DESC: Do you want the convenience and flexibility of both a landline and peer-to-peer internet calling in one easy to use cordless phone? With the Panasonic Globarange BB-GT1500 cordless phone system you get both a regular landline phone and an peer-to-peer Internet phone line-utilizing joip telephony service-that lets you make free domestic and international calls between Globarange phones around the world for three years with joip service.That's a total of two lines: one landline and one peer-to-peer Internet phone line.