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AT Command Set and S-Registers
13-93980-A2-GB30-40 October 1998
Table 13-1
(7 of 15)
3800
Plus
AT Commands
AT Command Front Panel BranchDescription
&F
n
Select Factory Default Configuration Options
Loads factory configuration options into Active (Operating) area.
&F0 Async Dial
&F1 Sync Dial
&F2 Sync Leased: Answer
&F3 UNIX Dial
&F4 Sync Leased: Originate
&F5 Cellular (Mobile)
&F6 Cellular (PSTN)
The &F5 and &F6 commands are available only if ETC is installed.
If your modem is attached to a cellular telephone, use the &F5 command
to configure the modem for cellular communications. &F5
(Cellular(Mobile)) sets the following configuration options:
Configure\Factory
AT
Option
Command 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 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
Option
Command Value
Transmit Level &I99
Error Control Mode \N4
No Answer Timeout S7=120
No Carrier Disconnect S10=100
V.32bis Train S43=1
V.42 ARQ Window Size S89=9
Cellular Enhancements S91=1
The &F0, &F3, &F5, and &F6 commands leave the modem in
AT Command mode. The other commands place the modem into
Dumb mode. The only way to return to AT command control is via
the front panel.
&G
n
V.22bis Guard Tone
&G0 Disable.
&G1 550 Hz.
&G2 1800 Hz.
Configure\Edit\Dial Line