Router Selector Manual v2.5
Axia Router Selector Node
Installation & User’s Guide
Manual Version 2.5 rev May, 2009
Node Software 2.5.2g and higher
Axia nodes are intended for use with an Ethernet
Switch that supports multicast and QoS (Quality
of Service). On a non-switched Ethernet hub, or a
switch that is not enabled for multicast, this will result in network congestion that could disrupt other
network activity.
USA Class A Computing Device
Information To User. Warning:
This equipment generates, uses, and can radiate radio-frequency energy. If it is not installed and used
as directed by this manual, it may cause interference
to radio communication. This equipment complies
with the limits for a Class A computing device, as
specified by FCC Rules, Part 15, Subpart J, which
are designed to provide reasonable protection against
such interference when this type of equipment is operated in a commercial environment. Operation of
this equipment in a residential area is likely to cause
interference. If it does, the user will be required to
eliminate the interference at the user’s expense.
NOTE: Objectionable interference to TV or radio
reception can occur if other devices are connected to
this device without the use of shielded interconnect
cables. FCC rules require the use of only shielded
Canada Warning:
“This digital apparatus does not exceed the Class A
limits for radio noise emissions set out in the Radio
Interference Regulations of the Canadian Department of Communications.” “Le present appareil numerique n’emet pas de bruits radioelectriques depassant les limites applicables aux appareils numeriques
(de les Class A) prescrites dans le Reglement sur le
brouillage radioelectrique edicte par le ministere des
Communications du Canada.”
Important Safety Information
To reduce the risk of electrical shock, do not expose
this product to rain or moisture. Keep liquids away
from the ventilation openings in the top and rear of
the unit. Do not shower or bathe with the unit.
The installation and servicing instructions in the
manual are for use by qualified personnel only. To
avoid Electric Shock, do not perform any servicing
other than that contained in the operating instructions
unless you are qualified to do so. Refer all servicing
to qualified personnel.
Electrical Warning
To prevent risk of electric shock: Disconnect power
cord before servicing.
This equipment is designed to be operated from a
power source that includes a third “grounding” connection in addition to the power leads. Do not defeat
this safety feature. In addition to creating a potentially hazardous situation, defeating this safety ground
will prevent the internal line noise filter from functioning.
Ventilation Warning
The Axia 8x8 node uses convection cooling. Do not
block the ventilation openings in the side or top of
the unit. Failure to allow proper ventilation could
damage the unit or create a fire hazard. Do not place
the unit on a carpet, bedding, or other materials that
could interfere with the rear and top panel ventilation openings.
Customer Service
We support you...
By Phone/Fax in the USA.
• Customer service is available from 9:30 AM to 6:00 PM USA Eastern Time, Monday through Friday at
+1 216.241.7225. Fax: +1 216.241.4103. The 24-hour Telos/Omnia/Axia support line is +1 216.622.0247.
By Phone/Fax in the Europe
• Service is available from Axia Europe in Germany at +49 81 61 42 467. Fax: +49 81 61 42 402.
By E-Mail.
• The address is [email protected]
Via World Wide Web.
• The Axia Web site has a variety of information which may be useful for product selection and support. The URL
We welcome feedback on any aspect of Axia products or this manual. In the past, many good ideas from users have
made their way into software revisions or new products. Please contact us with your comments.
The operation of the Axia node is determined largely by software. Periodic updates may become available - to
determine if this is the case check our web site. Contact us to determine if a newer release is more suitable to your
Our electronic newsletter has announcements of major software updates for existing products, as well as keeping
you up to date on the latest Axia, Telos, and Omnia product releases. You may subscribe to update notifications here:
Axia Audio
2101 Superior Ave. Cleveland, OH 44114 USA
+1 (216) 241-7225
[email protected]
Axia Europe
Johannisstraβe 6, 85354 Freising, Germany
+49 81 61 42 467
[email protected]
Copyright © 2009 by TLS Corporation. Published by Axia Audio. We reserve the right to make improvements or changes in the products described in this manual, which may affect the product specifications, or to revise the manual without notice. All rights reserved.
Version 2.5, May, 2009
Introduction • iii
Telos Systems, Axia Audio, Livewire, the Livewire Logo, the Axia logo, SmartSurface, Element, SmartQ, Omnia,
the Omnia logo, and the Telos logo, are trademarks of TLS Corporation. All other trademarks are the property of
their respective holders.
About This Manual
All versions, claims of compatibility, trademarks, etc.
of hardware and software products not made by Axia
mentioned in this manual or accompanying material
are informational only. Axia makes no endorsement
of any particular product for any purpose, nor claims
any responsibility for operation or accuracy.
This product is covered by a five year limited warranty, the full text of which is included in the rear
section of this manual.
You must contact Axia before returning any equipment for factory service. Axia will issue a Return
Authorization number, which must be written on the
exterior of your shipping container. Please do not
include cables or accessories unless specifically requested by the Technical Support Engineer at Axia.
Be sure to adequately insure your shipment for its
replacement value. Packages without proper authorization may be refused. US customers please contact
Axia technical support at +1 (216) 241-7225. All other customers should contact their local representative
to arrange for service.
If you have not done so, please review that material first. In it we explain the ideas that motivated
Livewire and how you can use and benefit from it,
as well as nitty-gritty details about wiring, connectors, and the like. Since Livewire is built on standard
networks, we also help you to understand general
network engineering so that you have the full background for Livewire’s fundamentals. After reading
Introduction to Livewire you will know what’s up
when you are speaking with gear vendors and the
network guys that are often hanging around radio
stations these days.
As always, we welcome your suggestions for improvement. Contact Axia Audio with your comments:
Axia Audio, a Telos Company
2101 Superior Avenue
Cleveland Ohio 44114 USA
Phone: +
E-Mail: [email protected]
Introduction • iv
We strongly recommend being near the unit when
you call, so our Support Engineers can verify information about your configuration and the conditions
under which the problem occurs. If the unit must
return to Axia, we will need your serial number, located on the rear panel.
This manual covers the details of the Axia 8x8 Microphone, Analog and 8x8 AES nodes. However it is
assumed in this document that you are familiar with
Livewire’s basic concepts, as outlined in the companion Introduction to Livewire: System Design
Reference & Primer manual.
Version 2.5, May, 2009
Table of Contents
Chapter Three: Advanced Programming . . . . . . . . 9
Accessing the Node’s Web Pages . . . . . . . . . . . 9
Customer Service . . . . . . . . . . . . . . . . . iii
The Router Selector Home Page . . . . . . . . . . 9
Warranty . . . . . . . . . . . . . . . . . . . . . . iv
Sources (Local Inputs) . . . . . . . . . . . . . . 9
Service . . . . . . . . . . . . . . . . . . . . . . . iv
Source Name and Channel . . . . . . . . . . . 9
About This Manual . . . . . . . . . . . . . . . . . iv
Shareable . . . . . . . . . . . . . . . . . . . . 10
. . .
. . . . .
