ITU-T Recommendation E.169.2 Series E: Overall network operation, telephone service, service operation and human factors… Application of Recommendation E.164 numbering plan for universal international premium rate numbers for the international …

ITU-T Recommendation E.169.1 Series E: Overall network operation, telephone service, service operation and human factors… Application of Recommendation E.164 numbering plan for universal international freephone numbers for international freephone … ITU-T Recommendation E.169 Series E: Overall network operation, telephone service, service operation and human factors… Application of Recommendation E.164 numbering plan for universal international numbers for international telecommunications services … Руководство по пректированию, расчету и методам контроля газоходов и ванн из бипластмасс ITU-T Recommendation E.169.3 Series E: Overall network operation, telephone service, service operation and human factors… Application of Recommendation E.164 numbering plan for universal international shared cost numbers for the international … CCITT Recommendation E.170 Telephone network and ISDN. Operation, numbering, routing and mobile service. Traffic routing ITU-T Recommendation E.171 Telephone network and ISDN. Operation, numbering, routing and mobile service. International telephone routing plan