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  • FreeSwitch工作的3种模式

    <Category: FreeSwitch> 查看评论


    • Default: media flows through FS, full processing options
    – RTP proxied by
    – FreeSWITCH controls codec negotiation
    – If endpoints agree on same codec, no transcoding is performed
    – All features enabled – recording, DTMF interception, etc, etc
    http://wiki.freeswitch.org/wiki/Proxy_Media
    • Proxy: media flows through FS, no media processing options
    – RTP proxied by FreeSWITCH (c= modified, that’s it)
    – FreeSWITCH has no control or even understanding of other SDP parameters (pass through)
    – Endpoints *MUST* agree on same codec because FreeSWITCH can’t help them
    – Virtually no features available
    如何使用:bridge之前使用参数:proxy_media=true
    2013-01-05 19:14:37.575568 [ERR] switch_core_io.c:1148 Codec PROXY PASS-THROUGH encoder error!
    需要设置

    http://wiki.freeswitch.org/wiki/Bypass_media
    • Bypass: media flows around FS directly between endpoints, no media processing options
    – RTP *NOT* proxied by FreeSWITCH
    – FreeSWITCH has no control over anything SDP related – it’s completely pass through from one leg to next (including c=)
    – Endpoints must agree on same codec because FreeSWITCH doesn’t even see the media or SDP
    – Virtually no features available
    如何使用:bridge之前设置,bypass_media=true

    sip端必须可以互相可见,所以NAT下的不行,编码必须一致

    源文档

    #bypass_media=true,接通之后,服务器流量没有变化,但是没有视频和声音,测试SIP客户机都在NAT内网,所以不通
    originate {bypass_media=true,bypass_media_after_bridge=true,origination_caller_id_number=1111111111,effective_caller_id_number=222222222,ignore_early_media=true}user/1001 &bridge(user/1002)

    A.#proxy_media=true,两边编码必须一致 ,
    originate {proxy_media=true,late_negotiation=true,origination_caller_id_number=1111111111,effective_caller_id_number=222222222,ignore_early_media=true}user/1001 &bridge(user/1002) inline
    呼叫失败:提示,2013-01-05 19:48:32.055564 [ERR] switch_core_io.c:1148 Codec PROXY PASS-THROUGH encoder error!
    已经设置过:conf/sip_profiles/internal.xml

    通过SIP status查看:
    late-neg
     true 
    proxy-media
     true 

    B.去掉乱七八糟的选项,直接bridge
    originate user/1001 &bridge(user/1002)
    呼叫成功,H263编码视频通过,声音正常,但是有马赛克

    #客户端换新版本imsdroid,h264测试通过,但是花屏严重,应该是H264分组传输过程中丢包了,估计网络问题,如何解决,是个问题啊
    研究下 http://www.linphone.org/eng/download/packages/linphone.html

    本文来自: FreeSwitch工作的3种模式

    
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