[SR-Users] openser as SIP AS in IMS environment...

[Daniel-Constantin Mierla]

Hello,

On 4/30/10 8:24 PM, Iñaki Baz Castillo wrote:
> 2010/4/30 Jignesh Gandhi<Jignesh.Gandhi at moviuscorp.com>:
>    
>> Hello All,
>>
>> Can openser be used as a SIP Application Server in an IMS infrastructure ?
>>
>> Should I use Kamailio instead ?
>>      
>
> By definition a SIP proxy is not a "SIP Application Server"(which in
> most cases are B2BUA's).
>    

Well, 'SIP proxy is not an SIP application server' is a bit forced. IMO, 
an application of SIP can be proxying SIP request, while most of the 
sites define couple of SIP server side entities like proxy, registrar, 
etc... these are just some types of applications for SIP.

On the other hand, Kamailio is more than a proxy and it is in fact a 
real application server. It cannot be a VoIP application server, since 
it does not do media processing, but can be a sip signaling application 
server and it is a lot you can do with signaling only (e.g., messaging, 
presence, custom communications and notifications).

> However if you mean a "IMS SIP proxy/registrar" then OpenSer/Kamailio
> could be valid (except for some custom requeriments of IMS). You can
> take a look to OpenIMS which is OpenSer/Kamailio with some
> "customization" or new modules designed for IMS.
>    
This is indeed an app to look at, site is http://www.openimscore.org. 
AFAIK, they updated their code and practically they run same core and 
common modules as kamailio/ser 3.0

To give the proper answer to the question, then the kind of application 
wanted to be deployed must be described.

And kamailio is just the new name of openser, since there were some 
trademark issues with openser word. The sourceforge devel project still 
keeps openser name. Last version released under openser name was 1.3.x, 
the first under kamailio name was the next one 1.4.0. Version 3.0.x is 
the last stable one, with lot of enhancements since last version with 
openser name was released, see here what are the major enhancements 
coming with every release:
http://www.kamailio.org/dokuwiki/doku.php#features


Cheers,
Daniel

-- 
Daniel-Constantin Mierla
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