A Note From The Founder/CEO of Telos
A Note From The President of Axia
Mode . . . . . . . . . . . . . . . . . . . . . . 10
Gain (dB) . . . . . . . . . . . . . . . . . . . . 10
AES Mode . . . . . . . . . . . . . . . . . . . . 10
Show Source Allocation Status . . . . . . . . . 11
Chapter One: Introducing the Router Selector Node . 1
Destinations (Local Outputs) . . . . . . . . . . . 11
Description . . . . . . . . . . . . . . . . . . . . . . 1
Destination Name . . . . . . . . . . . . . . . . 11
Front Panel Controls and Indicators . . . . . . . . . 1
Destination Channel . . . . . . . . . . . . . . 11
Fast Select Radio Buttons . . . . . . . . . . . . . 2
Destination Type . . . . . . . . . . . . . . . . 11
LCD Display and Control Knob . . . . . . . . . . 2
Output Load . . . . . . . . . . . . . . . . . . 12
Volume Control . . . . . . . . . . . . . . . . . 2
Output Gain . . . . . . . . . . . . . . . . . . 12
Sync . . . . . . . . . . . . . . . . . . . . . . . 2
Channel Filter . . . . . . . . . . . . . . . . . 12
Meters . . . . . . . . . . . . . . . . . . . . . 2
Meters . . . . . . . . . . . . . . . . . . . . . . . 12
Source Selection . . . . . . . . . . . . . . . . 2
Sources . . . . . . . . . . . . . . . . . . . . . 13
Rear Panel . . . . . . . . . . . . . . . . . . . . . . . 2
Destinations . . . . . . . . . . . . . . . . . . 13
AC (Mains) Power . . . . . . . . . . . . . . . . . 2
System Parameters . . . . . . . . . . . . . . . . . 13
Livewire (100 Base-T) Connector . . . . . . . . 2
IP Settings . . . . . . . . . . . . . . . . . . . 13
Input Connectors . . . . . . . . . . . . . . . . . 3
Host name . . . . . . . . . . . . . . . . . . . 13
Analog Line Input Characteristics . . . . . . . 3
Network address (IP Address) . . . . . . . . . 13
AES Input Characteristics . . . . . . . . . . . 3
Netmask (Subnet mask) . . . . . . . . . . . . 13
Output Connectors . . . . . . . . . . . . . . . . . 4
Gateway (Router) . . . . . . . . . . . . . . . . 13
Analog Output Characteristics . . . . . . . . . 4
Syslog Server (IP address) . . . . . . . . . . . 13
AES Input Characteristics . . . . . . . . . . . 4
Syslog severity level filter . . . . . . . . . . . . 13
User password . . . . . . . . . . . . . . . . . 14
Firmware version . . . . . . . . . . . . . . . . 14
Configuration & Testing . . . . . . . . . . . . . . . 5
Downloading new software . . . . . . . . . . . 14
Powering Up . . . . . . . . . . . . . . . . . . . . 5
Network & Quality of Service . . . . . . . . . . . 15
Restoring Defaults . . . . . . . . . . . . . . . . . 5
Livewire Clock Master . . . . . . . . . . . . . 15
Bench Testing . . . . . . . . . . . . . . . . . . . 5
Livewire Clock Mode . . . . . . . . . . . . . . 15
Basic Setup via the Front Panel . . . . . . . . . . . . 6
AES Synchronization and Clock . . . . . . . . 15
Accessing The System Menu . . . . . . . . . . . . 6
AES Sync Source . . . . . . . . . . . . . . . . 16
Programming The Node’s IP Configuration . . . . 6
AES Mute on Livewire Fail . . . . . . . . . . . 16
Checking The Node Software Version . . . . . . . 6
801.1p tagging, 802.1p VLAN ID, 802.1q Priority, &
Setting The Node’s Transmit Channel . . . . . . . 6
DSCP Class of Service . . . . . . . . . . . . . 16
Changing Main Output To Be Variable . . . . . . 7
Receive Buffer Size . . . . . . . . . . . . . . . 17
Operation . . . . . . . . . . . . . . . . . . . . . . . 7
Selecting A Stream For Playback . . . . . . . . . 7
Assigning Streams To Radio Buttons . . . . . . . 7
Adjusting Output Volume . . . . . . . . . . . . . 7
Version 2.5, May, 2009
Introduction • v
Saving Bank 1 Software . . . . . . . . . . . . 14
Chapter Two: Operation via the Node’s Front Panel . 5
Appendix A: Unbalanced Connections . . . . . . . . 19
Appendix B: Axia Nodes and Ethernet Radios . . . . 21
Appendix C: Troubleshooting . . . . . . . . . . . . . 23
Appendix D: Specifications and Warranty . . . . . . 25
Axia System Specifications . . . . . . . . . . . . . . 25
Introduction • vi
Axia Node Limited Warranty . . . . . . . . . . . . 27
Version 2.5, May, 2009
It’s been a tradition since Telos’ very first product, the
Telos 10 digital phone system, that I share a few words
with you at the beginning of each manual. So here goes.
In radio broadcast studios we’re still picking up the
pieces that have fallen out from the digital audio revolution. We’re not using cart machines anymore because
PCs are so clearly a better way to store and play audio.
We’re replacing our analog mixing consoles with digital ones and routing audio digitally. But we’re still using decades-old analog or primitive digital methods to
connect our gear. Livewire has been developed by Telos
to provide a modern PC and computer network-oriented
way to connect and distribute professional audio around
a broadcast studio facility.
Your question may be, “Why Telos? Don’t you guys
make phone stuff?” Yes, we certainly do. But we’ve always been attracted to new and better ways
to make things happen in radio facilities. And
we’ve always looked for opportunities to
make networks of all kinds work for broadcasters. When DSP was first possible, we used
it to fix the ages-old phone hybrid problem. It
was the first use of DSP in radio broadcasting.
When ISDN and MP3 first happened, we saw
the possibility to make a truly useful codec. We were the
first to license and use MP3 and the first to incorporate
ISDN into a codec. We were active in the early days of
internet audio, and the first to use MP3 on the internet.
Inventing and adapting new technologies for broadcast
is what we’ve always been about. And we’ve always
been marrying audio with networks. It’s been our passion right from the start. In our genes, if you will. As a
pioneer in broadcast digital audio and DSP, we’ve grown
an R&D team with a lot of creative guys who are openeyed to new ideas. So it’s actually quite natural that we
would be playing marriage broker to computer networks
and studio audio.
What you get from this is nearly as hot as a couple
on their wedding night: On one RJ-45, two-way multiple
audio channels, sophisticated control and data capability, and built-in computer compatibility. You can use
Livewire as a simple sound card replacement – an audio
interface connecting to a PC with an RJ-45 cable. But
add an Ethernet switch and more interfaces to build a
system with as many inputs and outputs as you want.
Audio may be routed directly from interface to interface or to other PCs, so you now have an audio routing
system that does everything a traditional “mainframe”
audio router does – but at a lot lower cost and with a lot
more capability. Add real-time mixing/processing engines and control surfaces and you have a modern studio
facility with many advantages over the old ways of doing
things. OK, maybe this is not as thrilling as a wedding
night – perhaps kissing your first lover is a better analogy. (By the way, and way off-topic, did you know that
the person you were kissing was 72.8% water?)
While we’re on the subject of history… you’ve probably been soldering XLRs for a long time, so you feel a
bit, shall we say, “attached” to them. We understand. But
no problem – you’ll be needing them for microphones
for a long while, so your withdrawal symptoms won’t be
serious. But your facility already has plenty
of Ethernet and plenty of computers, so you
probably already know your way around an
RJ-45 as well. It’s really not that strange to
imagine live audio flowing over computer networks, and there’s little question that you are
going to be seeing a lot of it in the coming
The 20th century was remarkable for its tremendous
innovation in machines of all kinds: power generators,
heating and air conditioning, cars, airplanes, factory automation, radio, TV, computers. At the dawn of the 21st,
it’s clear that the ongoing digitization and networking of
text, audio, and images will be a main technology story
for decades to come, and an exciting ride for those of us
fortunate to be in the thick of it.
Speaking of years, it has been a lot of them since I
wrote the Zephyr manual intro, and even more since the
Telos 10 – 20 years now. Amazing thing is, with all the
change around us, I’m still here and Telos is still growing
in new ways. As, no doubt, are you and your stations.
Version 2.5, May, 2009
Steve Church
Introduction • vii
A Note From The Founder/CEO of Telos
Introduction • viii
A Note From The President of Axia
20 years ago, I designed my first broadcast console
for PR&E. I look back on that time with great fondness;
we were building bullet-proof boards for the world’s
most prestigious broadcasters, making each new console
design bigger and fancier to accommodate a wider variety of source equipment and programming styles. The
console was the core of the studio; all other equipment
was on the periphery.
Then things changed: the PC found its way into broadcast audio delivery and production. At first, PC audio
applications were simple, used only by budget stations
to reduce operating expenses. But soon the applications
evolved and were embraced by larger stations. Slowly,
the PC was taking center stage in the radio studio.
Like many, I was captivated by the PC. Stations retired carts, phonographs, open-reel decks, cassettes —
even more modern digital equipment such
as DAT and CD players, replacing all with
PC apps. Client/server systems emerged and
entire facilities began using PCs to provide
most – or all – of their recorded audio. Yet
consoles continued to treat PCs as nothing
more than audio peripherals. I knew that we
console designers were going to have to rethink our designs to deal with computer-centric studios.
During this time, traditional broadcast console companies began producing digital versions. But early digital consoles were nearly identical in form and function
to their analog predecessors. It took a fresh look from a
European company outside broadcasting to merge two
products – audio routing switchers and broadcast consoles – into a central processing engine and attached
control surface. Eventually nearly every console and
routing switcher company followed suit, and a wide variety of digital “engines” and control surfaces flooded
the market.
But, advanced as these integrated systems were, they
still handled computer-based audio sources like their
analog ancestors. Sure, the router and console engine
were now integrated, but the most important studio element – the PC – was stuck in the past, interfaced with
100-year-old analog technology. The PC and console
couldn’t communicate in a meaningful way – strange,
considering that PCs everywhere were being networked,
fast becoming the world’s most popular and powerful
communication tool.
