Inter-m AOE-212N User manual

Operation Manual
Audio Over Ethernet
AOE-212N
* Rack mount products in the Western Hemisphere(North America, South America, and
the Caribbean) do not have handles installed due to customer preference.

AUDIO OVER ETHERNET
Welcome
Welcome
A personal welcome to you from the management and employees of Inter-M
All of the co-workers here at Inter-M are dedicated to providing excellent products with inherently good value,
and we are delighted you have purchased one of our products.
We sincerely trust this product will provide years of satisfactory service, but if anything is not to your complete
satisfaction, we will endeavor to make things right.
Welcome to Inter-M, and thank you for becoming part of our worldwide extended family!
RISK OF ELECTRIC SHOCK
DO NOT OPEN
CAUTION
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK.
DO NOT REMOVE COVER (OR BACK).
NO USER-SERVICEABLE PARTS INSIDE.
REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
ATTENTION : RISQUE DE CHOC ELECTRIQUE
NE PAS QUVRIR
WARNING
To prevent fire or shock hazard, do not
expose the unit to rain or moisture.
*WARNING FOR YOUR PROTECTION PLEASE READ THE FOLLOWING-WATER AND MOISTURE: Unit should not be used near water(e.g.
near a bathtub, washbowl, kitchen sink, laundry tub, in a wet basement, or near a swimming pool, etc). Care should be taken so than objects do
not fall and liquids are not spilled into the enclosure through openings.
*Do not install this equipment in a confined space such as a book case or similar unit.
*Warning : To reduce the risk of fire or electric shock, do not expose this apparatus to rain or moisture and objects filled with liquids, such as vases,
should not be placed on this apparatus.
*This apparatus shall be connected to a mains socket outlet with a protective earthing connection.
* To completely disconnect this apparatus from the AC mains, disconnect the power supply cord plug from the AC receptacle.
* The mains plug of the power supply cord shall remain readily accessible.
CAUTION
*These servicing instructions are for use by qualified service personnel only. To reduce the risk of electric shock, do not perform any servicing
other than that contained in the operating instructions unless you are qualified to do so.
NOTE
*This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are
designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment
generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful
interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will
be required to correct the interference at his own expense.
This symbol is intended to alert the user to the
presence of uninsulated “dangerous voltage” within
the product’s enclosure that may be of sufficient
magnitude to constitute a risk of electric shock to
persons.
This symbol is intended to alert the user to the
presence of important operation and maintenance
(servicing) instructions in the literature accompanying
the appliance.
Caution: To prevent electric shock do not use this (polarized) plug with
an extension cord, receptacle or other outlet unless the
blades can be fully inserted to prevent blade exposure.
Attentions: Pour prévenir les chocs électriques ne pas utiliser cette
fiche polarisée avec un prolongateur, une prise de courant
on une autre sortie de courant, sauf si les lames peuvent
étre insérées à fond sans en laisser aucune partie à
découvert.
Pour deconnecter completement l’appareil du reseau
d’alimentation. deconnecter le cordon d’alimentation de la
prise murale.
La prise du reseau d’alimentation doit demeurer aisement
accessible.

AUDIO OVER ETHERNET
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AOE-212N
Contents
Contents
Unpacking .......................................................................................................................................2
Installation
Environment ...................................................................................................................................2
Important Safety Instructions.............................................................................................................2
Features ...........................................................................................................................................3
Composition and accessory..............................................................................................................3
Front Panel ......................................................................................................................................4
Rear Panel ......................................................................................................................................6
Equipment setting using AOE-212N internal CGI server ........................................................8
Device structure block..................................................................................................................51
How to connect.............................................................................................................................52
Applications ..................................................................................................................................53
Block Diagram ..............................................................................................................................54
Specification..................................................................................................................................55
Service
Procedures....................................................................................................................................57
Schematic.....................................................................................................................................57
Parts List .......................................................................................................................................57
Variations and Options...............................................................................................................57
Warranty .......................................................................................................................................57
FOR EACH TYPE USER NOTICE
Class ‘A’device
(Broadcast device for
business purpose)
This device is business purpose (Class ‘A’)and seller or user should
(Broadcast device for business purpose) be aware of it, and it is to use in
other than home.

