Cellular Communications
D-4
Issue 2 May 1995
Table D-1. Configuration Options Set by Automatic Cellular Setup
Configuration
Option
Automatic Cellular Setting
AT Command
Equivalent
Maximum Frame Size
32 characters/frame
\A4
Maximum Data Rate
14,400 bps, V.32bis
%BL14400
Error Control Mode
V.42 (4800 bps or higher), V.42
or MNP (2400 bps or lower)
\N8
No Carrier Disconnect
10 seconds
S10=100
No Answer Timeout
90 seconds
S7=90
Autorating
Enabled, start at 9600
S76=3
When the modem detects a normal land-line telephone
connection, the options in Table D-1 automatically switch back to
their non-cellular settings.
Using Cellular Modem Pools
Many cellular carriers now offer Cellular Modem Pools which
support the ETC protocol. These Cellular Modem Pools are
highly recommended, as they allow your ETC modem to connect
to virtually any modem in the world with peak performance.
Contact your local cellular service provider for information on the
availability of Cellular Modem Pools in your area.
To place a call to a remote site through a Cellular Modem Pool,
add a
∗
3282 command to the ATDT command prior to the dial
string:
TYPE:
ATDT
∗
3282
n
where
n is the telephone number
PRESS: Enter
The 3282 number is easy to remember, as it spells out the word
DATA on your telephone keypad.
