AEQ PHOENIX ALIO User manual

AEQ PHOENIX ALIO
Portable IP Audiocodec that is easy to configure and use
Optimized for OPUS encoding algorithms
USER’S MANUAL
ED. 12/17
V. 1.0 - 20/12/2017
Firmware Versions: CPU 6.80 / DSP 3.35 / FPGA 5.54 or higher
Software Version: AEQ ControlPHOENIX 2.2.1.20 or higher

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CONTENTS
1. INTRODUCTION.......................................................................................................................5
1.1. General description............................................................................................................5
1.2. Technical characteristics....................................................................................................5
1.3. Available encoding algorithms...........................................................................................6
1.4. Block diagram. ...................................................................................................................7
1.4.1. Internal diagram......................................................................................................7
1.4.2. Audio matrix............................................................................................................8
1.5. Compatibility with other AEQ codecs...............................................................................10
1.6. Compatibility with third-party codecs. ..............................................................................10
2. PHYSICAL DESCRIPTION OF THE UNIT.............................................................................11
2.1. Description of the right panel and connections................................................................11
2.1.1. Headphone 1 and 2 outputs..................................................................................11
2.1.2. Line inputs ("LINE IN")..........................................................................................11
2.1.3. Line outputs ("LINE OUT")....................................................................................12
2.2. Description of the back panel and connections...............................................................12
2.2.1. Microphone inputs ("MIC1", "MIC2", "MIC3" and "MIC4"). ...................................12
2.2.2. Ethernet port. ........................................................................................................13
2.2.3. Power supply.........................................................................................................13
2.2.3.1. Using an external powerbank as an UPS..............................................13
3. USER INTERFACE DESCRIPTION. MANUAL CONTROL. .................................................15
3.1. OLED Screen...................................................................................................................16
3.2. Navigation / Channel encoder ("NAVI / Ch"). ..................................................................17
3.3. Vumeters..........................................................................................................................17
3.4. Alphanumeric keyboard and call buttons.........................................................................18
3.5. Inputs control....................................................................................................................19
3.6. Outputs control.................................................................................................................20
3.7. Function keys...................................................................................................................21
3.7.1. MODE keys ("IP" and "SIP").................................................................................21
3.7.2. "AUTO" key...........................................................................................................22
3.7.2.1. SmartRTP / AutoAnswer.........................................................................22
3.7.2.2. Auto Hang-Up. ........................................................................................22
3.7.2.3. Permanent call. .......................................................................................22
3.7.3. "CODEC" key........................................................................................................22
3.7.4. "HELP" key............................................................................................................23
3.7.5. "MENU" key. .........................................................................................................24
3.7.5.1. "ETHERNET" submenu. .........................................................................24
3.7.5.2. "COMMUNICATIONS" submenu............................................................25
3.7.5.3. "MAINTENANCE" submenu....................................................................26
4. CONFIGURATION AND OPERATION FROM REMOTE CONTROL SOFTWARE.............. 28
4.1. Individual codec control window. .....................................................................................28
4.1.1. CONFIG Menu......................................................................................................29
4.1.2. Mixer control window. ...........................................................................................32
4.1.3. Vumeters window..................................................................................................33
4.2. Connection modes...........................................................................................................34
4.2.1. RTP Point to Point (RAW).....................................................................................34
4.2.2. PROXY SIP...........................................................................................................35
4.2.3. DIRECT SIP..........................................................................................................37
4.2.4. Sending audio to multiple destinations: Broadcast, Multicast and Multi-unicast.. 38
4.3. NAT TRAVERSAL. ..........................................................................................................41
4.3.1. Operation without NAT: "OFF (there is no NAT)".................................................42
4.3.2. Manual NAT: "MANUAL (router configuration)"....................................................42
4.3.3. AUTO 1 (local network audio)...............................................................................43
4.3.4. AUTO 2 (local network audio)...............................................................................43
4.3.5. AUTO 3 (audio over internet)................................................................................43

