Telephone apparatus with a fixed telephone station coupled...

Details Telephone apparatus with a fixed telephone station coupled... Telephone apparatus with a fixed telephone station coupled...

H - Electricity

04

M

379/11

H04M 1/00 (2006.01) H04M 1/725 (2006.01) H04M 17/02 (2006.01)

Patent

CA 1240430

ABSTRACT OF THE DISCLOSURE A telephone apparatus, such as a public telephone, in which a voice and tone signals transmitting medium between a fixed station connected to a telephone line and a handset detachable from the station is free of disturbance. A modulation circuit for transmitting voice and tone signals from the telephone line to the handset and a demodulation circuit for transmitting voice signals from the handset to the telephone line are included in the station and are connected respectively to a demodulation circuit connected to an earphone of the handset and to a modulation circuit connected to a microphone of the handset, via two low frequency magnetic coupling means. The circuits contained in the handset are remote supplied by a power supply circuit included in the station, via third magnetic coupling means.

502682

Affiliated with

Also associated with

Rating

Telephone apparatus with a fixed telephone station coupled... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Telephone apparatus with a fixed telephone station coupled..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Telephone apparatus with a fixed telephone station coupled... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1311894