Abandoned call control and indication
Access to capabilities of other telephone stations
Access to extended telephone services via the internet
Access to unsubscribed features
Accessing a calendar server to facilitate initiation of a...
Active talker display for web-based control of conference calls
AD-HOC conferencing method
Adaptation of the call sequence by analysis of the history...
Adaptive call routing for multiple telephony terminals
Adaptive feature behavior
Adaptive rule-based mechanism and method for feature...
Adaptive, multi-channel teleconferencing system
Address information-exchange system, communication terminal...
Adjunct controller for a telephone system
Adjusting music length to expected waiting time while caller...
Advanced call sequencing service
Advanced call waiting processing
Advanced call waiting processing
Advanced call waiting processing
Advanced conference drop