HP 2548AP, 2500, 2185AF, 2158, 2505EA, 2510AP, 2508EA, 2156EA, 2117AP, 2116AP, 2114AP, 2115AP +DS44 = a,b

Reference Information

Conexant AT Commands (Advanced Users Only) (Continued)

Command (Conexant)

+DS=a,b,c,d Controls V.42 bis data compression function (b, c, and d are optional):

■a sets direction(s) of data compression function, seen by DTE: 0=negotiated, no compression; 3=both directions (default).

■b=0 specifies modem does not disconnect if V.42bis is not negotiated by remote modem as specified by a.

■c sets maximum number of dictionary entries (2048) that should be negotiated.

■d sets maximum string length (32 bytes) to be negotiated.

+DS44=a,b,	Controls V.44 data compression function (b, c, d, e, f, g, h, and i
c,d,e,f,g,h,i	are optional):
	■ a sets direction(s) of data compression function, seen by
	DTE: 0=negotiated, no compression; 1=transmit only;
	2=receive only; 3=both directions (default).
	■ b specifies whether modem disconnects if V.44 is
	not negotiated by remote DCE as specified in a: 0=do not
	disconnect (default), 1=disconnect.
	■ c: 0=stream method (default), 1=packet method,
	2=multi-packet method.
	■ d (256 to 2048) sets maximum code words to be negotiated
	in transmit direction (default=2048).
	■ e (256 to 2048) sets maximum code words to be negotiated
	in receive direction (default=2048).
	■ f (32 to 255) sets maximum string length to be negotiated in
	transmit direction (default=32).
	■ g (32 to 255) sets maximum string length to be negotiated
	in receive direction (default=32).
	■ h (2048 to 4096) sets maximum size of history buffer to be
	negotiated in transmit direction (default=4096).
	■ i (2048 to 4096) sets maximum size of history buffer to be
	negotiated in receive direction (default=4096).

7–4 Reference Guide