Telephonic communications – Plural exchange network or interconnection – Interexchange signalling
Patent
1987-08-19
1989-03-07
Brown, Thomas W.
Telephonic communications
Plural exchange network or interconnection
Interexchange signalling
379207, 379221, 379279, H04M 700, H04Q 3545
Patent
active
048113883
ABSTRACT:
Telephone network comprised of a plurality of nodes which are coupled to each other by means of transmission lines, each node comprising a switching module, a central module and at least one peripheral module and an operational maintenance control unit, which can supply a command consisting of a sequence of sub-commands for changing the data in one or more nodes in the network being coupled to one of the nodes, there being coupled to one of the nodes a central back-up memory containing a network register for the sub-commands which are common to all the nodes of the network, local registers for specific sub-commands for always one node, one local register being provided for each node, and also a sequence number Table from which a unique sequence number can be assigned to each sub-command intended for storage either in the network register or in one of the local registers and a last relevant sequence number Table of the sub-command last registered for each of the node units being included, the sub-commands being stored in the relevant registers as soon as the operational maintenance command is produced by the control unit and before these sub-commands are transferred to the relevant node units.
REFERENCES:
patent: 3591724 (1971-07-01), Yalsu et al.
patent: 4284852 (1981-08-01), Szybicki et al.
patent: 4575839 (1986-03-01), Ogata et al.
"New Customer-Defined Network Service", McBerger et al., Telephony, Mar. 10, 1986, pp. 50, 52, 54, 58, 60.
"Private Networking with SOPHO-TBX and SOPHO S Systems", J. van Gelder et al., Phillips Telecommunication Review, vol. 43, No. 4, Dec. 1985, pp. 237-251.
"SOPHO S2500, the High-Range Communication Switch", M. Geelhoed et al., Philips Telecommunication Review, vol. 43, No. 2, Jun. 1985, pp. 92-113.
Westerhof Rudolphus H. W. M.
Willemstein Ruud A. S.
Barschall Anne E.
Briody Thomas A.
Brown Thomas W.
Haken Jack E.
U.S. Philips Corporation
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