27
AT Command
Description
ATS0=1
Modem will auto-answer after one ring.
AT&K0
Flow control disable in some modem models (Check for equivalents in other types)
AT&D0
DTR signal usage.
AT&Y0
Load 0
th
setting values at the modem start.
Speed configu-
ration string
Look for speed configuration table (Below)
AT&W0
Save the values in table as 0
th
setting.
Different modem models can use different command sets. Below communication speed configuration of some
modem models are given. Select the one suitable for your mode, if your modem’s model is not listed then try
each command one by one. If your modem supports the command you will receive <OK> answer from the
NULL modem in the hyperterminal, otherwise you will get <ERROR>
Speed configuration table
Modem model
Speed configuration string
US ROBOTICS sportster voice
AT&N3
APACHE AE56SP-R
ATN0S37=6
BOCAMODEM V.32 BIS
ATN0S37=6
The configuration flow in Hyperteminal will be as follows:
ATS0=1 <enter>
OK answer from the modem
AT&K0 <enter>
OK answer from the modem
AT&D0 <enter>
OK answer from the modem
AT&Y0 <enter>
OK answer from the modem
AT&N3 <enter> (US ROBOTICS ICIN)
OK answer from the modem
AT&W0 <enter>
OK answer from the modem
8.3.3.1 Smart Modem (SM) configuration (programming)
Smart modem will configure itself from the program when using TMON.
The default settings are as follows:
B0 E1 F1 M1 Q0 V1 X3
BAUD = 2400
PARITY = N
WORDLEN = 8
DIAL = PULSE
(TONE which can be programmed)
&A3 &B1 &C1 &D0 &H1 &I0 &K1 &M4
&N0 &R2
&S0 &T5 &Y1
This configuration is done by TMON program.
