Nettalk Duo VOIP Telephone Service (Certified Refurbished) This Certified Refurbished product is manufacturer refurbished, shows limited or no wear, and includes all original accessories plus a 90-day warranty Plug and play; 1 x RJ-11 port, 1 x Ethernet port; Mini USB; 3' USB to Mini A connector; 3' Ethernet cable Free calling to the US & Canada or DUO to DUO; No computer needed / No contracts / No monthly bills; Ultra-low cost international calling rates Visual voicemail, call waiting, conference calling, conference bridge, and fax friendly First year of service is included. $29.95 each additional year; Live US-based technical support and personalized customer service