RECEIVING A REQUEST TO DETERMINE AN AVAILABILITY OF
A SERVICE SUBSCRIBER FOR RESPONDING TO AN EVENT /— 402
ASSOCIATED WITH A SERVICE, THE SERVICE DEFINED IN
TERMS OF THE EVENT AND A SITUATION OF THE SERVICE
SUBSCRIBER
404 SUBSCRIBER USING SUBSCRIBER CONTEXT INFORMATION / BASED ON PRIVATE INFORMATION OF THE SUBSCRIBER
USING ATTRIBUTES OF THE EVENT AND THE CURRENT
SUBSCRIBER SITUATION TO PROVIDE TO THE SERVICE AT
LEAST ONE OF THE SUBSCRIBER CONTEXT INFORMATION
AND A PROBABILITY RELATED TO AN AVAILABILITY OF THE /— 406
SUBSCRIBER FOR RESPONDING TO THE EVENT, ALLOWING
THE SERVICE TO GENERATE A RESPONSE TO THE EVENT
ON BEHALF OF THE SUBSCRIBER WITHOUT THE SERVICE
HAVING DIRECT ACCESS TO THE PRIVATE SUBSCRIBER
INFORMATION