Patent ID: 8014780

Claim:
A method of transmitting an identity of a calling subscriber to a mobile station assigned to a called subscriber, wherein the called subscriber is a mobile subscriber in a mobile communication system comprising switching centers for establishing a speech connection between a mobile station assigned to the calling subscriber and the mobile station assigned to the called subscriber, wherein one of the switching centers is associated with the mobile station assigned to the called subscriber, the method comprising: storing permanent subscriber data in a home location register and storing temporary subscriber data in a visitor location register, and transmitting the identity of the calling subscriber to the switching center associated with the mobile station assigned to the called subscriber from the home location register in connection with a request for routing information, wherein the transmitting further comprises using MAP signaling of the mobile communication system, the home location register transmitting a roaming number request message to the visitor location register, wherein the identity of the calling subscriber is added to the roaming number request message.