Many SIP phones implement list-based Notify-Subscribe mechanism with the phone may request to be notified of status changes from a whole list of resources.
Thanks to PJSIP inclusion in Asterisk 12, I’m wondering how a Resource List Server could be implemented with Asterisk 12.
1. I couldn’t see RFC4662 itself is implemented in PJSIP. Is this correct ?
2. Which architecture regarding resource lists would best match Asterisk current and future feature set ?
A. In internal Asterisk feature ?
B. An external application which would subscribe to each individual resource on one hand, and would serve list-based requests on the other hand
C. Something else ?
3. Has someone already dealt with list-based Notify-Subscribes outside Asterisk scope ? How would you then qualify this experiment ?