Instant Mobility, no more lost calls and crystal clear voice on a device that looks, feels, and operates like a mobile phone. SWSIP-1000 is next generation intelligent communication device, adds Voice-over-IP (VoIP) communications with wireless installations, allowing simultaneous voice and data support on the same wireless backbone. It is primarily designed as an IP-PBX feature telephone with graphic LCD display for business or Home user applications, and provides straightforward user customization based on changing needs. Wireless SIP IP Phone SWSIP-1000 is an advanced wireless (IEEE 802.11b) IP phone that allows users to achieve perfect voice communication over an IEEE 802.11b wireless IP network. Not only does the WirelessIP SWSIP-1000 support all of the conveniences and functions of a digital phone, it also perfectly integrates all of the merits and features of analog and IP phones over the data communication system. Its compact and light body fits into your pocket, so you can use it anytime and anywhere. SWSIP-1000 WLAN Mobile IP Phone is also good for ITSP, Multi-Branch offices or SOHO&Hot Spot applications combined with wireless broadband accessing. Performance Characteristics: Call Control Protocol : SIP (RFC2543/RFC3261) Codec : G.711/G.729a Battery : 3.6V, 1350mAhr Lithium Battery Life : 3.2 hr talk time, 21~23 hr standby Wireless Access Protocol : CSMA/CA Frequency Range : 2.4-2.497 GHz Number of Channels : Up to 14 Channel Data Rate : 802.11b Direct Sequence Rate scaling at 1,2,5.5, and 11 Mbps Release Output Power : 60mW peak Range : 1,000+ft./300+m outdoors and up to 295 ft./75.5m indoors