PBX stands for "Private Branch Exchange." A PBX lowers telephone costs by assigning extensions to various employees, instead of paying for separate phone lines. Depending on your business's needs, an on-premise VoIP PBX, IP-PBX, or digital PBX system, may fit your needs better than a hosted PBX service. Hardware companies can make a cost difference with Cheap IP PBX.

An on-premise PBX phone system gives you:

More features flexibility, because the equipment is on-site and owned by your company.
More control over managing your phone system's daily operations.
No surprises. If you own your telephone system, you know what to expect from it.
A simple way to expand your phone system when your company expands.