Specifications | Western Telematic RMM-288 guide

RMM Rack Mount Modem; User's Guide
S34	0	Bit-mapped register setup for 28.8 modems only. To set registers, see
		instructions for S13.
		Bit	Value	Result
		0	1	Disable 8S-2D trellis encoding.
		1	2	Disable 16S-4D trellis encoding.
		2	4	Disable 32S-2D trellis encoding.
		3	8	Disable 64S-4D trellis encoding.
		4	16	Disable nonlinear coding.
		5	32	Disable TX level deviation.
		6	64	Disable Pre-emphasis.
		7	128	Disable Pre-coding.
S35 - S37	---	Reserved
S38	0	Sets an optional delay (in seconds) before a forced hang-up and
		clearing of the Transmit buffer when DTR drops during an ARQ call.
		This allows time for a remote modem to acknowledge receipt of all
		transmitted data before it is disconnected.

When set at the default (0), the modem immediately hangs up when

DTR drops.

This option applies only to connections terminated by dropping DTR. If the modem receives the ATH command, it ignores S38 and immediately hangs up.

7. Specifications

Compatibility:

ITU-T V.34+: 33.6 Kbps

ITU-T V.34: 28.8 Kbps

ITU-T V.32 bis: 14.4 Kbps

ITU-T V.32: 9600 bps

ITU-T V.22 bis: 2400 bps

Bell: 212 / V.22, 103 / V.21

Supports: V.42 / MNP 2-4 Error Control V.42 bis / MNP 5 Data Compression.

Command Set: Industry Standard "AT" Commands

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