Then a group of Telos engineers developed a method
of using Ethernet to network real-time audio devices, allowing computers and consoles, controllers and peripherals to interact smoothly and intelligently. Powerful, flexible networks had finally come to our studios. As with
the transition from carts to computers, the benefits are
many and impressive. A few networked components can
replace routing switchers, consoles, processing peripherals, sound cards, distribution amps, selector switches
and myriad related devices.
This deceptively simple networked system costs a
fraction of other approaches, yet has capabilities surpassing anything else. The system is modular and can
be used to perform discrete functions in a traditional
environment. Concurrently, it easily scales to serve both
the humblest and the very largest of facilities.
Console, router, and computer work in harmony.
So, equipped with this new technology
and countless ideas, we launch Axia, the newest division of Telos. Axia is all about delivering innovative networked audio products to
future-minded broadcasters. On behalf of our
entire team, I welcome you as a charter client. Axia is
the culmination of nearly 40 man-years of some of the
most ambitious R&D ever applied to the radio industry.
And this is only the beginning. We have more products,
innovations, and partnerships in the pipeline.
You already know your Axia system is unlike anything else. So it shouldn’t be surprising that your new
system is loaded with new thinking, new approaches,
and new ideas in virtually every conceivable area. Some
concepts will challenge your traditional ideas of studio
audio systems, but we’re certain that once you have experienced the pleasures of the networked studio, you’ll
never want to go back. And now, for something completely different...
Version 2.5, May, 2009
Michael “Catfish” Dosch
Chapter One:
stereo Livewire stream, which becomes available to other devices on the Livewire network.
Introducing the Router
Selector Node
Similarly, the node’s stereo outputs can be assigned
to output a single stereo Livewire stream acquired from
the network.
This section will allow you to get to know the Router
Selector Node and describes the unit’s features, display,
and connectors.
The stream received can be easily selected from a
list of available Livewire streams using the front panel.
Eight frequently-used streams can be assigned to the
front panel “radio buttons” for instant access.
This manual is written with the assumption that you
have read the Introduction to Livewire – System Design
Guide & Primer document. While the Axia Livewire
technology is easy to use in powerful ways, it does represent a radical new way of thinking for broadcasters. That
document will serve to get your feet wet and to orient
you. We highly recommend you review that document
first, before building a Livewire audio system or reading
this manual.
A front panel headphone jack, LCD display, and control knob, round out the front panel. The control knob
defaults to the headphone volume control function.
In addition to being a handy audio selector for use
in the studio, the Router Selector node can be a handy
Livewire tester/monitor node, for use in the Technical
Operations Center or rack room.
The Axia Livewire Router Selector Node has one stereo input, and one stereo output. The user can feed audio
into either a balanced analog input or an AES input.
The Router Selector node has both AES and analog
balanced outputs. Both the AES and analog outputs are
active simultaneously; both outputs have the same audio
Therefore, each Router Selector Node can create 1
Front Panel Controls and Indicators
The Livewire Router Selector Node incorporates a
number of front panel controls to allow the operator to
quickly and confidently select Livewire network audio
sources for local playback. This section is an introduction to the node itself, for detailed operating information
Figure 1-1: Router Selector Node - Front Panel
Version 2.5 May, 2009
1: Introducing the Router Selector Node • 1
NOTE: Only approved and properly programmed
Ethernet switches incorporating the proper Multicast and QoS standards should be used. See for details.
Rear Panel
consult Chapter 2.
Fast Select Radio Buttons
The 8 buttons on the left side of the node permit instant stream access. These work identically to the channel select buttons present on most radios. The built-in
amber LED indicates that a particular button is active
and the associated stream is being played. A label area
above the buttons can be used to label the buttons, using
commonly available thermal printed pressure sensitive
labels (3/8 inch).
LCD Display and Control Knob
The built in LCD display and control knob permit
most functions of the Router Selector node to be controlled from the front panel.
1: Introducing the Router Selector Node • 2
Volume Control
The control knob defaults to a volume control function for the built-in headphone jack and, optionally, the
rear panel outputs. Turning the knob causes a volume
indicator bar to be displayed showing the volume level
setting. The volume indicator disappears three seconds
after one ceases to change the volume.
The sync status is displayed in the upper right corner
of the main LCD display. If sync packets are being received SYNC will begin to flash. SYNC will continue to
flash until the local clock has locked to the network master. Once the local PLL is locked, SYNC will illuminate
solidly. If the router selector is the network master then
MASTER will be displayed.
The top section of the default LCD display shows the
current Send (local input) and Receive (local output) levels for both left and right channels.
Source Selection
The control knob is also used to select the Livewire
stream to be played. Briefly, clicking (e.g. depressing) on
the control knob before rotating it puts it in stream selection mode. More on this later.
The rear panel of the Router Selector node is pictured
in Figure 1-3. The Router Selector node and RJ-45 connectors for inputs and outputs similar to the Analog and
AES nodes. For your convenience, some XLR connectors are also provided.
AC (Mains) Power
The AC receptacle connects mains power to the unit
with a standard IEC power cord. The power supply has a
“universal” AC input, accepting a range from 90 to 240
VAC, 50-60 Hz. A fuse is located inside on the power
supply circuit board
IMPORTANT! As with any piece of modern
electronic gear, it is advisable that precautions
be taken to prevent damage caused by power
surges. Standard line surge protectors can be
used to offer some degree of protection. It is
the user’s responsibility to ensure protection
adequate for their conditions is provided. This
equipment is designed to be operated from a
power source which includes a third “grounding”
connection in addition to the power leads. Do
not defeat this safety feature. In addition to creating a potentially hazardous situation, defeating this safety ground will prevent the internal
line noise filter from functioning.
Livewire (100 Base-T) Connector
This connector is for connection to another Livewire
node, or an approved Ethernet switch. It has two integral
LEDs. The green “Link” LED indicates the presence of
a live signal. The “Activity” LED indicates that Ethernet
packets are being sent or received over the link.
IMPORTANT NOTE: Axia nodes are intended for
use with an Ethernet Switch that supports multicast and QOS (Quality of Service). If you attempt
to use them with non-switched Ethernet hubs,
or a switch that is not enabled for multicast, you
will experience network congestion that could
disrupt other network activity. Should you wish to connect a node to a nonLivewire network for access to the web configuration interface, etc, you must first confirm that
streaming is disabled as described in Chapter 2.
Version 2.5, May, 2009
Input Connectors
IMPORTANT NOTE: Axia recommends using
balanced audio for analog audio connections.
If unbalanced sources are to be connected to
these inputs, we strongly recommend using a
balun (transformer) or balanced-to-unbalanced
buffer amplifier at the source device. Such
devices are readily available, for example the
­StudioHub “Match Jack”.
Function: Analog/AES
Left Channel Input + /AES +
Left Channel Input - /AES -
Right Channel Input +
Not Connected
Not Connected
Right Channel Input -
Not Connected
Not Connected
Function: Analog / AES
Balanced Input + / AES -
Balanced Input - / AES -
Analog Line Input Characteristics
• Connector – RJ-45 (Studio Hub+ compatible)
• Level (selectable)
• +4 dBu (+24 dBu clip point)
• +8 dBu (+26 dBu clip point)
• -10 dBV (+16 dBV clip point)
• Impedance – >/= 10 K_
AES Input Characteristics
• Connector – RJ-45 (Studio Hub+ compatible)
• Balanced 110 _ (XLR)
• AES3/EBU Compliant
For additional technical information please see the
Specifications section found at the end of this manual.
Figure 1-2: RJ-45 Pin Locations
Figure 1-3: Router Selector Node - Rear Panel
Version 2.5 May, 2009
1: Introducing the Router Selector Node • 3
The node will automatically switch between analog
and AES inputs; if a valid AES input signal is present,
this will be used, otherwise the analog input will be used.
Each analog stereo audio input is wired to an 8-position
/ 8-pin miniature modular jack (e.g. RJ-45 style) as well
as two XLR female connectors. The AES input is wired
to an 8-position / 8 – pin miniature modular jack as well
as an XLR female connector. The RJ-45 connector pin
functions are the same for both the AES and Analog and
are as follows:
Output Connectors
The stereo analog audio output is available on both
an 8-position / 8 pin miniature modular jack (e.g. RJ-45
style) and a pair of XLR male connectors.
The AES output is also available on both an RJ-45
connector and an XLR male connector. The RJ-45 connector pin functions are the same for both the AES and
These outputs use the same pin designations as the
inputs (see Figure 1-2 above).
