Bosch DCN Next Generation Installation & User's Instructions page 55

DCN Next Generation | Installation and User Instructions | Central Devices
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figure 8. 1 4: Insertion
Note
In the Insertion mode, you must install a device
between audio output 2 and audio input 2 of
the central control unit. When you do not
install a device, the audio signals from
contribution devices (floor) leave the system,
but do not enter the system again.
8.8.2.5 Mix-minus
Use the Mix-minus mode to:
• connect to a telephone coupler.
• connect two systems together.
Note
The Mix-minus connection does not cause
acoustic feedback.
Bosch Security Systems | 2007-02 | 9922 141 70525
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When you connect to a telephone coupler:
• Go to menu item 7G Routing I/O 2 to set the systems
to the Mix minus mode.
• Connect audio input 2 and audio output 2 to the
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telephone coupler.
When you connect two systems together (refer to figure
8.15)
• Go to menu item 7G Routing I/O 2 to set the systems
2 in the Mix minus mode.
• Connect audio input 2 of the first system to audio
output 2 of the second system.
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• Connect audio output 2 of the first system to audio
input 2 of the second system.
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figure 8. 1 5: Mix-minus
Note
When the distance between the two systems is
great, you can use a telephone coupler to
connect the two systems.
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