Private Integrated Services Network (PISN) - Specification, functional model and information flows - Call identification and call linkage additional network features [ISO/IEC 21888 (2001) modified]
Private Integrated Services Network (PISN) - Specification, functional model and information flows - Call identification and call linkage additional network features [ISO/IEC 21888 (2001) modified]
Private Integrated Services Network (PISN) - Specification, functional model and information flows - Call identification and call linkage additional network features [ISO/IEC 21888 (2001) modified]
