modem Reference Guide ◆ Page 14Locating AT CommandsTo make it easier for you to locate a command, this guide has organized commands in

Locating AT CommandsDIVA T/A ISDN Modem Reference Guide ◆ Page 15•The next command will only be accepted by the DIVA T/A once the previous command h

DIVA T/A ISDN Modem Reference Guide ◆ Page 16AT Command GroupsThe AT commands in this guide are grouped according to their functions. For an alphabe

DIVA T/A ISDN Modem Reference Guide ◆ Page 17Alphabetical List of Supported AT CommandsThe following tables summarize, in alphabetical order, the AT

Alphabetical List of Supported AT CommandsDIVA T/A ISDN Modem Reference Guide ◆ Page 18AT! CommandsAT!An Directory Number/Port Assignment (static) 3

Alphabetical List of Supported AT CommandsDIVA T/A ISDN Modem Reference Guide ◆ Page 19AT!V3=nV.110 Parity (International version only) 44AT!V4=n V.

Eight Edition (July 1999) 206-193-08DIVA T/A ISDN Modem is a trademark of Eicon Technology Corporation.Microsoft, Windows, and Win

Alphabetical List of Supported AT CommandsDIVA T/A ISDN Modem Reference Guide ◆ Page 20AT% Comm an dsAT%A 2=n Protocol Control (static) 40AT%A 4=n

Alphabetical List of Supported AT CommandsDIVA T/A ISDN Modem Reference Guide ◆ Page 21AT& Com mandsAT&Cn Data Carrier Detect 36AT&Dn D

Alphabetical List of Supported AT CommandsDIVA T/A ISDN Modem Reference Guide ◆ Page 22AT* Com man dsAT*An= v Abbreviated Ring Control (North Ameri

Alphabetical List of Supported AT CommandsDIVA T/A ISDN Modem Reference Guide ◆ Page 23AT> CommandsAT>? Last AT Command Result Explained 29AT&

Alphabetical List of Supported AT CommandsDIVA T/A ISDN Modem Reference Guide ◆ Page 24AT@ CommandsAT@D AT E? Current Date 29AT@D AT E= Set Date 29A

Alphabetical List of Supported AT CommandsDIVA T/A ISDN Modem Reference Guide ◆ Page 25Other AT CommandsAT? View Last Accessed S Switch 57AT=n Last

Alphabetical List of Supported AT CommandsDIVA T/A ISDN Modem Reference Guide ◆ Page 26S-RegistersS0 Auto-Answer 57S1 View Ring Count 57S2 Escape C

Alphabetical List of Supported AT CommandsDIVA T/A ISDN Modem Reference Guide ◆ Page 27AT$ (Utility) CommandsAT$CP=n Enable/Disable Compression 54AT

Alphabetical List of Supported AT CommandsDIVA T/A ISDN Modem Reference Guide ◆ Page 28Mini-monitor CommandsThese command are only available when yo

DIVA T/A ISDN Modem Reference Guide ◆ Page 29General AT CommandsThe following table describes the general AT commands available to the DIVA T/A.ATIn

ContentsWhat is ISDN? ... 4ISDN

General AT CommandsDIVA T/A ISDN Modem Reference Guide ◆ Page 30A/Re-execute Previous Command. Re-executes all the commands in the command buffer. T

DIVA T/A ISDN Modem Reference Guide ◆ Page 31ISDN Configuration CommandsThe following table describes the ISDN Configuration Commands.AT!AnDirectory

ISDN Configuration CommandsDIVA T/A ISDN Modem Reference Guide ◆ Page 32AT!C1=nISDN Switch Type. Specifies the ISDN Switch Type.For North American F

ISDN Configuration CommandsDIVA T/A ISDN Modem Reference Guide ◆ Page 33AT!D3= nDefault Parity. Specifies the parity to be used, when the DTE charac

ISDN Configuration CommandsDIVA T/A ISDN Modem Reference Guide ◆ Page 34AT!N2=nISDN Directory Number Assignments for 2nd B-channel and 2nd Phone por

ISDN Configuration CommandsDIVA T/A ISDN Modem Reference Guide ◆ Page 35AT!OnOutgoing Call Type. Specifies the default call type for outgoing calls

DIVA T/A ISDN Modem Reference Guide ◆ Page 36COM Port Configuration CommandsThe following AT commands pertain to the COM port configuration.AT&C

COM Port Configuration CommandsDIVA T/A ISDN Modem Reference Guide ◆ Page 37AT XnExtended Result Codes. This command selects which subset of the res

COM Port Configuration CommandsDIVA T/A ISDN Modem Reference Guide ◆ Page 38AT\VnConnect Message Control. This command controls the format of connec

DIVA T/A ISDN Modem Reference Guide ◆ Page 39Call Control CommandsThe following table describes the Call Control Commands.AT!T1= nIncoming Call Assi

DIVA T/A ISDN Modem Reference Guide ◆ Page 4What is ISDN?While you've heard of ISDN, there's a good chance you're unsure whether you

Call Control CommandsDIVA T/A ISDN Modem Reference Guide ◆ Page 40AT%A 2=nProtocol Control. Specifies the protocol you want to use for your ISDN con

Call Control CommandsDIVA T/A ISDN Modem Reference Guide ◆ Page 41ATDnDial a Number. Directs the DIVAT/A to dial the specified number, attempt to es

