> HI all,
>
>
> We are using linphone source for our SIP phone development on TI DM365
> SOC. I have written filters for video encoding and decoding which uses
> TI's hardware encoder and decoder chip for video enc/dec operation and
> the rtp stack I am using as is. The audio part is same as present in
> linphone wiht G711 codec.
>
>
> For video My graph is very simple:
>
>
> cap_enc filter------> rtpsend
> rtprecv----------------->decode_display filter
>
>
> where cap_enc and decode_display filters are developed by us.
> We have successfully tested the sytem in LAN (Local Area
> Network)conditions where there is no limit on upload/download
> speed.and we have absolutely no problems in LAN testing conditions.
> But we are facing issues while making calls on WAN via proxy. We are
> getting video in only one direction. But nothing in other direction.
> The issue we are facing is linphone is not able to send RTP packets on
> other side.
> -- Our test set up consist of one unit connected to 1 Mbps broadband
> and the other one to a 2 Mbps leased line connection.
> -- The video resolution we are using is 4-CIF
> -- tried to experiment with jitt_compensation but nothing happened
> other than increase in delay
> -- Also tried to increase the video compression by relaxing the
> quantization parameter..
> -- The video decode and display is successful on the unit which
> receives the call and this is consistent all the time. We dont get any
> successful decoding and display on the unit making the call.
> -- RTP statistics showing that no of rtp packtes successfully
> delivered to the application is very low compared to the total number
> of packets received.
>
>
>
>
> Any suggestion on what could possibly go wrong while switching from
> LAN to WAN.
>
>
> Thanks,
> Abhishek Ranjan
>
>
> _______________________________________________