Analog Output Characteristics
• Connector – RJ-45 (Studio Hub+ compatible)
• Level (selectable)
• +4 dBu (+24 dBu clip point)
• +8 dBu (+26 dBu clip point)
• -10 dBV (+16 dBV clip point)
• Impedance – < 50 _
1: Introducing the Router Selector Node • 4
AES Input Characteristics
• Connector – RJ-45 (Studio Hub+ compatible)
• Balanced 110 _ (XLR)
• AES3/EBU Compliant
What’s Next
That’s the “10,000-foot view” of the Router Selector Node. In Chapter 2, we'll learn how we can set up a
brand-new Node out-of-the-box, without ever touching
a PC! q
Version 2.5, May, 2009
Chapter Two:
Bench Testing
In this chapter, we’ll cover everything you need to
get a new Router Selector node up and running using
only the unit’s front panel controls.
Configuration & Testing
Although all Axia Audio Nodes have built-in web
servers for configuration and administration (whose use
is covered in Chapter 3), you can set up basic node functions using only the front-panel controls — handy for
those times when no PC is available. Note that many
users will prefer to give the node an IP address using
the front panel controls and then perform the rest of the
configuration from the node’s web pages.
Powering Up
When the Livewire Router Selector node is powered
on you should observe the following: The eight Radio
buttons should illuminate briefly, and after a short period
of time the LCD display will illuminate and display the
default screen (showing the meters and the stream currently selected).
Restoring Defaults
To restore the Livewire node to the default settings
follow the steps below:
1. Power the node OFF.
2. Depress and hold the control knob.
3. Power ON the unit while continuing to hold the control knob.
4. After about 8 seconds, you will see “Hold knob for
3 Seconds to reset factory defaults” displayed. If you
release the knob within 3 seconds, no changes will
occur. If you continue to hold the knob, the default
settings will be set and the screen will be go dark. At
this time release the knob.
1. Restore default settings on both of the Livewire nodes
to be connected. See “Restore Defaults”, above.
2. Set the TX channel as follows: Press the knob and
hold until System Menu is displayed. Rotate the
knob, if necessary, until Tx Channel is highlighted.
Click the knob 5 times until the last digit of the entry
to Tx Channel is highlighted. Rotate the knob clockwise until “1” is displayed (the entry for Tx Channel should now read 00001). Click the knob again to
confirm your entry.
3. Enable streaming on each unit as follows: Rotate
the knob till the word OFF is highlighted. Click the
knob once to select this item, and then rotate it until
SNAKE is displayed. Click the control knob to confirm your entry.
4. Rotate the control knob counter-clockwise until X is
highlighted. Click the control knob to return to the
default screen.
5. Connect the two units using a “Crossover 10/100
Base-T” Category 6 cable 100 meters maximum (see
Introduction to Livewire: System Design Reference
& Primer).
6. Click the knob to display the select streams display.
Highlight SRC1 and click to select the stream.
7. Audio may now be fed into the input, and will be received on the corresponding output of the other unit.
The receive (output) meters on each of the two units
should show the audio from the far end.
NOTE: The above “Livewire Snake” mode of operation is the only case where to streams may share the
same channel number. This is to minimize the steps
to configure such a snake.
Version 2.5 May, 2009
2: Operation Via the Node's Front Panel • 5
Operation via the Router
Node’s Front Panel
Two Livewire Router Selector nodes may be connected together in “Point to point” mode (e.g. Ethernet snake mode) to verify operation of the units. When
connected in this way the audio fed to “Audio Input” of
“node A” will be output on “Audio Output” of “node B”
whereas the audio on “Audio Input” of “node B” will be
output on “Audio Output” of “node A”. To connect two
units in “point to point” fashion follows these steps:
Basic Setup via the Front Panel
The main LCD screen is shown below:
Figure 2-1: Router Selector Node - Default Screen
Basic programming of the Livewire Router Selector
node can be accomplished using the front panel display
and the control knob. The node’s IP address, Transmit
channel, and other information can also be checked from
the front panel using the System Menu shown below.
“”, so unless the unit has previously been programmed, the screen will show “”.
2. Click the control knob once. The first digit of the
existing IP address will be highlighted. Rotate the
control knob to set the first digit and then click to
move to the next digit.
3. Continue until all digits of the IP address have been
entered. After entering the last digit clicking will
complete the entry process.
4. Make note of the IP address you have entered, so
that you can access the Node using a Web browser,
see Chapter 3.
5. The Subnet Mask (required) and Gateway IP address
(optional) are entered in the same way as the IP address.
6. To return to the main screen, rotate the control knob
anti-clockwise until [X] is displayed and then press.
Checking The Node Software Version
With the default meter screen displayed, press and
hold the control knob for 5 seconds. The software version will be displayed in the top left corner of the System
2: Operation Via the Node's Front Panel • 6
Setting The Node’s Transmit Channel
The Transmit Channel is the Livewire “channel number” assigned to the stream to be transmitted by this unit.
Figure 2-2: Router Selector - System Menu
Accessing The System Menu
To access the system menu, press and hold the control knob from the default (meter) menu. To return to the
main screen, rotate the control knob anti-clockwise until
[X] is displayed and then press.
Programming The Node’s IP Configuration
Each Livewire node must have a unique IP address.
The only exception is when two nodes are connected in
the point-to-point (snake) configuration.
To program the node’s IP address follow these steps:
1. Starting from the metering screen, press and hold
the control knob for 5 seconds. Once the System
Menu is displayed turn the knob clockwise until IP
Address is highlighted The default IP address is
If you have read the Introduction to Livewire: System Design Reference & Primer Manual, you will know
that each stream must have a unique channel number, so
don’t forget that now.
To program the node’s Transmit Channel follow
these steps:
1. Starting from the metering screen, press and hold
the control knob for 5 seconds. Once the System
Menu is displayed turn the knob clockwise until Tx
Channel is highlighted. The default Tx Channel
is “00000”, so unless the unit has previously been
programmed, the screen will show this value.
2. Click the control knob once. The first digit of the
existing Tx Channel will be highlighted. Rotate the
control knob to set the first digit and then click to
move to the next digit.
Version 2.5, May, 2009
Changing Main Output To Be Variable
By default, the line level output will be fixed and
only adjustable from the web page. This can be changed
using the front panel menu. Starting from the main
screen, press and hold the control knob for 5 seconds.
Once the System Menu is displayed turn the knob clockwise until VOL Phone is highlighted, then click to
select. Rotated the knob to select Ph&Out, then click
to select. Navigate to the [X] to exit the menu. Now
the volume control on the front panel will control both
the headphones and the line level outputs.
select form the following options:
• Name – clicking this will cause the streams-list to
be sorted by stream name.
• Chan – clicking this will cause the streams-list to be
sorted by stream Livewire channel number.
• Exit – clicking this will return you to the default
menu without selecting a new source.
Figure 2-3: Router Selector - Source List
Assigning Streams To Radio Buttons
Operation of the Router Selector from the front panel
is quite simple. Streams can be selected, assigned to an
instant access Radio Button if desired, and the headphone/output volume may be adjusted.
Once a stream has been selected and is playing (e.g.
by using the control knob and LCD display, see above),
it can be assigned to any radio button by pressing and
holding that button. After 5 seconds, the button’s builtin lamp will blink indicating the new setting has been
Selecting A Stream For Playback
From the default menu screen click the control knob
once. The source selection screen, shown below, will be
Adjusting Output Volume
Whenever the unit is at the default screen (the meters will be shown at the top of the screen) the headphone volume may be adjusted by rotating the control
knob. By default, this adjusts the front-panel headphone
levels only; the line level outputs on the rear panel are
not affected unless the front panel level control has been
configured for Ph&Out (headphones and output) as described in the previous Basic Setup section.
What’s Next
Figure 2-3: Router Selector - Source
Rotate the control knob to highlight the desired
Livewire stream and click to select it.
Streams can be displayed in order by their Livewire
channel number, or by their Livewire name. To change
the sort criteria rotate the knob clockwise until you reach
the end of the source list. You can now highlight and
You’ve learned the basic front-panel operation of
Axia Audio Router Selector Node. In Chapter 3, we'll
take a tour of the Router Selector Node Web Interface,
where advanced options can be set to customize your
Node. q
Version 2.5 May, 2009
2: Operation Via the Node's Front Panel • 7
3. Continue until all digits of the Tx Channel have been
set. After entering the last digit clicking will complete the entry process.
In our youth we
never dreamed that, one day, streams
2: Operation Via the Node's Front Panel • 8
might not have water.
Version 2.5, May, 2009
Chapter Three:
Advanced Programming
This chapter will walk you through the use of the
Router Selector Node’s built in web pages to
configure advanced features quickly, easily. —
and remotely!
