Multiple telephone outlet box with surge protection
Multiple terminal message indicator for a telecommunications...
Multiple tone detection using out-of-band background detector
Multiple user telephone accounting
Multiple voice channel communications
Multiple voice channel communications
Multiple voice network access provider system and method
Multiple-function digital telephone set in a private branch...
Multiple-service offering communication terminal and multiple-se
Multiplex transmission of audio signal and video signal through
Multiplexed data channel controlled telephone system
Multiplexed terminal for monitoring and controlling a plurality
Multiplexing and demultiplexing of narrowband and broadband...
Multiply accommodated message relaying for hearing impaired call
Multipoint simultaneous voice and data services using a...
Multiposition detenting hinge apparatus
Multiprocessor computing system featuring shared global control
Multiprocessor computing system featuring shared global control
Multiprocessor computing system featuring shared global control
Multipurpose analog telephony channel test facility method and a