That is a good questions. I would say this;
3rd party registration is when; The target endpoint (called party ) may not be the Registering Entity (IWF/BE) based on the binding between alias and transport address; AND the entity receving the RRQ is aware that this is a 3rd-party RRQ ( a registers b).
This needs to be clearly defined but before that we must be sure there is value in defining 3rd party registration (like third party call control: GK-initiated call control (re-routing...))
some value:
- In this case I do not have to hunt for a "line" at the GK (so at the GK, I would know that a call was for a registered EP b (registered by registering entity a) and send the call to the transport address which b's alias is binded to (called party is b's alias address); which may be a's transport address depending on the time). With the alternateEndpoint structure, I would reach b only after hunting.
Best regards, charles -----Original Message----- From: Roy, Radhika R, ALCOO [mailto:rrroy@ATT.COM] Sent: Tuesday, December 12, 2000 9:52 PM To: ITU-SG16@MAILBAG.INTEL.COM Subject: Re: Third party registration/group registration
I guess that it is a good observation by Bob. It can be thought a "kind" of third party activities. However, a BE becomes a "party" in this process because people have now have a place to go to have the information. And that place is the BEs themselves.
So the basic question remains: What is the basic definition of the "third" party registration in H.323?
Thanks Bob for his important observation.
Best regards, Radhika
-----Original Message----- From: Callaghan, Robert [mailto:Robert.Callaghan@ICN.SIEMENS.COM] Sent: Tuesday, December 12, 2000 3:41 PM To: ITU-SG16@MAILBAG.INTEL.COM Subject: Re: Third party registration/group registration
I might interject that H.225.0 Annex G can be thought of as a form of Third Party registration. This protocol allows a Border Element (or Gatekeeper) to registers its endpoints with other Border Elements (or Gatekeepers).
I do not know is this adds to the discussion, or not.
Bob
-------------------------------------------------------------- Robert Callaghan Siemens Enterprise Networks 5500 Broken Sound Blvd, Boca Raton, Fl 33487 Tel: +1 561 923-1756 Fax: +1 561 923-1403 Email: Robert.Callaghan@ICN.Siemens.com -----------------------------------------------------------------
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