Method of operation of a nodal telephone and data communication network to provide specific facilities in changeable domains of the network
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United States of America Patent
Stats
-
Mar 7, 1989
Grant Date -
N/A
app pub date -
Jun 17, 1987
filing date -
Jul 1, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method of operation of a telephone and data PABX communication network which comprises a set of nodes interlinked by means of TDM-transmission lines. Each node serves an individual switching exchange and comprises its own control module. To a user the network is manifested as a single system. The invention flexibly sub-divides such a system, allowing the offering of fully integrated specific facilities within the boundaries of domains that can be arbitrarily defined within the total network configuration. Local data is provided in each node for a specific facility-bounded program which dictates the operation of a control module of the node. Such data contains an adjustable address file having the addresses of those nodes over which a call or a specific facility to which such program relates can be accepted. Nodes to which a specific facility is extended and whose addresses are incorporated in the file of each such node define a fully integrated domain wherein the relevant specific facility can be offered.
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