The service allows you having a number which not necessarily conforms to your physical location. The service allows having the number of any USA state and you can make and receive calls. The 911 service will also be available from this number.
Citel PBXgateways are installed at the central PBX location, and EXTenders are deployed at branch offices, call centers, or at home offices over managed IP connections, DSL, cable, or analog circuits