Intel MD566X manual An, Bn None

56K V.92 Data, Fax, and Voice Chipset

Table 4-2. V.44 / V.42 / V.42 bis and MNP Data Mode Command Descriptions

Note: An asterisk (*) denotes the factory-default setting.

Command	Default		Description
		Set Auto-Reliable Fallback Character: In auto-reliable mode (\N3) with auto-reli-
		able fallback character enabled (\C2), receipt of the fallback character from the line
		during the V.42 detection phase causes the modem to switch to buffer (normal)
%An	13	mode. This allows a remote user with a non-V.42 modem to connect immediately
		with a V.42 modem. A space or carriage return is usually chosen for the fallback
		character.
		n = 0–127 (ASCII character)
		MNP 5 Data Compression Control: This command controls whether the data sent
		during the MNP frames is compressed using MNP Class 5 compression standard.
		MNP 5 data compression can improve throughput by as much as 150%.
%Cn	1	n = 0, 1
		n = 0	No compression
		n = 1*	MNP Class 5 compression
		MNP Block Size: This command specifies the maximum number of data bytes in an
		MNP data frame. A smaller frame size may improve throughput on high-impairment
		(noisy) telephone lines.
\An	3	n = 0–3
		n = 0	Maximum 64 characters
		n = 1	Maximum 128 characters
		n = 2	Maximum 192 characters
		n = 3*	Maximum 256 characters
		Transmit Break: This command causes the modem to send a break (attention sig-
\Bn	none	nal) to the remote modem for a duration specified by ‘n’. When n = 0, the default
		break length is used.

n = 0–9 (units of 100 ms)

66 Intel Confidential Programmer’s Guide