ITU-T Recommendation E.451 Series E: Overall network operation, telephone service, service operation and human factors. Network management – Checking the quality of the international telephone service. Facsimile call cut-of performance

ITU-T Recommendation E.450 Series E: Overall network operation, telephone service, service operation and human factors. Quality of service, network management and traffic engineering… Facsimile quality of service on public networks – General aspects ITU-T Recommendation E.440 Telephone network and ISDN. Quality of service, network management and traffic engineering. Customer satisfaction point ITU-T Recommendation E.439 Series E: Overall network operation, telephone service, service operation and human factors. Quality of service, network … Test call measurement to assess N- ISDN 64 kbit/s circuit-switched bearer service UDI in operation ITU-T Recommendation E.452 Telephone network and ISDN. Quality of service, network management and traffic engineering. Facsimile modem speed reductions and transaction time ITU-T Recommendation E.453 Telephone network and ISDN. Quality of service, network management and traffic engineering. Facsimile image quality as corrupted by transmission-induced scan line errors ITU-T Recommendation E.454 Series E: Telephone network and ISDN. Quality of service, network management and traffic engineering… Transmission performance metrics based on Error Correction Mode (ECM) facsimile