User`s manual

U.S. Robotics I-modem Command Reference
Appendix A: Alphabetic Command Summary • Page A-3
A Force an I-modem to answer when it is not receiving an incoming call.
Bn Set handshaking options.
B0 ITU-T V.25 answer sequence; required to answer all V.34-type and over-
seas calls.
B1 Bell answer tone. This setting selects HST modulation, but use it only if the
I-modem is not required to answer V.34-type calls.
Cn Enable or disable the transmitter.
C0 Transmitter disabled; for receiving only.
C1 Transmitter enabled.
Dn Dial a phone number and issue other optional commands.
The numbers 0Ð9, plus * and # are accepted. The maximum number of characters
allowed is 36, including the AT preÞx, punctuation, and spaces.