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ITU-T Supplement
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Title
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Status
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Summary
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Table of contents
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Download
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E Suppl. 3 (12/1972)
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Special service observation data
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Superseded
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-
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-
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Not available
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E Suppl.4 (10/1976)
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Various tones used in national networks
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Superseded
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-
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-
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Not available
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E Suppl.10 (10/1976)
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List of possible supplementary telephone services liable to be put at the disposal of subscribers
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Superseded
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-
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-
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Not available
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E Suppl.5 (10/1976)
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North american precise audible tone plan
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Superseded
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-
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-
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Not available
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E Suppl.6 (10/1976)
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Treatment of calls considered as “terminating abnormally”
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Superseded
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-
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-
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Not available
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E Suppl.9 (10/1976)
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An experimental test design for the determination of inexperienced user difficulties in setting up international calls using nationally available instructions
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Superseded
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-
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-
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Not available
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E Suppl.8 (10/1976)
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Use of computers for network planning and circuit group dimensioning
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Superseded
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-
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-
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Not available
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E Suppl.1 (12/1972)
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Table of the Erlang formula
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Superseded
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-
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-
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Not available
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E Suppl.1 (10/1976)
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Table of the Erlang loss formula
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Superseded
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-
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-
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Not available
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E Suppl.2 (12/1972)
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Curves showing the relation between the traffic offered and the number of circuits required
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Superseded
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-
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-
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Not available
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E Suppl.2 (10/1976)
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Curves showing the relation between the traffic offered and the number of circuits required
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Superseded
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-
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-
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Not available
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E Suppl.7 (10/1976)
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Information on traffic routing in the international network
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Superseded
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-
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-
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Not available
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