IP-PBX (Private Branch Exchange) appliances by number of users: 30 - 500 users Swift Compact IP-PBX: Swift CXW1000 Swift FXO CXW1100 Swift Ultra CXW1200 100-500 users Swan 1U IP-PBX : Swan CXW2000 200 - 2500 users Enterprise VoIP Systems: Blue Steel CXT3000...
![IP-PBX Phone Systems – IP PBX Appliances, Business Phone Systems](https://www.xorcom.com/wp-content/uploads/2016/04/completepbx.png)