VoIP Network Elements

VoIP Network Elements 

In order to create a Voice over IP infrastructure, three basic components are needed. The
end user needs an IP phone, also known as terminal.
This can either be an IP phone or an IP client installed on user's PC. The centre element is
an IP public branch exchange server (IP-PBX server) together with a gatekeeper. They are
responsible for connection request management and switching.
Finally, a gateway is needed as a third component to establish a packet-oriented connection
between the IP network elements and the Public Switched Telecommunication Network,
PSTN. Additionally, a Multi-point Control Unit, MCU, can be implemented to support voice
and video conferences with more than two terminals.

VoIP Network Elements