These topics are being discussed in the simple working group. I'd
suggest you direct future queries there as they are likely to result in
a faster response.
To briefly answer your question, a SUBSCRIBE is also used to query. The
Expires header field is set to zero. This tells the presence server to
send a NOTIFY with the current state and then terminate the subscription
immediately.
-Jonathan R.
Rg wrote:
Hi
Greetings again
Could any one help in clarifying the below issue please?
Thanks
GandhiSivakumar
ProjectManager
NM-Research,
MBT,India
----- Original Message -----
*From:* Rg <mailto:sivakg(_at_)mahindrabt(_dot_)com>
*To:* ietf(_at_)ietf(_dot_)org <mailto:ietf(_at_)ietf(_dot_)org>
*Sent:* Monday, March 21, 2005 10:09 AM
*Subject:* Presence -Watcher clarification
Hi
Greetings!
Can any VOIP -Presence Agent designer help me in clarifying the below issue?
This is with reference to the Model for Presence and IM and related Info.
The watcher sends SUBSCRIBE Request to the Presence Agent and the
Presence Agent sends Notification for any change observed in the presentity.
"In contrast the fetcher is interested only in the current status of the
presentity ,it does not send SUBSCRIBE request" -in this context , what
is the method invoked by the Fetcher (like the watcher invoking
SUBSCRIBE method) ? Whom does it query?Does it query the Presence Agent?
Or it has access to the registration database ?( Logically I affirm that
the fetcher need not have access to the registration data base).Could
any one help me in clarifying the issue?
Thanks and Regards
Gandhi Sivakumar(RG)
Project Manager
NM -Research
MBT,
INDIA
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Jonathan D. Rosenberg, Ph.D. 600 Lanidex Plaza
Director, Service Provider VoIP Architecture Parsippany, NJ 07054-2711
Cisco Systems
jdrosen(_at_)cisco(_dot_)com FAX: (973) 952-5050
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