H - Electricity – 04 – M
Patent
H - Electricity
04
M
379/22
H04M 1/50 (2006.01) H04M 1/31 (2006.01) H04Q 1/50 (2006.01)
Patent
CA 1085074
SOLID STATE PULSING APPARATUS FOR PULSING SELECTED LINE RELAY TERMINALS Abstract of the Disclosure A solid state pulsing circuit and an adapter connector for pulsing the counting and register advance terminals of the L-(line) relay of an originating register in accordance with the digit nature of received DTMF signals is disclosed. The pulsing circuit includes a pair of solid state switches adapted to be alternatively actuated and the adapter connector connects the pulsing circuit to the counting and register advance terminals of the line relay without affecting the normal operation of the relay. Complementary MAKE and BREAK signals derived from the serial pulse output of a DTMF receiver operate the solid state pulsing circuit such that the pulsing circuit alternately pulses (opens and grouds) the counting and register advance terminals of the line relay in accordance with the production of pulses by the DTMF receiver. Other relay terminals (i.e., the terminals controlling the slow release supervisory relay adapted to detect the ON HOOK state of a subscriber's telephone) are not pulsed, whereby annoying line clicks are avoided.
292464
Smart & Biggar
Tel-Tone Corporation
LandOfFree
Solid state pulsing apparatus for pulsing selected line... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Solid state pulsing apparatus for pulsing selected line..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Solid state pulsing apparatus for pulsing selected line... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-622674