[SR-Users] Issue using Kamailio as a proxy in front of Asterisk

[Daniel-Constantin Mierla]

Do not write private emails, keep the mailing list cc-ed for the topics 
started there.

Cheers,
Daniel

On 6/7/12 12:22 PM, Dominik Mauritz wrote:
> Daniel, Stoyna,
>
> the solutions you described look very interesting to me. I will have a 
> look at both and pick the one that fits best.
>
> Thanks guys.
>
> Rgs,
> Dominik
>
>
>
> Am 07.06.12 10:57, schrieb Daniel-Constantin Mierla:
>> Hello,
>>
>> On 6/6/12 9:57 PM, Stoyan Mihaylov wrote:
>>> We use Jitsi as SIP client, and openxcap along with camailio to 
>>> handle presence. Then jitsi know if account is online or offline.
>>> Our Asterisk dont know nothing about accounts (it accepts all calls 
>>> from kamailio). There I run AGI scripts, which can check kamailio 
>>> tables - and I can know if account is online or offline. Of course 
>>> this do not work if account is "forced" to offline.
>>> But may be there is better solution.
>>>
>>> On Wed, Jun 6, 2012 at 10:04 PM, Dominik Mauritz 
>>> <dominik.mauritz at web.de <mailto:dominik.mauritz at web.de>> wrote:
>>>
>>>     I have already tried that. I defined SIP-Accounts in Asterisk 
>>> with host=<Kamailio-IP> (instead of host=dynamic). This solves the 
>>> described problem but it also has side effects:
>>>
>>>     - You don't have the correct presence status on your phone (e. 
>>> g. xlite) indicating wether the account is online or offline
>>>     - Asterisk always sends invites to Kamailio on incoming calls 
>>> even if there is no phone registered to the account
>>>
>>>     These are not the worst things in the world, but it is maybe not 
>>> the best solution possible.
>>>
>>>
>>>
>>>     Am 06.06.12 20:41, schrieb Stoyan Mihaylov:
>>>
>>>         We use also Kamailio in front of Asterisk - but I forward 
>>> only calls to Asterisk - register/unregister stay in Kamailio. 
>>> Asterisk dont know which device is registered, and which is not.
>>>
>>>
>>>         On Wed, Jun 6, 2012 at 8:20 PM, Dominik Mauritz 
>>> <dominik.mauritz at web.de <mailto:dominik.mauritz at web.de> 
>>> <mailto:dominik.mauritz at web.de <mailto:dominik.mauritz at web.de>>> wrote:
>>>
>>>         Hi All,
>>>
>>>         some days ago I installed Kamailio as a front end for 
>>> Asterisk following this tutorial:
>>>
>>> http://kb.asipto.com/asterisk:__realtime:kamailio-3.1.x-__asterisk-1.6.2-astdb 
>>> <http://kb.asipto.com/asterisk:realtime:kamailio-3.1.x-asterisk-1.6.2-astdb> 
>>>
>>>
>>>
>>>         I added Multi Domain support and adjusted some other things 
>>> to fit my environment. Almost everything is working perfectly now. 
>>> One small issue is left:
>>>
>>>         With Kamailio in front of Asterisk I have one feature (next 
>>> to other cool things) I was missing for years. I am now able to 
>>> register more than one device on the same SIP account. This is 
>>> nothing new for Kamailio users but Asterisk doesn’t support this.
>>>
>>>         If I register two phones on one SIP account with Kamailio 
>>> everything is fine. They are able to make outgoing calls and both 
>>> ring on incoming calls. But if one phone unregisters Kamailio 
>>> forwards the unregister request to Asterisk and Asterisk sets this 
>>> account to offline. Now a call comes in but Asterisk is not sending 
>>> out an invite because for Asterisk the phone is offline.
>>>
>>>         I wonder if it is possible to forward an unregister request 
>>> from Kamailio to Asterisk only if the last endpoint registered with 
>>> one SIP account unregisters. If there is more than one endpoint 
>>> using the same Account Kamailio should not forward the unregister 
>>> request to Asterisk.
>>>
>>>         Any idea?
>>>
>> you can use reg_fetch_contacts(...) in your config to find out how 
>> many contacts are for an user and based on that do not send the 
>> un-register to asterisk, see:
>>
>> http://kamailio.org/docs/modules/stable/modules_k/registrar.html#id2498205 
>>
>> http://kamailio.org/docs/modules/stable/modules_k/registrar.html#id2498441 
>>
>>
>> Cheers,
>> Daniel
>>
>> -- 
>> Daniel-Constantin Mierla -http://www.asipto.com
>> http://twitter.com/#!/miconda -http://www.linkedin.com/in/miconda
>> Kamailio Advanced Training, Seattle, USA, Sep 23-26, 2012 
>> -http://asipto.com/u/katu
>> Kamailio Practical Workshop, Netherlands, Sep 10-12, 2012 
>> -http://asipto.com/u/kpw
>>
>>
>>
>

-- 
Daniel-Constantin Mierla - http://www.asipto.com
http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
Kamailio Advanced Training, Seattle, USA, Sep 23-26, 2012 - http://asipto.com/u/katu
Kamailio Practical Workshop, Netherlands, Sep 10-12, 2012 - http://asipto.com/u/kpw