AUDIO OVER ETHERNET
2AOE-212N
Installation
Unpacking
Unpacking
Although your AOE-212N is neither complicated nor difficult to operate, we recommend you take a few minutes
to read this brief manual and familiarize yourself with the important information regarding product features,
setup and operation.
As with most electronic devices, we strongly recommend you retain the original packaging. In the unlikely event
the product must be returned for servicing, the original packaging (or reasonable equivalent) is required.
Installation
Environment
Never place this product in an environment which could alter its performance or reduce its service life. Such
environments usually include high levels of heat, dust, moisture, and vibration.
IMPORTANT SAFETY INSTRUCTIONS
1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this apparatus near water.
6. Clean only with dry cloth.
7. Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions.
8. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including
amplifiers) that produce heat.
9. Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades
with one wider than the other. A grounding type plug has two blades and a third grounding prong. The wide
blade or the third prong are provided for your safety. If the provided plug does not fit into your outlet, consult
an electrician for replacement of the obsolete outlet.
10. Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and
the point where they exit from the apparatus.
11. Only use attachments/accessories specified by the manufacturer.
12. Use only with the cart, stand, tripod, bracket, or table specified by the manufacturer, or sold with the apparatus.
When a cart is used, use caution when moving the cart/apparatus combination to avoid injury from tip-over.
13. Unplug this apparatus during lightning storms or when unused for long periods of time.
14. Refer all servicing to qualified service personnel. Servicing is required when the
apparatus has been damaged in any way, such as power-supply cord or plug is
damaged, liquid has been spilled or objects have fallen into the apparatus, the
apparatus has been exposed to rain or moisture, does not operate normally, or has
been dropped.
S3125A
S3125A

AUDIO OVER ETHERNET
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AOE-212N
Features
Features
THE AOE AUDIO over ETHERNET NETWORK is an easy to use solution for transporting audiosignals over
Ethernet TCP/IP based local and wide area networks (LAN/WAN), as well as the Internet.
- REAL TIME 2 CHANNEL AUDIO SIGNAL TRANSCEIVER (TRANSMITTER/RECEIVER)
Ethernet to 2channel analog audio signal real time transmitter, receiver.
- FULL-DUPLEX DATA COMMUNICATION TO ETHERNET NETWORK.
Contact: function of IN/OUT contact data transceiver
(transmitter/receiver). (each of the 8 channels)
Communication: function of serial data transceiver
(transmitter/receiver). (RS-232C, RS-422)
- EXPANSION OF DEVICE
Multicast (1:70) (This function is planned to upgrade)
Unicast (1:20) (This function is planned to upgrade)
Composition and accessory
1. AOE-212N main set x1
2. AC power cord x 1
3. 3P terminal block x 4
4. 4P terminal block x 2
5. 16P terminal block x 2
6. RS-232C cable x 1
7. Rack mount screw x 4
8. Lan cable x 1
※Network setting
· AOE-212N SET can be set to dynamic IP, or static IP.
· AOE-212N SET use the 5454~5474 port, we need for 5454~5474 port is required for port forwarding
or DMZ setting.
· Used under authorized to provide Internet service providers assign a static IP or dynamic IP in case of
WAN network.
· LAN/WAN use is recommended to use a dedicated network configuration.

