Multi-tech-systems MT5634ZBA User Manual download pdf (Page 38)

Chapter 4 - AT Commands, S-Registers, Result Codes

MultiModemDID User Guide

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

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Multi-tech-systems MT5634ZBA User Manual Page 38

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