
Private Integrated Services Network (pisn) - Specification, Functional Model And Information Flows - Private User Mobility (pum) - Call Handling Additional Network Features (anfs)
出版:Polish Committee for Standardization

專家解讀視頻
Private Integrated Services Network (pisn) - Specification, Functional Model And Information Flows - Private User Mobility (pum) - Call Handling Additional Network Features (anfs)
出版:Polish Committee for Standardization
專家解讀視頻