Hi Ali,
Looking through the source code, its not that the port for I-CSCF is hard coded to 5060, its just that it defaults to 5060 if the following is set in the Kamailio.cfg file: dns_try_naptr=no which we had left it disabled.
Well I assumed I had all the DNS worked out, I had NAPTR records set for the P,I and S-CSCF.
Looking though the pcscf.cfg there is a setting for NETWORKNAME which is set to ims522.ims.org, and is a separate FQDN from the P,I,S-cscf FQDN’s. I always kept the NAPTR rec for ims522 as the same port of the P-CSCF (pcscf522) in DNS.
Two things I needed to fix:
1. Enable the DNS NAPTR lookups: dns_try_naptr=yes
2. Modify the NAPR for ims522 to be that of 4060
Thanks to you and Amar for the pointing to DNS.
_Martin
From: sr-users <sr-users-bounces@lists.kamailio.org>
On Behalf Of Ali Shirvani
Sent: Tuesday, July 23, 2019 1:40 PM
To: Kamailio (SER) - Users Mailing List <sr-users@lists.kamailio.org>
Subject: [EXT] Re: [SR-Users] P-CSCF and I-CSCF ports
Hi Martin,
As Amar pointed out it may some DNS configuration.
You can check the DNS entry of I-CSCF with:
$ dig -t srv <FQDN of I-CSCF>
Regards,
Ali
On Tue, Jul 23, 2019 at 7:15 PM Amar Tinawi <amar.tinawi@gmail.com> wrote: