[cisco-voip] Anyone famliar with GUIDs in CallManager/VXML?

[Jason Aarons (AM)]

I think our developer writing a app found a workaround other than using a GUID with SIP CVP. But I did some more Bing searches, however I think it's a dead issue currently.

Seems SIP protocol hasn't standardized GUID, drafts expired.  Some searches on GUID also reference the other term Universally Unique Identifier (UUID) which is the same concept different name.

Nothing about GUIDs in Asterisk either.
http://cdn.oreilly.com/books/9780596510480.pdf

Apparently the SIP GUID expired without approval with the sponsor being Nortel which is no longer in business!
https://datatracker.ietf.org/doc/draft-stucker-sip-guid/

Some GUID references
http://docwiki.cisco.com/wiki/Call_Tracing:_What_components_did_the_call_reach%3F

Voice XML Programmers Guide
cisco-guid
cisco-newguid
session.telephone.com.cisco.guid
http://www.cisco.com/en/US/docs/ios/voice/vxml/developer/guide/vxmlpg.pdf


From: Wes Sisk [mailto:wsisk at cisco.com]
Sent: Friday, May 06, 2011 11:02 AM
To: Jason Aarons (AM)
Cc: cisco-voip (cisco-voip at puck.nether.net)
Subject: Re: [cisco-voip] Anyone famliar with GUIDs in CallManager/VXML?

Jason,

Can you elaborate a bit more?

My initial interpretation of your post reminds me of a commonly discussed feature for Cisco UC called "global call id's".  The idea there is to generate a single GUID to track a call through all products and features.  This requires passing the GUID in signaling (h323, SIP, SCCP, MGCP).  The concept garners significant interest.  Implementation complexity has been prohibitive so far.

This suggests a possibility - the "GUID" referenced may be the h.323 GUID assigned per-call when h.323 is used.  CVP may have exposed that in original H.323 integrations. SIP does not have a GUID concept AFAIK - we ran into this with Analysis Manager (see below).  So if you are using SIP integration there would be no h.323 GUID.  Unless someone took special steps to translate something from signaling into a GUID there would be no SIP GUID per say.


The closest that exists today is Analysis Manager:
http://www.cisco.com/en/US/docs/voice_ip_comm/cucm/service/8_0_1/rtmt/ch1_overview.html
This pulls CDRs from CUCM, IPCC, Unity?, and IOS? and uses unique attributes of signaling (tcp port numbers, h323 guids, sccp call ref numbers, SIP call ref numbers, ...). I'm not clear of the products covered in the current release.  All of those were in the original feature discussion.

Regards,
Wes

On 5/6/2011 10:42 AM, Jason Aarons (AM) wrote:
>From a co-worker doing some UCCE work "I'm not getting GUID on any of my CVP calls that originate from UCM. Both calls from the dialer 30VIP ports and calls to CTI RPs don't have a guid"

I wasn't familiar that CallManager used GUIDs for call tracking. Anyone familiar with a setting to turn GUIDs on or off? -jason

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