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Front Panel
Front Panel
1. MONITOR TERMINAL
Terminal monitoring the output signal of selected channel by using 3.5 Фearphone terminal.
2. MONITOR VOLUME
Control the monitor output volume.
3. MONITOR OUTPUT SWITCH
Switch selecting the desired channel output to monitor.
4. SIGNAL LED
LED displaying the input and output audio signals for each channel.
5. LINK / ACT
LED displaying the network status and data status of equipment.
6. LCD
LCD displaying the network (IP, Mac Address, S/W Version, etc.) settings and server connection status in the set.
7. DISPLAY SWITCH
Switch checking out the setting on the display.
When the power switch is ON, the indicator will be it.
Display contents are as below.
1) Inter-M logo + IP Address
AOE-212N AUDIO OVER ETHERNET
PHONES LEVEL
CH 1 CH 2
CH 1
DISP. MODE
CH 2 CH 1 CH 2
OUTPUT LINKINPUT
MONITOR OUTPUT POWER
C
H 1 CH
2
I
NPUT
456
12 87
3
ACT
192.168.1.202

AUDIO OVER ETHERNET
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AOE-212N
2) MAC Address + Bandwidth + S/W Version
3) Audio state
(1) Sever on/off state
(2) Sever on, Quantity of Client access device
(3) Client on/off state
(4) Accessed server IP
4) RS-232 state
(1) Server on/off state
(2) Client on/off state
5) RS-422 state
(1) Server on/off state
(2) Client on/off state
6) PIO state
(1) Server on/off state
(2) Client on/off state
8. Power LED
LED displaying the power supply status of set.
Inter-M:01:05:08
Ver. 1.0.0.1
TX: 3 kbps
RX: 2 kbps
Audio
Server On, 1
Client On
192.168.1.99
RS-232
Server Off
Client Off
RS-422
Server Off
Client Off
PIO
Server Off
Client Off

AUDIO OVER ETHERNET
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Rear Panel
Rear Panel
1. AC INLET
Terminal which inputs the AC power.
2. POWER SWITCH
Switch turning On/Off the AC Power.
3. DC INPUT TERMINAL
Backup battery(24DC) connecting terminal. In case of black out of AC power, connected backup
battery supplies the power to the device. DC 24V input supplies the power to the set regardless of switch On/Off.
4. AUDIO OUTPUT TERMINAL
It consists of 2-channel with balance outputs (Hot, Cold, GND) with transmitted audio output terminal.
5. AUDIO INPUT TERMINAL
It consists of 2-channel with balance outputs (Hot, Cold, GND) with audio output terminal to be transmitted.
6. AUDIO INPUT VOLUME
Control the volume of input audio signal.
Control level is (-10dB ~ +10dB)
7. CONTACT POINT INPUT AND OUTPUT TERMINALS
If contact point signal is inserted in each contact point terminal of transmit AOE-212N device,
contact point signal will be transmitted from the contact point output terminal of transmit AOE-212N device.
Input contact point: Contact point signal can be inserted if pin of each channel is short.
Output contact point: Same signals with input signal will be transmitted on the input contact point of transmitter.
※Caution: Contact point signal is only transmitted when AOE-212N is operated under normal conditions, and please
input the signal after checking out the equipment operation status. Because data is transmitted in real times, signal
will not be transmitted when device is off.
CONTACT OUTPUT
RS-232C
10/100M BASE-T
RS-422
RESET
AC INPUT 220V~ 60Hz
HCG HCG
CH1
HCG
CH2 CH1 CH2
TX+TX RX+RX
MIN MAX
VOLUME VOLUME
HCG
MIN MAX
POWER
OFF ON
DC INPUT
24V
OUTPUT
INPUT
12
35 9
67 8
4
12345678
12345678
CONTACT
INTPUT
12345678
12345678
Output
Input

