User`s manual

U.S. Robotics I-modem Command Reference
Controlling Data Rates • Page 7-1
Chapter 7
Controlling Data Rates
You can set the I-modem to use Þxed or variable serial port rates and Þxed or variable
connection rates. Serial port rates pertain to data transferred between your computer and
the I-modem. Connection rates pertain to data transferred between the I-modem and the
device at the other end of a connection.
Serial Port Rates
Set a Þxed serial port rate to get the highest possible throughput and the best performance.
Set a variable rate to allow the I-modem to match the connection rate.
Your software must support Þxed or variable serial port rates, and must be set to one of the
two settings.
Note Your software may use terms such as locked serial port (Þxed rate) or auto-
baud (variable rate).