YD/T 1209-2002 900/1800MHz TDMA digital cellular mobile telecommunications network Technical requirement of Service Switching Point (SSP) for CAMEL2 (English Version)
Professional Standard - Post and Telecommunication
Latest
YD/T 1209-2002
YD/T 1209-2002 history
2002YD/T 1209-2002 900/1800MHz TDMA digital cellular mobile telecommunications network Technical requirement of Service Switching Point (SSP) for CAMEL2