Any handset can call any other on intercom.
Calls can be transferred from one handset to another. Put your EnGenius handset in your pocket or on your belt, and work or walk while you talk, hands-free. It comes with a 65' low-loss coaxial cable to connect to your EnGenius phone base. You get a base that plugs into an electrical outlet and a phone jack, plus a portable handset , and a charger stand for the handset. The charger stand can go almost anywhere, because it needs just electrical power, but no phone jack.