Improvements in or relating to telephone line monitoring
Improvements relating to caller identification
Improvements relating to voice and data transmission
Improvements to digital subscriber line services
In-band signaling for routing
In-building pots filter arrangement
Inbuilding telephone communication system
Incoming call manager
Incoming caller information on self labeling telephone keys
Incoming communications forwarding technique utilizing a...
Independent customer service agents
Independently switched voice and data calls using a...
Indoor telephone network interface device
Indoor type telephone network interface device
Indoor xdsl splitter assembly
Inductor-less telephone line holding circuit giving high a....
Information accessory
Information assistance system and method for effectively...
Information display provided to calling party
Information dissemination systems and methods for use in a...