What is Hosted PBX?
A PBX (Private Branch Exchange) includes both the hardware and software that directs calls between a company’s phones and the PSTN (public switched telephone network). Instead of using traditional landlines to make and receive calls, hosted PBX uses the Internet to transmit calls.
Hosted PBX business phone service provides business customers with a complete telephone system (phones and service) without requiring them to install and manage complicated and costly equipment. Both the service and PBX are fully managed off-site by the service provider.
What is SIP Trunking?
Session Initiation Protocol (SIP) is a VoIP service that connects a company's PBX telephone system to the PSTN via an IP connection (the Internet) to the service provider. This IP connection can be used to carry both voice and data traffic (i.e., Web and e-mail), and as a result, eliminating the need for costly T-1s and PRIs.