Multitech BL-Series User Manual download pdf (Page 5)

AT Commands for the MT5656ZDX, MT5600ZDX, MT5600BA/BL-Series Modems

Multi-Tech Systems, Inc. Commands Reference Guide (PN S000273D)

AT Commands Detail

Command: AT Attention Code

Values: n/a

Description: The attention code precedes all command lines except A/ and the escape sequence.

Command: Enter Key

Values: n/a

Description: Press the E

NTER or RETURN key to execute most commands.

Command: A Answer

Values: n/a

Description: Answers an incoming call before the final ring.

MT5600BA LCD:

Command: A/ Repeat Last Command

Values: n/a

Description: Repeats the last command string. Do not precede this command with AT. Do not press

ENTER to execute.

Command: Bn Communication Standard Setting

Values: n = 0 or 1

Default: 1

Description: B0 Selects ITU-T V.22 mode when the modem is at 300 or 1200 bps.

B1 Selects Bell 212A when the modem is at 300 or 1200 bps.

Command: Ds Dial

Values: s = dial string (phone number and dial modifiers)

Default: none

Description: Dials telephone number s, where s may be up to 40 characters long and include the

following dial string modifiers.

MT5600BA LCD:

0–9 Digits 0 through 9

* The “star” digit (tone dialing only)

# The “pound” digit (tone dialing only)

A–D A, B, C, and D tone digits. Country specific; some countries may prohibit these digits.

L Redial last number. (Must be placed immediately after ATD.)

P Select pulse-dialing until a T is encountered. Affects current and subsequent dialing.

T Select tone-dialing until a P is encountered. Affects current and subsequent dialing.

W Wait for a new dial tone before continuing to dial. (X2 or X4 must be selected.)

, Pause during dialing for time set in register S8.

; Return to command mode after dialing. (Place at end of dial string.)

! Hook flash. Causes the modem to go quicking on-hook then back off-hook.

@ Wait for silence. Causes the modem to wait for 5 seconds of silence before

processing the next part of the command. If silence is not detected within the time set

in register S7, the modem returns a NO ANSWER or BUSY code.

^ Toggle data calling tone on or off. Applies only to current dialing attempt.

& Detect credit card “bong” tone. If the tone is not detected within the time specified by

S7 (US models), the modem aborts the rest of the sequence and hangs up. The

character should follow the phone number and precede the user’s call card number,

e.g., ATDT1028806127853500

&123456789.

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