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3 - AT Commands, S-Registers and Result Codes
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Chapter 3 - AT Commands, S-Registers and
Result Codes
Command Summary
This section summarizes your modem’s AT commands, S-Registers and
Result codes.
Command: AT Attention Code
Values: n/a
Description: The attention code precedes all command lines
except A/ and the escape sequence.
Command: ENTER or Carriage Return <CR> Key
Values: n/a
Description: Press the ENTER or Carriage Return key to execute
most commands.
Command: A Answer
Values: n/a
Description: Answer an incoming call before the final ring.
Command: A/ Repeat Last Command
Values: n/a
Description: Repeat the last command string. Do not precede
this command with AT. Do not press ENTER to
execute.
Command: B
n
Communication Standard Setting
Values:
n
= 0 or 1
Default: 1
Description: B0 Select ITU-T V.22 mode when modem is at 1200
bps.
B1 Select Bell 212A when modem is at 1200 bps.
Command: C
n
Carrier Control
Values:
n =
1
Default: 1
Description: C1 Normal transmit carrier switching (included for
backward compatibility with some software).