When you click on any link, you’ll be prompted for
a login and password. The default user name for all Axia
nodes is “user”. Other valid default user names (for
nodes running current software) are “USER”, “axia”
and “AXIA”. Leave the password field blank and click
OK. Once you have successfully logged in, you may
access any of the node’s web pages.
Accessing the Node’s Web Pages
A few things to remember: We assume you
know the basics of network architecture, but we
must mention that the first three numbers of the
IP address of the computer you are using will normally match those of the Node you are attempting to configure; i.e., If they
don’t, the gear won’t be able to communicate
and you’ll just get frustrated. Microsoft Internet Explorer 5 and later, and Mozilla Firefox 1.0 and later have been tested with
Axia Audio Nodes. Other browsers may work,
however they have not been tested.
Figure 3-1: Router Selector Node - Home Page
Sources (Local Inputs)
This is where you configure the local input to this
node, and assign a Livewire channels and parameters to
that source. Once configuration is complete (or at any
time in the configuration process) click on Apply to save
your changes to the node.
Source Name and Channel
As described in the Introduction to Livewire; System Design Reference & Primer manual, each Livewire
stream must be assigned a unique channel number. The
Your browser must have the Java runtime
library installed and enabled, and must
allow “pop up” windows and display our
meters. To obtain the Java runtime, visit .
The Router Selector Home Page
The home page simply acts as a start page, to
allow access to each of the configuration pages.
We describe each of those pages in detail.
Figure 3-2: Router Selector Node - Sources Page
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3: Advanced Programming • 9
All of the node’s parameters may be configured using the node’s web configuration pages.
To access the web server from a computer, the
computer and node must be connected to the
same LAN (or, the computer and Node can be
connected using a “crossover 10/100 BaseT” Ethernet cable). To connect, open your web
browser and enter the IP address of the node to be configured. Your browser should now display the node’s
home page, with links to the various functions available
Tip: Standard (Slow) streams conserve network
bandwidth and are a better choice for delivering
audio to computers for recording and playback.
channel number must be a number between 1 and 32767.
Livewire names may contain any printable character or spaces and can be up to 24 characters long (when
entering names excess characters will be truncated to 24
characters). Note however, that the displays on some Audio Nodes can display only 10 or 16 characters. In this
case the left-most characters will be displayed, so keep
this in mind.
You will want to develop a logical naming plan
for your facility. For example you may wish to
include the studio or rack name as part of your
names to make life simpler when identifying
sources in the future. We give some examples
in the Introduction to Livewire manual.
This is a feature provided for backward compatibility with SmartSurface consoles. This interlock prevents
multiple consoles from sending simultaneous backfeeds
or logic commands to a single source. A red lock indicates a console has locked the source and it is available
to other consoles in listen-only mode.
Gain (dB)
This allows you to change the input gain in the digital domain. Care must be taken to ensure peak levels do
not exceed 0 dBfs to prevent clipping. A gain range of up
to +/- 12 dB may be selected in steps of 0.1 dB. Enter a
value and click apply to make the change.
The analog line inputs clip point remains at +24
dBu so this level must not be exceeded. The
rare device with a clip point in excess of +24
dBu will require an external pad.
The Gain setting may be use to adjust for differing peak output levels between different “+4 nominal”
equipment, or it can be used to accommodate analog
sources that are below +4 nominal levels.
The default setting of 0 dB accommodates input levels at nominal levels of +4 dBu with a clip
point of 24 dBu (e.g. 20 dB headroom). When
feeding the node’s inputs from a “+4 nominal”
device that clips at some lower level (for example +18 dBu, e.g. 14 dB headroom), you can adjust the gain (by 6 dB in our example). to match
this device’s clip point to the node’s 0 dBfs point.
This adjustment can also be used in cases where a
low-level signal source must be used. Again you
should use the rated clip point of the source device
to determine the closest setting. Simply add gain to
bring this rated clip point up to +24 dBu.
3: Advanced Programming • 10
Set all Node “Sharable” fields to “No” if you are
using Element consoles running v2.0 or later software
since the Element handles source sharing.
Sources for a Router Selector node can be Standard
Stereo or Live Stereo. They can also be Enabled, or Disabled (we recommend leaving unused I/O Disabled to
keep from generating empty audio streams).
Standard Stereo – Generates a stereo source.
This type is generally used for CD players, computers, and other common sources.
Live Stereo – Generates a low latency stereo
source. The type is generally used for microphones, phones, air monitors and other monitored “live” sources.
Disabled – Audio source is disabled, no Livewire
source stream is generated and no network bandwidth used.
While we don’t usually recommend setting levels
“by eye,” if you choose to do so, you can view the Source
levels and adjust the Gain setting from the Meters page,
see below.
AES Mode
There are two possible options for the setting:
• Asynchronous – this is the usual setting and enables
sample rate conversion. Any valid AES source can
be used in this mode without concerns about dropouts due to mismatched clocks.
Version 2.5, May, 2009
Synchronous – this setting can be used if the device
transmitting the AES signal is synchronized to the
Livewire network. For example, if the device synchronized its outputs to its input, and the input were
fed from an Axia AES node or, if the device had a
Sync input fed from an Axia AES node. Enabling
the Synchronous mode turns off sample rate conversion thereby reducing latency. This is perfect for
use with digital microphones or for “purist” applications.
Show Source Allocation Status
Click on this link to display the console and fader to
which the source(s) on this node are assigned. This is
helpful when tracking down a source that’s reported as
being “locked” (non-sharable).
Figure 3-3: Source Allocation Pop-Up
Destinations (Local Outputs)
The page permits entering information related to
this node’s local output. Node outputs are always destinations to which Livewire audio streams are delivered.
You can name these outputs and select the stream to
be delivered to each output. The Destinations screen for the Router Selector node is
shown in Figure 3-4.
to be output is not yet available on the network, you can
manually enter the channel number here. In the usual
case you can click on the choose channel button to the
right of this field, and a Select Source screen will be displayed similar to the one shown in Figure 3-5.
You can now click on the name or channel number of
the desired source to assign it to this Destination (local
Destination Type
There are two choices for this setting. Let’s take a
look at each one.
From Source: Stereo output of the same type,
Live or Standard, as the source.
• To Source: Backfeed to a bidirectional audio
source such as a phone or codec.
We have used the term Backfeed in our discussion
above. Let us regress for a moment and review backfeeds. You will recall from the Introduction to Livewire;
System Design Reference & Primer manual that
Livewire permits special bidirectional streams for use
with cases where a source and destination are associated,
such as a codec or phone hybrid. The return feed to such
devices is usually a mix-minus (backfeed) generated by
a mix engine fed back to the device that is the primary
audio source (and usually the name of the stream in
question). In effect you have thus created a bidirectional
Livewire channel with a single channel number.
Destination Name
This is the name used to identify this
destination (local output) within the
Livewire network. While these names are
optional, we encourage you use them to
describe what is wired to the node output.
Destination Channel
These are the Livewire channels to be
routed to each local output. If the channel
Figure 3-4: Router Selector Node - Destinations Page
Version 2.5 May, 2009
3: Advanced Programming • 11
if necessary. The range of the output gain is +/- 12 dB.
This adjustment is commonly used for connections to
consumer-grade or other equipment that may have unusual signal levels.
Figure 3-5: Node - Destinations Pop-up.
3: Advanced Programming • 12
What does this all mean in practice? If the destination is a codec or hybrid you’ll set the Destination Type
to To Source and use the same Channel number as the
stream representing the Codec or Hybrids output (the
caller or far end codec audio).
Output Load
This setting has two options. The usual selection is
Hi-Z and is used when the node’s outputs are fed to High
impedance destination devices.
If the node is feeding 600 Ohm
inputs (very rare these days)
the 600 ohm option should be
selected. This boosts the node’s
output level by ~1 dB to maintain true +4 levels into 600 Ohm
equipment to ensure unity gain.
The clip point remains at 24 dB.
Output Gain
An output gain control is
provided to make adjustments
that may be required if external equipment needs a level
other than +4dB. Signal level
throughout an Axia system
should be +4dB since we know
you will have normalized these
levels by adjusting source gain
Channel Filter
Use this to reduce or filter what sources can be
viewed from the front panel but not the web page. Only
the channel numbers listed are available and either a
range or a comma delimited list can be used. Any channels that are the list must also be included in the range.
