Patent ID: 7590073

Claim:
A method for registering a communications device having a permanent communication address in a communications network, the method comprising: coupling said communication device with said communications network, wherein said communications network is a UMTS network, by: negotiating, between the communications device and at least one registration unit of the communication network, at least one additional temporary communications address which is different from said permanent address and is valid only for a predetermined utilization period, wherein the registration unit is a Registrar according to a Session Initiation Protocol of the UMTS network or a Serving Call Session Control Function of the UMTS network; registering the additional temporary communications address by the registration unit for the utilization period; establishing a connection between said communications device and said communications network under said temporary communications address; proposing the at least one additional temporary communications address for registration by the registration unit by the communications device; transmitting the proposed at least one temporary communications address by the communications device via a registration signal to the registration unit; assigning a priority by the communications device to the proposed at least one additional temporary communications address, wherein the priority determines a sequence of registration; and transferring the assigned priority together with the proposed at least one additional temporary communications address in the registration signal to the registration unit.