Companies can also more easily migrate their existing PBX systems to Cisco IP hardware, or add IP phones to legacy systems, said De Beer, because CallManager now supports a full set of the Q.SIG protocol as well as support for Session Initiation Protocol (SIP). Q.SIG is the global signaling standard for PBX systems, while SIP is an IP telephony signaling protocol used by a wide range of hardware and software, including Cisco's MeetingPlace conferencing server.
CallManager 4.0, available now, is priced starting at $5,995, while Cisco VT Advantage 1.0 -- the Windows 2000 and Windows XP component necessary to add video conferencing to IP phone calls -- will ship in April at a price of $190 per user, and includes a USB-based camera.
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