pjsua audio problem

[lists@xxxxxxxxxxxxxxxxx (Mailing List SVR)]

Hi,

I'm trying to use pjsua to make a call between two linux box, I'm able 
to hear  audio for few seconds,

I'm using alsa,

here are the logs:

  16:42:53.554    dlg0x1babb4  Received Request msg ACK/cseq=31520 
(rdata0x1ab0bc)
  16:42:53.555       pa_dev.c  Recorder thread started
  16:42:53.556     ec0x198cc0  Prefetching..
  16:42:53.557 os_core_unix.c  Info: possibly re-registering existing thread
  16:42:53.557       pa_dev.c  Player thread started
  16:42:53.558   strm0x1f1c94  GET prefetch_cnt=0/0
  16:42:53.559   strm0x1f1c94  Jitter buffer is bufferring (prefetch=0), 
plc invoked
  16:42:53.566   strm0x1f1c94  Start talksprut..
  16:42:53.567    tsx0x1bb3bc  Request to terminate transaction
  16:42:53.568   strm0x1f1c94  RTP status: badpt=0, badssrc=0, dup=0, 
outorder=0, probation=-1, restart=0
  16:42:53.568   strm0x1f1c94  PUT prefetch_cnt=1/0
  16:42:53.568    tsx0x1bb3bc  State changed from Completed to 
Terminated, event=USER
  16:42:53.569    dlg0x1babb4  Transaction tsx0x1bb3bc state changed to 
Terminated
  16:42:53.570    pjsua_app.c  Call 0 state changed to CONFIRMED
  16:42:53.570    tsx0x1bb3bc  Timeout timer event
  16:42:53.571    tsx0x1bb3bc  State changed from Terminated to 
Destroyed, event=TIMER
  16:42:53.571   tdta0x1bd3a8  Destroying txdata Response msg 
200/INVITE/cseq=31520 (tdta0x1bd3a8)
  16:42:53.572    tsx0x1bb3bc  Transaction destroyed!
  16:42:53.575     ec0x198cc0  Prefetching..
  16:42:53.575   strm0x1f1c94  Jitter buffer starts returning normal 
frames (after 1 empty/lost)
  16:42:53.595     ec0x198cc0  Prefetching..
  16:42:53.615     ec0x198cc0  Prefetching..
  16:42:53.635     ec0x198cc0  Prefetching..
  16:42:53.655     ec0x198cc0  Prefetching..
  16:42:53.656   strm0x1f1c94  jb updated(2), lvl=2 pre=0, size=1
  16:42:53.661     ec0x198cc0  Latency bufferring complete
  16:42:54.207   strm0x1f1c94  VAD re-enabled
  16:42:54.207   silencedet.c  Starting talk burst (level=1773 
threshold=1000)
  16:42:54.225   strm0x1f1c94  jb updated(2), lvl=4 pre=0, size=3
  16:42:54.547   strm0x1f1c94  Jitter buffer empty (prefetch=0), plc invoked
  16:42:54.567   strm0x1f1c94  Jitter buffer starts returning normal 
frames (after 1 empty/lost)
  16:42:54.730   strm0x1f1c94  jb updated(2), lvl=6 pre=0, size=5
  16:42:55.171   strm0x1f1c94  jb updated(1), lvl=5 pre=0, size=3
  16:42:55.587   strm0x1f1c94  jb updated(1), lvl=4 pre=0, size=3
  16:42:55.630   strm0x1f1c94  Jitter buffer empty (prefetch=0), plc invoked
  16:42:56.287   strm0x1f1c94  Jitter buffer starts returning normal 
frames (after 33 empty/lost)
  16:42:56.688   strm0x1f1c94  jb updated(1), lvl=3 pre=0, size=1
  16:42:56.867   strm0x1f1c94  jb updated(2), lvl=4 pre=0, size=3
  16:42:57.296   strm0x1f1c94  jb updated(1), lvl=3 pre=0, size=1
  16:42:57.389   strm0x1f1c94  jb updated(2), lvl=4 pre=0, size=3
  16:42:57.446   strm0x1f1c94  Jitter buffer empty (prefetch=0), plc invoked
  16:42:59.233   strm0x1f1c94  Jitter buffer starts returning normal 
frames (after 87 empty/lost)
  16:42:59.297   strm0x1f1c94  Jitter buffer empty (prefetch=0), plc invoked

any hints?

thanks
Nicola