Answer detection for IP based telephones using passive...
Automatic switching-back device for telephone circuit
Circuit arrangement for a digital telephone station
Communications station having hall effect device for...
Cradle switch for a telephone apparatus
Device for limiting the working voltage for mechanical switches
Device for limiting the working voltage mechanical switches in t
Handset detection device for use in telephones
Hanging latch hook mechanism for telephones
Hook switch actuator assembly
Hook switch status glitch filter
Hook-off detection device for a telephone handset
Infrared hookswitch for a telephone
Methods and apparatus for enabling portable telephone...
Nitinol hookswitch actuator
Off-hook telephone with temporary park feature
One-piece telephone hook switch operating mechanism
Pay telephone hook switch assembly
Personalized information service system
Portable radiotelephone support assembly