Telephone exchange system and switching connection method improv
Telephone line communications control system
Telephone line communications control system
Telephone line communications control system with dynamic call s
Telephone networking system
Telephone services
Telephone speech control system, intermediate processing...
Telephone system
Telephone system having multiple administrators of switching...
Telephone tie trunk driver circuit
Telephone voice messaging system and method using off-hook...
Telephone voice messaging system and method using off-hook...
Telephony control system with intelligent call routing
Telephony control system with intelligent call routing
Telephony transitioning system
Telephony transitioning system
Terminal adapter
Third party call control
Traffic control method for intelligent network services
Transaction sets for automated electronic ordering of...