... maintenance of GPRS Networks.--Physical interface: high-speed 2M, N × 64K, Frame Relay FR signaling link, 10M/100/1000M Ethernet (CLP ... ), 1000M (Opt) Ethernet interface;--Signaling protocol decoding: GTP-C / U, ... capability: WAP, MMS (MMS), RADIUS, and so on;--GPRS Process association analysis: PDP context activation, PDP context de-activate ...