A hosted PBX is essentially a cloud-based phone system as it is hosted offsite and over the Internet rather than at the physical location of the business, resulting in cost savings and limited maintenance. As a hosted PBX is managed completely offsite, this eliminates the need to invest in software, hardware, training and day to day maintenance. There is little in the way of installation costs. There is no hardware at your location. The router/firewall is programmed to allow certain public IP addresses to connect to the phone system through the Internet. Cloud hosted SIP trunks provide clear conversations and use a minimal amount of bandwidth. For more information on cloud hosted SIP trunks, visit our webpage.