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4.3.6. AUTO 4 (audio over internet)................................................................................44
4.4. FEC modes and reception buffer configuration. ..............................................................44
4.5. Coding algorithm selection...............................................................................................45
4.6. Ethernet Port configuration..............................................................................................46
4.7. SNMP configuration.........................................................................................................46
4.8. Password configuration....................................................................................................48
4.9. User interface lock...........................................................................................................49
5. QUICK USER’S GUIDE. LOCAL OPERATION..................................................................... 51
5.1. Connecting the unit..........................................................................................................51
5.1.1. Power supply.........................................................................................................51
5.1.2. Audio.....................................................................................................................51
5.1.3. Communications interface. ...................................................................................51
5.2. Turning the unit on...........................................................................................................51
5.3. Establishing a communication. ........................................................................................51
5.3.1. Establishing an IP communication in RTP mode using SmartRTP......................52
5.3.1.1. Ending an IP communication in RTP mode............................................53
5.3.2. Establishing an IP call in PROXY SIP mode. .......................................................54
5.3.2.1. Ending an IP call in PROXY SIP mode...................................................55
5.3.2.2. Receiving and accepting an IP call in PROXY SIP mode.......................55
5.3.3. Establishing an IP call in DIRECT SIP mode........................................................56
5.3.3.1. Ending an IP call in DIRECT SIP mode..................................................57
5.3.3.2. Receiving and accepting an IP call in DIRECT SIP mode......................57
6. QUICK START GUIDE. REMOTE CONTROL.......................................................................59
6.1. Equipment connections....................................................................................................59
6.1.1. Power supply.........................................................................................................59
6.1.2. Communications interface. ...................................................................................59
6.2. Turning the unit on...........................................................................................................59
6.3. Setting up a computer to control the unit.........................................................................59
6.4. Audio................................................................................................................................60
6.5. Establishing an IP communication...................................................................................60
6.5.1. Establishing an IP communication in RTP mode using SmartRTP......................60
6.5.1.1. Ending an IP communication in RTP mode............................................62
6.5.2. Establishing an IP call in PROXY SIP mode. .......................................................62
6.5.2.1. Ending an IP call in PROXY SIP mode...................................................65
6.5.2.2. Receiving and accepting an IP call in PROXY SIP mode.......................65
6.5.3. Establishing an IP call in DIRECT SIP mode........................................................66
6.5.3.1. Ending an IP call in DIRECT SIP mode..................................................68
6.5.3.2. Receiving and accepting an IP call in DIRECT SIP mode......................68
7. CONTROL TERMINAL OVER WEB BROWSER. .................................................................70
7.1. Upgrading system firmware.............................................................................................70
7.2. Configuring the MAC address associated with the Ethernet interface. ...........................71
7.3. Technical Assistance Service and on-line manuals.........................................................72
7.4. Saving and loading configurations...................................................................................72
7.5. Screen capture.................................................................................................................73
7.6. Status menu.....................................................................................................................73
7.7. SNMP...............................................................................................................................73
7.8. Remotely rebooting the equipment..................................................................................74
8. TECHNICAL SPECIFICATIONS ............................................................................................75
9. A.E.Q. WARRANTY................................................................................................................76
APPENDIX A: GENERAL CHARACTERISTICS OF ENCODING MODES..............................77
APPENDIX B: PROTOCOLS ASSOCIATED WITH IP COMMUNICATIONS...........................79
B1. Circuit switching versus packet switching. .......................................................................79
B1.1. Circuit switching.....................................................................................................79

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B1.1.1. Advantages:.............................................................................................79
B1.1.2. Disadvantages:........................................................................................80
B1.2. Packet switching....................................................................................................80
B1.2.1. Switching modes......................................................................................80
B1.2.2. Advantages:.............................................................................................80
B1.2.3. Disadvantages:........................................................................................81
B2. IP protocol.........................................................................................................................81
B2.1. IP addressing.........................................................................................................82
B2.2. Unicast vs. Multicast..............................................................................................82
B3. RTP protocol.....................................................................................................................83
B3.1. Default PHOENIX ALIO configuration...................................................................84
B4. SIP protocol......................................................................................................................84
B4.1. Working modes......................................................................................................84
B4.2. Possible work scenarios........................................................................................86
B4.3. PHOENIX ALIO default SIP configuration.............................................................86
B5. STUN protocol..................................................................................................................87
APPENDIX C: PORTS USED BY PHOENIX EQUIPMENT.......................................................89
APPENDIX D: APPLICATION NOTES GUIDE..........................................................................90
D1. Internet connection using standard cable access............................................................90
Application note AN0A....................................................................................................90
Application note AN0B....................................................................................................90
Application note AN0C....................................................................................................90
Application note AN0D....................................................................................................90
Application note AN0E....................................................................................................90
Application note AN0F. ...................................................................................................90
Application note AN0G....................................................................................................90
Application note AN0H....................................................................................................90
D2. Special applications using different kinds of Internet physical accesses, or point to point
connections......................................................................................................................90
Application note AN1.......................................................................................................90
Application note AN2.......................................................................................................90
Application note AN3.......................................................................................................90
Application note AN4.......................................................................................................90
Application note AN4B....................................................................................................90
Application note AN5.......................................................................................................90
Application note AN6.......................................................................................................90
APPENDIX E: ADDITIONAL INFORMATION............................................................................ 91

