[Asterisk-Users] Ahead SIPPS and Asterisk

[Carlton J. O'Riley]

Has anyone gotten Ahead's SIPPS softphone to work with Asterisk?  I get it
to register, but when I dial into a number as soon as voice is to be
connected I get a Warning 399 "SDP body missing" message and then a BYE
disconnecting the call.  The setup I have works great with Xten's x-pro, but
can't get it to work with SIPPS.  Any hints?