33.040.35 Telefonu tīkli

Information technology Telecommunications and information exchange between systems Private Integrated Services Network Specification, functional model and information flows Call Interception additional network feature

Information technology Telecommunications and information exchange between systems Private Integrated Services Network Inter-exchange signalling protocol Call Interception additional network feature

Information technology Telecommunications and information exchange between systems Private Integrated Services Network Specification, functional model and information flows Transit counter additional network feature

Information technology Telecommunications and information exchange between systems Private Integrated Services Network Inter-exchange signalling protocol Transit counter additional network feature

Information technology Telecommunciations and information exchange between systems PISN mobility-general principles and services aspects

Information technology Telecommunications and information exchange between systems Private Integrated Services Network Specification, functional model and information flows Wireless Terminal Location Registration supplementary service and Wireless Terminal Information Exchange additional network feature

Information technology Telecommunications and information exchange between systems Private Integrated Services Network Inter-exchange signalling protocol Wireless Terminal Location Registration supplementary service and Wireless Terminal Information exchange additional network feature

Information technology Telecommunications and information exchange between systems Private Integrated Services Network Specification, functional model and information flows Wireless terminal call handling additional network features

Information technology Telecommunications and information exchange between systems Private Integrated Services Network Inter-exchange signalling protocol Wireless terminal call handling additional network features

Information technology Telecommunications and information exchange between systems Private Integrated Services Network Specification, functional model and information flows Wireless Terminal Authentication supplementary services (WTAT and WTAN)

Information technology Telecommunications and information exchange between systems Private Integrated Services Network Inter-exchange signalling protocol Wireless Terminal Authentication supplementary services

Information technology Telecommunications and information exchange between systems Private Integrated Services Network Specification, functional model and information flows Message Waiting Indication supplementary service