Toa VS-900 - Manual (Page 8)

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4. GENERAL DESCRIPTION
The VS-900 Security System is a voice communication system that permits calls to be quickly and easily
made - even in emergency situations - with the touch of single button. The system can record conversations,
and features external equipment sync output and operation log output. These features combine to make the
VS-900 an ideal system for voice security applications.
5. FEATURES
• Modular construction facilitates installation, maintenance, and system expansion.
• Rack- or wall-mountable exchange.
• Up to 4 master stations (or commercial telephone sets) and 64 substations can be connected per exchange.
• Up to 2 outside telephone (C/O) lines can be connected per exchange.
• Station paging (by means of the substation speaker) and external paging functions.
• External sound source distribution capability.
• Up to 19 paging zones can be established.
• Emergency Paging function.
• By connecting an external recording device, the conversations at the master station (or telephone set) and
at the outside line telephone can be recorded.
• Exchange operating log can be transmitted to a PC.
• Tie-line possible for up to 16 exchanges.
• 24 V DC input for connection of backup power supply.
• Manual/Automatic Call Forwarding, Conference, Scan Monitor functions.
6. INSTALLATION PRECAUTIONS
• Make sure that the power is switched OFF during installation work. Switch on the power after the installation
work is completed.
• To prevent the unit's failure, be sure to switch off its power when inserting or removing the card.
• When mounting each card, fully insert it into the Main Frame. After all cards are mounted, secure them with
the card fixing bracket.
• Do not use the unit near heaters or in locations exposed to sunlight. The unit's plastic parts may be
deformed or its finish discolored.
• Avoid installing the unit in humid or dusty locations, as doing otherwise may cause the unit's failure.
• When the unit gets dirty with dust or oil, wipe down with a soft, dry cloth. Never use a chemically-treated
cleaning cloth or volatile liquids, such as benzine and thinner, because the unit's plastic parts may be
deformed or its finish discolored.