Features of a proposed synchronous data network

ABSTRACT

Marketing surveys on data communication have indicated the possible need for a new data service. Technical studies have resulted in a number of detailed proposals for providing a service which, although functionally distinct, is physically integrated with other telecommunications services. The proposed network utilises synchronous digital transmission with a processor controlled T.D.M. switching structure. A range of speeds is available. Users data bytes are structured in 'envelopes' to provide an in-band control signalling facility. The use of a processor for switch control gives greater flexibility, allows the implementation of sophisticated diagnostics, and, with high speed inter switch signalling, reduces overall call set up times. The proposed network is hybrid in that it can operate in a conventional circuit switched mode, or operate in a 'packet' switched mode. Extensive multiplexing is used to increase transmission utilisation and reduce local area transmission costs.

INDEX TERMS

Primary Classification:
  C. Computer Systems Organization
  C.2 COMPUTER-COMMUNICATION NETWORKS
      C.2.1 Network Architecture and Design
          Subjects: Packet-switching networks

Additional Classification:
  B. Hardware
  B.4 INPUT/OUTPUT AND DATA COMMUNICATIONS
      B.4.3 Interconnections (subsystems)
          Subjects: Asynchronous/synchronous operation

General Terms:
Design, Theory