Voice over IP means that it will convert voice signals (audio) into digitized signals.
The telephone exchange will be connected to the company’s local network (LAN) and will be assigned a fixed IP address.
The IP devices will be connected via a PoE switch (Power Over Ethernet) on the computer network (LAN).
With this technology, it is even possible to connect IP devices to remote sites through a WAN (Wide Area Network).
…but it also uses the SIP protocol (Session Internet Protocol).
SIP devices that are connected on the company’s computer network can be used.
This SIP telephone exchange may also be connected to one or more SIP Telecom Providers (Operator offering very low prices).
There are two ways to connect to a SIP Provider:
- Via Internet: advantages: simple, quick setup, but no guarantee of voice quality (QoS).
- Via a Backbone (network similar to the Internet, but the management of this network is governed by a single entity): advantages: higher data rates, QoS (Quality of Service to prioritize voice).