DIVA T/A ISDN Modem Reference Guide ◆ Page 42V.120 Configuration CommandsThe following AT commands pertain to V.120 configuration on your DIVA T/A.A

V.120 Configuration CommandsDIVA T/A ISDN Modem Reference Guide ◆ Page 43AT!E5=nV.120 N200 (Maximum Retry Count). Applicable to the multiframe mode

DIVA T/A ISDN Modem Reference Guide ◆ Page 44V.110 Configuration Commands Use the following AT commands to specify the V.110 configuration on your D

DIVA T/A ISDN Modem Reference Guide ◆ Page 45Profile Commands The following table describes the profile commands:AT&FUse Factory Settings in Cur

DIVA T/A ISDN Modem Reference Guide ◆ Page 46Multilink PPP CommandsThe following table describes the MLPPP configuration commands. AT%M 1=nLocal End

Multilink PPP CommandsDIVA T/A ISDN Modem Reference Guide ◆ Page 47AT%P8 =nDynamic Bandwidth Allocation (only available on models equipped with anal

Multilink PPP CommandsDIVA T/A ISDN Modem Reference Guide ◆ Page 48Endpoint Discriminator Class/AddressThe following table describes the list of cla

DIVA T/A ISDN Modem Reference Guide ◆ Page 49Always On / Dynamic ISDN AT CommandsThe following table describes the Always On / Dynamic ISDN AT comma

What is ISDN?DIVA T/A ISDN Modem Reference Guide ◆ Page 5Telecommuters, for example, benefit immensely from ISDN. Whether you access the corporate L

Always On / Dynamic ISDN AT CommandsDIVA T/A ISDN Modem Reference Guide ◆ Page 50AT!X6= nX.25 Maximum Window Size. Specifies the X.25 maximum window

Always On / Dynamic ISDN AT CommandsDIVA T/A ISDN Modem Reference Guide ◆ Page 51AT!X13=nDelay Before Opening 2nd B-channel (with BACP enabled). Spe

Always On / Dynamic ISDN AT CommandsDIVA T/A ISDN Modem Reference Guide ◆ Page 52AT!X18Set Normal Mode for Bandwidth on Demand. Sets the Bandwidth o

Always On / Dynamic ISDN AT CommandsDIVA T/A ISDN Modem Reference Guide ◆ Page 53AT!X25=nSpecify Number of Logical Connection Numbers. Note that the

DIVA T/A ISDN Modem Reference Guide ◆ Page 54Utility CommandsThe following table describes the Utility Commands.AT$CP=nEnable / disable compression.

Utility CommandsDIVA T/A ISDN Modem Reference Guide ◆ Page 55AT$VLStart or display the Result of a LAPD trace.You can specify the total size of the

Utility CommandsDIVA T/A ISDN Modem Reference Guide ◆ Page 56AT$VXStart an AO/DI X.25 Trace.You can specify the total size of the trace buffer and t

DIVA T/A ISDN Modem Reference Guide ◆ Page 57S-Register CommandsThe following five commands apply to S-Registers, which are described further below.

S-Register CommandsDIVA T/A ISDN Modem Reference Guide ◆ Page 58S25Data Terminal Ready Detection Delay. Specifies the duration that the Data Termina

DIVA T/A ISDN Modem Reference Guide ◆ Page 59Analog Device CommandsThe following table describes the analog device commands. These commands are only

What is ISDN?DIVA T/A ISDN Modem Reference Guide ◆ Page 6ISDN Communication ChannelsIn the ISDN interface, a number of communication channels are ca

Analog Device CommandsDIVA T/A ISDN Modem Reference Guide ◆ Page 60AT*FnAnalog Device Ring Frequency. Specifies the analog device ring frequency. Wh

Analog Device CommandsDIVA T/A ISDN Modem Reference Guide ◆ Page 61AT*Sn=vDisable Analog Device Calling Features. Specifies whether supplementary se

DIVA T/A ISDN Modem Reference Guide ◆ Page 62Mini-monitor CommandsThe following commands relate to the Mini-monitor. They are all case sensitive.You

DIVA T/A ISDN Modem Reference Guide ◆ Page 63AT Command Result CodesThis section provides the result codes, also known as status messages, that are

AT Command Result CodesDIVA T/A ISDN Modem Reference Guide ◆ Page 64DCE Speed means different things for different applications. For Digital calls,

AT Command Result CodesDIVA T/A ISDN Modem Reference Guide ◆ Page 6554 CARRIER 19200 CONNECT 1920055 CARRIER 21600 CONNECT 2160056 CARRIER 240

IndexDIVA T/A ISDN Modem Reference Guide ◆ Page 66AAlphabetical list of supported AT commands, 17Always On / Dynamic ISDN (AO/DI), 12Analog commands

What is ISDN?DIVA T/A ISDN Modem Reference Guide ◆ Page 7H-ChannelThe H-channel is used for high-speed user data traffic at bit rates higher than 64

What is ISDN?DIVA T/A ISDN Modem Reference Guide ◆ Page 8Connecting to ISDN - BRI and PRIThere are two types of access interfaces to the ISDN: Basic

What is ISDN?DIVA T/A ISDN Modem Reference Guide ◆ Page 9What is Multilink PPP?Multilink PPP combines two 64 Kbps ISDN channels to provide a maximum