3Com Courier, Reference

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A-10 A
PPENDIX
A: S-R
EGISTERS
3 8 Enable V.23. Required for some British
connections.
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 Courier V.Everything
modem immediately hangs up when DTR drops. If the Courier
V.Everything mode
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 Courier V.Everything 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.22 bis (2400
bps)
2 4 Disable MNP/V.42 for V.32/V.32 bis /V.32
terbo (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
0 1 Dial security enabled.
Register Default Function