RADVision L2W-323, User Manual

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The OnLAN 323 Product Series
The RADVision OnLAN 323 product series provides connectivity for multimedia
applications between IP-based networks such as LANs, Intranets and the Internet and
circuit-switched networks such as ISDN and PSTN. The OnLAN 323 product series consists
of the L2W-323 Gateway (
BRI and V.35 ), L2W-323P Gateway (PRI), the MCU-323
Multipoint Conference Unit , the VIU-323 Video Interface Unit and the NGK-100
Gatekeeper. These “building blocks” allow users to communicate over different networks,
products and protocols.
The L2W-323 Gateway and the L2W-323P Gateway translate between the H.323 and the
H.320 protocols allowing the exchange of voice, video and data between H.323-based
conferencing endpoints on IP networks and H.320-compliant endpoints on circuit-switched
ISDN networks as well as Voice over IP (
VoIP ). Connecting to an ISDN PRI, ISDN BRI or
V.35 interface, these Gateways provides connections at rates of 768 Kbps, 384 Kbps, 256
Kbps, 128 Kbps, 2 x 64 Kbps or 64 Kbps. In conjunction with the internal Gatekeeper, the
L2W-323 and L2W-323P Gateways operate as multimedia PBXs allowing internetwork
calls, direct inward dialing and call transfer.
The MCU-323 Multipoint Conference Unit allows users to spontaneously initiate voice-
only or full multimedia multipoint conferences at rates ranging from 64 Kbps to 1.5 Mbps.
The MCU-323 also provides audio mixing (G.711 A/
µ
Law), video switching (H.261
CIF/QCIF, voice activated) and simple monitoring of conferences using a Web browser.
The VIU-323 Video Interface Unit is a self-contained terminal adapter that connects H.320
Room Systems to IP networks without disrupting the current H.320 capabilities of the
Room System. The VIU-323 translates between the H.323 and H.320 video and audio
streams and respective communication protocols.
The H.323 Gatekeeper is an internal component of the L2W-323 Gateway, the L2W-323P
Gateway and the MCU-323 Multipoint Conference Unit. It manages the H.323 network by
enabling address resolution, full call control and supplementary call services such as call
forward and transfer. The H.323 Gatekeeper can be disabled in the L2W-323 Gateway and
in the MCU-323 Multipoint Conference Unit, allowing you to use an external gatekeeper.
NGK-100 Gatekeeper is an external gatekeeper that runs on Windows NT and is designed
for production IP telephony and multimedia networks. With the NGK-100 network
managers can define, control, optimize and manage multimedia conferencing or Voice over
IP calls. The NGK-100 Gatekeeper is H.323 Version 2 compliant.