The systems listed use regular (home style wiring called Looped or Daisy Chained) Offices which had PBX systems can not use these phones without wiring adjustments
Line vs. Cloud
Voip or Cloud
– These systems run over your home or office internet, and require good internet to function. Most have to be Hard wired (plugged into a router/switch).
Line Phone Systems
These system run on lines provided by a carrier. The phones plug in to an RJ 11 jack
Business Phone Systems are Different and you should call us to discuss.