[SR-Users] Kamailio Infront of Asterisk with remote PBX

[Fred Posner]

If you want to call a user on Kamailio from Asterisk...

example...

exten => s,1,Verbose(4,calling user on kamailio)
  same => n,Dial(SIP/USERNAME at KAMAILIO,time,options)
  same => n,--after dial logic --


Fred Posner
The Palner Group, Inc.
http://www.palner.com (web)
+1-503-914-0999 (direct)
+1-954-472-2896 (fax)

On 10/23/2014 11:21 AM, Kenny Watson wrote:
> Hi Fred,
>
> Thanks for the quick response.  I already do use some Kamailio
> features on our internal network for load balancing.
>
> The use case that I'm interested in is to effectively replace an
> asterisk server that I use for SIP trunking to remote phone systems
> with a Kamailio registrar/proxy and a bank of asterisk servers
> placing calls direct to extensions on the remote PBX.
>
> I currently have this running on asterisk which I route to the
> different remote PBX extensions using prefix based routing down to
> the destination peer on asterisk which is essentially what I need to
> replicate on Kamailio.
>
> i.e.
>
> 2021XXXX routes to   XXXX at remotepbx1
>
> remotepbx1 maybe defined as either by IP address or via a "normal"
> registered sip peer with a username/password combo.
>
>
> I understand that I can dial a registered device directly but its how
> to call a remote extension on a registered device via Kamailio.
>
> Thanks Kenny Watson
>
>
>
>
>
> -----Original Message----- From:
> sr-users-bounces at lists.sip-router.org
> [mailto:sr-users-bounces at lists.sip-router.org] On Behalf Of Fred
> Posner Sent: 23 October 2014 16:00 To: sr-users at lists.sip-router.org
> Subject: Re: [SR-Users] Kamailio Infront of Asterisk with remote PBX
>
> Hi Kenny,
>
> This depends on the carriers and scenarios that you may use. I know
> "depends" is a horrible answer, but one of the great aspects of
> Kamailio is the flexibility of the modules.
>
> Some deployments may have a group of Asterisk servers all configured
> similarly for handling calls. With this type of scenario, you would
> benefit from using the dispatcher module.
>
> Many people like to use Kamailio on the public side of their network
> and keep their asterisk servers on the private. This would be an
> example of when to use rtpproxy (in bridge mode).
>
> Some carriers hate seeing the chain of systems on your network (ie
> the asterisk boxes). Sometimes the use of TOPOH helps to integrate
> with the carriers who have chosen their own "interpretations" of RFC
> for "security."
>
> And there's more...
>
> The bottom line, is that the devil is in the details.
>
> Fred Posner The Palner Group, Inc. http://www.palner.com (web)
> +1-503-914-0999 (direct) +1-954-472-2896 (fax)
>
> On 10/23/2014 09:12 AM, Kenny Watson wrote:
>> Hi,
>>
>>
>> I have a few asterisk servers providing some basic SIP trunking and
>> routing.
>>
>> We have remote PBXs trunked onto asterisk which calls come into
>> asterisk and are routing down to extensions on the remote PBX via
>> prefix routing.
>>
>> I'm looking to have a central Kamailio
>> Registrar/Proxy/Loadbalancer which Invites come into and are routed
>> out to either SIP phones which are registered or to the remote
>> PBX.
>>
>> I'm looking for some advice as to which modules would be best to
>> use to achieve this as the remote PBXs will be dynamically
>> registered rather than fixed gateways.
>>
>> Please let me know what further information would be helpful.
>>
>> Thanks
>>
>> Kenny Watson
>>