Here are all the Knowledge Base articles on phone dialer. Perhaps one of these
will help:
http://support.microsoft.com/default.aspx?scid=kb;en- us;238759 "No Talk Button
in Phone Dialer"
http://support.microsoft.com/default.aspx?scid=kb;en- us;247192 "You Must Enter
Telephone Numbers in Canonical Form in Order to Use Dialing Rules"
http://support.microsoft.com/default.aspx?scid=kb;en- us;254139 "TAPI
Applications May Not Display Video Image Correctly When NetMeeting Is Running"
http://support.microsoft.com/default.aspx?scid=kb;en- us;254146 "Phone Dialer
Error Message Appears When You Try to Publish Multicast Conference Details in a
Mixed-Language Environment"
http://support.microsoft.com/default.aspx?scid=kb;en- us;254148 "Older Voice
Modems with Phone Dialer Cannot Have Modem and Handset Simultaneously off the
Hook"
http://support.microsoft.com/default.aspx?scid=kb;en- us;263820 "Phone Dialer
Does Not Display Windows NT 4.0 Local and Domain User List"
http://support.microsoft.com/default.aspx?scid=kb;en- us;264398 "Audio Record
Options Not Available in Phone Dialer"
http://support.microsoft.com/default.aspx?scid=kb;en- us;266253 "How to Enter
Phone Numbers in Phone Dialer Correctly"
http://support.microsoft.com/default.aspx?scid=kb;en- us;266440 "Phone Dialer
Does Not Connect with Long Delays in the Number"