Multiplex communications – Wide area network – Packet switching
Patent
1984-08-06
1987-08-25
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
370 58, 379333, H04Q 1100, H04Q 1104
Patent
active
046897836
ABSTRACT:
A digital satellite exchange for connecting analog and digital subscriber lines comprises a digital control unit and subscriber line digital concentrators of at least one of the following types: local analog subscriber line type, remote analog subscriber line type, local digital subscriber line type, remote digital subscriber line type, remote analog/digital subscriber line type. Each concentrator is connected to the control unit by a multiplex link. The control unit concentrates the multiplex links and is connected to a digital subscriber exchange by a further multiplex link.
REFERENCES:
patent: 4021619 (1977-05-01), Potter et al.
patent: 4309766 (1982-01-01), Lechner et al.
patent: 4327436 (1982-04-01), Ohara et al.
patent: 4571721 (1986-02-01), Yasui et al.
IEEE Transactions on Communications, vol. COM-27, No. 7, Jul. 1979 (New York, US) H. Sueyoshi et al., "System Design of Digital Telephone Switching NEAX61"-pp. 993-1001.
Colloque International de Commutation, May, 1979, (Paris-FR) R. Scheller et al., "A Local PCM Switching System for Voice and Data"-Session 22A, pp. 419-426, especially p. 422 paragragh 4 to p. 423, paragraph 4,2.
Proceedings of the IEEE, vol. 66, No. 2, Feb. 1978, (New York-US), D. K. Melvin "Microcomputer Applications in Telephony", pp. 182-191.
Compagnie Industrielle des Telecommunications Cit-Alcatel
Olms Douglas W.
Scutch III Frank M.
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