The list is not in addition to the range - the list is the
only ones that will be displayed. Example: If the channel
range is set to 1-100 and the channel list includes only
90, then only source 90 will be displayed. If the range is
set from 1-32767 and the channel list is 1-100, 125, then
all channels from 1 to 100 and 125 will be displayed. If
no filtering is desired, set the range to 1 – 32767 and
leave the list blank. Click apply to make the change
The Meters screen, shown in Figure 3-6 , is a metering screen that shows the audio level of the local source
(local input) and destination (local output) for the node.
The screen is divided into two sections, with the input
Figure 3-6: Router Selector Node - Meters Page
Version 2.5, May, 2009
on the left and the output on the right. Each section has a
display, with a left and right meter for each input or output. Note that the levels shown are in the digital domain,
and are therefore calibrated in dBfs. The color-coding of
the meters is somewhat arbitrary; the meters turn red approximately 9 dB before the clip point (e.g. 9 dB below
digital full scale) but this does not represent an overload
NOTE: If the meters are not displayed, Java
needs to be installed on the computer. Java is a
free download and may be obtained from www.
While we recommend setting the gain setting for inputs based on the peak output clip point of the source
equipment (see Source Page, above), you can use the
meter screen to tweak input Gain settings “by eye” if
desired. Use the large arrows to adjust the level by 1 dB,
use the small arrows to adjust the level by .1 dB.
This meter represents the Livewire stream being
output from this node. These meters are primarily for
confidence monitoring. As with the front panel, the lower-most segment indicates that the designated Livewire
stream is present, even if no audio is currently playing.
Use the large arrows to adjust the level by 1 dB, use the
small arrows to adjust the level by .1 dB.
unique IP address.
Host name
The name is a 12-character, alphanumeric name for
this Node that may include hyphens but NOT spaces;
those will be converted to hyphens. This name is used
to identify the node on the network. You may wish to
include the location of the node (studio or rack) in the
name for ease of reference.
Network address (IP Address)
The IP address of the node. Each Audio Node must
have a unique IP address. The only exception is when
two nodes are connected in the point-to-point (snake)
configuration. Normally this would be set using the front
panel, but it can be checked or changed from this web
page, if needed.
NOTE: If you change the IP address you will lose
your browser connection when you click Apply,
and will need to reconnect using the new IP address.
Netmask (Subnet mask)
This is the IP subnet mask of the local unit. The typical setting that is suitable for most cases is .
Gateway (Router)
This may be the IP address of the IP Router connecting the local IP network with some other IP network.
This is not used or required in most cases.
The System Parameters page, shown in Figure 3-7,
allows configuring the node’s IP address and related settings. It also permits choosing between a primary and
secondary bank of software and to download new software into the secondary bank. The currently running
software version is displayed here as well. You must
click the Apply button for changes to take place.
IP Settings
These are the usual IP-related settings (see Introduction to Livewire; System Design Reference & Primer
for an overview and some good references to additional
information). Your network administrator should be able
to provide the needed values. Each unit must have a
Syslog Server (IP address)
Various services generate syslog (RFC 3164) messages, which can be forwarded to a remote syslog daemon. The remote syslog daemon IP address can be entered on the System WEB page.
Syslog severity level filter
You can customize syslog logging by choosing log
detail level:
• Emergency: system is unusable
• Alert: action must be taken immediately
• Critical: critical condition
• Error: error conditions
• Warning: warning conditions
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3: Advanced Programming • 13
System Parameters
Notice: normal but significant condition
Informational: informational
Debug: debug-level message
Only messages with a severity higher than that specified
by the filter will be forwarded to the remote logger.
User password
This is the password required
to connect to the unit. It must be
at least 5 characters long and may
be as long as 8 characters. Only
alphanumeric characters are permitted. To change the password
you must enter the new and old
passwords and then click Apply.
NOTE: If you changed the IP or
Firmware settings the unit will
reboot. If you have only entered
a new password the unit will not
Figure 3-7: Router Selector Node - System Page
the desired bank and then click on Apply.
IMPORTANT! The node will reboot after you click
Apply if you change the software version. This
will result in loss of audio locally, and at any unit
using the local sources of this node.
IMPORTANT! Changing device passwords can
have serious implications on the operation of
you Pathfinder software. Consult the Pathfinder
manual before making changes to your pass-
3: Advanced Programming • 14
word scheme.
When logging into the node any of the following
“user names” may be used: user, USER, axia, Axia, AXIA.
The default password is blank for any of the above users.
Firmware version
An Axia node has two internal memory “banks”.
Each bank contains room for a complete version of operating software. This approach allows a software update
to be completed and checked without danger of making
the unit inoperable if the download were to be incomplete or corrupted. It also provides and easy way to try a
new software version and still return to the old version.
The software version in each bank is displayed here.
To change banks simply click in the “radio button” for
Saving Bank 1 Software
Software is always downloaded to bank 1 (the secondary bank). Downloading new software to your node
(see below) will overwrite any software currently in this
bank. If you wish to save the software currently in bank
1, you can save it by moving it to bank 0 as follows:
Click on Commit this version to Bank 0 box (see
Figure 3-8).
Click on Apply.
Downloading new software
A new version of software can be downloaded into
bank 1 as follows:
1. Go to the Axia web site and download the desired software update
Version 2.5, May, 2009
IMPORTANT! The node will reboot after you click
Apply when changing between software versions. This will result in loss of audio locally, and
at any unit using the local sources.
Network & Quality of Service
The Router Selector Node node QoS page is shown
in Figure 3-8. The settings on this screen are advanced
settings, and generally the default settings should be
Livewire Clock Master
Livewire’s clocking system is automatic and largely
transparent to end users. By default, the Axia hardware
node with the lowest Ethernet IP address will be the
clock “master”. The system will automatically and transparently switch to a new unit as clock master if needed.
We do however, permit you to force clock mastership to
a particular node or set certain nodes as “preferred” for
clock mastership while maintaining automatic operation.
For example you may prefer to have nodes that are on
UPS power be preferred clock masters. Note that in the
automatic modes clock mastership is changed only when
the current master becomes unavailable (adding a new
node will not change clock mastership regardless of the
new node’s setting). The only exception is the 7 (Always
Master) setting.
You have the following choices for this setting:
0 (always slave) “STL” – Unit will never be master
and is only used with Ethernet radios.
0 (always slave) – This unit will never be used as
clock master.
3 (default) – The usual setting.
4 (Secondary Master) – Nodes with this setting will
be used as clock masters before those set to 3.
5 (Primary Master) – Nodes set to this setting will
be used as clock masters before those set to 4.
7 (Always Master) – This forces a particular node
to be clock master, even if another node is currently
clock master. If this mode becomes available then
the usual prioritization is used.
7 (Always Master) “STL Snake” – This forces a
particular node to be clock master. Use only when
two nodes are connected back to back without an
Ethernet Switch.
IMPORTANT! Only a single node on a Livewire
network should ever be set to 7 (Always Master).
For this reason we do not recommend using that
Livewire Clock Mode
Provided for compatibility with older revisions:
• IP low rate (default) – recommended setting
• Ethernet – compatible with 1.x firmware
• IP High rate – compatible with 2.1.x master
AES Synchronization and Clock
These settings determine two factors. The Livewire
Clock Master Priority setting determines the clock mastership options as described above for the Router Selector Node.
The AES functions of the node also permit additional synchronization options to lock the node to an AES
source, as discussed below.
Version 2.5 May, 2009
3: Advanced Programming • 15
for your node to your computer (this should be the
computer that you will use to access the node’s web
page). Your local computer operating system should
display a prompt to permit you to choose where you
wish to locate the downloaded file. You can choose
any convenient location, just be sure to note the drive
and location where the file is to be saved.
2. Open a web browser and connect to the node to be
updated. Enter the complete path and file name for
the software file (e.g. the file downloaded from the
Axia site), or click on the Browse button to locate the
file. Once the proper path and filename are displayed,
click on Apply to download the file.
3. A successful download will be indicated by the new
version being displayed in the Bank 1 field. If the
download is unsuccessful the field for Bank 1 will
be blank.
4. To run the new software click on Bank 1 radio button and then click on Apply to reboot the node. It
will take approximately 20-30 seconds for the node
to reboot.
Livewire Master clock.
AES Mute on Livewire Fail
This option may be set to Yes
or No. The function is rather selfexplanatory. When set to Yes, the
AES audio output will be muted
should there be a Livewire sync
failure or loss of Livewire stream.
Figure 3-8: Router Selector Node - QoS Page
3: Advanced Programming • 16
AES Sync Source
There are three settings for AES Sync Source:
Livewire 48kHz
• AES Sync
• AES Input
801.1p tagging, 802.1p VLAN
ID, 802.1q Priority, & DSCP
Class of Service
802.1p tagging is necessary
within the Livewire network to
mark high-priority audio packets
. This information is used by the
Ethernet switches in the packet
scheduling and queuing mechanism. It provides low-jitter packet
forwarding of Livewire clock and
low-latency audio streams.
