USRobotics 33600, x2/56K user manual Reg Default Function

S23	19	Stores the ASCII decimal code for the XOFF
		character. Valid range is 0–127.
S24	0	Reserved.
Reg	Default	Function
S25	5	Sets the duration, in hundredths of a second,
		that DTR must be dropped so that the
		modem doesn’t interpret a random glitch as a
		DTR loss. (Most users will want to use the
		default; this register is useful for setting
		compatibility with older systems running
		under older operating software.).
S26	0	Reserved.
S27	1	Bit-mapped register. To set the register see
		the instructions for S13.

Bit Value Result

01 Enables ITU-T V.21 modulation at 300 bps for overseas calls; in V.21 mode, the modem

answers	both overseas and domestic
	(U.S. and Canada) calls, but
only	originates V.21 calls.

12 Enables unencoded (non-trellis coded) modulation in V.32

mode;	rarely used part of ITU-T
	Recommendation V.32.

24 Disables V.32 modulation.

38 Disables 2100 Hz answer tone

to	allow two V.42 modems to
	connect more quickly.

416 See next page.

532 See next page.

664 Reserved.

7128 This setting disables the codes and displays the 9600 code instead. The actual rate of the

call	can be viewed on the ATI6
	screen. Used for unusual

Sportster Winmodem 33600 & x2/56K - User's manual 51