[SR-Users] [EXT] Re: P-CSCF and I-CSCF ports -RESOLVED

[Woscek, Martin W.]

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 at lists.kamailio.org> On Behalf Of Ali Shirvani
Sent: Tuesday, July 23, 2019 1:40 PM
To: Kamailio (SER) - Users Mailing List <sr-users at 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 at gmail.com<mailto:amar.tinawi at gmail.com>> wrote:
Hello Martin

I think you are missing the DNS part.

On Tue, Jul 23, 2019, 5:30 PM Woscek, Martin W. <mwoscek at mitre.org<mailto:mwoscek at mitre.org>> wrote:
Hi IMS users,

I can configure the P-CSCF to use 5060, and the I-CSCF to use 4060 and both come up listening to their respective ports when each module is started.
But the P-CSCF is hardcoded to use 5060 for the I-CSCF.

Before I make code changes to the executable:
Is there some additional configuration to allow for me to switch ports?
Why is Kamailio IMS hardcoded and why not enforce it at the .cfg load time?


Thanks,
Martin


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