Sound problem (abnormal tone)

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Hi,

I am trying pjsip via pjsua(svn version,
pjsip-apps/bin/pjsua-arm-unknown-none
--config-file=../pjproject-svn/test.cfg  --ec-tail=0) on an ARM board,
which configures with ./aconfigure --host=arm CFLAGS='-O2 -msoft-float
-mcpu=arm926ej-s -march=armv5te' --disable-floating-point), and the
sound is abnormal.

1.1 When pjsua talked with another user agent (express talk on
windows), the tone is very low with a terrible delay.
1.2 When windows user agent talked with pjsua, the tone is very high
without delay.

I had followed the troubleshooting checklists in
http://trac.pjsip.org/repos/wiki/sound-problems, and summarized them
as following,
2.1 The speaker works properly  except a static noise when
looping-back microphone to speaker device
2.2 Playing a wav file is also fine.
2.3 The call qualty
>>> dq
 23:10:20.897    pjsua_app.c
 [CONFIRMED] To: "fcwu1104"
<sip:1312627958 at 85.31.197.7>;tag=1df7bedc902385534bfa1720e43ba2c3
   Call time: 00h:00m:31s, 1st res in 2463 ms, conn in 2820ms
   SRTP status: Not active Crypto-suite: (null)
   #0 PCMU @8KHz, sendrecv, peer=85.31.197.7:56952
      RX pt=0, stat last update: 00h:00m:02.200s ago
         total 1.5Kpkt 248.1KB (310.2KB +IP hdr) @avg=62.5Kbps/78.2Kbps
         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   0.917  20.375   1.875   3.068
      TX pt=0, ptime=20ms, stat last update: never
         total 3.1Kpkt 507.5KB (634.4KB +IP hdr) @avg 128.0Kbps/160.0Kbps
         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
2.4 CPU utilization is around 20% (by top)
2.5 I recorded the audio from pjsua to UA on windows
http://speed.cis.nctu.edu.tw/~fcwu/pub/output1.wav. The result is as
similar to I described at 1.1. ( I said "Hello" and "PJSIP" on this
audio)
The audio from UA on windows to pjsua
http://speed.cis.nctu.edu.tw/~fcwu/pub/output.wav. It is different as
I described at 1.2. No high tone happened. (!!??)

Could anyone tell me how to fix these sound problems or give me a direction.

Thanks a lot.

Best Regards,
fcwu



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