[Spce-user] CE 2.6 - send reply to contact

Klaus Peter v. Friedeburg friedeburg at aco.de
Thu Sep 20 15:51:17 EDT 2012


Dear Andrew,

with CE 2.4 it was possible to do so.

In the example below we receive the SIP-Packet from 1.1.1.1 but shouls send our replies to 1.1.1.2 (Contact-header)

Klaus Peter


> -----Ursprüngliche Nachricht-----
> Von: spce-user-bounces at lists.sipwise.com [mailto:spce-user-bounces at lists.sipwise.com] Im Auftrag von
> Andrew Pogrebennyk
> Gesendet: Donnerstag, 20. September 2012 21:31
> An: spce-user at lists.sipwise.com
> Betreff: Re: [Spce-user] CE 2.6 - send reply to contact
> 
> Klaus,
> 
> you may be mixing up a few things. The SIP replies are sent by Via
> header (to received IP and port from Via). There is no workaround.
> 
> On 09/20/2012 09:09 PM, Klaus Peter v. Friedeburg wrote:
> > Hi,
> >
> > I have problems to build up the following szenario:
> > My PSTN-Provider have a SIP-loadbalancer with IP 1.1.1.1. This IP is the peering.
> > But the replys must be send to an other the IP ex. 1.1.1.2 (written down in contact header)
> >
> > How is a way to send my replys to the contact ?
> >
> > I think I must use the fix_nated_contact() function but I don’t know where.
> > Using CE 2.6
> >
> > Her is an example of sip-packet:
> > ############################################
> > SIP/2.0 180 Ringing
> > Via: SIP/2.0/UDP 2.2.2.214;branch=z9hG4bK59b8.88f2435c752ae730795757ff2fb41c0f.0
> > Via: SIP/2.0/UDP 127.0.0.1:5080;branch=z9hG4bKWwU6ta5w;rport=5080
> > From: <sip:123456789 at blabla.de>;tag=2B9E9B0D-505B668F000A7564-60852700
> > To: <sip:123456791 at 1.1.1.1>;tag=505B668F-5683ACD-0AB9FC95
> > CSeq: 10 INVITE
> > Call-ID: F0F73B5AB9631DC5 at 212.101.37.17_b2b-1
> > Record-Route: <sip:1.1.1.1;lr>
> > Record-Route: <sip:2.2.2.214;r2=on;lr=on;ftag=2B9E9B0D-505B668F000A7564-60852700;ngcplb=yes>
> > Record-Route: <sip:127.0.0.1;r2=on;lr=on;ftag=2B9E9B0D-505B668F000A7564-60852700;ngcplb=yes>
> > Contact: <sip:1.1.1.2:5060;transport=udp>
> > MIME-Version: 1.0
> > Require: 100rel
> > RSeq: 1
> > Allow: CANCEL,INFO,OPTIONS,BYE,PRACK,UPDATE
> > Content-Type: application/sdp
> > Content-Length: 383
> >
> > v=0
> > o=hiQ9200 3743020120820205511 391249998 IN IP4 62.180.246.13
> > s=Phone Call via hiQ9200 SIPCA
> > c=IN IP4 1.1.1.3
> > t=0 0
> > m=audio 24246 RTP/AVP 8 0 102 101
> > a=rtpmap:8 PCMA/8000
> > a=fmtp:8 vad=no
> > a=rtpmap:0 PCMU/8000
> > a=fmtp:0 vad=no
> > a=rtpmap:102 G726-32/8000
> > a=rtpmap:101 telephone-event/8000
> > a=fmtp:101 0-15
> > a=sqn: 0
> > a=cdsc: 1 image udptl t38
> > a=sendrecv
> > a=ptime:30
> > ############################
> >
> > Greeting
> >
> > Klaus Peter
> >
> >
> >
> > _______________________________________________
> > Spce-user mailing list
> > Spce-user at lists.sipwise.com
> > http://lists.sipwise.com/listinfo/spce-user
> >
> 
> 
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