Mohamed Mustafa wrote:
Hi All,
H.323 requires all endpoints to transmit an IRR message in response to an IRQ message from a Gatekeeper (or some other entity), and also to send unsolicited IRR messages to the Gatekeeper's RAS address at specific intervals if requested by the Gatekeeper in the ACF or RCF messages.
As I understand it, an endpoint must provide the details of all active calls in a single IRR response if the callReferenceValue field in the IRQ is set to 0. This is clearly not possible if the endpoint supports thousands (or even hundreds!) of simultaneous calls. Can anyone provide any guidance on what to do in such a situation?
H.323 v4 will contain a feature that will allow segmenting the response into a series of IRRs. This was approved at the February meeting. In the meantime, the standard does not specify how to handle this situation. I would be interested in guidance in this case as well.
Also, in the case of unsolicited IRR messages, I can't find anything which states that an endpoint must provide details of all active calls in each unsolicited IRR message. Therefore, an endpoint can either send a separate IRR message for each call, or it combine details of a number of calls (but not necessarily all) into each IRR message. Is my interpretation correct?
Since unsolicited IRRs are requested per-call via the irrFrequency, my interpretation is that an IRR should report only the information about the call for which it was requested.
That said, I think it would be a useful enhancement to find a standard way to combine IRRs.
Regards, Rich --
Thanks, Mohamed
-- -------------------------------------------------------------------- Richard K. Bowen Cisco Systems, Inc. rkbowen@cisco.com Research Triangle Park, NC --------------------------------------------------------------------