3800 series at commands, At command format – Paradyne 3810 User Manual

Page 137

AT Command Set and S-Registers

14-3

3810-A2-GB30-20

November 1996

AT Command Format

AT commands are entered in Command mode using the

following format:

TYPE:

ATXn

Where:

X is the AT command and n is the
specific value for that command.

PRESS:

Enter

In Table 14-1, the value for X is listed in the

AT Command column and the value for n is listed in the
Description column.

Table 14-1

(1 of 12)

3800 Series AT Commands

Command

Description

Front Panel

Branch

Repeat Last Command
Re-executes last command string. (Not to be preceded with AT or followed by
pressing the Return key.)

Call Setup\ Answer

Answer Mode
Goes off-hook and attempts to establish a connection without waiting for a ring.

None

CCITT/Bell Mode
Determines the protocol used if the dial-line rate is set to 300 or 1200 bps. It
has no effect if the rate is set to another value. (See %B.)

B, B0

V.21 or V.22 (300 or 1200 bps)

Bell 103 or Bell 212A (300 or 1200 bps)

The factory default is B1.

Dial
Begins the dialing sequence. The dial string

n (modifiers and telephone

number) is entered after the D command.
Any digit 0–9, * , # , A, B, C, D, may be dialed as a DTMF tone. Only the digits
0–9 can be dialed in Pulse Dial mode.
The following example shows how to dial through a PBX. The dial string
consists of the command string and the telephone number:

None

ATD9W5551234

Command Telephone

String Number

Dial String

Modifiers include the following parameters:
T – Tone (DTMF) dial. Any digit 0–9, * , #, A, B, C, or D can be dialed as tone.

P – Pulse dial. Only the digits 0–9 can be dialed in Pulse Dial mode.

NOTE: Once a dialing method (tone or pulse) has been specified, it will only

remain active until the end of that dial string. The factory setting is tone
dial.

, – Pause. Causes the modem to pause before processing the next character

in the dial string. The length of this pause is determined by the setting of
the Pause Time configuration option (see Line Dialer configuration option
group) or by value held in S-register S8.