Yealink W73P (W70B Base and W73H Handset)

Cordless (DECT)
Up to 10 handsets and up to 20 concurrent calls per base
Power over Ethernet (PoE)
Desktop or wall mountable
Up to 2 simultaneous calls per handset
Up to 35 hours talk time (up to 400 hours on standby)
Handset range: 50 metres indoor, 300 metres outdoor
1.8″ colour display with intuitive user interface
3-way conference
3.5mm headset port