VTech VDP650. Brand New Includes 3 Year Warranty.. The VTech VDP650 is a ErisTerminal™ SIP Feature Base station that supports up to 10 Handsets and Desksets in the VTech phones family. The cordless family of phones features four programmable LED backlit line keys on the handsets and desksets. The VDP650 handles up to 8 SIP lines / accounts and manages multiple calls with advanced call handling features... The VDP650 is a DECT 6.0 base station is compatible with VTech models VDP651, VDP658, VSP605. The base station features a single ethernet port, power over ethernet, 3-way conferencing and multi line support.