[SR-Users] Cisco 79XX Series Phones and TLS integration with kamailio

Jonathan Hunter hunterj91 at hotmail.com
Thu Jun 19 11:48:15 CEST 2014


Hi Mark,
Sure of course, they are some what painful to get working due to their asymmetric NAT behaviour.
What handset models are you working with, and what firewall devices do you have on site, as I have them working with a Cisco ASA on the network edge.
Then I can give you some more details on at least them trying to register to kamailio.
Thanks
Jon

From: mark at darkorigins.com
Date: Thu, 19 Jun 2014 10:37:42 +0100
To: sr-users at lists.sip-router.org
Subject: Re: [SR-Users] Cisco 79XX Series Phones and TLS integration with	kamailio

Hi Jon
It sounds like you’re a few steps in front of me.  I’m just starting to try and get a working set of config files etc for provisioning to the phones.  Which at the moment is going through the motions of registering but not actually sending anything.
Would you mind sharing your experiences so far?
Thanks
Mark





On 19 Jun 2014, at 09:50, Jonathan Hunter <hunterj91 at hotmail.com> wrote:Hi All,
As you guys might remember I have been doing alot of work with these legacy handsets recently, in particular the Cisco IP phones 7945G and 7965G.
They work well now with kamailio, using UDP or TCP as the transport protocol.
I am now looking to implement SIP over TLS with them, and wondered if anyone had completed the same, as it appears they were designed very much to support SIP over TLS and SRTP but with Cisco call manager and not other SIP devices.
I am trying to understand if its possible to integrate with kamailio, as from Cisco documentation it appears a CTL file (client trust list) is required which seems to be generated by cisco software, and the handset needs it before it will try to initiate a SIP connection over TLS.
I have implemented TLS /SRTP with Cisco SPA's, Bria etc on kamailio fine, so its more a question around the handset and if anyone has achieved this.
Thanks
Jon_______________________________________________
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