Conference terminal with echo reduction for a voice...

Conferencing additional callers into an established voice...

Conferencing circuit, and associated method, for automatically c

Conferencing method for telephone switch system

Conferencing with a calling party

Configurable analog front end for communication systems

Configurable charging system for a telecommunications...

Configurable digit collection for various signaling protocols

Configurable DSL modem for high bit rates

Configurable echo canceller

Configurable I/O panel or telephony systems

Configurable multi-port modem to achieve a high bit rate in...

Configurable profiling of data

Configurable telephone interface for electronic devices

Configurable telephone line distribution modules for...

Configuration for charging in a telephone network and method...

Configuration tracking system

Configuring user interfaces of call devices

Confirming identity of telephone caller

Congestion control method and system in an exchange