IP Telephony transmits voice communications over the network using open, standards-based internet protocol.
As such it provides a way for you to extend consistent voice communication services to all your employees in their workspaces – on the main campus, at branch offices, remote or mobile.
Cisco Unified Communications call processing systems deliver, voice, video, mobility and presence services to IP Phones, media processing devices, VoIP gateways, mobile devices and multimedia applications.