Data pulse register/sender for a TDM switching system

Details Data pulse register/sender for a TDM switching system Data pulse register/sender for a TDM switching system

1977-01-26

1979-01-09

Brown, Thomas W.

179 18EB, H04J 312

Patent

active

041339800

ABSTRACT:
A dial pulse register/sender for use in a telephone system operating in time frames each consisting of a plurality of time slots. The register/sender is capable of detecting and sending supervisory signals in dial pulse format for each time slot. The register/sender includes an integrator for filtering contact bounce, a timer for detecting a change of state in the supervisory signal, a pulse counter for counting the digits received, and sender for sending supervisory signals. Each time slot has one memory location and sequentially uses common logic of the register/sender.

REFERENCES:
patent: 3601546 (1971-08-01), Lee
patent: 3760116 (1973-09-01), O'Toole et al.
patent: 3851110 (1974-11-01), Kelly et al.
patent: 3941936 (1976-03-01), Graham et al.

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