Code of China Chinese Standard Classification Professional Classification ICS Classification Latest
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YD/T 1193.2-2002 Bearer independent call control specificaiton - Part 2 : general function and format of messages and parameters for BICC 1500.0 via email in 1~10 business day valid
YD/T 1193.4-2002 Bearer Independent Call Control(BICC) specification--Part 4:Application transport Mechanism(APM) tunneling and IP bearer control protocol of BICC 495.0 via email in 1~5 business day valid
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