Stored program controlled digital public exchange

Stores as call center resources

Subscriber apparatus with ringer generator for sending ringer si

Subscriber controlled call list deregistration

Supply for a subscriber control system

Switch buttons activated from an external network

Switch controller for a telecommunications network

Switchboard terminal apparatus having a plurality of loop circui

Switching system

Switching system and method for network having a plurality of te

Switching system data inheritance method and system

Switching system for automatic call distribution and new...

Switching system reliability

Switching system with separate control connection to remote...

Switchless automatic call distribution system

Swivel cable mounting arrangement requiring no wiring feed throu

System and apparatus for generating within the premises a dial t

System and method for adding and integrating outbound calling an

System and method for allocating agent resources to a...

System and method for allocating contact resources to...