Multi-Tech Systems MT5634ZLX 2, MT5634ZLXE-T manual MT5634ZLX/E

Chapter 3 - AT Commands, S-Registers, and Result Codes

Upstream data rates

Upstream V.90 data rates are 4800 to 33,600 bps in 2400 bps increments.

S48=	7, 128		S48 sets the LAPM error control and feature negotiation:
			S48=7	Negotiation enabled
			S48=128	Negotiation disabled. Force
				immediate fallback options
				specified in S36
			S36=0 or 2, and S48=7	LAPM or hang up
			S36=0 or 2 and S48= 128	Do not use
			S36=1 or 3, and S48=7	LAPM or async
			S36=1 or 3, and S48=128	Async
			S36=4 or 6, and S48=7	LAPM, MNP or hang up
			S36=4 or 6, and S48=128	MNP or hang up
			S36=5 or 7, and S48=7	LAPM, MNP or async
			S36=5 or 7, and S48=128	MNP or hang up
S89=	0, 5 - 60 030		S89 sets the Sleep Mode control timer. Specify the number of
			seconds of inactivity (no character sent from DTE, no RING) in the
			off-line command state before the modem places itself into standby
			mode. A value of “0” prevents standby mode. If a number between 1
			and 4 is entered for this register, it will set the value to 5.
S109	0--2	1	Sets one of three 56K operating modes:
			K56flex mode, V.90 mode, or Auto-mode. S109=2 forces V.90
			connections for testing purposes, etc. S109 sets the 56K operating
			mode as shown below:

0 = V.90 disabled

1 = K56flex or V.90 (Dual mode enabled)

2 = V.90 only (K56flex disabled).

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