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ITU-T E-300 series Suppl. 5 (10/1984)

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Modelling of an experimental test design for the determination of inexperienced user difficulties in setting up international calls using nationally available instructions, or to compare different sets of instructions
The objects of the tests are to obtain information on inexperienced user difficulties and to test the efficacy of different forms of instruction available for use in any country by observing, in a controlled laboratory environment, ordinary telephone users dialling live international calls.

Citation:	https://handle.itu.int/11.1002/1000/122
Series title:
Approval date:	1984-10-19
Approval process:	WTSA
Status:	In force
Maintenance responsibility:	ITU-T Study Group 2
Further details:	Patent statement(s)

EditionsRelated technical papers and reports

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2	E-300 Suppl. 5 (11/1980)	Superseded	-	-	Not available
1	E Suppl.9 (10/1976)	Superseded	-	-	Not available