AT Command Set and S-Registers
14-19
3910-A2-GN32-40
September 1998
Table 14-3
(5 of 13)
391x Series S-Registers
S-Register
DCP LCD
Command
Sequence
Description
S47
Auto Dial Standby. Register determines if the modem performs an
automatic dial standby if in Dial Backup mode.
Register has the following values:
0 = Disable
1 = 15 minutes
2 = 1 hour
3 = 4 hours
4 = Test(2min)
5 = Adv 15min
6 = Adv 30min
7 = Adv 1 hr
8 = Adv2minTest
The factory setting is Disable.
Configure\Edit\
Leased Line
S48
Leased-Line Carrier On Level. Register determines if the modem
disconnects if the carrier signal on leased lines falls below –26 dBm or
– 43 dBm.
Register has the following values:
0 = – 43 dBm
1 = –26 dBm
2 = –33 dBm
The factory setting is country dependent (usually – 43 dBm). In France,
the factory setting is –26 dBm in 4-wire operation and –33 dBm in
2-wire operation.
Configure\Edit\
Leased Line
S49
Buffer Disconnect Delay. Register determines how long the modem
continues to transmit data stored in its buffers when the modem is
commanded to disconnect by a locally attached DTE.
Enter a value from 0–255 seconds. (A value of 0 disables this
register.) The factory setting is 10 seconds.
Configure\Edit\
V42/MNP/Buffer
S51
DTE RL (CT140). Register determines if the modem performs a
remote digital loopback if it receives a CT140 signal from the DTE.
Register has the following values:
0 = Disable
1 = Enable
The factory setting is Disable.
Configure\Edit\
Tests
S52
DTE LL (CT141). Register determines if the modem performs a local
analog loopback if it receives a CT141 signal from the DTE.
Register has the following values:
0 = Disable
1 = Enable
The factory setting is Disable.
Configure\Edit\
Tests
