Patent ID: 8306507

Claim:
A method of message notification, comprising: receiving at a server a plurality of session initiation protocol (SIP) SUBSCRIBE method requests comprising a plurality of notification filters associated with a plurality of user equipments (UEs) associated with a common public user identity (PUI) , wherein each of the notification filters is configured to filter messages according to at least one of a message type and a media type, wherein a first notification filter of the plurality of notification filters is associated with a first one of the plurality of UEs, and wherein a second notification filter of the plurality of notification filters is associated with a second one of the plurality of UEs different from the first one; receiving at the server a first message and a second message, wherein the first message satisfies the first notification filter and the second message satisfies the second notification filter, and wherein the first and second messages are addressed to the common PUI; notifying the first one of the plurality of UEs in accordance with the first notification filter that the first message is available for retrieval; and notifying the second one of the plurality of UEs in accordance with the second notification filter that the second message is available for retrieval.