At &F

Note 1: The first two lines in the table are likely to be the most valuable.

Note 2: In the command strings shown in the table that follows, the character after “N” is zero, not the letter “O.”

Note 3: Some commands vary because of the processor used in the faxmodem. The use of Lucent- or Rockwell-based processors is indicated on the faxmodem box. You can also find out the proc- essor type in a terminal emulator program by typing ATI3 and pressing Enter. If the result- ing response contains 207, the processor is Lu- cent-based; if the response contains 201, the processor is Rockwell-based.

To force the different communication speeds	Type these commands and
(speeds are maximums; actual speed depends	press Enter
on line conditions and other factors)

Negotiate speed and protocol		AT &F
(default setting)

Negotiate speed only, do not use protocol	AT \N0

To force protocol	AT \N3

	Lucent		Rockwell

Dualmode (V.90 or K56flex)—56000 bps	AT S109=1		(default)
	(default)

K56flex only (disable V.90)—56000 bps	AT S109=0		AT +MS=56,0

V.90 only (disable K56flex)—56000 bps	AT S109=2		AT +MS=12,0

Disable V.90 and autorate on V.34—33600 bps	AT S38=0

V.34—33600 bps	AT S37=19		AT +MS=11

V.32bis—14400 bps	AT S37=11		AT +MS=10

V.32—9600 bps	AT S37=9		AT +MS=9

2400 bps	AT S37=6		AT +MS=2

1200 bps	AT S37=2		AT +MS=1

22	Quick Start and Reference Guide