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

[Kenny Watson]

Hi Fred,

Its more that the "user" on Kamailio is actually a PBX with extensions on it.

On asterisk I'd usually do Dial(SIP/peername/extension) but I obviously cant do this as Kamailio is the peer that the call is being routed to initially.

What I need to figure out is how to on kamailo maybe using a dial prefix specify that the call is going to a remote extension on a "user" and rewrite the to header to be extension at useripaddress rather than user at useripaddress.

Does this make sense?


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 16:34
To: sr-users at lists.sip-router.org
Subject: Re: [SR-Users] Kamailio Infront of Asterisk with remote PBX

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
>>

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