3Com 1.024.1644-00 manual S34 Bit

		Technical Reference
Register	Default	Function
S34 (Continued)Bit		Value	Result
		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. The modem immediately hangs up when
		DTR drops.
		This option only applies to connections terminated by
		dropping DTR. If the modem receives the ATH command,
		it ignores S38 and immediately hangs up.
S39-S40		Reserved
S41	0	Bit-mapped register setup. To set registers, see
		instructions for S13.
		Bit	Value	Result
		0	1	Reserved.
		1	2	Speakerphone connect message
				override (voice products only).
		2	4	Reserved.
		3	8	Message waiting (voice
				products only).
		4	16	Reserved.
		5	32	Reserved.
		6	64	Reserved.
		7	128	Reserved.
S42	0	Reserved

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