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ITU-T E Suppl.9 (10/1976) عربي | 中文 | English | Español | Français | Русский An experimental test design for the determination of inexperienced user difficulties in setting up international calls using nationally available instructions Approval date: 1976-10-08 Approval process: WTSA Status: Superseded Maintenance responsibility: ITU-T Study Group 2 Further detail(s): Patent statement(s) EditionsRelated supplement(s) Ed. ITU-T Recommendation Status Summary Table of Contents Download 3 E-300 series Suppl. 5 (10/1984) In force here here here 2 E-300 Suppl. 5 (11/1980) Superseded - - Not available 1 E Suppl.9 (10/1976) Superseded - - Not available ITU-T Supplement Title Status Summary Table of contents Download E Suppl. 3 (12/1972) Special service observation data Superseded - - Not available E Suppl.4 (10/1976) Various tones used in national networks Superseded - - Not available E Suppl.10 (10/1976) List of possible supplementary telephone services liable to be put at the disposal of subscribers Superseded - - Not available E Suppl.5 (10/1976) North american precise audible tone plan Superseded - - Not available E Suppl.6 (10/1976) Treatment of calls considered as “terminating abnormally” Superseded - - Not available E Suppl.9 (10/1976) An experimental test design for the determination of inexperienced user difficulties in setting up international calls using nationally available instructions Superseded - - Not available E Suppl.8 (10/1976) Use of computers for network planning and circuit group dimensioning Superseded - - Not available E Suppl.1 (12/1972) Table of the Erlang formula Superseded - - Not available E Suppl.1 (10/1976) Table of the Erlang loss formula Superseded - - Not available E Suppl.2 (12/1972) Curves showing the relation between the traffic offered and the number of circuits required Superseded - - Not available E Suppl.2 (10/1976) Curves showing the relation between the traffic offered and the number of circuits required Superseded - - Not available E Suppl.7 (10/1976) Information on traffic routing in the international network Superseded - - Not available