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PREFACE
The Network Interface Unit WJ-NT204 is the key devices
for a remote surveillance system. The unit works as an
HTTP server and transmits high quality video on the H.261
or JPEG* standard basis, along with audio**. You can mon-
itor remote places through a 10/100BASE-T Ethernet LAN.
Various systems can be built up ranging from a 1-1 site
system up to multiple site system.
A Remote site can install a maximum of 4 cameras with the
unit alone, or up to a number of cameras in combination
with peripheral devices such as Data Multiplex Units, etc.
The unit has serial and parallel interfaces to communicate
with those peripherals.
A Control site can be formed with a WJ-NT204 or a general
purpose PC. It receives video and audio to check them on
a video monitor or computer display while sending control
FEATURES
Audio/Video Transmission
• Up to 4 cameras can be connected when no peripher-
als installed at the Remote site.
• A Remote site supplies camera picture and audio** to
the Control site.
• Picture selection is made accordingly when the con-
nected sensor operates or the Control site demands
the camera.
• Picture quality can be selected in accordance with net-
work traffic and your requirement.
• Audio mute available (
Access to the Site
• TCP/IP is employed to permit use of existing Ethernet
LANs.
• Sensor (Alarm) activation triggers the Auto-dial function
to access to the Control site.
• One-touch dial and Quick dial are available with preset
addresses.
Copyrights
• MS-DOS is a registered trademark of Microsoft Corporation in the U.S.A. and other countries.
• Windows and Windows NT are trademarks of Microsoft Corporation in the U.S.A. and other countries.
• Netscape Navigator is a trademark of Netscape Communications Corporation.
• Adobe Acrobat Reader is a trademark of Adobe Systems Incorporated.
• Other company names and product names appearing in the manual are registered trademarks or trademarks of the companies con-
cerned.
5
.)
when H.261 mode is applied
WJ-NT204
commands to the Remote site devices for pan/tilt control,
camera selection and so forth.
Setup menus are pre-installed in the unit that make you
customize the settings most suitable to the system require-
ment. That is, for example, IP directory registration, dialing
sequences, camera switching sequences, etc. A Control
site PC can download the main page from the WJ-NT204.
Remote Controller WV-CU20 is an exclusive unit to operate
with the WJ-NT204 for dialing, camera selection, etc., in the
normal mode. It is also used for IP address registration,
sequential mode setup, alarm mode setup, etc., in the
setup mode.
*JPEG is applicable only when the Control site uses a browser on the PC.
**Audio transmission is available only when H.261 mode is applied.
Peripheral Interfaces
• Combination cameras
• PS
Data or other NORMAL devices such as PC
•
• Data communication/ RS-485 (PS
• 8 sensor inputs and 8 trigger outputs
• 8 parallel inputs and 8 parallel outputs
Setup menus
• View point setup
• Memories: Dialing number table/Alarm log/Communi-
cation log
• Maintenance
• Up/Download function enables the Control site to edit
the Remote site's setup remotely.
• The built-in ringer beeps when receiving a call.
• Password protects your system from unauthorized
operation.
Homepage
Data)/RS-232C
•
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