OFDM Radio Quick Start Guide
Wireless Excellence Limited
The Oxford Science Park, G6, Magdalen Centre
Robert Robinson Avenue, Oxford OX4 4GA
T: +44 (0)870 4959169 E: sales@wirelessexcellence.com
F: +44 (0)871 9187618 W: www.wirelessexcellence.com
20 January 2015
OFDM Radio products
Quick Start Guide
Point to Point, Point to Multipoint and WiFi Access Points
Dear Customer,
Thank you for choosing CableFree Wireless products!
If you have requested specific pre-configuration of the items supplied please check before
following configuration instructions here.
All CableFree Radios are factory pre-configured with either standard (default) or customerspecific pre-configuration. Should you need or you want to alter the settings within your
device these settings should be your starting point.
Note that this document covers RadioOS, the fully-featured wireless operating system. For
other products using other operating systems, please refer to appropriate documentation.
Important Notes:
When testing radios indoors (lab environment) take note carefully of the following:
Only use Power Supplies and/or POE Injectors supplied. Use of 3rd party power units may
cause damage and void warranty
Do not point high gain antennas directly at each other at short range: otherwise overload
to sensitive radio receivers may occur, causing permanent reduction in receiver sensitivity.
Either point antennas away from each other, or use several sheets of cardboard or wood to
attenuate the signals. Received signals higher than around -20dBm are excessive.
Do not power up high power connectorised radios without antennas attached: otherwise
damage to the transmitter may be caused by reflections from the unterminated connectors
When installing radios outdoors take note carefully of the following:
Mount radios carefully ensuring that all mounts, brackets are robust, correctly specified
and suitable for the task. Ensure that there is no risk of the radios or antennas falling from
the building in high winds or other mechanical shock or vibration. Ensure all screws are
tightly fastened. Use only rust-proof stainless steel bolts on any 3rd party brackets.
© 2014 Wireless Excellence Limited All Rights Reserved. OFDM-QSG
OFDM Radio Quick Start Guide
Use Waterproof RJ45 "Field Attachable Connector" kits provided. Assemble and mate
carefully. Do not allow moisture ingress into radios or warranty will be voided.
Use Waterproof tape ("Self Amalgamating Tape") around all N-type RF connectors to avoid
moisture ingress. Check carefully or radios and/or antennas may be damaged, RF cables
destroyed, and warranties may be voided.
Out of the Box:
Wireless Excellence supplies all CableFree radio systems factory preconfigured, in that
powering up the items, and placing in a compatible radio environment (with antennas, lack of
interference) they will automatically associate, and traffic should pass.
To power up a radio, use the appropriate power supply or POE injector provided. Do not use
any other power supplies; this will invalidate warranty and may cause damage.
Note there is a boot-up time of each radio of about 60 seconds or less. Boot-up time is
dependent on CPU and specific software installation. During boot-up, the entire RadioOS
operating system loads from FLASH storage into RAM, initialising hardware devices and
appropriate drivers. There is no need to interact with RadioOS during boot-up.
After boot-up, the “bridge” function in each radio “learns” the topology of the attached
network by adding each known device to the MAC table, just like any normal layer 2 Ethernet
After boot-up and bridge learning processes have completed, the network should pass traffic
transparently, as the default configuration has no bandwidth management, authentication or
traffic limits set.
The IP scheme used for management has been chosen to be 192.168.1.x, which is very
simple, but the radios act as bridges, passing all other traffic from other IP addresses as well.
This also enables the management network to be implemented on a subnet not accessible to
clients or other users on the network.
First Steps:
Ensure that you have a direct connection to the device, normally an Ethernet connection via
RJ45 connectors. This may well be from a laptop, as you may need to alter your IP address,
(Please use a search engine if you do not know how to do this).
You may have a specified IP address used on the device, this should be located in the
documentation for the order, (Normally email attachments or text within a message of what IP
you wanted on the device).
If the default IP will normally be (If you have a Point to Point pair then the
slave will be It is suggested that you use PING to establish that you can
contact the device.
