Data e.g. voice data, transmission method for e.g. global system for mobile communications, involves analyzing part of signaling messages, and triggering local loopback operation of part of data exchanged between caller and called party

摘要

The method involves detecting whether a caller and a called party of a communication are located in a common local zone (406) of a cellular network based on a detection strategy, and analyzing a part of signaling messages. A local loopback operation (421) of a part of the data exchanged between the caller and the called party is triggered, if a detecting phase confirms local nature of the communication between the caller and the called party. Independent claims are also included for the following: (1) a cellular network (2) a local adopter equipment (3) a local detector equipment.