2N Analog Vario Installation Manual page 27

Description of Jumpers
Connector (8)
1. Here connect the current call indicator (LED).
2. Write-protection (if the jumper is mounted).
3. do not connect
4. Microphone sensitivity reduction (mount the jumper for noisy environments).
Camera setting – connector (18): refer to the instructions enclosed to the camera unit.
Parallel Connection
Parallel connection of multiple telephone sets was commonly used in the era in which
telephone lines were rare, It carries unnecessary risks to connect the unit in this way. It is in no
case recommended to connect 2N
®
another 2N Analog Vario door communicator. It is neither admissible to use equipment that
switches one line between two or more sets (intelligent double branch, etc.).
Installation manual 2N® Analog Vario
®
Analog Vario in parallel to another telephone or
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