Interswitch line circuit

Details Interswitch line circuit Interswitch line circuit

H - Electricity

04

M

324/59, 379/67

H04M 7/00 (2006.01) H04M 3/22 (2006.01) H04M 19/02 (2006.01) H04Q 1/38 (2006.01)

Patent

CA 1244166

INTERSWITCH LINE CIRCUIT ABSTRACT OF THE DISCLOSURE A tip-ring interface that utilizes a single detector to detect ringing, forward loop current, and reverse loop current. In one embodiment, forward or reverse battery state may be detected when on-hook.

494040

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