Telecommunication signalling arrangement

Details Telecommunication signalling arrangement Telecommunication signalling arrangement

1986-02-06

1989-01-17

Brown, Thomas W.

Telephonic communications

Centralized switching system

Switching controlled in response to called station...

379230, 379284, H04M 706, H04Q 3545

Patent

active

047992565

ABSTRACT:
A circuit arrangement for telecommunication installations, in particular, telephone exchange installations is disclosed in which type information is sent ahead of each communication to be transmitted. In bidirectional communication transmission with different possible communication types, type information announcing the respective communication type is sent ahead. In the receiving equipment the beginning of the arrival of type information is recognized and immediately, that is, almost simultaneously, an assortment of type-specific message corresponding to each of the possible communication types is transmitted in the opposite direction, of which each indicates the readiness or non-readiness for receiving a communication of the respective type. From this and from the transmitted type information it is recognized following the transmission of type information and messages on both sides independently of each other but concordantly whether a communication transmission will subsequently occur, cannot occur or will be postponed to a later time.

REFERENCES:
patent: 4574284 (1986-03-01), Feldman et al.
patent: 4707832 (1987-11-01), Glenn et al.
Telcom Report, vol. 4 (1981), Special Issue, "EWSD Digital Switching System", pp. 7-12 and 22-29.

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