USRobotics x2/56K, 33600 Modem does not, Respond when, Terminal mode, you, Send AT commands

The modem does not	Check that the COM port to which the
respond when, in	modem is connected is properly
terminal mode, you	declared. Check the IRQ configuration in
send AT commands.	the communications software or in the
	Windows Control Panel. Check that
	the application is in terminal mode.
	If none of the preceeding solutions solve
	the problem, it means that the modem is
	certainly in conflict at the COM port/IRQ
	level. Begin the installation procedure in
	the Installation chapter. If you change
	the COM/IRQ configuration, don't forget
	to make these changes in the application
	as well.
The modem cannot	Check the connection to the telephone
make a call and sends	line. It could be that the modem cannot
the message ‘NO DIAL	detect the dial tone.
TONE’.	Try the ATX3DT<phone number> dial
	sequence.
The modem cannot	A pause in dialing may be needed to
make a call when	allow time to connect to the outside
connected to a PBX.	PSTN line. An example of dialing an
	outside line is shown below, where a 9 is
	used to access the outside line and a
	comma causes a pause in the dialing
	sequence.
	$7'￿￿￿￿￿￿￿￿￿￿
	The value of register S8 may be
	adjusted to give the required delay, or
	use a W in place of a comma. The W
	causes the modem to wait for a second
	dial tone before continuing and may
	result in faster dialing.

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