asterisk users - May 2005 - Hang up error: Didn't get a frame from channel

I'm using EyeBeam from xten, and whenever I call another user, the
callee phone rings but my SIP phone immediately hangs up.  The other end
keeps on ringing but when the callee answers, there is no sounds.
 
I have found the "Didn't get frame from channel" error occurring
in each
such call.  What does this mean?  How can I fix it?
 
-Mike-
 
 
May 15 22:31:10 DEBUG[4792]: sip_answer(SIP/2433-9716)
May 15 22:31:10 VERBOSE[4792]:     -- Attempting native bridge of
SIP/2433-9716 and SIP/2463-2f7a
May 15 22:31:10 DEBUG[4792]: Got RTCP report of 84 bytes
May 15 22:31:10 DEBUG[4792]: Ooh, format changed from unknown to ulaw
May 15 22:31:10 DEBUG[4792]: Got RTCP report of 118 bytes
May 15 22:31:15 DEBUG[4792]: Got RTCP report of 84 bytes
May 15 22:31:17 DEBUG[4792]: Didn't get a frame from channel:
SIP/2463-2f7a
May 15 22:31:17 DEBUG[4792]: Bridge stops bridging channels
SIP/2433-9716 and SIP/2463-2f7a
May 15 22:31:17 DEBUG[4792]: Hanging up channel 'SIP/2463-2f7a'
May 15 22:31:17 DEBUG[4792]: sip_hangup(SIP/2463-2f7a)
May 15 22:31:17 DEBUG[4792]: update_user_counter(2463) - decrement
outUse counter
May 15 22:31:17 DEBUG[4792]: Exiting with DIALSTATUS=ANSWER.
May 15 22:31:17 DEBUG[4792]: Exiting with ANSWERTIME=7.
May 15 22:31:17 DEBUG[4792]: Spawn extension (macro-stdexten,s,4) exited
non-zero on 'SIP/2433-9716' in macro 'stdexten'
May 15 22:31:17 DEBUG[4792]: Spawn extension (menuinternal,2460,1)
exited non-zero on 'SIP/2433-9716'
May 15 22:31:17 DEBUG[4792]: Launching 'Goto'
May 15 22:31:17 VERBOSE[4792]:     -- Executing Goto("SIP/2433-9716",
"menuinternal|i|1") in new stack
May 15 22:31:17 VERBOSE[4792]:     -- Goto (menuinternal,i,1)

 
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