Use of a tone bus to provide polling and data distribution appar

Details Use of a tone bus to provide polling and data distribution appar Use of a tone bus to provide polling and data distribution appar

1984-03-30

1986-04-22

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 90, 370 60, 370 67, H04J 316, H04Q 1104

Patent

active

045846804

ABSTRACT:
A combined telecommunications and data communications system includes a digital switching network for allowing connections between one or more of a plurality of ports. The system described includes a tone module at one port which module includes a tone bus which can be connected to a plurality of other ports each associated with a terminal module. In the system a poll originating module is coupled to a given port of the switching network. The poll originating module can initiate a broadcast mode by transmitting a polling signal. Upon implementing the broadcast mode the switching network connects the polling originator module to the tone module. The tone module then transmits the polling signal during the broadcast mode to a plurality of ports. The polling request is decoded at each of the ports by means of a terminal interface module. In this manner each port will recognize a polling request and contain separate circuitry to respond to such a request through the switching network.

REFERENCES:
patent: 4281410 (1981-07-01), Agricola et al.
patent: 4293946 (1981-10-01), Kuras et al.
patent: 4340961 (1982-07-01), Capel et al.
patent: 4360911 (1982-11-01), Hardy
patent: 4446553 (1984-05-01), Webber
patent: 4472798 (1984-09-01), Hafer

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