Overview
With an amplified output suitable to drive 5W into an overhead paging or panel speaker, a sensitive microphone input, selector/contact closure inputs and control output the device is equally suitable for paging, intercom, help point and monitoring applications.
A built-in switch provides two 10/100Mbps network interfaces allowing the daisy chaining of devices.
The supported codecs (PCM/uLaw/aLaw/MP3) and range of sample rates (8..48kHz) allow the optimization of the audio quality for the several applications, even in higher quality.
The Annuncicom 155, the device can operate as a streaming receiver for background music with priority messaging, as a paging or inter- com device within a Paging/Intercom system or as a digital message repeater. With the Barix SIP firmware, the device can operate as part of an IP telephony solution, for example, as an intercom panel in parking barriers, toll gates, as a SOS help point, call box etc.
Being fully EN50155 and GL “Brücke” com- pliant, the device fulfills the stringent requirements to be used in trains, cars, ships and industrial as well as outdoor installations, it is designed for harsh environments (IP65).
Applications
• Generic VoIP Intercom and Paging Device with speaker amplifier
• Voice Evacuation Systems
• Microphone Encoder for IP Audio
• Surveillance
• Help Point/SOS call box device
• Live IP Audio Encoder for Streaming Applications
• SIP and IP Paging Zone device
• LIP65 rating, tested to EN50155, suitable for applications in rolling stock
Features
• MP3, G.711, PCM Encoding and Decoding
• Audio Level Supervision with SNMP Trap generation
• IP Streaming via TCP, UDP, RTP, Multicast
• Microphone Input
• Line Level Output
• Amplified Output 5W (8Ohm)
• Contact Closure Input (2)
• Current sourcing LED Output (1)
• RS-485 Serial Port (1)
• Dual Ethernet
• Supervised Speaker/Mic and Control Interface
• IP65 rated, EN50155: Railway applications - Electronic equipment used on rolling stock
• Temperature range (-40..+70‘C)
• Supply Voltage (24 to 48 VDC ± 30%, <60 V)
* depends on used codec, best results @48kHz PCM
Specifications
ELECTRICAL
- 24 to 48 VDC ± 30%, <60 V, 14 Watt max.
- M12 "A" connector (male)
ETHERNET
- 2x 10/100Mbps auto, MDI/MDI-X, Link & Activity LEDs
- per interface, Internal switch, Protocols: TCP/IP, UDP, RTP, SIP, DHCP
- M12 "D" connector (female)
RS-485
- 300..230'400 Baud asynchronous, 7/8 bit
- +12V, 100mA, fused supply output to external devices
- M12 "A" connector (female)
LINE OUT
- max. 11 dBm @ 600 Ohm, max. 12 dBu (FS), unloaded
- Output impedance 40..45 Ohm, 14 mWatt max
- Values @ 600 Ohm: Freq. response 20 Hz .. 20 kHz(-3DB)
- Dynamic range 80dB, SNR -80dB, THD <0.15% (-3dBFS)*
- Output level software controllable
SPEAKER OUT
- 5.0 Watt RMS max @ 8 Ohm
- Values @ 8 Ohm: Freq. response 10 Hz .. 15 kHz (-3dB),
- Dynamic range 82dB, SNR -82dB, THD <0.1% (-3dBFS)*
- Output level software controllable
MICROPHONE IN
- Electret mic, supervised bias power (2.4..4 VDC)
- Frequency response 50Hz ..20kHz (-3dB)*
- Dynamic range 70dB, SNR -70dB, THD <0.05% (-3dBFS)*
- input sensitivity software controllable
AUDIO FORMATS
- MP3, encoding/decoding up to 192/320kbps
- PCM 16bit @8, 16, 22.05, 24, 32, 44.1, 48 kHz
- G.711, uLaw, aLaw (sample rates same as PCM)
DISCRETE I/O
- 2 fully supervised inputs
- 1 LED driver output, current limited
- internal temperature sensor
- 2 status LEDs (red/green)
PANEL INTERFACE
- Sub-D 15 connector, all audio and I/O signals
MECHANICAL
- Aluminum case, 460 g, with mounting wings
MIN. MOUNTING SPACE INCL. PLUGS (W X D X H)
- 230 x 138 x 47 mm (9 x 5.43 x 1.85 inch)
DIMENSIONS (W X D X H)
- 130 x 108 x 38 mm (5.12 x 4.25 x 1.5 inch)
MTBF
- Calculated acc. MIL217F at 40°C
- Min. 80 000h at "ground mobile" environment
- Min. 225 000h at "ground fix" environment
- Calculated acc. IEC62380 Standard
- Min. 110 000h at “ground; non stationary; severe”
* depends on used codec, best results @48kHz PCM