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.
Citel Technologies , A Voice over IP Phone company that provides VoIP Business Phone Systems. Its Main products include EXTender, PBXgateway, Upgraded Hardware Products, PBX platforms etc.