User`s manual

U.S. Robotics I-modem Command Reference
Handshaking, Error Control, Data Compression, and Throughput • Page 11-5
V.120 Rate Adaptation
If you set the I-modem to V
.120, it will negotiate only for V.120 connections. If a V.120
connection cannot be made, the I-modem does not negotiate for other types of connec-
tions.
V.110 Rate Adaptation
If you set the I-modem to V
.110, it will negotiate only for V.110 connections. If a V.110
connection cannot be made, the I-modem does not negotiate for other types of connec-
tions.
Analog Modem or Fax Emulation
The I-modem does not try to make a digital connection and works only in Analog mode. If
you know youÕll make and receive only analog calls, this setting shortens the connect time.
Analog Mode Handshaking
When making analog connections, the I-modem defaults to V.34 and tries for the highest
possible speed (33.6 Kbps) when it attempts to connect with a modem. The V.34 range
spans 33.6, 31.2, 28.8, 26.4, 24, 21.6, 19.2, 16.8, and 14.4 Kbps, and 9600, 7200, 4800,
and 2400 bps. If the remote analog device is not V.34 capable, a connection is made using