User`s manual

U.S. Robotics I-modem Command Reference
Analog Synchronous Applications • Page 16-16
Note Due to the nature of synchronous dialup, the I-modem auto-answers only
on the third or fourth ring.
Example: ATS0=1 <Enter>
5. Set the I-modem to enter clear-channel synchronous mode.
Example: AT*V2=4 <Enter>
Dialing
6. Send &M1 to have the I-modem enter synchronous mode, followed by the number to
dial. Dial should be the last command before the Carriage Return.
Example: AT&M1DT555-1234 <Enter>
Alternatively, you can combine all the previous commands into a compound command,
like this:
AT&F0B0&X0&N0S0=1&M1*V2=4DT555-1234 <Enter>
This tells the I-modem to load the Òno ßow controlÓ factory template, and then use the
V.25 answer sequence, make the I-modem the source of timing signals, set a variable
connection rate, auto-answer incoming calls, switch to online synchronous mode after
connection, enter clear-channel synchronous mode, and then dial 555-1234.