Multitech MultiModemDSVD User Manual page 54

MultiModemDSVD User Guide
Register
S37
S38
S46
S48
46
Unit Range Default
decimal 0 0
seconds 0–254, 255 20
decimal 136, 138 138
decimal 0, 7, 128 7
Description
6 Reserved.
7 An MNP connection is attempted and,
if it fails, a normal modem connection
is established.
Sets the maximum V.34 speed at which the
modem attempts to connect. Attempts an
automode connection. If N0 is active,
connection is attempted at the most
recently sensed serial port speed (+MS=
command settings are updated to the
appropriate values). If N1 is active,
connection is attempted at the highest
possible speed. (+MS= settings are
updated to 11,1,300,3360 to reflect V.34,
automode, 300 bps minimum speed, and
33600 bps maximum speed). Supported
only for compatibility with existing
software; use the +MS= command instead.
Sets the delay between the modem's
receipt of the H command to disconnect
(or high-to-low transition of DTR if the
modem is programmed to follow the
signal), and the disconnect operation.
Applies only to error-correction
connections. This register can be used to
ensure that data in the modem buffer is
sent before the modem disconnects. If S38
is set to a value between 0 and 254, the
modem waits for the remote modem to
acknowledge all data in the modem buffer
before disconnecting. If S38 is set to 255,
the modem does not time out, and
continues to attempt to deliver data in the
buffer until the connection is lost or the
data is delivered.
Enables or disables data compression:
136 Error correction without compression.
138 Error correction with compression.
Enables or disables LAPM negotiation. An
invalid value is treated as a 128 value.
0 Disables negotiation and proceeds
with LAPM.
7 Enables negotiation.
128 Disables negotiation and proceeds at
once with the fallback action specified
in S36. Can be used to force MNP.