User`s guide

3-9

AT Commands For Data Mode

A/ (Repeat Last

Command)

Repeat the last AT command string issued. An "AT"

prefix is not used. Do not terminate this command with

<ENTER>.

A (Manual Answer)

Go off-hook and enter the answer mode. After a few

seconds, the modem will initiate an answer tone.

Bn (Bell/CCITT)

Selects the frequency transmitted by the modem.

COMMAND DESCRIPTION

B0 Use CCITT V.22 at 1200 bps, and CCITT

V.21at 300 bps.

B1* Use Bell 212A at 1200 bps, and Bell 103 at

300 bps.

B2 Use CCITT V.23 only. The originating

modem transits at 75 bps (and receives at

1200 bps); the answering modem receives

at 75 bps (and transmits at 1200 bps).

B3 Selects CCITT V.23 only. The originating

modem transmits at 1200 bps (and

receives at 75 bps); the answering modem

receives at 1200 bps (and transmits at 75

bps).