Multiplex communications – Wide area network – Packet switching
Patent
1989-12-15
1992-11-03
Chin, Stephen
Multiplex communications
Wide area network
Packet switching
370 581, H04J 302
Patent
active
051611520
ABSTRACT:
A terminal for a telecommunications system provides access to one or two high-speed synchronous transmission lines by both low-speed transmission lines and subscriber lines. A core module includes interfaces to the high-speed lines, a time slot interchanger, an interface to the low-speed transmission lines, processors and overhead circuitry for supporting the terminal. An access module includes a plurality of line shelves connected to subscriber lines, each line shelf includes a pair of processors and for time slot assignors. A multi-link serial bus connects the time slot interchanger to the access module and to the low-speed interface and provides close coupling between the processors in the core module and the line shelves. The processors cooperate to groom subscriber information from said subscriber lines to and from time slots in said high-speed feeder line and said low-speed transmission line. Subscriber information may also be groomed between time slots of the high-speed feeder line and the low-speed transmission lines and between time slots within each subscriber line.
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S. Morita et al., "Elastic Basket Switching--A New Integrated Switching System for Voice and High-Speed Burst Data", International Switching Symposium 1987, Mar. 87, pp. 545-549.
P. Kretsch et al., "A Digital Cross-Connect System for Digital Data Circuits", IEEE Journal on Selected Areas in Communication vol. SAC-5, No. 1 Jan. 1987, pp. 26-32.
Aro Enn
Czerwiec Richard M.
Hurlocker Claude M.
Runyon V. Paul
Sanders Gus C.
Alcatel Network Systems, Inc.
Chin Stephen
Jung Min
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