Using a serial data cable under WIndows XP trying to dial my ISP's data
number the phone shows a brief message "calling 7606622" for about 1 second
and then I get the error message on the computer.

The "Wait for dial tone" box is greyed out in the modem settings for
"Ericsson T39 Cable Modem". THe modem drivers are from the Ericsson site. I
can query the modem successfully via this cable. Searched the web for a week
and hours and cannot find any solution beyond a post that said you have to
increase how long it tries for, but cannot find how. Am I barking up the
wrong tree? Thanks for any suggestions.

See More: T39m and Dial-Up