Process for flexible rate charging for existing connections
Process for making connections and accounting for...
Process for signalling cost information upon connection...
Process, exchange, charge computer, charge billing computer...
Processes and systems for dynamically measuring switch traffic
Processing of telecommunications call billing data
Professional services billing personal identification number
Programmable access carrier selection terminal
Programmable threshold alert
Providing called number characteristics to click-to-dial...
Providing effective advertising via synchronized telephone...
Public telephone system
Public telephone system using a prepaid card to enable communica