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OFDM Radio Quick Start Guide
Connect to Device:
There are several ways to connect to the device, we prefer customers to access the
settings by ‘Webfig’ this is carried out through a web browser.
There are other methods for management of the devices, Telnet, SSH and Winbox,
which should only be utilised by advanced users and ideally with the support of the
supplier/manufacturer to assist using Team Viewer. For almost all deployments we
recommend Webfig as the preferred tool.
Webfig is a powerful graphical user interface (GUI) tool which allows management of all
aspects of a CableFree radio. It works with all radios, HPR, MPR, whether in point-to-point,
base station or client site application. Webfig requires a valid IP address on the CableFree
radio to connect to, and runs on any PC running Win2000, XP, Vista, 7, 8, etc.
Click on the ‘Webfig’ and you will be taken to the logon page. The default username is ‘admin’
and password is blank (no password). You will then be greeted with the interface page.
Alternatively you can use the following in the address bar of your browser:
http://<IP address of unit>/webfig
For ease this is the default link:
You will reach the following prompt (unless your browser has cached previously-used
The default factory setting is "admin" for user and a blank password
You will then arrive at the following screen:
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OFDM Radio Quick Start Guide
On the screen above you will note a list of “features” on the left hand side. Some have submenus, shown by the small arrow to the right of the text.
Webfig allows simple ‘point and click” configuration of parameters, allowing for quick changes
and alterations to the system.
Caution: It is easy to set a non-valid configuration of the radio router using Webfig, and
even possible to set a configuration where access to the unit is lost. Common mistakes
including setting an invalid IP address,, or worse, the Ethernet port disabled.
Please take GREAT CARE to avoid this scenario. In some cases, it may be possible and
necessary to do a “cold boot” of the operating system which will lose all configuration.
In the worst case, of both the Ethernet port being and radio being disabled, it may be
necessary to send the unit back to Wireless Excellence factory, where the unit can be
opened and re-configured for use. Please note that may incur a charge for repair,
please contact us for support packages or one off support.
General Conventions, Menu access & a Key Tool:
Use the side menu to access the individual items, then click on an item you will see the
standard options at the top of the page:
We advise that you only use, ‘OK’, ‘Cancel’ and ‘Apply’, ‘Remove’ will delete items and ‘Torch’
is a specific function normally used by suppliers to restrict configuration.
With the side menu, you will not that the items with additional options has an arrow and when
clicked the sub menu will show:
© 2014 Wireless Excellence Limited All Rights Reserved. OFDM-QSG
OFDM Radio Quick Start Guide
There are a number of tools available within the tool menu, items such as the ‘Bandwidth Test’
will be some of the most useful when testing connection bandwidth. There is also a link to the
manual, often shown on the web page where you select Webfig, we do advise reading the
sections on the setting you want to adjust.
Key Tool:
There is a key tool which we do strongly suggest you use, this is within the ‘Files’ option from
the side menu. In this area you can create a backup of the running configuration, this means
that you make changes that do not work you can restore back to a working version. Before
you begin making changes, click on the ‘Files’ option from the side menu. You will then see
the installed files, please do not remove these as they are default for making the device work.
To create a backup it is a simple operation of just clicking on the ‘Backup’ button, you will then
see the file it has created.
You can download this to your laptop or PC, we do advise that you take a working copy in case
there is an issue and it needs to be restored. Should you want to restore the working file,
simply click on ‘Restore’ button and agree to the install and re-boot.
© 2014 Wireless Excellence Limited All Rights Reserved. OFDM-QSG
OFDM Radio Quick Start Guide
This is the first page we came to after logon, here you will see the interfaces on the device.
This will include all interfaces setup and those available for use, it is noted that on some
equipment some of these interfaces are not available for use hence left disabled during
Here you can see that there are three interfaces, two which are physical, ether1 & wlan1 and
one which is software based and creates a link between devices, a Bridge. A single click on
the ‘etherX’, (ether1 in this case), will bring up the details and options for the device.
© 2014 Wireless Excellence Limited All Rights Reserved. OFDM-QSG
OFDM Radio Quick Start Guide
Here you can see the setup for ‘ether1’, as well as a number of settings you may wish to alter.
