Equitel E411 Manuel utilisateur

Audio over IP devices

EQUITEL Network Audio

Audio over IP decoders / mixers

E411, E413, E415 & E417

Technical Manual

Ed 2.1

This document is the technical reference for the decoders of the ENA Audio over IP family of devices. Includes the

E411, E413, E415 and E417 equipment.

It is valid for versions:

Hardware: EAIP1V133

Firmware: 3.06

Zaragoza, June 2015.

Ed 2.1

June 2015 - Ed.2.1

Audio over IP decoders E411, E413, E415 & E417 technical manual ii

Audio over IP decoders / mixers

Technical manual

Index

Chapter 1 : Introduction .....................................................................................................................................1

Chapter 2 : Functionality ....................................................................................................................................3

2.1 Audio source types ................................................................................................................................3

2.2 Audio layers...........................................................................................................................................5

2.3 Audio switching .....................................................................................................................................6

2.4 Digital I/Os.............................................................................................................................................6

Chapter 3 : Hardware description ......................................................................................................................7

3.1 External elements location....................................................................................................................7

3.2 Power supply .........................................................................................................................................8

3.3 Indicators...............................................................................................................................................8

3.4 IP address indication and default configuration recovery.....................................................................9

3.5 Ethernet.................................................................................................................................................9

3.6 Digital I/O ..............................................................................................................................................9

3.6.1. Inputs ..............................................................................................................................................9

3.6.2. Outputs .........................................................................................................................................10

3.7 Audio Outputs .....................................................................................................................................10

3.7.1. Headphone Output.......................................................................................................................10

3.7.2. Line Out ........................................................................................................................................10

3.7.3. Amplified audio output.................................................................................................................11

3.8 Audio inputs ........................................................................................................................................12

3.8.1. Mic input.......................................................................................................................................12

3.8.2. Line input ......................................................................................................................................12

3.9 USB connector .....................................................................................................................................12

3.10 Wall-mount remote control connector ...............................................................................................13

Chapter 4 : Configuration and control of the device ........................................................................................14

4.1 Accessing the device............................................................................................................................14

4.2 Configuration.......................................................................................................................................16

4.2.1. General Information .....................................................................................................................17

4.2.2. Audio.............................................................................................................................................17

Audio output ..............................................................................................................................17

Input Amplification ....................................................................................................................17

4.2.3. Audio Channels .............................................................................................................................18

‘RTP’ Source type configuration.................................................................................................21

‘SIP PBX’ Source type configuration...........................................................................................22

‘P2P SIP’ Source type configuration...........................................................................................23

‘SHOUTcast / ICEcast’ source type configuration ......................................................................24

‘Scheduled playlist’ Source type configuration..........................................................................27

‘Continuous playlist’ Source type configuration ........................................................................28

‘Microphone’ Source type configuration ...................................................................................29

‘Line’ Source type configuration ................................................................................................31

4.2.4. Network ........................................................................................................................................33

Static mode ................................................................................................................................33

Dynamic mode ...........................................................................................................................34

4.2.5. Firmware updates and device reset .............................................................................................35

June 2015 - Ed.2.1

Audio over IP decoders E411, E413, E415 & E417 technical manual iii

Reboot device ............................................................................................................................35

Restore default values ...............................................................................................................35

Firmware upgrade......................................................................................................................35

4.3 Control.................................................................................................................................................36

Chapter 5 : TMH60ENA wall-mount controller ................................................................................................37

5.1 Description ..........................................................................................................................................37

5.2 Connection ..........................................................................................................................................38

5.3 Operation ............................................................................................................................................38

5.3.1. Initial screen .................................................................................................................................38

5.3.2. No BGM sources screen................................................................................................................38

5.3.3. Default /control screen.................................................................................................................39

5.3.4. BGM channel selection .................................................................................................................39

5.3.5. ADV or EMG channel information ................................................................................................39

5.3.6. System info and configuration......................................................................................................40

BackLight level change ...............................................................................................................40

5.3.7. Link error screen ...........................................................................................................................40

Chapter 6 : Software.........................................................................................................................................41

Chapter 7 : Technical data................................................................................................................................42

7.1 Dimensions ..........................................................................................................................................42

7.2 Electrical Specifications .......................................................................................................................43

7.2.1. Power............................................................................................................................................43

7.2.2. Ethernet ........................................................................................................................................43

7.2.3. Audio.............................................................................................................................................44

7.2.4. Contacts ........................................................................................................................................44

7.3 Environmental conditions ...................................................................................................................44

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Audio over IP decoders E411, E413, E415 & E417 technical manual Page 1

Chapter 1: Introduction

The EQUITEL audio over IP devices family allows the transmission and reception of music channels and audio

messages over IP, using standard IP network hardware.

These devices provide a unified solution for transmitting audio signals such as background music, advertising and

informational messages, to one or more destinations.

By supporting multiple protocols and encoders, these devices are indicated in broadcasting applications, VoIP

and Internet radio. In addition to leveraging existing infrastructure and devices such as SIP phones.

Encoder (E421) sends audio input through the Ethernet network. This process is known as "streaming". Streams

can also be generated by other devices, like a PC running an application or a SIP phone.

The E495 and E497 desktop microphone consoles can also send vocal messages to the decoders for paging

applications. If more than one of these devices are used, they intercommunicate to avoid message collisions.

The E430 is a music and announcements server that can generate audio from internally stored files. It can be

used to generate background music channels and/or advertisements.

Decoders (E411, E413 or E415) can receive selected channels (i.e. "streams") from the network and convert it

back to an analog audio signal.

