Multi-Tech Systems Modem Module MT3334SMI - Manual (Page 29)

Chapter 2 - AT Commands, S-Registers, and Result Codes
MT3334SMI 29
S43 decimal 0–1 1 For testing and debugging only. Enables/disables V.32bis start-up auto mode
operation. 0 = disable; 1 = enable.
S48 decimal 7 or 128 7 Enables (7) or disables (128) LAPM negotiation. The following table lists the S36
and S48 configuration settings for certain types of connections.
S48=7 S48=128
LAPM or async Async
LAPM or hangup Do not use
LAPM, MNP, or aysnc
LAPM, MNP, or hangup MNP or hangup
MNP or async
S36=0, 2
S36=1, 3
S36=4, 6
S36=5, 7
S89 seconds 0, 5–25510 Sets the length of time in the off-line command mode before the modem goes into
standby mode. A value of zero prevents standby mode; a value of 1–4 sets the
value to 5.