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Windows Mobile 6.1

Ricardo Pereira

Tue, Oct 13, 2009 10:26 AM

I've been working on a softphone application with pjsip on a Windows
Mobile 6.1 Professional phone, Samsung Omnia i900. I've been testing
with X-Lite.

Overall it works great but there's a lot of latency on receiving
audio, generally over 600ms, sometimes 800ms. Sending audio has almost
no latency at all. I've even tried between two X-Lite softphones and
theres no latency, so it's not the network (wi-fi for both mobile-pc
and pc-pc).

I've tried several configurations but I still haven't been able to
reduce much the latency. My objective is between 300ms and 400 ms.

My configurations for pjlib and pjmedia are in attachment.

I'd appreciate any help if possible.

Thanks in advance

Hi I've been working on a softphone application with pjsip on a Windows Mobile 6.1 Professional phone, Samsung Omnia i900. I've been testing with X-Lite. Overall it works great but there's a lot of latency on receiving audio, generally over 600ms, sometimes 800ms. Sending audio has almost no latency at all. I've even tried between two X-Lite softphones and theres no latency, so it's not the network (wi-fi for both mobile-pc and pc-pc). I've tried several configurations but I still haven't been able to reduce much the latency. My objective is between 300ms and 400 ms. My configurations for pjlib and pjmedia are in attachment. I'd appreciate any help if possible. Thanks in advance

Benny Prijono

Wed, Oct 14, 2009 1:00 AM

Hi,

latency on Windows Mobile is an open issue at the moment. It seems to
depend on what device you're running it on as it gives good latency on
some devices, and horrible ones on the others. Please see the report
in http://trac.pjsip.org/repos/ticket/783. So unfortunately no
solution at the moment, as there's really not much other things to
tweak in WM audio area.

Cheers
Benny

On Tue, Oct 13, 2009 at 5:26 PM, Ricardo Pereira riksanper@gmail.com wrote:

I've been working on a softphone application with pjsip on a Windows
Mobile 6.1 Professional phone, Samsung Omnia i900. I've been testing
with X-Lite.

I've tried several configurations but I still haven't been able to
reduce much the latency. My objective is between 300ms and 400 ms.

My configurations for pjlib and pjmedia are in attachment.

I'd appreciate any help if possible.

Thanks in advance

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Hi, latency on Windows Mobile is an open issue at the moment. It seems to depend on what device you're running it on as it gives good latency on some devices, and horrible ones on the others. Please see the report in http://trac.pjsip.org/repos/ticket/783. So unfortunately no solution at the moment, as there's really not much other things to tweak in WM audio area. Cheers Benny On Tue, Oct 13, 2009 at 5:26 PM, Ricardo Pereira <riksanper@gmail.com> wrote: > Hi > > I've been working on a softphone application with pjsip on a Windows > Mobile 6.1 Professional phone, Samsung Omnia i900. I've been testing > with X-Lite. > > Overall it works great but there's a lot of latency on receiving > audio, generally over 600ms, sometimes 800ms. Sending audio has almost > no latency at all. I've even tried between two X-Lite softphones and > theres no latency, so it's not the network (wi-fi for both mobile-pc > and pc-pc). > > I've tried several configurations but I still haven't been able to > reduce much the latency. My objective is between 300ms and 400 ms. > > My configurations for pjlib and pjmedia are in attachment. > > I'd appreciate any help if possible. > > Thanks in advance > > _______________________________________________ > Visit our blog: http://blog.pjsip.org > > pjsip mailing list > pjsip@lists.pjsip.org > http://lists.pjsip.org/mailman/listinfo/pjsip_lists.pjsip.org > >