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1. INTRODUCTION.
1.1. General description.
AEQ PHOENIX ALIO is a stereo IP audiocodec for mobile applications. It is easy to configure
and operate, and integrates a digital mixer with 4 analog inputs.
It features independent bass and treble control for each input, adapting the characteristics of
each speaker’s voice, or correcting the defects of external signals.
It has been specifically designed for sports reporting applications, but it has also been optimized
to make it easy to use in the most varied scenarios, even musical events.
Its IP connectivity allows the user to choose among a wide variety of connection modes:
dedicated networks, DSL, cable – modem, fiber optic, WiFi, Wig-MAX, Inmarsat satellite, etc.
The application notes listed at the end of this manual provide information about how to operate
the unit in each case. AN-5B stands out among them, describing a simple and effective way to
connect the audiocodec to 3G and 4G networks, as well as to WiFi hotspots through a router
and modem that can be provided by AEQ or obtained locally.
PHOENIX ALIO is optimized for OPUS encoding algorithms, but it is also compatible with other
AEQ and third-party audiocodecs, as it also features AEQ LD Extend modes and the mandatory
algorithms according to EBU-TECH 3326 specification from EBU N/ACIP work group.
When connecting to another AEQ codec, users can take advantage of an exclusive set of tools
that makes initating communications and control of the unit a simple task:
•The "SmartRTP" proprietary call-initiation protocol that simplifies connection to compatible
codecs.
•"AEQ ControlPHOENIX", remote control Software that allows for the remote operation and
adjustment of the unit from your station. ControlPhoenix allows you to control everything
related to the call initiation process and also the adjustment of all audio parameters and the
local audio routing of ALIO.
•"HELP" function, that allows the journalist to use the system to request for assistance from
the station when facing an unexpected situation.
By default, PHOENIX ALIO offers a stereo or mono channel for the program signal with its
corresponding return. A second bidirectional, mono or stereo channel for coordination or
redundancy purposes can be activated by purchasing its license (that activation can be
accomplished from "AEQ ControlPHOENIX" application and is detailed in section 6.4 of the
application user’s manual).
PHOENIX ALIO is powered from mains. Optionally, it can be equipped with an UPS that is
mains-charged and can provide more than 120 minutes of autonomy, and can also feed a
3G/4G router – modem set and even charge mobile devices.
There is a quick start guide available in chapter 5 of this document. However, it is
strongly recommended to carefully read this manual and the "AEQ ControlPHOENIX"
user’s guide before using the unit.
1.2. Technical characteristics.
-4 female XLR-3 microphone inputs. Low noise preamplifier and switchable Phantom
power supply. 2 KΩinput impedance.
-2 female XLR-3 line inputs, with 9 KΩimpedance, 0dBu, nominal level, max. 20 dBu.
-2 male XLR-3 outputs. Output impedance: < 100 Ω, nominal level, 0dBu, max. 20 dBu.
-2 - ¼" Jack stereo headphone outputs, with volume control and TX/RX balance
adjustment from front panel.

