Introduction

IP telephony is a technology that relies on computer networks as its communication medium.

This technology can be used by companies looking for flexibility in deployment, and in the mobility and productivity of its employees.

It can be used on over the Internet to reduce communication costs through free inter-site calls and through using an Internet telephony provider.

An IP private branch exchange (PBX-IP) is a computer equipped with specialized software and hardware to connect it with traditional lines. PBX-IP provides at least the same functionalities as a traditional private branch exchange.

IP exchanges and IP phones are connected to the company network sharing the same cable infrastructure.