9 Audio Output 1 Balanced, line level.
– 1: -
– 2: ground
– 3: +
10 Audio Input 2 Balanced, line level with pilot tone
detection.
– 1: -
– 2: ground
– 3: +
11 Audio Input 1 Balanced, microphone/line level,
microphone supervision.
– 1: -
– 2: ground
– 3: +
12 RS 232 serial port D-Sub, 9-pole male.
13 Ethernet 1 RJ45 for network connection 10/100
Mbps with status indicators.
– Green ON: network connection
established
– Green OFF: no network connection
– Yellow ON/flashing: data
communication
– Yellow OFF: no data communication
14 Ethernet 2 (back-up connection for
redundancy)
RJ45 for network connection 10/100
Mbps with indicators as for Ethernet 1.
15 RS 485 bus – 1: A (TxD-/RxD-)
– 2: C (reference). Connected via a
100 ohm resistor to the ground,
which is connected to the negative
input terminal of the power supply
– 3: B (TxD+/RxD+)
16 Back-up power supply input With battery under-voltage detection.
– 1: +
– 2, 3: ground
17 Mains power supply input With mains power failure detection.
– Centre: +
– Ring: ground
IP Audio Interface System overview | en 11
Bosch Security Systems B.V. Operating Manual 2013.03 | V2.0 |
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