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AT Command Set and S-Registers
14-213810-A2-GB30-20 November 1996
Table 14-2
(6 of 11)
3800 Series S-Registers
S-Register Front Panel BranchDescription
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
255 = Test(2min)
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
Factory setting is –43 dBm.
Configure\Edit\Leased Line
S49 Transmit Buffer Disconnect Delay
Determines the maximum amount of time the modem can continue to
send data in its Transmit Buffer to the remote modem after it is
commanded by the DTE to disconnect.
Register has the following values:
S49 = 0 Disable (Immediate disconnect)
S49 = 1 1 second
S49 = 2 2 seconds
S
S
S
S
S49 = 255 255 seconds
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
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
Factory setting is Disable.
Configure\Edit\Tests