Telephone installation, an internet service provider...
Telephone interface for communicating with embedded devices...
Telephone line access apparatus
Telephone line access device for main distribution frame
Telephone line access system for main distribution frame
Telephone line carrier system
Telephone line circuit and system
Telephone line interface circuit
Telephone management system and method
Telephone management system and method
Telephone network coupler
Telephone network interface bridge between data telephony...
Telephone network local access using data messaging
Telephone or data switching system with variable protocol inter-
Telephone service system in a asynchronous transfer mode private
Telephone service via networking
Telephone signal multiplexing system
Telephone signal transmission device
Telephone station carrier system
Telephone station set