Mixer (E417), besides the same features than the decoders, includes the option to use audio coming from files

stored in a USB memory or analog signals in its MIC or LINE inputs.

The selection of the actual stream, local file or analog signal to be sent to the output is made based on a

powerful but very easy to configure priority schema.

The figure shows a schematic of this family of devices usage:

Figure 1: EQUITEL Audio over IP devices usage schema

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Audio over IP decoders E411, E413, E415 & E417 technical manual Page 2

This document is the user's manual for the decoding members of the family:

E411 - Decoder

Stereo output in line level (RCA) and headphones.

To be used with an external amplifier.

E413 - Decoder with digital I/O

Same features as E411 including two digital inputs and outputs for

external devices control.

Digital outputs can be used to switch ON/OFF the external amplifier.

E415 - Amplified decoder

Same as E413 and includes a high quality 25W audio amplifier.

Amplified output can be configured in mono or stereo.

Line-out output can be used simultaneously.

E417 - Decoder / Mixer

With the same characteristics as E415, it can also play sound from

files stored in an external USB memory and from its analog inputs.

Ideal to mix external background sources with local messages.

TMH60ENA

Wall-mount control for the ENA decoders.

Allows selection of the background music channel and volume control

in an easy way.

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Audio over IP decoders E411, E413, E415 & E417 technical manual Page 3

Chapter 2: Functionality

2.1 Audio source types

Decoders can play high quality stereo sound coming from several source types:

RTP:

Audio streams coming from E321 encoders, E495 or E497 paging consoles, E430 audio server, computer

applications or other devices, in the RTP format as defined in RFC 3550.

The RTP can be received also in multicast mode. So, many decoders can play the same RTP stream

without extra bandwidth consumption.

The allowable payload formats are:

oG711-A: (vocal quality, VoIP standard)

oPCM 16 bits/sample, 1 or 2 channels, 11025 Hz (voice/music –medium quality)

oPCM 16 bits/sample, 1 channel, 22050 Hz (voice/music –good quality)

oPCM 16 bits/sample, 1 channel, 32000 Hz (voice/music –very good quality)

oMP3 (quality according to emitter)

When using these RTP formats, as audio is not compressed, the latency is fairly low1.

RTP/SIP 2:

Audio streams coming from a standard SIP phone or PBX. The audio codec used is G711-A.

The decoder has an internal SIP agent that can be registered in an SIP PBX and acts as a standard

extension accepting calls.

Also, can be configured in “peer-to-peer” (P2P) mode if not PBX is used to accept calls directly from

phones.

When a call is received, is automatically answered and the audio is sent to the output if no other higher

priority channel is being played.

SHOUTcast / ICEcast 3:

High quality audio streams coming from local or internet servers (internet radios). These streams can

also be generated with the ENA software or the E430 audio server.

The device connects to the configured URL to acquire the compressed audio stream. The audio can be

sent in any of the following formats:

oMP3 up to 192 kb/s

oAAC+ up to 192 kb/s

oOgg-Vorbis up to 192 kb/s

Due to audio compression and buffering, this format has a very high latency, that can reach several

seconds.

1The minimum latency is obtained in a well dimensioned and configured network, and can be as low as 40 milliseconds.

2SIP is the most widely used protocol nowadays for session establishing in VoIP telephony. It is defined in RFC 3261 .

3SHOUTcast and ICEcast are both standards used to transmit music through Internet. There are many public radios in Internet

using these protocols, and is quite easy to create a proprietary radio using one ICEcast server provided by an ISE (Internet

Services Provider).

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Audio over IP decoders E411, E413, E415 & E417 technical manual Page 4

Audio files (in E417 only):

The E417 can decode and play audio files stored in an USB mass storage device.

The allowable formats are:

oMP3 up to 320 kb/s (Fixed bit rate)

Analog inputs (in E417 only):

The E417 has two analog inputs (microphone and line-in) than can be sent directly to the output.

Each input can be assigned only to one of the possible audio sources. See next point for more

information.

June 2015 - Ed.2.1

Audio over IP decoders E411, E413, E415 & E417 technical manual Page 5

2.2 Audio layers

Decoders can accept up to 10 simultaneous sources or channels, grouped in three categories or “audio

layers”:

Background music:

The purpose of this layer is to be used for the ambience sound. Is the lowest priority layer and accepts

up to 6 sources (channels).

The allowable source types for this layer are: RTP, SHOUTcast / ICEcast, audio files (in continuous

playlist mode) and the analog inputs.

The selection of the channel to be played can be made manually with the web server of the device,

through an external application in a computer or mobile device and with the wall-mount control

TMH60ENA4.

It is also possible to allow the device to automatically change the channel being played if there are no

data to decode (for instance, a break-down in the connection to an internet radio).

The playing of a channel of this layer can be interrupted by the presence of audio in one channel of the

other two layers.

Advertisements:

This is the layer used to play advertisements. It accepts up to 3 channels, each one with its own priority

level.

Allowable source types are: RTP, RTP/SIP, Audio files (in periodic playlist mode) and the analog inputs.

Audio in this layer can interrupt the audio in the Background Music one and can be interrupted by

audio in the Emergency layer.

Emergency:

This is the highest priority layer and accepts only one channel. It is commonly used in PA systems for

evacuation or emergency messages.

The allowable source types for this layer are: RTP, RTP/SIP and the Analog inputs.

This is a summary of the allowable source types in each of the audio layers:

Audio layers

Background

music

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