Can someone offer a suggestion as to why I can no longer
"talk" with another machine.  It used to work (maybe a year
ago). Now, if I try "talk  id@blah"  the other user gets
the message that a call is coming through, but we can't
connect.  Likewise, if they try to contact me, I get beeped
with "respond talk/old ....." but we never connect.
 
Thanks.
 
Heather