Voice over IP (VoIP) was developed in order to provide access to voice communication in any place around the world. It uses a packet switched network, like the internet, to pass digitized voice data from one point to another. This allows telecommunications companies to squeeze more conversations in the same amount of bandwidth. Even home users can use VoIP handsets, or through computers via software, to call other people who are online for free.
Utilizing VoIP in a PBX system can result in a seamless integration where users can use the same phone to dial outside numbers or call a branch office in another country via VoIP. An advanced PBX system can lessen the phone bill of a company by such a huge margin that most companies who needs to replace their older PBX systems have opted to add VoIP support by purchasing and installing an IP PBX system.
VoIP is the future of PBX systems and the companies who utilize them. It comes with a lot of advantages with no real drawback. The cost reduction alone is more than enough to sway even the most hesitant consumer.
Summary:
1. PBX is a small telephone network that companies can use while VoIP is a new telephony system that is beginning to gain widespread acceptance
2. Most older PBX systems do not have VoIP support while some of the newer ones, called IP PBX, supports VoIP
3. VoIP when implemented in a PBX system can result in a seamless integration
