228279 ⎘
Metering arrangements; Time controlling arrangements; Time indicating arrangements Voice over IP billing
Method and apparatus for enabling global telephony capabilities in communication networks
#2System and method for providing least-cost routing of voice connections between home and foreign networks using voice-over-IP infrastructure
#3System, method and device for managing VOIP telecommunications
#4Method and apparatus for session tracing and session logging in a peer-to-peer communication environment
#5Method and apparatus for enabling global telephony capabilities in communication networks