Hi,
I understood your scenario in the following way, If I misunderstood please
reply back with detailed information. so that I can help you better.
scenario:-
1. A's IP Address = 1.1.1.1
2. Media GW for A will be = 1.1.1.2
3. C's IP Address = 2.2.2.1
4. Media GW for B will be = 2.2.2.2
5. A will send INVITE with SDP like c=1.1.1.1/1.1.1.2
a. When A's IP will be there in connection attribute?
When A is in public IP.
b. When GW IP will be there in connection attribute?
When A is in behind NAT. / You made a configuration like call should
go through MG.
6. Same logic will happen when B is responding with 200.
Questions:
1. Here why you are bothering about the owner parameter?
2. Here you forget to mention the RTP flow?
3. If there is a Media between A and B means? Did media flows with the Help of
GW?
According to my understanding the Media might be flow in the below mentioned
direction.
A -->B
B -->MG(A) --> A
Assumption:
B initiated the response with SDP like (o = 2.2.2.1 & c = 2.2.2.1). When
the response is processed by MG. If B is in public IP then no need of MG
support. In this case might be MG added his own IP address in owner parameter.
Note: The above mentioned assumption is said according to the field which I am
working on. Might be your case is different.
Thanks,
Pradeep
> From: br...@broadsoft.com
> Date: Fri, 8 Aug 2014 06:04:28 -0400
> To: sourav_mi...@yahoo.co.in; sip-implementors@lists.cs.columbia.edu
> Subject: Re: [Sip-implementors] SDP reply incident
>
> I'm not sure what you are referring to as the owner address. If it is
> something which should match the connection address for security or other
> reasons, talk to the MGW vendor or administrator, there might be a
> configuration option to produce the behavior that you are expecting.
>
> As an fyi, the straw working group is attempting to standardize some B2BUA
> behavior.
>
> http://tools.ietf.org/wg/straw/
>
> > -----Original Message-----
> > From: sip-implementors-boun...@lists.cs.columbia.edu [mailto:sip-
> > implementors-boun...@lists.cs.columbia.edu] On Behalf Of Sourav Dhar
> > Chaudhuri
> > Sent: Thursday, August 07, 2014 8:46 AM
> > To: sip-implementors@lists.cs.columbia.edu
> > Subject: [Sip-implementors] SDP reply incident
> >
> > Hi,
> > I am observing a SDP reply from an INVITE mentioned below. Please
> let
> > me know whether the response can B is valid
> >
> >
> > A calls B;
> > A's call agent is 1.1.1.1 &
> > Media GW is 1.1.1.2
> > B's call Agent is 2.2.2.1 and B's Media gw is 2.2.2.2 in INVITE request,
> A send
> > the SDP, In that A will send its MGW's IP in
> > C=1.1.1.2
> > Connection Address: 1.1.1.2
> > Owner Address: 1.1.1.2
> > but problem is, when B
> > replies in 200OK ........... in that..
> > B is sending Owner address as
> > 2.2.2.2 and connection address as 2.2.2.1 Owner address is B's CA, not
> MGW
> >
> > Is this correct response.
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