On the other hand, Standard streams don’t need tagging, because they are not low-latency. By default, standard streams are marked with Type of Service (DSCP
code points) information in the IP header which can be
used by L3 switches to provide better service to our audio streams than to best effort IP traffic.
If AES sync source is set to Livewire 48 kHz then
the system will simply use the unit’s internal clock
source if and when it becomes clock master. This is the
most common setting for a Router Selector node
Setting the Sync Source to AES Sync will use the
rear panel RJ-45 connector that is labelled AES IN/
SYNC as a clock reference for the local Router Selector
Setting the Sync Source to AES Source will use the
rear panel XLR connector that is labelled AES IN (the
AES audio input) as a clock reference.
Note that unlike an Axia 8x8 AES node, a Router Selector node cannot function as an AES sync source for
There is an option to enable L2 802.1p tagging on
standard streams, and this may be used with switches
which do not use the DSCP information included in the
TOS field of the IP header. We do not enable this tagging
by default, because it wouldn’t work in cross-over Ethernet connection to PCs; most network cards do not accept
802.1p frames by default.
You should not need to change these default settings
unless you are building a system which is not based on
our recommendations.
In Axia nodes, the VLAN ID setting is read-only. It
is always 0 and cannot be changed. As a result Livewire
audio always uses the native VLAN assigned to the port
Version 2.5, May, 2009
of the switch.
“DSCP Class of Service” is a standard describing the
tagging of IP frames with service information. Network
equipment can be set up to provide different forwarding delay and drop precedence depending on the service
information. Our defaults are compatible with most Ethernet equipment defaults for class of service Livewire
requires; you should not need to change them unless instructed by Axia Support.
3: Advanced Programming • 17
Receive Buffer Size
Determines the amount of buffering in the receiver
when receiving Standard Streams. Buffering is needed to
compensate for jitter in network packet delivery. Usually
the biggest source of the jitter is a source PC. Real-time
performance varies widely from one system to another;
some computers can provide very low timing irregularities and allow the receive buffer to be reduced to achieve
lower audio delay. The default setting is 100 ms.
Version 2.5 May, 2009
Isn’t it time you
finally threw out all of
3: Advanced Programming • 18
those dusty ScotchCarts?
Version 2.5, May, 2009
Unbalanced Connections
We’ve told you, both earlier in this manual, and in
Introduction to Livewire; System Design Reference
& Primer, that Axia recommends balanced audio connections when connecting analog source and destination gear to the inputs and outputs, respectively, of Axia
nodes. Not only do we recommend this for the usual
reasons, but because inter-channel crosstalk between the
left and right channels of unbalanced signals sharing the
same Cat. 5 cable is a possibility. As we’ve mentioned
before, we recommend converting between balanced
and unbalanced at the unbalanced device and then using
the standard Cat. 5 connection from there to the Axia
There are a number of active balanced-to-unbalanced
and unbalanced-to-balanced adaptors commercially
available at a reasonable cost (see
for a pair of units that will easily plug and play with our
gear). We’ll suggest one more time that this approach
is the way to go, and that using unbalanced cable runs
will compromise the performance of your state of the
art Axia audio network. However, if you are in a bind, or
otherwise determined to do so, here is how we recommend connecting Axia nodes to unbalanced equipment:
Unbalanced Destinations
To feed audio to an unbalanced destination from the
8x8 Analog node you must use a separate cable for the
left and right signals, and you will need a shielded RJ-45
plug so you can terminate the shield of the audio cables.
RJ-45 Pin 1 will feed the Left signal with the signal common (e.g. cable shield) connected to the RJ-45 shield.
Pin 3 will feed the Right signal with the signal common
(e.g. cable shield) connected to the RJ-45 shield.
An external pad may be required if the destination
equipment’s inputs cannot accept signals with peak levels of +24 dBu.
the shield. Doing so will not harm the node, however doing so will activate a feature that will increase the output
level by 6 dB, which is generally not desirable.
Feeding unbalanced device inputs from Axia 8x8
analog node outputs.
Unbalanced Sources
To feed an unbalanced signal from a source into the
inputs of the analog 8x8 node you must use a separate
cable for the left and right signals. We generally prefer
the method where the unbalanced signal is presented
across the differential balanced inputs of the node. The
handling of the shield will depend on the equipment and
grounding practices used.
If both pieces of equipment are grounded to a facility
grounding system then the shield may be left open at one
end (or both ends), as follows.
Axia node’s analog inputs fed from an unbalanced
source where both pieces of equipment are tied to a
facility ground.
Generally the unused output pin should not be tied to
Version 2.5 May, 2009
Appendix A: Unbalanced Connections • 19
Appendix A:
Alternatively, if both pieces of equipment are not
both tied to a common facility ground, both sides of the
shield must be connected. In this case the “-“ side of the
nodes inputs are tied to the shield of the RJ-45 plug as
Appendix A: Unbalanced Connections • 20
Axia node’s inputs fed from a floating source, with no
facility ground in common with the Axia node.
Version 2.5, May, 2009
Axia Nodes and Ethernet Radios
This tech note applies to Node Software v2.3.2a and
There are several changes and additions to Axia Audio Nodes software beginning with v2.3.2a designed to
simplify the operation of STLs and audio snakes using
Axia nodes in conjunction with Ethernet Radios.
These additions include:
STL Slave and STL Snake modes on Clock
Master Priority options
IP Low Rate is now set as the default receive
Clock mode in the LW Clock Mode options
field. (Note that this setting only defines the RECEIVE type of stream. It does not change the
clock stream type when the node is acting as the
Master Clock. We recommend that you do not
change this setting.)
A Standard Stream Buffering option, which is
set to 100ms as default. (Note that this setting
should not be adjusted unless advised otherwise
by Axia Technical Support.)
A “Master/Sync” confidence tally is added to the
Router Selector Node display.
Note that the setup options described below require
that Node Software v2.3.2a or higher must be installed
to work correctly.
Using two nodes back to back without an Ethernet
In this scenario, the clock sync mode will set the
Clock Rate to a Low Rate sync packet regardless of the
Livewire Clock Mode setting. This enables a more stable SYNC mode, eliminating the need for an Ethernet
switch between the nodes handling QOS of the clock
sync signal.
Navigate to the “QOS” web pages of the Audio
Nodes you’ll be using. Determine which one will be the
master and which the slave, and set the new “STL Snake”
and “STL Slave” clock priority modes to the appropriate
Typically, you will set the Clock Master Priority option on the Node located in the studio to “7 (Always
Master) STL Snake”. The Node on the remote end of the
link should be set to “0 - (Always Slave) STL”.
All stream types must be set to Standard streams.
Leave Standard Stream buffering at 100ms (the default
Connecting a “remote” Audio Node to an existing
Axia network using Ethernet Radio
If you are using Studio Engines and/or existing nodes
connected to an Ethernet switch, then these instructions
assume that you have a current Livewire Network and
are adding a node at a remote location connected via an
IP radio. You must maintain the high rate Master clock
sync packets for these devices in order for all nodes to
sync properly. This is especially important for the wellbeing of the Axia Studio Mix Engines.
In this case, you will need to have at least ONE Audio Node on the main Livewire network designated as
the MASTER CLOCK and running version 2.3.2a software. It should be set to a higher priority than all other
nodes running earlier software versions. We recommend
choosing “7 - (Always Master)”. Do not select “7 – (Always Master) STL Snake” for this application.
The remote node at the receive end of the Ethernet
radio should likewise be running v2.3.2a or newer software. Its clock setting should be “0 - (Always Slave)
Deep Tech: A node running version 2.2.0, when op-
Version 2.5 May, 2009
Appendix B: Axia Nodes and Ethernet Radios • 21
Appendix B:
erating as the current Clock Master, will generate two
clock streams: a High rate and a Low rate clock sync.
Nodes running version 2.1.x and earlier do not have this
dual clock feature and require the High rate sync to operate as well.
Streams sent to the “remote” node should all be
STANDARD streams. Leave Standard Stream buffering
at 100ms (the default setting) on the receiving node.
Appendix B: Axia Nodes and Ethernet Radios • 22
IP Radio Settings and Recommendations
Settings on your Ethernet radios will have to be
tweaked as needed. Unfortunately, due to the large number of Ethernet radios on the market, at the rate at which
these products change, we are unable to make specific
recommendations on which radio to choose, or their exact optimal settings.