There is more information as you scroll down the page, you can see the traffic monitoring ‘real
time’ for this device.
At the top of the page you can see the Interface name (can be changed), type, MTU, MAC
address and ARP (address resolution protocol) setting. Then we move on to the interface
state after auto-negotiation. Here, speed settings can be “fixed” to 10 or 100Mbps, and the
full/half duplex and Negotiation modes changed. You do not change the IP address here, this
is located in the IP sub-menu.
The ‘wlan1’ interface page is slightly different as there are more details and options depending
on the desired setup. It is noted that there is a lot of options and information here as well as
linked options within the other menu items.
Firstly, you will see that you can enable and disable the interface with the check box. Also you
can alter the name SSID, Frequency and associated RF options. Please be careful when doing
this as to not interfere with existing networks in your location. We do suggest using a WiFi
scanner to see all the channels and frequencies used locally, this can be done here, with the
option at the top of the page or by using another product.
The radio type preferred in all CableFree products is a family of cards using the Atheros
chipset, which currently offers state-of-the art in unlicensed radio performance, in terms of
features, throughput (including turbo mode), output power and receiver sensitivity. Atheros
radios are continually improving, with a new chipset available and implemented in shipping
cards approximately every 18 months.
They are fully back compatible and interoperability is always assured. CableFree has long held
the policy of supporting the “latest proven and stable technology”, as well as supporting
customers with “legacy” equipment many years old. This means a network roll-out is ensured
to be smooth, as well as future-proof to the limits of technology available.
© 2014 Wireless Excellence Limited All Rights Reserved. OFDM-QSG
OFDM Radio Quick Start Guide
In the ‘Advanced Mode’ the radio band (2.4 or 5GHz) is set, with sub-choices for channel
bonding (turbo mode) and b/g, b-only and g-only modes at 2.4GHz. The exact frequency is
set from the available bands (note that in the next software version, 2.9.x, regulatory domain
(country) and other settings prevent operation on unauthorised bands/power levels for the
given country.
The transmit power can be altered, in dB. The default is that of the radio card (normally
maximum ‘safe’ power), and the power can reduced as required when high-gain antennas are
used to maintain the EIRP restrictions for a particular country. DFS mode is for radar
avoidance, required at 5.8GHz, and again in 2.9.x software, TPC (transmit power control) can
be set to automatic to meet ETSI regulations.
You can also see and alter the data rates supported by the card. These can be pre-set to
disable connection at certain speeds. Remembering that the slowest client connection on an
access point reduces all others to the same speed, it is common to use this to enforce a
reasonable “lowest common denominator”.
As we scroll further down the page, we can see there are fewer options, along with a useful
real time traffic monitor.
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OFDM Radio Quick Start Guide
One of the advanced options covers Wireless Protocols. Two important protocols are NV2 and
Nstreme. These give a huge performance advantage compared to conventional OFDM radios
including most radios on the market.
Both NV2 and Nstreme are proprietary protocol extensions which is one of the major
differentiators of RadioOS based radios over ordinary 802.11a/b/g and other TDD chipsets.
When turned off, the radio performs just as a standard 802.11 device and the router can be
configured to act as an access point or client, connecting with cheap network equipment from
Netgear, Dlink etc as well as Proxim and Cisco.
With NV2 or Nstreme enabled, the wireless protocol is now encrypted using a proprietary rearrangement of packets and uses Framing and Polling protocol which ensures best possible
wireless throughput in all conditions. This avoids the ‘send-acknowledge’ CSMA and ACK
protocol that slows 802.11 greatly at long range. With NV2 or Nstreme and other relevant
modes enabled, approximately 30-50% improvement in traffic throughput will be seen.
Note: NV2 is a new feature and is preferred over Nstreme.
There are many new features in NV2 and overall higher performance.
Default factory configuration is to use NV2.
© 2014 Wireless Excellence Limited All Rights Reserved. OFDM-QSG
OFDM Radio Quick Start Guide
Selecting a Bridge interface shows the settings and performance of the Bridge. The bridge is a
“virtual interface” as it has no hardware – the network administrator configures a bridge to
include the actual physical interfaces (LAN, wireless, etc) as required, which are then bridged
together. There are general various parameters including the MAC address of the bridge, and
the ARP policy are displayed.
