No sound but Connected, log file error:Master/sound Underflow (Compilation)

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What steps will reproduce the problem?
1. make a call.
2. anything work well but the audio.
3.

What is the expected output? What do you see instead?
It should be able to hear audio, but nothing.

What version of the product are you using? On what operating system?
Siphon-trunk-r648 & pjsip1.8-trunk
Mac OS 10.6.4
iPhone SDK3.1.2
iPhone 2g with iOS3.1.2

Please provide any additional information below.
And I found no sound because the " Master/sound  Underflow, buf_cnt=0, will 
generate 1 frame" error in the people log file.
here is my log file, but it under the 
folder:/private/var/mobile/Documents/log.txt.

Original issue reported on code.google.com by cdlmagi...@gmail.com on 17 Jan 2011 at 9:14

Attachments:

• log.txt

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Original comment by samuelv0...@gmail.com on 6 Mar 2011 at 11:28

• Changed title: No sound but Connected, log file error:Master/sound Underflow (Compilation)

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Original comment by samuelv0...@gmail.com on 28 May 2011 at 8:08

• Added labels: Type-Other
• Removed labels: Type-Defect