[Freeswitch-users] help about the rtp port.

congxin zhao congxin.zhao at gmail.com
Wed Mar 25 18:49:13 PDT 2009


Hi Brian,
Thanks for you response.
After doing research, the two endpoints(uac, uas) wants to speak with
different media format, that cause the freeswitch reject the rtp flow.

But could you give me an detailed explain on the meaning of nbound-bypass-media
and inbound-proxy-media?

Does nbound-bypass-media mean that rtp flow directly from endpoint uac to
endpoin uas, and inbound-proxy-media mean that rtp flow from endpoint
uacfirst arrive freeswitch, and freeswitch forward it to the endpoint
uas?

Thanks,
-Congxin


2009/3/26 Brian West <brian at freeswitch.org>

> Zero for the port means something please provide a complete sip trace.
> /b
>
> On Mar 25, 2009, at 5:52 AM, congxin zhao wrote:
>
> Hi,
>
> I meet a issue about the rtp port. The media port value in the sdp of SIP
> 200 OK which freeswitch internal sends to ua is always 0, so the media
> forward is always wrong.  What could cause this problem possibly?
>
> No matter I set
> <param name="inbound-bypass-media" value="true"/>
> or
> <param name="inbound-proxy-media" value="true"/>
> The problem always showes.
>
> Does the following rtp-ip and ext-rtp-ip set correct? In external.xml, I
> set both rtp-ip and ext-rtp-ip  as $${external_rtp_ip}, is that correct? I
> am not clear about this two variables in the external.xml and internal.xml
>
> external.xml:    <param name="rtp-ip" value="$${external_rtp_ip}"/>
> external.xml:    <param name="ext-rtp-ip" value="$${external_rtp_ip}"/>
>
> internal.xml:    <param name="rtp-ip" value="$${internal_rtp_ip}"/>
> internal.xml:    <param name="ext-rtp-ip" value="$${external_rtp_ip}"/>
>
>
> Thanks,
> -Congxin
>
>
>
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