[Kamailio-Users] SIP-T: Multipart SDPs, ISUP parsing, etc

[Daniel-Constantin Mierla]

Hello,

On 02/11/2009 03:20 PM, Abdul Hakeem wrote:
> Hi,
>
> Just wanted to touch base on the parser to find out if you are still
> pursuing this.
>   
it is still on my todo list, however didn't make it in the upcoming 
1.5.0. Ovidiu Sas did some commits to the SDP parser and I know couple 
of others using it with success.

Please open a feature request at:
http://sourceforge.net/tracker/?atid=743023&group_id=139143&func=browse

It is easier to track and not forgot about it for the next release.

Thanks,
Daniel


> I am in the mind of purchasing some Cisco equipment to do the Sip-MAP
> gateway from a GSM network.
> I have someone else from the OpenBTS with me on this.
> The object is to provide a full fledged sip based routing of voice, sms and
> multimedia calls from gsm handsets to  BTS with a Sip server backend.
>
> Cheers,
> Abdul Hakeem 
>
> -----Original Message-----
> From: users-bounces at lists.kamailio.org
> [mailto:users-bounces at lists.kamailio.org] On Behalf Of Daniel-Constantin
> Mierla
> Sent: 03 September 2008 17:45
> To: Kristian Kielhofner
> Cc: users at lists.kamailio.org
> Subject: Re: [Kamailio-Users] SIP-T: Multipart SDPs, ISUP parsing, etc
>
> Hello,
>
> On 09/03/08 19:10, Kristian Kielhofner wrote:
>   
>> Hello everyone,
>>
>>   Feel free to set $OSSPROXY to whatever you like = 
>> Kamailio/OpenSIPS/OpenSER (for those of you who can't let go).
>>
>>   $OSSPROXY is my favorite SIP toolkit.  In addition to being an 
>> excellent proxy and registrar it serves as a platform to do SIP 
>> mangling and wrangling.  With that in mind let me propose a crazy 
>> idea...
>>
>>   How hard would it be to get $OSSPROXY to be able to parse what is 
>> commonly referred to as SIP-T (RFC 3372)?  I understand $OSSPROXY has 
>> no business getting too involved in the SDP but I feel it makes sense 
>> in some instances (like this one).  What if I want to make a routing 
>> decision based on an encapsulated ISUP parameter of some sort?  Who 
>> knows what it could be!?!?  Maybe there are some other uses but that 
>> makes the most sense and seems to be the most practical.  It should be 
>> possible to develop an $OSSPROXY module to:
>>
>> - Use the SDP parser to find the ISUP SDP part:
>>
>> http://www.kamailio.net/dokuwiki/doku.php/development:sdp-parsing
>>
>> - Pass that part into a "real" ISUP parser (if necessary).  I couldn't 
>> seem to find the perfect library but perhaps something like this could
>> work:
>>
>> http://www.openss7.org/isup.html
>>
>> - Make the ISUP parameters available via AVPs, pseudo variables, etc 
>> for use in the $OSSPROXY script.
>>
>>   I don't really have a need for this but it seems like it could be 
>> cool.  Am I nuts?
>>
>>   
>>     
> I would expose the body as a dynamic structure, so components will be
> accessible in the script, e.g. (naming schema just for example),
>
> if($body(0=>content-type)=="application/sdp")
> {
>     if($body(0=>m=>type) == "audio")
>     {
>     }
> }
>
> Based on the available content type parsers (sdp, isup), the structure has
> different attributes.
>
> Cheers,
> Daniel
>
>
> --
> Daniel-Constantin Mierla
> http://www.asipto.com
>
>
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>
>   

-- 
Daniel-Constantin Mierla
http://www.asipto.com