[pjsip] Audio breaks up, & is heared in bursts

SSTPL (Design) design at spectrumsolutions.in
Sun May 4 02:49:07 EDT 2014

   When I go for a loop back of my mic with the speakers through pjsua I hear the audio in bursts & then there is a silent period.  I am using Win 7 OS. The same when I do in with windows sound settings it works fine. 
here is the dump of the audio call
-05-04 12:11:30.101 pjsua_app_comm  .....
  [DISCONNCTD] To: sip:4444 at sip2sip.info;tag=cMVs48ZEbmaPXpvL54zJJtfieghEy.hO
    Call time: 00h:00m:02s, 1st res in 401 ms, conn in 2522ms
    #0 audio speex @32kHz, sendrecv, peer=-
       SRTP status: Not active Crypto-suite:
       ICE role: Unknown, state: Candidate Gathering, comp_cnt: 2
       RX pt=99, last update:00h:00m:02.562s ago
          total 137pkt 10.1KB (15.6KB +IP hdr) @avg=27.8Kbps/42.9Kbps
          pkt loss=0 (0.0%), discrd=0 (0.0%), dup=0 (0.0%), reord=0 (0.0%)
                (msec)    min     avg     max     last    dev
          loss period:   0.000   0.000   0.000   0.000   0.000
          jitter     :   0.000   1.733   2.281   1.937   0.385
       TX pt=99, ptime=20, last update:00h:00m:02.569s ago
          total 145pkt 10.7KB (16.5KB +IP hdr) @avg=29.4Kbps/45.4Kbps
          pkt loss=0 (0.0%), dup=0 (0.0%), reorder=0 (0.0%)
                (msec)    min     avg     max     last    dev
          loss period:   0.000   0.000   0.000   0.000   0.000
          jitter     :   0.000   0.000   0.000   0.000   0.000
       RTT msec      :   0.000   0.000   0.000   0.000   0.000
    #1 video deactivated

    Can anybody point out what is the problem. I have tried all that is on the pjsip site about audio problems, but dosent work. Also when I go for the boost of the mic level to +40dB in windows setting then the burst goes off but I hear a loud background noise continuously with varying loudness.

Mohsin Z Barbhaiwala,
Design Dept.,
Spectrum Solutions & Technologies Pvt. Ltd.
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