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Bosch PB-PRS1AIP1 IP Audio Interface


Our Price : $1,900.00

Product Code: PB-PRS1AIP1


The PRS-1AIP1 is a universal, IP-based audio device supporting VoIP and Audio over IP applications. It is an ideal solution for bridging audio and contact closures over long distance LAN and WAN networks, e.g. in shopping malls, tunnels, in and between railway stations. It extends and interfaces to Praesideo and non-network based traditional public address systems without the need for a PC during operation.

The unit has analog audio inputs and outputs for easy interfacing with optional pilot-tone supervision for emergency sound purposes. One audio input can be switched to microphone sensitivity with built-in microphone supervision. Also, the control inputs offer cable and connection supervision.

Control inputs and outputs can be used to set up an audio connection to start a remote call, but also to pass remote fault events to the system controller.

Multiple audio formats are supported: single channel, full duplex 16-bit PCM or G.711 for very low latency, and twochannel send or receive MP3 for high quality audio with various sample rates and compression settings. The unit provides two balanced line inputs and two balanced line outputs. One of the inputs can be configured as balanced microphone input with a phantom power supply for electret / condenser microphones and microphone connection supervision. The output level is configurable.

Audio connection supervision using a 20 kHz pilot tone is supported, with detection on the audio input of the transmitter and regeneration on the audio output of the receiver.

Audio signals can be routed in uni-cast to up to 16 receivers, preconfigured or on activation of control inputs. Receivers are able to re-broadcast the incoming audio stream to other receivers. In case the interfaces are on the same LAN also broadcast is supported.


External power supply 1: 18 to 56 VDC
External power supply 2: 18 to 56 VDC
Power consumption: 8 W max

Microphone input:
Sensitivity: -48.5 to -26 dBV
Impedance: 1360 ohm
Frequency response: 100 Hz to 15 kHz
S/N: >60 dB
Supervision detection:
Electret: 0.4 - 5 mA
Dynamic: 120 - 1300 ohm

Line Inputs:
Sensitivity: -16.5 to +6 dBV
Impedance: 22 kohm
Frequency response: 20 Hz to 15 kHz
S/N: >70 dB
Pilot tone detection level (input 2 only): -30 dBV

Line outputs
Level: 6 dBV max
Pilot tone level (output 2 only): -20 dBV (20 kHz)

Audio formats:
MPEG 1-layer 3: (MP3) 32, 44.1 and 48 kHz sample rate, Encoding up to 192 kbps VBR, Decoding up to 320 kbps (stereo)
MPEG 1-layer 2: 16, 22.05 and 24 kHz sample rate
G.711: uLaw, aLaw at 8, 24 or 32 kHz sample rate
PCM: 16-bit at 8, 24 or 32 kHz sample rate

Control inputs: 8 x
Connectors: Removable screw terminals
Operation: Closing contact (with supervision)
Control / fault outputs: 8 x / 1 x
Connectors: Removable screw terminals
Operation: Make contact (SPST, voltage free)
Rating: 24 V, 0.5 A

Connector: Dual RJ45, DTE-pinout
  • All-in-one solution for audio transport on IP-networks
  • Supervised control inputs and outputs
  • Supports re-broadcasting
  • Configurable audio delay on the output for loudspeaker alignment
  • Easy to install and configure via standard web-browser
  • EN 60849 compliant IP solution

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