Panasonic KX-TDA5470 ***REFURBISHED*** 4-Channel VoIP Extension Card IP-EXT4Good Condition4 Port IP Extension Card (IP-EXT4)Connects KX-TDA50G to WAN/LAN for connection of up to 4 IP extensions, KX-NT136, KX-NT265 and the IP softphoneRequires 1 8-port slotCapacity: 1 per systemUse with TDA50G s..