A-10
A
PPENDIX
A: S-R
EGISTERS
4 16 Change MR to DSR
6 64 Disable the remote-access busy
message.
7 128 Disable V.32
terbo.
S38 0 Sets the duration, in seconds, before a forced hang-up and
clearing of the Transmit buffer when DTR drops during an
ARQ call.
This is provided to allow time for a remote device to
acknowledge receipt of all transmitted data. Default = 0:
The Business Modem immediately hangs up when DTR
drops. If the Business Modem receives the ATH command,
it ignores S38 and immediately hangs up.
S41 0 Sets the number of allowable remote-access login attempts,
thus enabling or disabling remote access.
The default setting of zero allows no remote login
attempts, disabling remote access. A value of 1 or greater
enables remote access. If the number of unsuccessful login
attempts exceeds the limit set by this register, the Business
Modem returns online and any further login attempts
during the remainder of that connection are refused.
S42 126 Stores the ASCII decimal code for the remote-access escape
character. The default character is a tilde (~).
S43 200 Sets the duration, in fiftieths of a second, of the guard time
for the remote-access (~~~~) sequence.
S44 15 Sets the duration, in seconds, of the interval between losing
carrier and reestablishing a connection.
S51 0 Bit-mapped register. See the beginning of this appendix for
information about setting bit-mapped registers.
Bit Value Result
0 1 Disable MNP/V.42 for V.22 (1200
bps)
1 2 Disable MNP/V.42 for V.22bis (2400
bps)
2 4 Disable MNP/V.42 for
V.32/V.32bis/V.32terbo
(9600/14400/19200/21600 bps).
6 64 Disable Selective Reject
S53 126 Bit-mapped register. (See the beginning of this appendix for
information about setting bit-mapped registers).
Bit Value Result
Register Default Function
