Get Nextiva compatible phones at IP Phone Warehouse. Nextiva puts your business VoIP communications in the cloud. Nextiva has a Bring Your Own Device policy (BYOD), so you can get competitive pricing on Nextiva supported IP phones. Nextiva supports VoIP phones from many manufacturers — including Cisco, Poly (Polycom), VTech and Panasonic. IP Phone Warehouse offers the best pricing on Nextiva compatible phones.