Eicon Networks DIVA T/A ISDN Modem manual Locating AT Commands

Page 14

Locating AT Commands

To make it easier for you to locate a command, this guide has organized commands in two ways.

A list of AT Commands grouped into categories can be found on page 16.

An alphabetical list of commands is available on page 17.

AT Command Syntax Conventions

When issuing AT commands, you must abide by the following syntax conventions:

A command line consists of a prefix, body, and terminator. Each command line must begin with “AT” (except A/).

AT commands must be terminated by a carriage return (except A/).

Commands entered in upper or lower case are accepted (except mini-monitor commands, which must be entered only in lower case).

The body is a string of commands restricted to printable ASCII characters (032 - 126).

Space (ASCII 032) and control characters other than CR (ASCII 013) and BS (ASCII 010) in the command string are ignored.

A command line may be aborted at any time by entering <Ctrl-X> (ASCII 024).

Carriage returns are programmable through register S3.

The default terminator is the ASCII <CR> character. Characters that precede theAT prefix are ignored.

The DIVA T/A recognizes the backspace character. When echo is enabled, a backspace or delete is echoed as a backspace character followed by a space character, and another backspace. The code for the backspace character is programmable through register S5. Values equal to 0, greater than 32, or the carriage return character value, cannot be used for the backspace character.

The AT sequence may be followed by any command sequence, except for the following: ATZ, ATD, ATA, AT@MENU, AT>H, AT>VC, AT>VD, AT>VT, and AT>Z. Commands following these are ignored.

Execution of commands ATD and ATA, either as a result of a direct command or a re-execute command, will be aborted if another character is entered before completion of the handshake.

The maximum number of characters on any command line is 80 (including “A” and “T”).

If a syntax error is found in a command, the remainder of the line will be ignored and an ERROR code will be returned.

Missing decimal parameters (n) are assumed as 0.

Most commands entered with parameters out of range will not be accepted and the ERROR response will be returned to the DTE.

DIVA T/A ISDN Modem Reference Guide Page 14

Image 14
Contents Diva T/A Isdn Modem Reference Guide Eight Edition July 206-193-08 Contents What is ISDN? Diva T/A Isdn Modem Reference GuideWhat is ISDN? Isdn Communication Channels ChannelChannel Connecting to Isdn BRI and PRI Basic Rate AccessWhat is Multilink PPP? What is BACP/BOD? What is DBA? What is Always On / Dynamic Isdn AO/DI? What is Data Compression? Locating AT Commands Locating AT Commands AT Command Groups Alphabetical List of Supported AT Commands AT! Commands Alphabetical List of Supported AT CommandsAlphabetical List of Supported AT Commands AT% Commands AT& Commands AT* Commands AT Commands AT@ Commands Other AT Commands Registers AT$ Utility Commands Mini-monitor Commands General AT Commands General AT Commands Values for n Isdn Configuration CommandsDefaults Isdn Configuration Commands INS-Net64, NI-1, or 5ESS, µ law will be used default None defaultDefault1 AT!D3=nNumber. Numbers are separated by a semicolon Default null string this is an optional valueAT!N2=n AT!N3=nOn region 255 do not attempt 56k data call retry For more details, refer to the Rvscom documentationAT!X56=n COM Port Configuration Commands COM Port Configuration Commands RingFor example, Connect Upon connection, the Diva T/A reports the DCE speedCall Control Commands Call Control Commands ATAATH Configuration Commands Configuration Commands Use the default settings AT!V0=nProfile Commands Multilink PPP Commands Multilink PPP Commands Internet Protocol IP Endpoint Discriminator Class/AddressAT%M3=b3c665ac11 Always On / Dynamic Isdn AT Commands Always On / Dynamic Isdn AT Commands Default 1000 bytes AT!X13=n when Bacp is disabled, seeWill be opened after the delay specified by AT!X10 AT!X14=nAT!X18 Default values for each setting, and is defined as followsDefault AT!X22=n Defined as followsConnection numbers affects the range ofAT!X21. SeeAT!X21 Default CF PPP overAT!X25=n AT!X26=nUtility Commands Start or display the Result of a Lapd trace Utility CommandsInternal TA access command reserved for VU Start or Display the Result of a PPP traceStart an AO/DI X.25 Trace Enter the monitor on the next resetSoft reset the unit and enter the monitor Register Commands AT?Register Commands Analog Device Commands Analog Device Commands AT*FnEnable with default values default To be disabledDisable. Recommended for modem/fax calls Enable using same terminal endpoint identifier as data portMini-monitor Commands AT Command Result Codes Carrier Connect AT Command Result CodesConnect Connect 1200T/75R Protocol Transparent ModeConnect 75T/1200R Protocol NoneIndex BACP/BOD