PC-to-phone for least cost routing with user preferences

Per-call quality of service monitor for multimedia...

Personal communication apparatus with call switching modem and p

Personal communication device usable in two communication modes

Personal communication service network interface device

Personal computer with transmission and reception handset

Personal control of address assignment and greeting options...

Personalized LCD directory

Phone connector component operationally connectable through...

Physical layer router system and method

Physical medium dependent sub-system with shared resources...

Platform for coupling a circuit-switched network to a data...

Point to multipoint network

Point-to-point data transport over the internet utilizing...

Point-to-point protocol termination device

Policy based mechanisms for selecting access routers and...

Policy control and billing support for call transfer in a...

Policy enforcement switching

Port policy management for calls in a centralized call...

Port policy management for calls in a centralized call...