One of the latest spin offs of business VoIP technology is the Hosted PBX. This technology allows small and medium sized businesses to have a sophisticated telephone system without the investment in telephone equipment. In fact, the entire telephone system is operated and maintained by your Voice-over-IP service provider. A hosted PBX lets employees work from their home, a hotel or on their cell phone while still being connected to the same office telephone system. Just like a Traditional telephone system, you can transfer callers, put them on hold with music, set up conference calls or have the phone answered by an automated attendant who can direct callers to different departments.