Bosch PRS 1AIP1 IP Audio Interface

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 and between conference centers and/or in remote interpretation applications. It extends and interfaces to DCN systems and non-network based traditional conference and public address systems without the need for a PC during operation.
The unit has analog audio inputs and outputs for easy interfacing. 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 pass channel engaged events to the DCN system.

Functions

Audio
Multiple audio formats are supported: single channel, full duplex 16-bit PCM or G.711 for very low latency, and two-channel 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. The output level is configurable. A configurable audio delay can be used to artificially delay the playback of audio for loudspeaker alignment.

Audio Routing
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.
In PCM and G.711 (uLaw and aLaw) full duplex audio interfacing between two units is possible.

Control inputs and outputs
The unit has eight control inputs. Eight control outputs have dry relay contacts. Control inputs can be routed to control outputs for remote actions or to pass on fault information between audio transmitter and receiver, in both directions. Control inputs can also be configured to change the audio routing.
An additional dry relay contact is provided for fault indication of the unit, including a high temperature fault situation.