Is there anything special I need to know to get pppd to work using an
external 3Com Impact IQ ISDN modem?  It always appears to connect -- get's
the local and remote IP addresses -- and I can send packets out, but
nothing gets back.  The ISP claims it's my configuration.  Since I can get
everything to work when using a normal modem, I have to assume it's
something about the ISDN modem ... any thoughts?

  /\---/\  Eric J Fox
 /  o o  \ http://fox.phoenix.az.us
 \.\   /./ ---------------------------
    \@/    "Of course it runs NetBSD."