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Chapter 6: Modem Guide
6.3.3
V.32bis Cellular Connections Using AT
Commands
The internal V.34 modems may be set up in different ways to operate over
a cellular telephone network. The following are typical setups that might
be used.
•
Your modem supports cellular operation from 1200 to 14,400 bps.
•
MNP Class 10 is not active for connections below 1200 bps.
6.3.3.1
Universal Cellular Setup
Land-side modem - AT&F (factory defaults)
This allows the land side to make data connections with land based and
cellular based modems without reducing maximum connection speeds.
Connections over most land lines can reach 14,400 bps modem speeds
between V.32bis modems, and 28,800 bps between V.34 modems. MNP
10 cellular connections occur at the highest speed the modems determine
they can support for each cellular connection. If the land-side modem will
only make cellular connections, we recommend setting \N2.
6.3.3.2
MNP 10 V.32bis Quick Connect Cellular Only
Setup
Land-side modem - AT&F\N2)M1
This forces MNP connections to all modems and MNP 10 cellular
connections to all MNP 10 modems.
Additional connection speed enhancements
In addition, registers :T17 and :T26 can shorten connect times. We
suggest changing these registers only after making some cellular
connections with these registers set to defaults. Using them may limit the
modem's ability to connect over noisy lines.
6-6
CSMIM-T1 Hardware Installation Guide
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