G Changing Modem Modulations And Modem Speed - Paradyne KeepInTouch 3760 User Manual

NOTE:
The modem enters online Command mode and responds
with an OK.
To return to Data mode from online Command mode, use the O
command. Enter the following command:
TYPE: ATO
PRESS: Enter
Changing Modem Modulations
and Modem Speed
A modem modulation is a set of guidelines that determine how
the modems connect and at what speed they communicate.
Modulations, such as V.32 bis (pronounced vee-dot 32 bis),
V.32, V.22 bis, V.22, Bell 212A, V.21, Bell 103J, and V.23, have
a maximum and minimum data rate, the speeds at which data is
transferred over the telephone line. These rates are measured in
bits per second.
For example, a V.32 bis modem can operate at data rates
ranging from 14,400 bps to 4800 bps while a V.22 bis modem
operates at 2400 and 1200 bps. Normally, modems using
different modulations do not connect. However, through a
function known as automoding, the KeepInTouch Card modem
is capable of detecting and then switching to the remote
modem's modulation assuring compatibility with a variety of
modems.
If there is ever a need to change modem modulations, use the
%B command, which is described in Chapter 4 and in the help
text file "atcmds.txt" on the Installation Utilities diskette.
3-8
Issue 3 April 1994