Cisco Voice & Unified Communications Overview

Get an overview of Voice & Unified Communications where we discuss the hardware, components, protocols, voice gateways, SIP support, and QoS.

[@edbraindead1]

This is an awesome video. Thank you for the great explanations.

[@ctallball3308]

thanks for the video

[@aiesami]

thanks for increasing my interest in ccna voice...

[@joegabe1974]

Great job

[@ryanodonnell7068]

do you need a gateway if no external calls?

[@RouteHub]

No, you do not need a voice gateway if external calls will not be placed nor received.