[asterisk-dev] RTCP RTPQOS on two SIP bridged channels

[Martin Vít]

John Todd wrote:
> It is probably not better to force your traffic (or media) through 
> some other device in order to collect metrics.  I can't see in any 
> circumstance where that would be 'better', 'easier', or would have any 
> significant value.
absolutly right.

Blitzrage on irc gave me idea how to get both RTCP stats at the end of 
two bridged SIP channels. Although i dont like this method because of 
use Local channel, it works. What would be nice is simple method, how to 
grab this stats from both channels at once in one h extension.

-----------

exten => xxx,1,Dial(Local/context1....)
exten => h,1,set(CDR(qos1)=CHANNEL(rtpqos,....)

[context1]

exten => xxx,1,Dial(SIP/....)
exten => h,1,set(CDR(qos2)=CHANNEL(rtpqos,...)

-----------

>
> There is a misnomer in the original message which may be causing 
> confusion here: "SIP traffic" isn't what you're pushing through the 
> "proxy".  In order to observe RTCP messages, you would have to push 
> all of your RTP traffic through some other proxy and extract the 
> real-time messages.  SIP is signalling, RTP is media (including 
> RTCP.)  It seems that Asterisk would be a more efficient place to do 
> this if you were already looking at the media as a B2BUA, and if 
> Asterisk was NOT a B2BUA, then you're not going to get the information 
> unless it's handed back as part of a SIP BYE  (as some Cisco devices do.)
>
> If the original commenter REALLY meant SIP, then I assume this draft 
> (vq-rtcpxr) has been implemented on equipment that I've never heard of:


>
>   http://www.tools.ietf.org/html/draft-johnston-sipping-rtcp-summary-08
>
>
> JT
>
>
>
>
> At 11:59 AM -0400 2007/5/30, Alex Balashov wrote:
>> On Tue, 29 May 2007, Andrew Kohlsmith wrote:
>>
>>> Alternatively force all SIP traffic through a proxy that does this.
>>
>>   That would almost certainly be easier and more portable.
>>
>> -- 
>> Alex Balashov
>> Evariste Systems
>> Web    : http://www.evaristesys.com/
>> Tel    : +1-678-954-0670
>> Direct + +1-678-954-0671
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-- 
Martin Vít
LAM plus s.r.o.
http://www.lam.cz/
Tel.: 605 267 610