Facsimile apparatus and alarm system with cordless telephone set
Facsimile apparatus with cordless phone, a ring signal detection
Facsimile radio communication system
Facsimile radio communication system having multiple data speeds
Facsimile transmission in a digital cellular radio network
Fault processing system for processing faults of producing point
Fiber optic based subscriber terminal
Fiber optic based subscriber terminal
Fiber optic telephone line extension system
Fiber to the curb and fiber to the neighborhood power...
Fixed cellular technical with a distinctive dial tone to indicat
Flow control method for short message service - busy subscriber
Foldable radio telephone set with rotary selector integral with
Four wire modem signal switching for voice and data applications
Full duplex speakerphone for radio and landline telephones
Full motion video telephone system