ITU-T Recommendation E.846 Telephone network and ISDN. Quality of service, network management and traffic engineering. Accessibility for 64 kbit/s circuit switched international end-to-end ISDN connection types

ITU-T Recommendation E.845 Telephone network and ISDN. Quality of service, network management and traffic engineering. Connection accessibility objective for the international telephone service CCITT Recommendation E.830 Telephone network and ISDN. Quality of service, network management and traffic engineering. Models for the specification, evaluation and allocation of serveability and service integrity CCITT Recommendation E.820 Telephone network and ISDN. Quality of service, network management and traffic engineering. Call models for serveability and service integrity performance CCITT Recommendation E.850 Telephone network and ISDN. Quality of service, network management and traffic engineering. Connection retainability objective for the international telephone service ITU-T Recommendation E.855 Telephone network and ISDN. Quality of service, network management and traffic engineering. Connection integrity objective for international telephone service ITU-T Recommendation E.860 Series E: Overall network operation, telephone service, service operation and human factors. Quality of telecommunication services: concepts, models, objectives and dependability planning… Framework of a service level agreement