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Communications interface:
-IP Ethernet port interface, RJ45 connector.
-Two independent links can be established (when an optional 2
nd
channel is purchased)
using the same interface.
-Satellite: an external satellite interface can be connected to the IP interface.
-3G / 4G telephony: a 3G or 4G modem can be connected to the IP interface.
-Wireless data links: a "wireless bridge", WiMax or WiFi antenna can be connected to
the IP interface.
Other features:
-Front user panel with keyboard and rotary encoders.
-OLED graphic display.
-2 stereo LED VU-meters.
-Operating temperature range: -10 to +45 º C (14 to 114 º F).
-Dimensions: 242 x 210 x 60 mm (9.5 x 8.3 x 2.4 inches).
-Power supply: 15V DC (9 to 18V DC).
-Power consumption: 12W max.
-External adapter: universal 90-263V input.
-Optional UPS with 12V output for the audiocodec and two USB ports for router supply
and/or mobile devices charging.
AEQ offers the "SmartRTP"call initiation protocol in order to greatly simplify the
operation of the audiocodec.
AEQ also offers two SIP servers free of charge as a standard service for the users of
Phoenix ALIO. One of them is configured as main and the other is provided as a backup.
More information can be found in Appendix B.
1.3. Available encoding algorithms.
•OPUS with Fs= 48 KHz, mono, stereo, with 4 mono and 3 stereo presets. Bit rates
between 12 and 192 Kbps, very low delay and audio bandwidth between 6 and 20 KHz.
•G711 A-law, u-law (64 Kbps, low delay, 3.5 KHz audio bandwidth).
•G722 (64 Kbps, low delay, 7 KHz audio bandwidth).
•AEQ-LD with Fs=16, 32 or 48 KHz, mono or stereo. Available bit rates between 64 and
384 Kbps, audio bandwidth between 7 and 19 KHz.
•MPEG 1 and 2 - LII, with Fs between 16 and 48 KHz, mono, stereo, dual channel and
Joint stereo. Binary bit rate between 64 and 384 Kbps. Audio bandwidth between 10.5
and 16.5 KHz.
•PCM (linear): very low delay, transparent quality. Fs=48 or 32 KHz with 12, 16, 20 or 24
bits/sample, mono or stereo (bit rates between 576 and 2304 Kbps), audio bandwidth
between 16 and 20 KHz.
Additional encoding modes can be considered according to each customer’s specific needs,
such as:
•AAC-LC*:
oMode: Mono / stereo / MS stereo. Sampling frequency: 24 / 32 / 48 KHz
oBitrate: 32 / 64 / 96 / 128 / 192 / 256 Kbps
•AAC-LD*:
oMode: Mono / stereo / MS stereo. Sampling frequency: 48 KHz
oBitrate: 32 / 64 / 96 / 128 / 192 / 256 Kbps
*Operation with two AAC simultaneously not supported.
Please contact AEQ Sales Department or authorized dealers for more information.

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1.4. Block diagram.
1.4.1. Internal diagram.
The unit’s internal design is organized in several functional modules that make Phoenix ALIO
audiocodec a complete IP communications platform. The unit is provided with a professional
quality analog audio input and output system and a versatile audio matrix with processing
capabilities. A simplified view of the distribution of these modules into the equipment’s
motherboard is presented below, as well as a brief description of each module’s functionality:
Internal Phoenix ALIO layout detail
-The audio part (ANALOG I/O) integrates 4 microphone preamplifiers featuring
programmable digital gain as well as the line level balanced inputs and outputs together
with two stereo headphone outputs able to drive both high and low impedance sets.
-The power supply section (POWER) converts the DC input (12V/1A) to the different DC
voltages required inside the unit.
-The FRONT PANEL is connected to the CPU, and consists in an OLED display where
the control and configuration menus are displayed, as well as a set of keys and
indicators associated to the operation of the unit such as the alphanumeric keyboard,
rotary encoders and four high-resolution LED vumeters.
-The CPU is a high-performance and low-power ARM processor in charge of several
tasks such as the user interface, configuration of the other programmable elements
(DSP, FPGA, audio processor, preamplifiers, etc.) and the management of IP
communications, etc.
-The DSP (FIXED POINT DSP) is a high-performance fixed-point processor that carries
out the encoding and decoding of up to two stereo channels using different
compression algorithms and as later described in this manual.
-The audio matrix (AUDIO MATRIX & MIXER) is implemented using a new-generation
low power FPGA, with 6 inputs + 2 stereo receiving buses / 6 outputs + 2 stereo
transmitting buses. The FPGA can perform any crosspoints combination with great
dynamic range and is controlled by the CPU. It also relies on a specialized co-
processor (AUDIO PROCESSOR) that provides individual low and high frequency
adjustment for each input.