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AOE-212N
※Example Connect the device to be controlled to the contact point terminal of AOE-212N from point
‘A’, and insert the control signal from the main building, then device of point ‘A’ can be controlled.
8. RS-232C/RS-422 communication terminal
Display the signals inserted in RS-232C or RS-422 terminal on the rear of AOE-212N on the RS-232C and
RS-422 terminals of AOE-212N. For example, if signals, ‘A B C D’ are inserted in the transmitter, signals
‘A B C D’ will be displayed on the receiver.
RS-232C communication: No. 1 pin (Rx), No. 3 pin (Tx), No. 5 pin (GND)
RS-422 communication: Tx+, Tx-, Rx+, Rx-
※Transmit and receive data communication using RS-232C/RS-422 ports supports 1:1
※Example: Connect the device to be controlled to the RS-232/RS-422 terminal of AOE-212 from
point ‘A’, and insert the control signal from the main building, then device of point ‘A’ can be controlled.
9. Network terminal
It is network connecting terminal (RJ-45) and supports 10/100 Base-Tx.
L
A
N
/
W
A
N
6000
SERIES
6000
SERIES
MAIN POINT
6000
S
ER
IES
6000
S
ERIE
S
L
A
N
/
W
A
N
MAIN POINT

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Equipment setting using AOE-212N internal CGI server
Equipment setting using AOE-212N internal CGI server
It provides the web-page to check the status and control of AOE-212N.
※Contents of this Operation Manual are subjected to be changed by revision of firmware. please refer to
“www.inter-m.com/en” for latest one.
※AOE-212N uses HTML5 and Websocket standards, therefore, some browsers may not work. Supported
browsers are as follows:
※AOE-212N web page is optimized for Google Chrome browser.
Ⅰ. Accessing AOE-212N Web-page
Ⅰ. 1 Access to the web-page by using internet browser (Explorer, Chrome, FireFox, etc.)
Ⅰ. 2 Insert the IP address displayed on the front LCD of AOE-212N.
If it is connected normally, user verification window will pop-up..
User verification is required to access the AOE-212N web-page.
Default value for factory setting is as below.
※Please be sure to change the password after the connection you use.
※When properly connected, AOE-212N Web page will be displayed in the browser.
ID PASSWORD REMARKS
Administrator admin 1 All functions admin configuration
User user 1 All functions except system management
Support Support Status
Unsupported
Internet Explorer 8, Internet Explorer 9
Opera, Opera Mini
Android 4.3(Jelly Bean) or less browser
Supported
Internet Explorer 10 or higher browser
Chrome, Chrome mobile
Safari, Safari mobile
FireFox, FireFox mobile
Android 4.4(KitKat) or higher browser

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AOE-212N
Ⅱ. Device mode setup
Use Device mode setup to modify the operating capabilities.
Device Mode Remarks
Legacy mode
(Default Mode)
Sets the default setting of AOE-212N.
Audio/Serial(232/422): set the contact transmissions.
Time Signal MP3/Internet Radio: set the operation times.
(MP3, Internet Radio) Set the source playback schedule.
Internet Radio Set Internet Radio operations.
Set Internet Radio stations.
Contact Output Set the junction interface operations.
Link devices that use the same junction/contacts.

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Ⅲ. Operation setup
※Menu corresponding to the selected menu from Device Mode Setup is displayed. Following menu is displayed when
Legacy mode (Default Mode) is selected from the Device Mode Setup.
Ⅲ. 1 Legacy mode
Ⅲ.1.1 Audio setup
Ⅲ.1.1-1 Setting of audio server
- Select PCM playback mode for Unicast TCP/IP Transition
If Unicast TCP communication is transmitted in PCM playback mode, in Audio setup mode, setting is shown as above.

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AOE-212N
- Select MP3 playback mode for Unicast TCP/IP Transition
If Unicast TCP communication is transmitted in PCM playback mode, in Audio setup mode, setting is shown as above.

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- Select PCM playback mode for Multicast TCP/IP Transition
If Multicast TCP communication is transmitted in PCM playback mode, in Audio setup mode, setting is shown as above.

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AOE-212N
- Select MP3 playback mode for Multicast TCP/IP Transition
If Multicast TCP communication is transmitted in PCM playback mode, in Audio setup mode, setting is shown as above.

