Business phones for offices that run calls over the network: desk IP phones from Fanvil, Grandstream and D-Link, Hikvision SIP phones, the Siemens Gigaset A580 IP, Fanvil Wi-Fi and DECT cordless options with the W710D base station, and the Yeastar S20 stand-alone IP PBX that ties extensions together.

Tip: start with the PBX, then choose phones by role, such as a basic Fanvil V50P for general desks and a V66 Pro for reception.