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-The network interface (NET I/F) is an Ethernet 10/100 Mbps interface that allows for
both audio transmission / reception and remote control of the unit through a single port.
The functionality of this port can also be for the connection of standard equipment to
access Wi-Fi, 3G/4G and satellite networks as described in specific application notes
available on AEQ’s website aeq.eu or aeqbroadcast.com.
1.4.2. Audio matrix.
The different audio sources are first converted to digital format (24 bits / 48 KHz sampling rate)
to be processed by a digital audio matrix. Once the outputs are obtained, they are converted
back to analog format:
Audio input/output structure
The following figure shows the internal buses for transmission, reception and CUE of both
communications channels that are calculated in the audio matrix, so the user can better
understand what can be done with the different audio sources and what can be listened at the
different outputs.
As can be seen, each input (4 microphones or 3 microphones + LINE IN) can be routed to any
of the transmit buses (program or coordination) or to CUE pre-listen bus. At the same time, we
can select what to listen at any of the outputs (LINE OUT + 2 stereo headphones), Program or
Coordination buses (choosing the mix level between send and return directions) or the local
CUE pre-listen bus.

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Audio matrix structure
The assignment of mono and stereo signals is performed automatically (for example, if MIC 2 is
routed to the transmit bus of a channel where a stereo coding algorithm has been selected, the
unit will make a crosspoint to both L and R. However, if the line input is sent to a mono channel,
a crosspont creating a L + R sum (attenuated by 6dB) will be accomplished. Just in the same
way, if we want to listen to a mono-encoded channel in the headphones, the signal will be
routed to both sides.
The send buses are accessed through back-lit keys and their colour also denotes to what
SEND-bus the corresponding audio input routed (RED=Program, GREEN=Coordination,
off=CUE). The same colour convention is used for the outputs. The user can select what bus to
monitor by simply pressing on the corresponding rotary encoder. The control of the listening
level is done with the associated rotary encoder and is also visible through level bars on the
OLED display. TX / RX mixing level is controlled with potentiometers associated to each output.

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1.5. Compatibility with other AEQ codecs.
PHOENIX ALIO offers the possibility to connect to other AEQ codecs.
It is compatible with Phoenix MERCURY, STUDIO, VENUS, VENUS V2, VENUS V3,
STRATOS and MOBILE.
The "SmartRTP"mode and OPUS encoding algorithm can be used with Phoenix MERCURY,
STUDIO, VENUS, VENUS V2, VENUS V3 and STRATOS updated to firmware version 5.20 or
above.
1.6. Compatibility with third-party codecs.
PHOENIX ALIO is a portable IP audiocodec compatible with EBU-TECH 3326 technical
specification from EBU N/ACIP workgroup. This technical specification was developed to
guarantee compatibility between equipment from different manufacturers in applications for
professional-quality audio contribution over IP networks. Therefore it is possible to connect
PHOENIX ALIO with any codec from other manufacturer over IP provided that this unit has
been developed according to N/ACIP (please check third-party codecs technical specifications).

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2. PHYSICAL DESCRIPTION OF THE UNIT.
Before anything else, it is necessary to become familiar with the connectors and other elements
present in the back, right and front panels of the unit in order to understand the wiring and
installation required for the PHOENIX ALIO.
2.1. Description of the right panel and connections.
2.1.1. Headphone 1 and 2 outputs ("HP1"y "HP2").
¼" Headphone Jack. Unbalanced connection.
¼" Jack pinout
2.1.2. Line inputs ("LINE IN").
XLR-3 female connector. Balanced connection.
L input - Female R input - Female
XLR-3 pinout
Pin 1 Ground
Pin 2 + Input
Pin 3 - Input
(Connectors as seen from the soldered
side)
A
A
B
C
B

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2.1.3. Line outputs ("LINE OUT").
XLR-3 Male connector. Balanced connection.
L output - Male R ouput - Male
XLR-3 pinout
Pin 1 Ground
Pin 2 + Output
Pin 3 – Output
2.2. Description of the back panel and connections.
2.2.1. Microphone inputs ("MIC1", "MIC2", "MIC3" and "MIC4").
XLR-3 female connector. Balanced connection.
Input - Female Male plug - cable
XLR-3 pinout
Pin 1 Ground
Pin 2 + Input
Pin 3 - Input
(Connector as seen by the soldered
side)
C
(Connector as seen by the soldered side)
A
A
B
C

