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