DEVICE FOR LOCALLY ROUTING LOCAL TRAFFIC WITHIN A RADIO COMMUNITY NETWORK BY DETECTION IN DOWNLINK FRAME COPIES OF DATA CORRESPONDING TO UPDATED FRAME COPIES

摘要

A device (D) is dedicated to the routing of local traffic between communication terminals (T1, T2) supporting the same type of codec, for a traffic router (R1) connected, via a portion of the transmission network, to a network radio communication system comprising an MSC. This device (D) comprises loaded processing means, when establishing a first upstream traffic channel between a calling terminal (T1) and the MSC and a second downstream traffic channel between the MSC and a terminal. called (T2), i) storing, for a selected duration, so-called upstream and downstream copies of successive traffic frames, carried respectively in the first upstream traffic channel and in at least one downstream traffic channel, and then ii) detecting the stored downlink copies those having data having a relationship with stored upstream copies; and iii) if a selected number of such downlink copies are detected in a selected time interval, to instruct the traffic router (R1) to locally insert into frames, to the second downlink channel, the payload data contained in the traffic frames conveyed in the first upstream traffic channel local routing, and suspend the transmission to the MSC at least useful data fields relating to the call considered.