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All microphone inputs (MIC1, MIC2, MIC3 and MIC4) feature low-noise preamplifiers and are
able to provide Phantom supply (+12 V DC / 10 mA). These can be enabled from each input’s
menu (see section 3.5), in order to offer compatibility with both dynamic or condenser
microphones. The range of the preamplifier gain is wide range (0 to 65dB) making it suitable for
a large range of microphone models available on the market.
2.2.2. Ethernet port.
PHOENIX ALIO features one Ethernet port. Using this port, the unit can be connected to a LAN
or WAN network and send / receive audio over IP. This port is also used to configure and
administrate the unit from one or more computers using the remote control software.
Please refer to "AEQ ControlPHOENIX"application manual.
The connector is a standard RJ45 10/100 BT, type, with the following pin assignment:
RJ45 connector pinout
2.2.3. Power supply.
PHOENIX ALIO can be powered by an external, specifically designed 15V DC (or 12V DC)
power supply. The unit can be connected to the provided charger either directly or using an
optional UPS in cascade. It cannot be connected directly to a vehicle battery without connecting
the mentioned optional UPS or an equivalent voltage stabilizer.
The power cable termination is fitted with a special connector featuring a locking mechanism to
prevent accidental disconnections.
2.2.3.1. Using an external powerbank as an UPS.
An external, small and portable battery has been
homologated as an optional accessory to Phoenix
ALIO. It can operate as an UPS and also provide a
certain degree of portability to the unit, as it can
provide supply for full operation during about 4 hours
when fully charged.
The recommended model is XT-16000QC2 from XT
Power.
In order to use this powerbank as an UPS, a specifically designed adapter must be used. This
adapter can be purchased from AEQ and allows for charging of the battery at the same time as
the PHOENIX ALIO gets power using the same AC/DC power adapter supplied with the unit
(15V DC). In case that a mains cut happens, no operation interruption will be produced as long
as the battery has enough charge.
C
B

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Configure the powerbank's output voltage to 12V by means of its lateral key and check this
configuration in its display, where also the percentage of charge and the current charge status
are displayed. If it is deeply discharged, please provide charge for some minutes without ALIO
connected until at least a 10% percertage of charge is displayed.
This device also features additional USB ports. One of them remains free even when using
AEQ UPS adapter, and can be used to charge phones (producing a logical reduction in the
duration of the battery) or to power an external 4G modem-router. Please check application
note AN-5 for more details.
NOTE: If this powerbank is purchased locally, please contact AEQ to obtain the special UPS
adapter for ALIO.
IMPORTANT NOTE: There is another homologated powerbank model (MP-10000, also from
XT Power) with a different adapter associated and that requires to use the 12V DC power
supply of PHOENIX ALIO. Please make sure that you're using the right combination of
powerbank, adapter and power supply. In case of doubt, please consult the Technical
Assistance Service ([e-mail]).
CAUTION: Due to risk of fire or explosion, avoid exposure of the powerbank to
shocks, temperatures above 45ºC, liquid pouring, etc.
The unit should be opened ONLY by qualified personnel.
(Please read the manufacturer’s recommendations for more details)

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3. USER INTERFACE DESCRIPTION. MANUAL CONTROL.
Configuration and operation of the Phoenix ALIO unit can be done either using the equipment
front panel controls featuring an OLED screen and associated controls and indicators, or
remotely using the "AEQ ControlPHOENIX" application (Control and Configuration software
for AEQ Phoenix STRATOS, STUDIO, MERCURY, VENUS, VENUS V2, VENUS V3 and ALIO
audiocodecs). This chapter describes the first mode.
Functional areas or sections of the user interface are described next:
CONTROL SURFACE
USER INTERFACE LOCK: From CPU version 6.80 and alter, it is possible to lock certain
functions of the user panel from the control software. These functions are disabled in groups
and, this way, improper operation of the unit by users with little experience can be avoided. In
order to get more details about which functions can be locked, check section 4.9 of this manual.
OLED display
6 FUNCTION KEYS:
oIP: RTP / Smart RTP modes
oSIP: N/ACIP compatible mode
oAUTO: SmartRTP, auto answer, etc.
oCODEC: codecs list
oHELP: remote support
oMENU: advanced options
Output controls: listening
level for headphones 1 and
2 and line output with TX /
RX balance control
Alphanumeric keyboard
and call buttons
Vumeters
The control surface has been designed bearing in
mind that, quite often, it is not possible to send a
qualified technician to accomplish an outside
broadcast. It can be totally controlled from the station,
and also locally operated by choosing among several
simple options, that are further simplified when
connected to another AEQ Phoenix audiocodec. A
more detailed configuration can be carried out by
setting up the parameters under the MENU key.
A
C
D
F
G
Navigation /
Channel
encoder
B
Input controls: Mic and line
level adjustments with
"ON" channel buttons
E

