Patent ID: 7277698

Claim:
A proxy method for calls to a called subscriber, wherein the called subscriber is roaming in a visit network, comprising the following: initiating, by a calling subscriber in the visit network, a proxy service request for a call to the called subscriber to a proxy for calls to a roaming subscriber CRP; storing the relevant information in a waiting call data storage module in the CRP, in response to the proxy service request; sending a callback inform message to the called subscriber; calling back the CRP by the called subscriber in response to the callback inform message; in response to the call from the called subscriber, determining the calling subscriber according to the data stored in the waiting call data storage module in the CRP; establishing a voice bear between the calling and the called subscribers; correlating the call-relevant information from the calling and the called subscribers; and wherein the proxy service request for calls to the roaming subscriber in the initiating step is accomplished by sending a call subscription message.