With 3CX Phone System you get a flexible and scalable PBX which allows you to choose the OS you want to run your phone system on, the cloud you want to host it on, as well as the IP Phones & other hardware you may want to use with it. In addition, 3CX Phone System is 100% scalable and can grow with your business. Sold at the most competitive price in the market you really do get the most for your money.  
 
CallnClear SIP Trunks have passed the 3CX interop test, therefore, you simply Plug’N’Play the SIP Trunk with 3CX Phone System for zero configuration and easy ongoing management.