Multitech MULTI MODEM II MT5600BA - Manual (Page 56)

4 AT Commands, S-Registers, and Result Codes
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MultiModemII User Guide
S36 decimal 0–7 7 LAPM Failure Control. Specifies the fall-
back action to take in the event of an LAPM
negotiation failure. These fallback options
are initiated immediately upon connection
if S48 is set to 128. If an invalid number is
entered, S36 acts as if the default value has
been entered. (See S48.)
0 Modem disconnects.
1 Modem stays online and a direct mode
connection is established.
2 Reserved.
3 Modem stays on-line and a normal
mode connection is established.
4 An MNP connection is attempted and
if it fails, the modem disconnects.
5 An MNP connection is attempted and
if it fails, a direct mode connection is
established.
6 Reserved.
7 An MNP connection is attempted and
if it fails, a normal modem connection
is established.
S37 decimal 0–12 0 Sets the maximum V.34 speed at which the
modem attempts to connect. The default val-
ue 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 appro-
priate values). If N1 is active, connection is
attempted at the highest possible speed.
(+MS= settings are updated to 11,1,300,33600
to reflect V.34, automode, 300 bps minimum
speed, and 33600 bps maximum speed). Sup-
ported only for compatibility with existing
software; use the +MS= command instead.
S38 seconds 0–254, 255 20 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 pro-
grammed 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 ac-
knowledge 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.
Register Unit Range Default Description