Some Quality of Service options may assist or hinder the operation of the radio for multicast UDP data
packets. This may involve turning ON or OFF some or
all the “smarts” within the radio. User experience will
differ from model to model. We suggest that you contact
your radio’s manufacturer for additional support on the
operation of the radios in this mode. For the purposes of
passing Livewire streams reliably, we desire that the IP
radios behave as much as possible like a simple piece of
CAT6 cable, with minimal latency.
Questions on the operation of the Axia Audio Nodes
can be emailed to Axia support at [email protected]
Version 2.5, May, 2009
Appendix C:
Here are some basic troubleshooting tips that might prove useful. Don’t forget that the Introduction to Livewire;
System Design Reference & Primer should be your companion and has many useful tips. Our on-line forum also
contains tips from users as well as our own Tech Tips section fount at
Possible Solution
SYNC indicator on front This indicates that the node is not able to lock onto a clock source. This is because
panel is not displayed.
there is no master clock or a network problem (not properly configured network
• check Ethernet switch configuration
• verify that there is a node assigned a “clock priority” value greater than 0 on
the network
Audio from a node sounds • This indicates a problem with the source packet. This can be due to two debad. The meters on the web
vices producing data on the same multicast channel (source channel number)
page show audio. The meters
or also could be due to network problems. If the data is passing through a
on the front display are not
trunk cable that is heavily used (a lot of data, over 50%) data could be getting
dropped. Note that the meters on the front display will show activity if the data
is valid. The meters on the web page may show activity, but this does not show
valid data is actually being received.
• Sometimes, on a small network, you may get output from a node but it has
drop-outs and is just not “quite right”. Check the clock (master/sync) to make
sure your node is getting or generating Livewire clock. See item on sync above.
Need to reset node to factory 1. Power the node OFF.
2. Depress and hold the front panel control knob.
3. Power ON the unit while continuing to hold the control knob.
4. After about 8 seconds will see the word “RESET 3 S” displayed. If you release the control knob within 3 seconds no changes will occur. If you continue
to hold the control knob, in 3 seconds the default settings will be set and “REBOOT” will be displayed. At this time release the control knob.
Version 2.5 May, 2009
Appendix C: Troubleshooting • 23
No Meters are displayed on This page require Java be installed on the PC being used to display the node’s web
the “meters” http page.
pages. Java is a free download from
World, now digital
Analog memories fade.
Appendix C: Troubleshooting • 24
The future beckons!
Version 2.5, May, 2009
Appendix D:
Specifications and Warranty
Axia System Specifications
Microphone Preamplifiers
Source Impedance: 150 ohms
Input Impedance: 4 k ohms minimum, balanced
Nominal Level Range: Adjustable, -75 dBu to -20 dBu
Input Headroom: >20 dB above nominal input
Output Level: +4 dBu, nominal
Analog Line Inputs
• Input Impedance: >40 k ohms, balanced
• Nominal Level Range: Selectable, +4 dBu or -10dBv
• Input Headroom: 20 dB above nominal input
Analog Line Outputs
Output Source Impedance: <50 ohms balanced
Output Load Impedance: 600 ohms, minimum
Nominal Output Level: +4 dBu
Maximum Output Level: +24 dBu
Reference Level: +4 dBu (-20 dB FSD)
Impedance: 110 Ohm, balanced (XLR)
Signal Format: AES-3 (AES/EBU)
AES-3 Input Compliance: 24-bit with selectable sample rate conversion, 32 kHz to 96kHz input sample rate
AES-3 Output Compliance: 24-bit
Digital Reference: Internal (network timebase) or external reference 48 kHz, +/- 2 ppm
Internal Sampling Rate: 48 kHz
Output Sample Rate: 44.1 kHz or 48 kHz
A/D Conversions: 24-bit, Delta-Sigma, 256x oversampling
D/A Conversions: 24-bit, Delta-Sigma, 256x oversampling
Latency <3 ms, mic in to monitor out, including network and processor loop
Frequency Response
• Any input to any output: +0.5 / -0.5 dB, 20 Hz to 20 kHz
Dynamic Range
• Analog Input to Analog Output: 102 dB referenced to 0 dBFS, 105 dB “A” weighted to 0 dBFS
• Analog Input to Digital Output: 105 dB referenced to 0 dBFS
• Digital Input to Analog Output: 103 dB referenced to 0 dBFS, 106 dB “A” weighted
Version 2.5 May, 2009
Appendic D: Specifications & Warranty • 25
Digital Audio Inputs and Outputs
• Digital Input to Digital Output: 138 dB
Equivalent Input Noise
• Microphone Preamp: -128 dBu, 150 ohm source, reference -50 dBu input level
Total Harmonic Distortion + Noise
Mic Pre Input to Analog Line Output: <0.005%, 1 kHz, -38 dBu input, +18 dBu output
Analog Input to Analog Output: <0.008%, 1 kHz, +18 dBu input, +18 dBu output
Digital Input to Digital Output: <0.0003%, 1 kHz, -20 dBFS
Digital Input to Analog Output: <0.005%, 1 kHz, -6 dBFS input, +18 dBu output
Crosstalk Isolation and Stereo Separation and CMRR
Analog Line channel to channel isolation: 90 dB isolation minimum, 20 Hz to 20 kHz
Microphone channel to channel isolation: 80 dB isolation minimum, 20 Hz to 20 kHz
Analog Line Stereo separation: 85 dB isolation minimum, 20Hz to 20 kHz
Analog Line Input CMRR: >60 dB, 20 Hz to 20 kHz
Microphone Input CMRR: >55 dB, 20 Hz to 20 kHz
Power Supply AC Input
• Auto-sensing supply, 90VAC to 240VAC, 50 Hz to 60 Hz, IEC receptacle, internal fuse
• Power consumption: 35 Watts
Operating Temperatures
• -10 degree C to +40 degree C, <90% humidity, no condensation
Appendic D: Specifications & Warranty • 26
Dimensions and Weight
Microphone node: 1.75 inches x 17 inches x 10 inches, 6 pounds
Analog Line node: 1.75 inches x 17 inches x 10 inches, 6 pounds
AES/EBU node: 1.75 inches x 17 inches x 10 inches, 6 pounds
Router Selector node: 1.75 inches x 17 inches x 10 inches, 6 pounds
GPIO node: 1.75 inches x 17 inches x 13 inches, 8 pounds
Studio Mix Engine 3.5 inches x 17 inches x 15 inches, 10 pounds
Version 2.5, May, 2009
Axia Node Limited Warranty
This Warranty covers “the Products,” which are defined as the various audio equipment, parts, software and accessories manufactured, sold and/or distributed by TLS Corp., d/b/a Axia Audio (hereinafter “Axia Audio”).
With the exception of software-only items, the Products are warranted to be free from defects in material and
workmanship for a period of five (5) years from the date of receipt by the end-user. Software-only items are warranted
to be free from defects in material and workmanship for a period of 90 days from the date of receipt by the end-user.
This warranty is void if the Product is subject to Acts of God, including (without limitation) lightning; improper
installation or misuse, including (without limitation) the failure to use telephone and power line surge protection devices; accident; neglect or damage.
In no event will Axia Audio, its employees, agents or authorized dealers be liable for incidental or consequential
damages, or for loss, damage, or expense directly or indirectly arising from the use of any Product or the inability to
use any Product either separately or in combination with other equipment or materials, or from any other cause.
Axia Audio at its option will either repair or replace the Product and such action shall be the full extent of Axia
Audio’s obligation under this Warranty. After the Product is repaired or replaced, Axia Audio will return it to the party
that sent the Product and Axia Audio will pay for the cost of shipping.
Axia Audio’s authorized dealers are not authorized to assume for Axia Audio any additional obligations or liabilities in connection with the dealers’ sale of the Products.
Axia Audio’s products are to be used with registered protective interface devices which satisfy regulatory requirements in their country of use.
08-31-05 rev 0.9b RKT
01-07-05 rev 1.0 RKT
05-26-09 rev 2.5 BW/CN
Version 2.5 May, 2009
Appendic D: Specifications & Warranty • 27
In order to invoke this Warranty, notice of a warranty claim must be received by Axia Audio within the above-stated
warranty period and warranty coverage must be authorized by Axia Audio. If Axia Audio authorizes the performance
of warranty service, the defective Product must be delivered, shipping prepaid, to: Axia Audio, 2101 Superior Avenue,
Cleveland, Ohio 44114.
Axia Audio, a Telos Company • 2101 Superior Ave. • Cleveland, Ohio, 44114, USA • + •
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