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S-Register
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.
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.
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.
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.
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.
3910-A2-GN32-40
Table 14-3
(5 of 13)
391x Series S-Registers
Description
September 1998
AT Command Set and S-Registers
DCP LCD
Command
Sequence
Configure\Edit\
Leased Line
Configure\Edit\
Leased Line
Configure\Edit\
V42/MNP/Buffer
Configure\Edit\
Tests
Configure\Edit\
Tests
14-19
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