[SIPForum-discussion] Record-Route

Bryan McCaffrey bryan.mccaffrey at gmail.com
Wed Feb 13 17:06:36 UTC 2013


I can think of a number of uses. Billing, troubleshooting but also call
control. Keep the signaling and media flowing through a B2BUA for instance.
On Feb 13, 2013 12:00 PM, "Mickael Marrache" <mickaelmarrache at gmail.com>
wrote:

> Hi,
>
> The assumption here is that the UAs conform to RFC3261. But, a UA may also
> ignore the Record-route headers and exchange future messages directly. So,
> a SIP server cannot force UAs to exchange messages through it, it can also
> ask them to do so. One should be careful when depending on this mechanism.
>
> What do you think? For which purposes these headers are used in the
> industry?
>
> Mickael
>
> Le 31 בינו 2013 à 07:00, madhumanjusha at integramicro.com a écrit :
>
> > Hello Kumar,
> >
> > Below, client1 and client2 are depending on sip server(proxy say) as they
> > are not known to each other,so flow will be
> >
> > client1-invite -------->sip server-invite--------->client2
> > .
> > .
> > .
> >
> > client1 <---------------200OK-sip server<---------200ok-client2
> >
> > As client1 now familiar with client2's ip address in 200ok,it sends ACK
> > directly to client2 bypassing sip server.
> > client1 -ACK ------------------------------------------>client2
> >                           RTP
> > <---------------------------------------------------------->
> > client1-BYE--------------------------------------------->client2
> >
> > To avoid such bypass,sip server should add Record-route header ,so that
> it
> > can be till the session ends.....
> > client1-ACK----------->sip server-ACK------------->client2
> >
> >                        RTP
> > <------------------------------------------------------->
> >
> > client1-BYE----------->sip server-BYE------------->client2
> >
> > If any queries feel free to discuss.
> > Thanks,
> > Manjusha.
> >
> > On Wed, Jan 30, 2013 at 6:10 PM, tapender kumar <tapender5002 at gmail.com>
> > wrote:
> >
> >    Dear All,
> >    Can you describe me about Record-Route.Why we are using Record route?
> >    --
> >
> >    With Regards,
> >    Tapender Kumar
> >
> >
> >
> >
> >
> >
> >
> >
> >    _______________________________________________
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> >
> >
> >
> >
> > On Wed, January 30, 2013 7:40 am, tapender kumar wrote:
> >> Dear All,
> >>
> >>
> >> Can you describe me about Record-Route.Why we are using Record route?
> >>
> >>
> >> --
> >>
> >>
> >> With Regards,
> >> Tapender Kumar
> >> _______________________________________________
> >> This is the SIP Forum discussion mailing list
> >> TO UNSUBSCRIBE, or edit your delivery options, please visit
> >> http://sipforum.org/mailman/listinfo/discussion
> >> Post to the list at discussion at sipforum.org
> >>
> >>
> >
> >
> > Thanks & Regards,
> > Manjusha A.
> > Integra Micro Software Services (P) Ltd.
> >
> >
> >
> > _______________________________________________
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> > TO UNSUBSCRIBE, or edit your delivery options, please visit
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> > Post to the list at discussion at sipforum.org
>
> _______________________________________________
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