CISCO Presence Server (2)

When CUPC registers to CUPS , it sends 3 SIP packets.


A: subscribe to the contact-list
Method : SUBCRIBE
Event: presence


B: subscribe to the live presence of each user in the contact-list.
Method : SUBCRIBE
Event: presence

C: I have no idea what's function of this packet ? but CUPS just replied BAD EVENT.

Method : SUBCRIBE
Event: profileconfig ------------------------------????