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- Select RTSP transition mode
If in RTSP communication mode, in Audio setup mode, setting is shown as above.
Category Contents Default
Selection of
communication
method
TCP/IP - It is the Internet protocol suite (IP), provides reliable, and enables to error-control and
stream control. There are unicast and multicast transmission mode.
RTSP - It is real time streaming protocol and compatible to the other device. It enables to
control the delivery and error.
TCP/IP
Selection of
transmission method
Unicast transfer mode - It is 1:N communication and indicates Server-Client structured
transmission. The Server is able to monitor the information of clients.
Multicast transfer mode - it describes communication where a piece of information is sent from
one or more points to a set of other points. The Server is unable to monitor the information of
clients.
Unicast
Selection of
playback method
PCM(Pulse-code modulation) - It is the uncompressed voice date and the sound quality
determines according to the sampling rate and channel. It consumes a lot of traffic.
MP3 - It describes an audio coding format for digital audio which uses a form of lossy data
compression, but has lower traffic consumption than PCM(About 8~10 times of traffic reduced
compared to the PCM)
PCM
Selection of
playback info
Sampling rate - More sampling rate higher it is similar to the original sound, but the capacity
is bigger (TEL: 16KHz, CD AUDIO 44.1kHz, DVD AUDIO 48kHz)
Channel - There are a single audio channel (MONO) and two audio channels (Stereo).
Bitrate - It describes the quality of MP3 audio file and the audio with the higher bitrate sounds
more clear, but more capacity.
Sampling rate 48,000
Hz Channel
Stereo(2Ch)
Selection of
operating
information
IP address - It is used for multicast mode and the IP address set by server is sent
to the corresponding multicast group. Port - Select the desired port for
servers operating. It cannot choose the duplicated port.
Port: 5454
Apply
After completing the changes to the equipment, press the Apply button to saves
the updated settings.
Initialize Reverts to the default setting.

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AOE-212N
Ⅲ.1.1-2 Audio Server Monitoring
Once the audio server configuration is completed, one can monitor the audio server status as shown above.
- A pop-up window will display when the client list number is selected.
Category Contents Default
Start Starts the Audio Server with the currently stored information.
Stop Stops the Audio Server.
Reset Stop and reset the Audio Server settings.

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Ⅲ.1.1-3 Settings of audio client
※Audio client receives the server’s information and sets the playback operations automatically.
- Allows to receive Unicast TCP/IP communication
If Unicast TCP communication is receiving, in Audio setup mode, setting is shown as above.

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AOE-212N
- Allows to receive redundant Unicast TCP/IP communication
If Unicast TCP communication is receiving, in Audio setup mode, setting is shown as above.

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※Server Dualization
The main purpose of server dualization is assuring redundancy. Audio can be received from a secondary or sub-server
in the event of trouble or failure from the main server. The Secondary Server is only used to enable redundancy if the
AOE-212N main server is not able to transmit/receive un the event of network or equipment failure.
When the AOE-212N Client is configured with dual redundant server, The AOE-212N Client will automatically switch to
the secondary or sub-server when the primary server is un expectedly interrupted allowing for seamless uninterrupted
audio broadcast.
※Reference: When using only one AOE-212N Server on a network the disconnect probability is 1/1,000. On the other
hand, if use dual redundant Servers are used as above, the disconnection ration will be decreased to
1/1,000,000.
※Server setting
Configure two AOE-212Ns as Servers with 2 different IP addresses. Connect the first AOE-212N and name it as main-
server and name the second AOE-212N as sub-server. This is done via the by web-browser in the ‘Network setup’ of
‘System setup’ Menu on the left side menu.
Activate the server mode by selecting in the ‘Audio setup’ on the left side menu, then checking on “Start” box in “Audio
server” section.
※Main server and sub-servers IP address must be set with different values.
※Main server and sub-servers must be connected to same audio source.