Paradyne COMSPHERE 3800PLUS User Manual page 142

COMSPHERE 3800Plus Modems
AT Command
+FCLASS= n
Service Class Selection
Normally set by fax software, Service Class Selection determines the fax
protocol. The command is sent to the modem in the format +FCLASS= n ,
where n can be set to one of three values:
0=Data
1=Class 1 Fax (EIA 578)
2=Class 2 Fax (EIA/TIA SP-2388 dated 20 August 1990)
In the format +FCLASS?, the +FCLASS command returns the current
Service Class: 0, 1, or 2. In the format +FCLASS=?, the +FCLASS
command returns the Service Classes available: 0, 1, 2.
NOTE: Other fax commands supported by the 3800 Plus modems are not
&C n LSD Control
&C0 Forced On. LSD on at all times.
&C1 Standard RS232. LSD is on when the remote modem's carrier
signal is detected. LSD is off when carrier signal is not detected.
&C2 Wink When Disconnect. LSD normally forced ON, turns Off for
approximately one second upon disconnecting.
&C3 Follows DTR. State of LSD follows state of DTR.
&C4 Simulated Control Carrier. State of LSD follows state of remote
modem's RTS.
&C5 =DTR/Disconnect Off. State of LSD follows state of DTR except
upon a disconnect where DTR remains ON and LSD turns Off. DTR
must then toggle Off and ON to turn LSD ON. Use this setting for
AT&T DATAKIT applications. Note that to use this configuration
option, the DTR Action configuration option must be set to
Stndrd_RS232 (&D1 or &D2).
&C6 Bridge Retrain. LSD behaves as if it were set for Stndrd_RS232,
except that it is turned off when a retrain condition lasts longer than
10 seconds, and turned on again when no retrain condition is
detected for a period of 10 seconds.
&D n DTR Action
&D0 Ignore. Modem ignores the true status of DTR and treats it as
always ON.
&D1 Off=Command Mode. Modem enters online Command Mode if
connected when DTR switches Off.
&D2 Standard RS232. DTR Signal is controlled by the DTE.
&D3 Off=Reload Strap. Follows Standard RS232 operation, except that
when DTR switches Off, the modem loads the Active (Saved) area
into the Active (Operating) area.
&D4 Controls On-Hook. Follows Standard RS232 operation, except that
modem does not disconnect until DTR is lowered by the DTE.
&D5 Controls TX Mute. Like Standard RS232, except that when DTR is
lowered at the answering modem, the modem mutes transmitter
output.
13-8
Table 13-1
3800 Plus AT Commands
Description
documented in this manual because they are not normally issued
by the user. They follow the EIA 578 and EIA/TIA SP-2388
specifications.
(6 of 15)
October 1998
Front Panel Branch
None
Configure\Edit\
DTE Interface
Configure\Edit\
DTE Interface
3980-A2-GB30-40