[pjsip] a question about voice delay

太田勇樹 yuuki_oota at in4s.co.jp
Wed Nov 7 04:36:40 EST 2007


Hi, list

I am using the latest PJSIP(pjproject 0.7.0) on Windows Mobile 6 platform.
It seems that there is a big delay (300ms-1sec) when talking from a
softphone to another one.

Although I tried these three points according to
http://www.pjsip.org/trac/ticket/323, it has not improved.

1.change conference.c

2.disable ACE
#define PJMEDIA_HAS_SPEEX_AEC 0
#define PJMEDIA_ECHO_SUPPRESS_FACTOR 1

3.change jitter buffer's parameters
app_config.media_cfg.jb_max = 80;
app_config.media_cfg.jb_init = 40;
app_config.media_cfg.jb_min_pre = 20;
app_config.media_cfg.jb_max_pre = 80;

Test Environment:
PDA1(PJSUA)--WLAN(11g)--WLANAP--openser
               |
PDA2(PJSUA)----|

PDA spec:
CPU PXA270 416MHz
Memory 64MB

Do you have any idea about the problem?

Regards,



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