ISO IEC 15052:2003 pdf download - Information technology — Telecommunications and information exchange between systems — Private Integrated Services Network — Inter-exchange signalling protocol — Recall supplementary service

ISO IEC 15052:2003 pdf download – Information technology — Telecommunications and information exchange between systems — Private Integrated Services Network — Inter-exchange signalling protocol — Recall supplementary service. ISO/IEC 11582:2002, Information technology – Telecommunications and information exchange between systems – Private Integrated Services Network – Generic functional protocol for the support of supplementary services – Inter-exchange signalling procedures and protocol ISO/IEC 13865:2003, Information technology – Telecommunications and information exchange between systems – Private Integrated Services Network – Specification, functional model and information flows – Call Transfer supplementary service ISO/IEC 13868:2003, Information technology – Telecommunications and information exchange between systems –...