Western Telematic SRM-100 - Manual (Page 52)

Register Range Default Function
S38 0 - 255 20 Delay Before Forced Hang Up. This register specifies the delay (in seconds)
between the modem’s receipt of the H command to disconnect (or On-to-Off
transition of DTR if the modem is set to follow the signal), and the
disconnect operation. Applicable to error correction connection only. This
register can be used to ensure that data in the modem buffer is sent before the
modem disconnects.
S39 --- --- Bit Mapped Register.
S40 --- --- Bit Mapped Register.
S41 --- --- Bit Mapped Register.
S46 136 or
138
138 Protocol Selection. This register controls V.42bis compression.
S46=136
Disable V.42bis compression.
S46=138 Enable V.42bis compression.
S48 0, 7 or
128
7 V.42 Negotiation Action. The V.42 negotiation process determines the
capabilities of the remote modem. Note that this process is bypassed when
the capabilities of the remote modem are known and negotiation is
unnecessary.
S48=0
Disables negotiation. Bypasses the detection and negotiation
phases, and proceeds with V.42 (LAPM).
S48=7 Enables negotiation.
S48=128 Disables negotiation. Bypasses the detection and negotiation
phases, and proceeds with the fallback action specified by
register S36. Can be used to force MNP.
S82 --- --- S82 is included for compatibility purposes only. Changing this register will
have no effect.
S86 0, 4, 5, 8,
12, 13, or
14
--- Connection Failure Cause Code. When the modem issues a NO CARRIER
result code, a value is written to this S register to help determine the reason
for the failed connection. S86 records the first event that contributes to a NO
CARRIER message.
S86=0
Normal Disconnect, no error occurred.
S86=4 Loss of carrier.
S86=5 V.42 negotiation failed to detect an error correcting modem at
the other end.
S86=9 The modems could not find a common protocol.
S86=12 Normal disconnect initiated by the remote modem.
S86=13 Remote modem does not respond after 10 re-transmissions of
the same message.
S86=14 Protocol violation.
10-6
SRM-100 - Secure Rack Modem, User's Guide S-Registers