Line switching apparatus and method
Local control of call features in a telephone system
Local control of call features in a telephone system
Local exchange subscriber line conferencing method
Local number portability service saver
Local on-hold information service with user-controlled...
Local routing management in a telecommunications network
Local routing management in a telecommunications network
Locale based call forwarding
Locale based call forwarding with automated creation of new...
Location-based forwarding
Location-based ringbacks
Long distance phone tag service
Low cost migration to a VoIP system