[VoiceOps] Broadworks: Preserve sip call-ID

[Howard Hart]

They've been trying to push through a Session-id spec in the SIP 
Dispatch IETF working group for some time. This is a globally unique 
identifier that is carried across B2BUA's unmolested. Seems to always 
fade away, but if it were actually ever passed as an RFC, you could go 
to your vendor and ask them to implement it with some level of 
confidence they'd actually do it in a way that's compatible with all the 
other vendors.

The last attempt was 
http://tools.ietf.org/html/draft-kaplan-sip-session-id-03, expired March 
2011. Some talk lately in the IETF of reviving it or a slight 
permutation, though nothing specific that I'm aware of.

Howard Hart


On 03/15/2012 01:20 PM, Keith Croxford wrote:
> I'm matching by multiple headers (to, from, pai, others) and these are 
> nested within a specific block of time. It's basically a few 
> modifications from the default call merging algorithm. I can't show 
> my exact modifications, but that should lead you in the proper path.
>
> This works OK other than in one scenario.
>
> Imagine that 4801001234 at domain1 makes a call. Within this set time 
> window 1234 at domain2  initiates a call as well.  Even though I am set 
> to match on the last 6 characters of the caller/callee, Palladion is 
> merging the calls from 1234 at domain2 and 4801001234 at domain1.
>
> I'm still working with IPTEGO to get a few of these bugs worked out. 
> If I knew how to (((write code in LISP)) it would be much easier 
> accomplish.)
>
> Keith
>
>
>
> On Thu, Mar 15, 2012 at 11:56 AM, Michael Lunsford 
> <Michael.Lunsford at cbeyond.net <mailto:Michael.Lunsford at cbeyond.net>> 
> wrote:
>
>     Unfortunately, I don't have my fingers on one any longer.  Have
>     you requested vendor support?
>
>
>     On Mar 15, 2012, at 2:35 PM, Rakesh Unni wrote:
>
>     Any tips on the setup mate?
>
>     Much appreciated,
>     Rakesh
>
>     Sent from my iPad
>
>     On 15 Mar 2012, at 16:53, Michael Lunsford
>     <Michael.Lunsford at cbeyond.net
>     <mailto:Michael.Lunsford at cbeyond.net>> wrote:
>
>     > Palladion has options other than Call-ID that will allow
>     correlation of call legs including SDP.
>     >
>     >
>     > On Mar 15, 2012, at 12:42 PM, Rakesh Unni wrote:
>     >
>     > It's Palladion  we are trying. Not sure why they worry about
>     call-ID manipulation, guess it has some reference to the licensing
>       validation for transactions.
>     >
>     > Thanks
>     > Rakesh
>     >
>     > On 15 March 2012 16:19, Hiers, David <David.Hiers at adp.com
>     <mailto:David.Hiers at adp.com><mailto:David.Hiers at adp.com
>     <mailto:David.Hiers at adp.com>>> wrote:
>     > Never had to try, but I've never seen anything in BW that is
>     even close to this.  I know that you can't get them to take the
>     "BW" out of the call-ID (sigh....).
>     >
>     > You're asking for something that is pretty brittle. If you ever
>     fork, you can't preserve the inbound call-ID on the multiple
>     outbound legs, because call-IDs must be globally unique
>     (RFC3261:8.1.1.4).
>     >
>     >
>     >
>     > David
>     >
>     >
>     > From: voiceops-bounces at voiceops.org
>     <mailto:voiceops-bounces at voiceops.org><mailto:voiceops-bounces at voiceops.org
>     <mailto:voiceops-bounces at voiceops.org>>
>     [mailto:voiceops-bounces at voiceops.org
>     <mailto:voiceops-bounces at voiceops.org><mailto:voiceops-bounces at voiceops.org
>     <mailto:voiceops-bounces at voiceops.org>>] On Behalf Of Rakesh Unni
>     > Sent: Thursday, March 15, 2012 08:47
>     >
>     > To: VoiceOps at voiceops.org
>     <mailto:VoiceOps at voiceops.org><mailto:VoiceOps at voiceops.org
>     <mailto:VoiceOps at voiceops.org>>
>     > Subject: [VoiceOps] Broadworks: Preserve sip call-ID
>     >
>     >
>     >
>     > Hi guys,
>     >
>     > We are running r17 at the moment and currently testing a
>     monitoring platform for both signalling and media. They use sip
>     callID to identify call legs to merge and i would like to have all
>     call legs on one call (from the originating access side to where
>     we send the traffic to for PSTN). Since Broadworks act as a B2BUA
>     it rewrites the originating callID to BW-xxxxx. I've made changes
>     on the SBC to preserve the callID but now need Broadworks to
>     preserve it.
>     >
>     > Is it possible on Broadworks to transparent proxy the callID
>     from the access side to the terminating side ?
>     >
>     > Thanks
>     > Rakesh
>     >
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>     >
>     >
>     > --
>     > Rakesh
>     >
>     > +44 2033931856 <tel:%2B44%202033931856>
>     > sip:unni at getonsip.com
>     <mailto:sip%3Aunni at getonsip.com><mailto:sip%3Aunni at getonsip.com
>     <mailto:sip%253Aunni at getonsip.com>>
>     >
>     >
>     >
>
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