Right-of-way control circuit for key telephone...

Details Right-of-way control circuit for key telephone... Right-of-way control circuit for key telephone...

H - Electricity

04

M

379/33, 379/44

H04M 3/42 (2006.01) H04M 1/72 (2006.01) H04M 3/02 (2006.01) H04Q 3/00 (2006.01)

Patent

CA 1080867

TITLE RIGHT-OF-WAY CONTROL CIRCUIT FOR KEY TELEPHONE INTERCOMMUNICATION SYSTEM ABSTRACT A circuit for controlling multiple signalling sources within a key telephone system for the establishment of priorities. The circuit inhibits connection to, or permits disconnection of a secondary signal source from a selected amplifier whenever a primary signal source is connected to the same amplifier. Circuitry is also provided to indicate the disconnect condition.

274842

Affiliated with

Also associated with

Rating

Right-of-way control circuit for key telephone... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Right-of-way control circuit for key telephone..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Right-of-way control circuit for key telephone... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-933699