Tone applying line circuit

Details Tone applying line circuit Tone applying line circuit

H - Electricity

04

M

379/67

H04M 19/02 (2006.01) H04Q 1/444 (2006.01)

Patent

CA 1088686

TONE APPLYING LINE CIRCUIT ABSTRACT OF THE DISCLOSURE A circuit for efficiently applying tones or other signals to a line circuit which has a variety of conditions such as being split from the central office, and having a telephone set connect- ed thereto either on hook or off hook. The invention is comprised of a tip lead and a ring lead having one end for connection to a central office and another end for connection to a subscriber's telephone set. A low impedance signal source including line cur- rent conducting means is connected in series with the tip or ring lead. A switchable resistance is provided for connecting a cir- cuit path between the tip and ring leads at the telephone set end of the tip and ring lead. Preferably the low impedance signal source including the line current conducting means has a resis- tance which is 25% or less than the off hook impedance of the tele- phone set.

303989

Affiliated with

Also associated with

Rating

Tone applying line circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Tone applying line circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tone applying line circuit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1030591