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COMSPHERE 3800 Series Modems – Model 3830
4-16 August 1998 3830-A2-GB91-30
Table 4-2
(10 of 23)
Model 3830 AT Commands
&F
n
Select Factory Default Configuration Options (cont’d)
If ETC is installed and your modem is attached to a cellular telephone,
use the &F5 command to configure the modem for cellular
communications. &F5 sets the following configuration options:
AT Command
Option Value
Maximum Frame Size \A4
Error Control Mode \N4
Auto-Answer Rings S0=3
No Answer Timeout S7=120
No Carrier Disconnect S10=100
V.32bis Train S43=1
V.32bis Autorate S76=3
V.42 ARQ Window Size S89=9
Cellular Enhancements S91=1
If ETC is installed, and your modem is attached to a normal dial
telephone line but sometimes communicates with a modem that is
attached to a cellular phone, use the &F6 command. &F6
(Cellular(PSTN)) sets the following configuration options:
AT Command
Option Value
Transmit Level &I100
Error Control Mode \N4
No Answer Timeout S7=120
No Carrier Disconnec S10=100
V.32bis Train S43=1
V.42 ARQ Window Size S89=9
Cellular Enhancements S91=1
&G
n
V.22bis Guard Tone
Determines whether the V.22bis guard tone is disabled, set to 550 Hz, or
set to 1800 Hz.
&G0 Disable.
&G1 550 Hz.
&G2 1800 Hz.