Cisco IP Phone 8841 - VoIP phone - SIP, RTCP, RTP, SRTP, SDP - 5 lines
The Cisco IP Phone 8841 delivers mission-critical voice communications that are highly secure and easy to use. It offers wideband audio and a large, widescreen, high-resolution color display for menus and content. The 8841 is ideal for knowledge workers, administrative staff, and managers in mid-sized to large businesses. As a low-power device, it is both cost-effective and earth-friendly.
Cisco IP Phone 8841 - VoIP phone
Cisco Business Edition 6000
Multiple VoIP protocol support, integrated Ethernet switch