AT Command Set and S-Registers
14-193810-A2-GB30-20 November 1996
Table 14-2
(4 of 11)
3800 Series S-Registers
S-Register Front Panel BranchDescription
S38 DTR Cont Repeat
Determines whether automatic dialing of dial backup directory locations
will be repeated continuously, or halted after the first pass.
Regardless of the setting of S38, dialing is locked out after ten failed
attempts to connect to the same number.
Register has the following values:
0 = Disable
1 = Enable
Factory setting is Disable.
Configure\Edit\DTE_Dialer
S39 Receive Buffer Disconnect Delay
Determines the maximum amount of time the modem can continue to
send data in its Receive Buffer to the DTE after the modem is
commanded by the DTE to disconnect, or after the modem detects a line
disconnect.
Register has the following values:
S39 = 0 Disable (Immediate disconnect)
S39 = 1 1 second
S39 = 2 2 seconds
SSS
SSS
S39 = 255 255 seconds
Factory setting is Disable (0).
Configure\Edit\
V42/MNP/Buffer
S40 Auto Make Busy
Register determines if the modem goes off-hook under certain
conditions. This register should only be enabled when the modem is
located behind a user’s Private Branch Exchange (PBX). This register is
only valid for Model 3811 modems.
Register has the following values:
0 = Disable
1 = Enable
Factory setting is Disable.
Configure\Edit\Line Dialer
S41 Dial-Line Rate
Register determines the modem’s data rate and modulation scheme for
operation on dial lines.
Register has the following values:
1
= 4400 (V.32bis)
2
= 12,000 (V.32bis)
3
= 9600 (V.32bis/V.32)
4
= 7200 (V.32bis)
5
= 4800 (V.32bis/V.32)
6
= 2400 (V.22bis)
7
= 1200 (V.22)
8
= 1200 (212A)
10
= 0–300 (V21)
1
1
= 0–300 (103J)
20
= 19,200 (V.32
terbo
)
21
= 16,800 (V.32
terbo
)
Factory setting is 19,200 (V.32
terbo
).
Configure\Edit\Dial Line