ITU E.100:1988
ITU E.100:1988 Definitions Of Terms Used In International Telephone Operation
Table of Contents
1Telephonecall2Callrequest
3Telephonemessage
4Telephonecircuit(internationalortrunkcircuits)
5Internationalexchange
6Internationaltransitexchange
7Preparationoperating
8Demandoperating
9Automaticservice
10Routes
11Controllingexchange
12Controllingoperator
13Successivephasesofacall
14Durationofacall(conversationtime)
15Chargeableduration-chargedduration
16Holdingtimeofaninternationalcircuit
17Answeringtimeofoperators;requesttransmission
time;delaytime;setting-uptimesofaninternational
call