A "landline" is a traditional telephone connection that uses physical wires or cables to transmit calls. It is a fixed telephone system that is typically connected to the wall in a home or office. Full definition
You need to plug one end of the included telephone cable into the back of the Echo Connect, and then plug the other end of the cable into a standard telephone jack (for landline phone service), or a Wi - Fi router (for digital phone service), or a analogue telephone adapter (for VoIP phone service) (pocket-lint.com)
There are too many reasons to count, but consider, just for openers, that the people who are running many of the polls are still using antiquated lists of landline telephones for their survey calls. (inc.com)
While both offer free telephone calls over the Internet, Gizmo had the price advantage for landline phones, at 1 cent per minute for U.S. calls. (lawsitesblog.com)