H - Electricity – 04 – M
Patent
H - Electricity
04
M
379/57
H04M 3/22 (2006.01) H04M 7/00 (2006.01)
Patent
CA 1249086
18 IMPROVED THREE RELAY C.O. TRUNK INTERFACE ABSTRACT OF THE DISCLOSURE An interface system having a single detector to detect incoming signalling including ringing, tip ground, forward loop current, and reverse loop current. Relays and bias control are utilized to perform outgoing signalling and for configuring the system to detect the various incoming signalling states with a single detec- tor.
499256
D.a.v.i.d. Systems Inc.
Kirby Eades Gale Baker
LandOfFree
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