Telecommunications system, particularly a telephone exchange sys

Telephonic communications – With usage measurement – Call traffic recording or monitoring

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379198, 379279, H04M 1526

Patent

active

046266240

ABSTRACT:
In order to avert overloads of control units for groups of subscriber-associated or call-associated switching devices, the data required for such purpose and pertaining to the traffic load are respectively acquired within one of such groups. These data are the occurring occupations of calling subscribers. A respective counter, provided per group, is incremented with such data, the counter being continuously deincremented, cyclically, and transmitting an overload signal upon attaining a limiting value. Occupations that directly lead to the formation of the overload signal are rejected. Therefore a prophetic overload defense is provided.

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Lucky, "A Flexible Experimental Digital Switching Office", Int. Zurich Seminar on Digital Communications", Proc. IEEE, Cat. 78, No. 9, pp. A4.1-A4.4.
Horiki et al., "Design Philosophies on Local Digital Switching Systems", Int. Zurich Seminar on Digital Communications, Proc. IEEE, Cat. 78, No. 9, pp. B2.1-B2.5.

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