Patent ID: 8301131

Claim:
Method of transmitting data in a mobile radio communication cellular network, wherein: setting up, maintaining and terminating a data communication channel between a caller and a called party located in said cellular network are implemented by exchanges of signalling messages, a caller and/or a called party each being located in a local zone of said cellular network, the method comprises: a first detecting phase if the caller and the called party of said communication are located in the same local zone of said cellular network, according to a detection strategy including a step of analysing all or a portion of said signalling messages by a adapter device located upstream of at least one base station of the cellular network and downstream of a base station controller; and a second phase of triggering a local loopback operation of all or a portion of data exchanged between the caller and the called party, in a case where said detecting phase confirms a local nature of said communication between the caller and the called party.