Yealink SIP-W52P is a wireless VoIP DECT system, consisting of a base station and the handset. The system can be expanded up to five additional handsets (Yealink SIP-W52H), each of which can have its own SIP account. Like other VoIP DECT systems, Yealink W52P will work from a distance of 50 meters from the base in the closed space and up to 300 meters in open space.
Lingo is one of the most affordable U.S. Internet phone services. Lingo offers unlimited local and long distance calls anywhere in the U.S., to Canada, and to Western Europe, plus over 25 calling features