VisorCentral.com (http://discussion.visorcentral.com/vcforum/index.php)
- How To / Troubleshooting (http://discussion.visorcentral.com/vcforum/forumdisplay.php?forumid=2)
-- 3500 Dials, but no cigar. (http://discussion.visorcentral.com/vcforum/showthread.php?threadid=11651)

I have been able to get the 3500 to dial out using the above setup.

The null modem is the important part. Here is my modem screen setup...

Standard
14,400
Off
Off
Other
AT&FX4

When I hit connect, it dials, then sits, then hangs up and never negotiates to the Visor.

I do have to power off/on the phone between tries, otherwise the visor keeps retrying and never dials out...