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4 AT Commands, S-Registers, & Result Codes
42
MultiModemZBA-V-V92 User Guide
16 46666 bps
17 48000 bps
18 49333 bps
19 50666 bps
20 52000 bps
21 53333 bps
22 54666 bps
23 56000 bps
S42
decimal 0–1 1 Enables/disables the 56K auto rate. When
56K auto is disabled, fallback to V.34 is also
disabled. 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, 5–255 0 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.
S108
decimal 0–3, 6, 7 6 Selects the 56K digital loss if using the
modem thru a PBX line. The default value is
-6 dB loss, the value used when calling from
a typical POTS line long distance.
Value Digital loss
0 -0 dB digital loss, no robbed-bit
signaling
1 -3 dB PBX digital loss
2 -2 dB digital loss
3 -3 dB digital loss
6 -6 dB digital loss
7 -0 dB digital loss with robbed-bit
signaling
Register Unit Range Default Description