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3.1. OLED Screen.
High-contrast OLED screen with wide viewing angle. 256 x 64 pixels resolution in gray scale.
When Phoenix ALIO is powered-up, after a delay of approx. 15 seconds (that doesn’t indicate
any malfunction in the unit), two welcome screens will appear sequentially; the first one shows
AEQ logo and the second one displays the audiocodec model:
Detail of welcome screens
After a while, the display changes to show the MAIN STATUS screen, where the configuration
of the different inputs and outputs is presented:
Detail of the MAIN STATUS screen
This screen is divided in 7 columns.
From left to right, the first 4 correspond to the 4 active inputs.
The first three ones are always MIC1, MIC2 and MIC3. The fourth can correspond to MIC4 or
LINE IN. This can be selected through the MIC4/LINE menu or through the "#" shortcut key in
the numeric keyboard (the label under the level bar will change accordingly between "MIC4" and
"LINE"). Finally, the three last columns correspond to the outputs (HP1, HP2 and OUT, as
indicated under each level bar).
Each bar represents a relative mix level or output volume.
Each MIC input can also display a "PH" legend above the level bar, indicating that the input has
its corresponding 12V phantom power supply activated.
Also, the input names can appear highlighted as MIC1 in the above example screen. This
indicates that a process (equalization) is applied to the input signal.
Above each output level bar there is a label showing "PGM", "COOR" or "CUE". These are
indicating what program bus is being monitored on each of the outputs.
This display can also display the different operation and configuration menus that are accessed
and browsed through the navigation ("NAVI / Ch") rotary encoder and the rest of keys and
encoders. Details will be provided later on in this chapter. The display also provides detailed
information about active calls, if any. In case that any function of the user interface is locked and
you try to access to this function, the display will show the "LOCKED - ACTION DISABLED"
indication for a few seconds (see section 4.9 of this manual).
To save power and if the unit is "idle", the intensity of the display is dimmed after a while;
normal brightness will be immediately recovered when any control is touched.
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3.2. Navigation / Channel encoder ("NAVI / Ch").
This rotary encoder allows the user to browse through the different menus of
the OLED multifunction screen. Turning it changes the selection among the
options presented, moving the highlighting up and down. When the encoder
is turned clockwise, the option selected is moved down, and turning it anti-
clockwise, the option selected is moved up.
Pressing its button is equivalent to ENTER, validating the highlighted
selection at that moment.
This rotary encoder has a second use. If the the second, optional channel (coordination COOR)
is activated and no menu is being presented on the display, pressing the encoder will make the
user interface change between PGM and COORD.
Tha modification of any of the parameters pertaining to the selected channel does not affect the
selected operation of the other channel; if we are modifying the configuration for program
(PROG), the status for coordination (COORD) will remain the same, with its communication,
operating modes, etc. unaltered.
The active channel is clearly indicated by the "PROG" and "COORD" labels located between
the vumeters. When a call or communication is established in the channel that is not active, the
label will blink while the other remains steadily lit.
3.3. Vumeters.
The unit is equipped with two stereo vumeters. From
above, the first one is indicating the level of the TX
signal. The second indicates the level of reception,
RX. If the unit has the second optional coordination
channel activated the vu meters will follow the "NAVI /
Ch" encoder and will display the levels corresponding
to the active channel and with the labels "PROG" and
"COORD" between the vumeters and as explained
above.
Each of the 4 vumeters consists in 2 bars of 20 LEDs each. From right to left, the three first
LEDs are red followed by four orange coloured ones. The remainders of the LEDs are green.
The scale applied has higher resolution around the transition between green and yellow colors.
Please note that the presence of audio is denoted at -36 dBV when the first green LED is
illuminated. Transition from green to yellow is at 0 dBV, from yellow to red is at +7 dBV and,
when all 3 red LEDs are on, displayed level corresponds to +13 dBV or higher.
B
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3.4. Alphanumeric keyboard and call buttons.
Standard numeric keyboard with 12 keys that,
among many other functions, allows the user to
dial IP addresses and port numbers in when
calling in RTP mode, or to type letters and
symbols when in SIP (Session Initiation
Protocol) mode.
It can also be used to type text: just press each
key repeatedly to switch between the different
letters available for the same key, just like you
would do to type an SMS on a mobile phone.
