ITU-T Recommendation E.177 Series E: Telephone network and ISDN. Operation, numbering, routing and mobile services – International operation – International routing plan. B-ISDN routing

ITU-T Recommendation E.175 Telephone network and ISDN. Operation, numbering, routing and mobile service. Models for international network planning ITU-T Recommendation E.174 Telephone network and ISDN. Operation, numbering, routing and mobile service. Routing principles and guidance for universal personal telecommunications (UPT) CCITT Recommendation E.173 Telephone network and ISDN. Operation, numbering, routing and mobile service. Routing plan for interconnection between public land mobile networks and fixed terminal networks ITU-T Recommendation E.180/Q.35 Series E: Overall network operation, telephone service, service operation and human factors… Series Q: Switching and signalling. International automatic… Technical characteristics of tones for the telephone service ITU-T Recommendation E.181 Telephone network and ISDN. Operation, numbering, routing and mobile service. Customer recognition of foreign tones ITU-T Recommendation E.182 Series E: Overall network operation, telephone service, service operation and human factors. Operation, numbering, routing… Tones in national signalling systems. Application of tones and recorded announcements in telephone ...