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Influencing the efficiency rate of the international network by different modes of handling ineffective call attempts

: Evers, R.; Manz, K.

Association of Communication Engineers -ACE-; Institute of Electrical and Electronics Engineers -IEEE-:
International Switching Symposium 1974. Symposium record : Munich, West Germany, 9-13 Sept 1974
München, 1974
International Switching Symposium <1974, München>
Conference Paper
Fraunhofer HHI ()
automatic telephone systems; modelling; telephone networks; efficiency rate; ineffective call attempts; call offer; automatic answering; automatic repeating devices; international telephone service; simulation model; subscriber behaviour; simplifications

Describes the procedure of establishing international subscriber-dialled connections considering repeats when call attempts have not succeeded. The objective of the investigation is to find out the impact of subscriber behaviour when facing call failure, and of some modified procedures such as call offer, automatic answering and automatic repeating devices. A simulation model offers the possibility of deciding which parameters of subscriber behaviour have the main influence to the traffic and which simplifications can be made. First results are presented.