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152 MultiModemISI Hybrid Series, ISIHI-2S
Appendix
Appendix I: AT Command Summary (Modem)
COMMAND DESCRIPTION
AT Attention Code
The attention code precedes all command lines except A/ and the escape sequence.
RETURN RETURN Key
or ENTER Press the RETURN (ENTER) key to execute most commands.
A Force Answer Mode
Answer call immediately without waiting for ring.
A/ Repeat Last Command
Repeat the last command string. Do
not
precede this command with AT. Do
not
press RETURN
(or ENTER) to execute.
B
n
Answer Tone
n
= 0, 1, 2, 3, 15, or 16
B0 Select ITU-T V.22 mode when modem is at 1200 bps
B1 Select Bell 212A when modem is at 1200 bps
B2 Deselect V.23 reverse channel
B3 Deselect V.23 reverse channel
B15 Select V.21 when the modem is at 300 bps
B16 Select Bell 103J when the modem is at 300 bps
&B
n
V.32 Auto Retrain
n
= 1
&B1 Enable V.32 auto retrain
%B View Numbers in Blacklist
If blacklisting is in effect, this command displays the numbers for which the last call attempted in
the previous two hours failed. In countries that do not require blacklisting, the ERROR result
code appears.
C
n
Carrier Control
n
= 1
C1 Normal transmit carrier switching (included for backward compatibility with some software)
&C
n
Carrier Detect Control
n
= 0 or 1
&C0 Force Carrier Detect on
&C1 Let Carrier Detect follow carrier signal
-C
n
Data Calling Tone
n
= 0 or 1
-C0 Disable V.25 data calling tone
-C1 Enable V.25 data calling tone
%C
n
Data Compression Control
n
= 0 or 1
%C0 Disable V.42bis / MNP 5 data compression
%C1 Enable V.42bis / MNP 5 data compression
D
s
Dial
s
= phone #
Dial telephone number
s
, where
s
may include up to 40 alpha-numeric characters, and the L, P,
T, V, W, comma (,), colon (:), semicolon (;), !, $, @ and ^ dial string modifiers