Electronic mail system having integrated voice messages

Electronic memo pad for use with touch-tone telephones

Electronic messaging system with multiple personal greetings

Electronic network for telephone set

Electronic private branch exchanges

Electronic resistance memory

Electronic ring trip circuit

Electronic security alarm device

Electronic speech circuit for a central battery telephone set

Electronic subscriber junctor

Electronic subscriber line interface circuit

Electronic switch connected to intelligent peripheral while...

Electronic switching network connectable telephone system

Electronic switching system having call-forwarding function

Electronic telephone circuit

Electronic telephone circuit for subscriber-line

Electronic telephone client service provider system

Electronic telephone network

Electronic telephone network

Electronic telephone subscriber set