Patent ID: 7554973

Claim:
A shared multi-user IP telephone device which receives, based on SIP a call transmitted over a VoIP network, with the shared multi-user IP telephone device serving as a SIP user agent, and creating and managing a session between a caller and a callee according to SIP, wherein the shared multi-user IP telephone device comprises: a storage device for storing associatively in the form of a database a user profile including a user ID and a personalized feature descriptor corresponding to the user ID; an ID extraction portion for receiving from the VoIP network a SIP packet including at least the callee's ID, and extracting the ID contained in the SIP packet, wherein the ID is unique for every user on the VoIP network; a user registration portion for receiving the user ID, receiving, deleting, or retrieving a corresponding user profile over the VoIP network according to a user instruction, and storing the corresponding user profile in the storage device; said user registration portion comprising: an access right configuration device used to configure access rights for users of the storage device; and a verification device for storing the received or retrieved user profile in the storage device, or verifying the user's access right to the storage device before deleting the user profile from the storage device, and denying this registration operation if the user has no access right to the storage device; and a personalized feature presentation portion for searching in the storage device for the user profile corresponding to the ID according to the ID extracted by the ID extraction portion, for presenting the personalized feature according to the search result, wherein the SIP packet is the packet transmitted by the caller's calling device to the VoIP network following the manner; the calling device receives the callee's ID input by the caller, encapsulates at least the callee's ID in the SIP packet, and send the SIP packet to the VoIP network.