- All‑in‑one solution for audio transport on IP‑networks
- Supervised control inputs and outputs
- Supports re‑broadcasting
- EN 54‑16 compliant IP solution
- Configurable as SIP telephone interface (optional)
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.
SIP telephone interface
The PRS‑1AIP1 can be configured as a SIP telephoneinterface in combination with a PAVIRO public address system. Details of the application is documented in
the PAVIRO telephone interface application note.
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 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. A configurable audio delay can be used to artificially
delay the playback of audio for loudspeaker alignment, e.g. in tunnels.
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 with configurable supervision on open and/or short-circuits. 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.
Network Interfaces
The unit interfaces to 10 and 100 Mbit Ethernet networks and announces its IP‑address that was given by a DHCP server. It can also search the network for a free IP‑address or can be given a static IP‑address. A second Ethernet connection is available to support
network redundancy.
An RS 232 interface is build‑in to communicate additional serial data over the IP network.
Power Supplies
Two power supply connections are provided as main input and backup input with supervision of both supplies.
Controls and Indicators (front)
• Reset button, recessed
• Two status indicator LEDs for network
• Eight status LEDs for control inputs
Interconnections (rear)
• Eight control inputs on Euro‑connector
• Eight control outputs on Euro‑connector
• Fault relay output on Euro‑connector
• Two balanced audio inputs on Euro‑connector (one line input, one line / microphone input)
• Two balanced audio outputs on Euro‑connector
• Two Ethernet connections on RJ45
• RS 232 on Sub‑D
• RS 485 on Euro‑connector
• Main power supply on jack
• Backup power supply on Euro‑connector
Certifications and approvals
Electromagnetic compatibility: EN55011:2009 (Limit Class: B)
EN50130-4:1995 + A1:1998 + A2:2003
Electrical safety: IEC60065 (CB‑scheme)
Approvals: CE marking EN54‑16 (0560 - CPD - 10219002/AA/04)
Technical specifications
Electrical
External power supply 1: 18 to 56 VDC
External power supply 2: 18 to 56 VDC
Power consumption: 8 W max
Microphone input (Audio input 1)
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 (Audio input 1 and 2)
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 (Audio output 1 and 2)
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
MPEG 1‑layer 2: 16, 22.05 and 24 kHz sample rate
G.711; uLaw, aLaw at 8 or 24 kHz sample rate
PCM; 16‑bit at 8 or 24 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
Ethernet 1 and 2
Connector: Dual RJ45, DTE-pinout
Standard: 802.3i / 802.3u
Speed: 10 / 100 Mbps, auto-negotiation
Flow: Full / half-duplex, autonegotiation
Protocol: TCP/IP, UDP, RTP, SIP, IGMP, DHCP, SNMP
RS 232 / RS 485
Connector RS 232: 9‑pin Sub‑D male, DTE‑pinout
Connector RS 485: Removable screw terminals
Pinout: 300 to 115.200 Baud
Setting (default) 9600, 8, N, 1
Mechanical
Dimensions (H x W x D): 216 x 38 x 125 mm( 8.5 x 1.5 x 4.92 in) (half 19” wide)
Weight: 0.7 kg (1.5 lb)
Mounting: Stand‑alone or in 19”‑rack with additional frame
Color: Silver with Charcoal
BOSCH
Bosch Praesideo - PRS-1AIP1 Audio-over-IP interface
- All‑in‑one solution for audio transport on IP‑networks
- Supervised control inputs and outputs
- Supports re‑broadcasting
- EN 54‑16 compliant IP solution
- Configurable as SIP telephone interface (optional)
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.
SIP telephone interface
The PRS‑1AIP1 can be configured as a SIP telephoneinterface in combination with a PAVIRO public address system. Details of the application is documented in
the PAVIRO telephone interface application note.
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 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. A configurable audio delay can be used to artificially
delay the playback of audio for loudspeaker alignment, e.g. in tunnels.
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 with configurable supervision on open and/or short-circuits. 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.
Network Interfaces
The unit interfaces to 10 and 100 Mbit Ethernet networks and announces its IP‑address that was given by a DHCP server. It can also search the network for a free IP‑address or can be given a static IP‑address. A second Ethernet connection is available to support
network redundancy.
An RS 232 interface is build‑in to communicate additional serial data over the IP network.
Power Supplies
Two power supply connections are provided as main input and backup input with supervision of both supplies.
Controls and Indicators (front)
• Reset button, recessed
• Two status indicator LEDs for network
• Eight status LEDs for control inputs
Interconnections (rear)
• Eight control inputs on Euro‑connector
• Eight control outputs on Euro‑connector
• Fault relay output on Euro‑connector
• Two balanced audio inputs on Euro‑connector (one line input, one line / microphone input)
• Two balanced audio outputs on Euro‑connector
• Two Ethernet connections on RJ45
• RS 232 on Sub‑D
• RS 485 on Euro‑connector
• Main power supply on jack
• Backup power supply on Euro‑connector
Certifications and approvals
Electromagnetic compatibility: EN55011:2009 (Limit Class: B)
EN50130-4:1995 + A1:1998 + A2:2003
Electrical safety: IEC60065 (CB‑scheme)
Approvals: CE marking EN54‑16 (0560 - CPD - 10219002/AA/04)
Technical specifications
Electrical
External power supply 1: 18 to 56 VDC
External power supply 2: 18 to 56 VDC
Power consumption: 8 W max
Microphone input (Audio input 1)
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 (Audio input 1 and 2)
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 (Audio output 1 and 2)
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
MPEG 1‑layer 2: 16, 22.05 and 24 kHz sample rate
G.711; uLaw, aLaw at 8 or 24 kHz sample rate
PCM; 16‑bit at 8 or 24 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
Ethernet 1 and 2
Connector: Dual RJ45, DTE-pinout
Standard: 802.3i / 802.3u
Speed: 10 / 100 Mbps, auto-negotiation
Flow: Full / half-duplex, autonegotiation
Protocol: TCP/IP, UDP, RTP, SIP, IGMP, DHCP, SNMP
RS 232 / RS 485
Connector RS 232: 9‑pin Sub‑D male, DTE‑pinout
Connector RS 485: Removable screw terminals
Pinout: 300 to 115.200 Baud
Setting (default) 9600, 8, N, 1
Mechanical
Dimensions (H x W x D): 216 x 38 x 125 mm( 8.5 x 1.5 x 4.92 in) (half 19” wide)
Weight: 0.7 kg (1.5 lb)
Mounting: Stand‑alone or in 19”‑rack with additional frame
Color: Silver with Charcoal