Depending on the status, the "OK" key (with a green telephone) allows the user to initiate a call
or accept an option within a menu. On the other hand, the "ESC / DEL" key (with a red
telephone) can hang up a communication, delete or go back in a menu (it will also light in red for
around 15 seconds when the unit is turned on, until the welcome screens appear).
When the "OK" key is pressed from the idle screen to make a call, the alphanumeric keyboard
gets illuminated in red when the call is to be made in PROG, or in green when the current
channel is COORD.
Dialing in PROG Dialing in COORD
The keys are illuminated laterally; this way it is possible to determine whether the channel is
PROG or COORD even by color-blind people
NOTE: The * key shifts between capitals, lower case and numbers. When you are typing, keys
1 and # allows you to enter special characters (@ and "." among them) and key 0 can generate
number "0" or spaces.
The # key is also a shortcut to switch between MIC4 and LINE (provided that we are not typing
into a text menu).
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3.5. Inputs control.
Each input has an associated rotary encoder with
pushbutton and an activation/routing key (ON). If the
rotary encoder is turn, the mix gain to the selected bus
is altered for that input, between mute (-infinity) and
+18 dB. The level bar at the display shows an
indication of this level.
The ON buttons allows the user to select which bus the
associated input will be sent to. When it is off, pressing
it will turn the button RED-illuminated, indicating that
the input is sent to PROGRAM transmission channel.
One more pressing and the key will be illuminated in
GREEN, indicating that the channel is sent to COORDINATION transmission. If it is pressed
once again, it will be off again, and the input will only be available locally in the CUE pre-listen
bus.
The selection is cyclic for each input:
When several inputs have their ON button illuminated in the same color, they will be mixed
(each source according to the selected mix level) to the selected bus (PROG, COORD or CUE).
When the encoder button is pressed, access to the associated input’s configuration menu is
provided. Here the user can configure the corresponding gain, equalization (bass/treble),
activation of the 12V Phantom supply and in the case of MIC4 / LINE input, the user will also be
able to select which input is used (microphone 4 or the line input at the right panel).
WARNING: DO NOT turn Phantom power on or off for a microphone unless the Microphone
Gain is set to minimum. Depending on the microphone model and its specifications, the
negative of observing this procedure may result in very high level and high pitched noise that
could be routed to the units communication buses and the headphone outputs.
The corresponding input encoder can be used to navigate within the menu, or alternatively, the
"NAVI / Ch" rotary encoder can also be used. The "BACK" option in each menu or the "ESC /
DEL" key can be used to cancel and go back.
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PROG
COOR
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The "EQ" indication in the main screen (input name highlighted) will become active whenever a
value different to 0 dB is selected for either the bass or treble controls, as previously explained.
The "MIC4/LINE" input menu is slightly different, as there is an additional option to select
between MIC4 and LINE IN:
The fourth input is a line input in this example. Note that the Phantom option becomes
unavailable until the input is switched to MIC4.
NOTE: When browsing an input menu, the user can quickly change to configure another input
by simply pressing the corresponding encoder button. From now on, the modifications made
correspond to the newly selected input.
3.6. Outputs control.
The unit has 3 stereo outputs: 2 for headphones, able to drive both high and low impedance
models with ¼" TRS or jack connectors and 1 balanced line output with 2 male XLR connectors.
All of them are located in the right panel of the unit.
Each output has a labeled control section ("HP1", "HP2" and "LINE OUT"), located at the
bottom right area of the front panel.
TX / RX level balance potentiometer: Allows the user to
continuously adjust which ratio of the corresponding output
comes from the channel local transmission (TX, send) and
what from the same channel reception (reception, RX).
When in the central position, equal levels of RX and TX
will be listened to, both with 6dB attenuation.
Output level encoder: Adjusts the listening level of the
corresponding output. It will be displayed on the OLED
with level bars.
Pressing the output level encoder button cyclically selects
the source bus for that output bus, between CUE
(SOURCE LED off), PROG (SOURCE LED illuminated
red) or COORD (SOURCE LED illuminated green). The
display will show a label above the corresponding level
bar:
In the main screen, the display will show the level and source selected for each
output.
Operation is the same for the potentiometers, encoders, SOURCE LEDS and main display for
all HP1, HP2 and LINE OUT outputs.
NOTE: Adjust the volume with caution; excessive listening levels can damage your hearing.
F
PROG
COOR
CUE