[Freeswitch-users] Sofia - calling through gateway - duplicate RTP port in SDP

[Anthony Minessale]

do you have bypass_media=true set or the inbound-bypass-media sip profile
option set?
This call flow looks to me like proxy mode where the sdp of the inbound leg
is offered to the remote leg to attempt to
establish direct communication between caller and gateway.

Since caller has natted IP this may not work so well.

If you are setting bypass_media=true, either remove it or use
proxy_media=true instead.

On Sun, Apr 20, 2008 at 10:39 AM, kokoska rokoska <kokoska.rokoska at post.cz>
wrote:

>
> My be i have a clue :-)
>
> May be FreeSWITCH thinks that offers different IPs because I set
> "ext-rtp-ip" to public IP of my network in SIP profile gateway is in -
> FreeSWITCH runs on devel machine behind NAT...
>
> Do you think it could be the reason? And if yes, how to avoid it?
>
> Best regards,
>
> kokoska.rokoska
>
>
> kokoska rokoska napsal(a):
> >
> > Brian West napsal(a):
> >> Can you provide a bit more detail?  I can only guess what or how
> >> you're trying to use it.
> >>
> >
> > Well, here is what I try to do:
> >
> > 1. I have two users defined in directory which are registered with
> > FreeSWITCH. Both are in same SIP profile "default" (FS UA runs at port
> > 5065).
> >
> > 2. I have different SIP profile (FS UA runs at port 7001) in which I
> > have defiend gateway to my telco-provider.
> >
> > 3. A make a call from one of users (see 1.) to some PSTN number.
> > FreeSWITCH (UA at port 5065) receives INVITE, ask about credentials etc.
> > FreeSWITCH (UA at port 7001) successfuly authorizes against my telco
> > etc. and establish media flow (183,200) from local port, say 1234, IP
> > 1.2.3.4.
> >
> > 4. Than UA at port 5065 try to establish media flow (183,200) to local
> > user, but offers the same IP/port in SDP - 1.2.3.4:1234.
> >
> > 5. Than both legs (my telco and local user) send RTP to same IP:port.
> > IMO it can't work. And, like I think, it don't - both legs hear nothing
> > and FreeSWITCH kills call after a while with cause: MEDIA_TIMEOUT.
> >
> >
> >> How are you trying to call a registered user?
> >
> > I'm not sure what you are asking. I call localy registred user by
> > <action application='bridge' data='sofia/default/user%domain'/>
> > and it works fine.
> >
> > What don't work (see above) is to call out through gateway:
> > <action application='bridge' data='sofia/gateway/gw_name/number'/>
> >
> >> It's perfectly OK to
> >> receive media from two different IP's on the same port
> >
> > Yes, but there is same IP and port...
> >
> >> but I smell a
> >> bug but more so a usage case we haven't tested.
> >>
> >
> > Not sure, but it looks like it. Or I miss something important in config
> > options.
> >
> >> Provide the sip trace and the console log on pastebin and reply with
> >> the urls.
> >>
> >
> > Here is pastebin url:
> > http://pastebin.freeswitch.org/4273
> >
> >
> > Best regards,
> >
> > kokoska.rokoska
> >
> >> /b
> >>
> >> On Apr 20, 2008, at 5:42 AM, kokoska rokoska wrote:
> >>
> >>> Hi all,
> >>>
> >>> I have came into troubles with calling from localy registered user
> >>> through Sofia gateway:
> >>>
> >>> FreeSWITCH offers the same RTP port in SDP to both call legs and thus
> >>> I'm without audio and FreeSWITCH kills the call after a while with
> >>> cause
> >>> MEDIA_TIMEOUT (this is not really valid cause, because media goes to
> >>> FreeSWITCH from both legs, but to the same port :-)
> >>>
> >>> When I make call between localy registered users, everything looks
> >>> good.
> >>>
> >>> I really don't know what I'm doing wrong, so any clue is very
> >>> appreciated :-)
> >>>
> >>> BTW: I have both FreeSWITCH console log and pcap dump if someone
> >>> interested. And, of course, can supply any other required informations
> >>> about calls.
> >>>
> >>> Thanks in advance, best regards
> >>>
> >>> kokoska.rokoska
> >>>
> >>>
> >>> _______________________________________________
> >>> Freeswitch-users mailing list
> >>> Freeswitch-users at lists.freeswitch.org
> >>> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
> >>> UNSUBSCRIBE:
> http://lists.freeswitch.org/mailman/options/freeswitch-users
> >>> http://www.freeswitch.org
> >> Brian West
> >> sip:brian at freeswitch.org <sip%3Abrian at freeswitch.org>
> >>
> >>
> >>
> >>
> >> _______________________________________________
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> >>
> >
> >
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>
>
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-- 
Anthony Minessale II

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