Patent ID: 7171206

Claim:
A method of transferring a communication session established between a content server and a mobile device in a first service area of a communication network comprising a plurality of service areas, each service area being associated with a transcoding proxy for transcoding content provided during a communication session established in said service area to and from a format suitable for the mobile device, the method comprising: transferring the relaying of the communication session from the first transcoding proxy associated with a first service area of said plurality of service areas to a second transcoding proxy associated with a second service area of said plurality of service areas; receiving from the mobile device in the first service area a transfer request message; determining a group comprising transcoding proxies associated with one or more service areas from said plurality, the one or more service areas being near to the first service area; and forwarding the transfer request message to the transcoding proxies from the group, in response to which at least one of said transcoding proxies sends a transfer reply message to the mobile device.