The Spanning Tree Protocol (STP) settings and status. STP is used to avoid “loops” in a
bridged (switched) network, allowing redundant connections to automatically switch-over
(though note STP has quite a long convergence time, and may not be ideal for all uses).
The Bridge status. None of the items can be configured. When we scroll down to the end of
the page, the traffic monitor on the Bridge interface, in kbps and packets/second. This is in
real time.
© 2014 Wireless Excellence Limited All Rights Reserved. OFDM-QSG
OFDM Radio Quick Start Guide
IP Address:
Accessing the IP address can be achieved by clicking on ‘IP’ then from the sub-menu click on
‘Addresses’. Here you will see any set on the device and to which interface they have been
Should you wish to change the address, click on the address, this will show the settings for the
address and the interface it is applied too as shown.
You can just change the address here and select apply, however we do suggest adding a new
one and testing first. To do this select ‘Add New’ and fill in the boxes and click apply. Please
not that you should always identify the subnet in use, in this case a ‘/24’ at the end of the IP
address. It is also useful to add comments to the addresses, this allows others to see what
has changed and why. You can also add an address to an interface, which may be of use if
you are using multiple interfaces.
Note that by default we recommend putting IP address on the "bridge" interface, and then
ensuring all relevant interfaces (LAN, wireless) are in the bridge. Only change this if you are
absolutely sure of your network and unit configuration.
This useful feature needs to be enabled (off by default) and records the performance of the
unit over long periods of time, enabling useful diagnostic and comparison of present and past
performance. Go to Tools-Graphing on the menu, and select the interfaces which you would
like to be recorded.
An example of output in the web interface is shown below:
© 2014 Wireless Excellence Limited All Rights Reserved. OFDM-QSG
OFDM Radio Quick Start Guide
Using Tools:
All of our units with RadioOS are bundled with a set of powerful tools, these aid with
installations, testing and fault recognition. This will only cover those tools useful to you as the
customer, a number of these are only used within the manufacturing of the unit.
One of the most useful tools is the ‘Bandwidth Test’, this is accessed by clicking the ‘Tools’
item on the menu and then clicking ‘Bandwidth Test’ on the sub-menu. This will show the test
Note that Bandwidth tester is extremely processor-hungry: if you attempt to run bandwidth
tester on a router that is in service, it will degrade other functions. It is always better to use
Bandwidth tester on routers either side of the router (or pair of routers) which need to be
© 2014 Wireless Excellence Limited All Rights Reserved. OFDM-QSG
OFDM Radio Quick Start Guide
CableFree has developed some compact stand-along “bandwidth tester” appliances loaded
with RadioOS which can act specifically as bandwidth test server/clients specifically for the
purpose of testing network infrastructure. They are capable of generating more than 100Mbps
full duplex pseudo-random network data using the UDP protocol.
In the first text box, enter the IP address of the other router (the one you want the test
running to). Select protocol (UDP or TCP) and the direction (send/receive/both).
If the bandwidth test tool connects correctly, you can see the overall throughput achieved
instantaneously as well as 10s and long term average.
On the second tab, it is necessary to enter a valid user ID and password of the opposite router
in order for it to authenticate.
Power, Powering Down or Power Interruption:
CableFree radio systems are designed for uninterrupted operation and may be left powered up
for many years at a time. The embedded RadioOS operating system is designed for such
operation without need for restarts or reconfiguration. However for maintenance or
reconfiguration, or in the case of a power outage, it may be necessary to switch off a
CableFree radio system.
There are no special procedures for switch-off: simply remove the power to the radio. The
RadioOS system is designed for this use and no damage or loss of configuration will occur.
When power is next applied, RadioOS will simply restart, and wireless connections will be
automatically restored.
Further Information:
Additional manual materials can be obtained, as can training in all of the products Wireless
Excellence produce. These can be a chargeable option, however on larger projects these can
be rolled in with the project cost.
We do offer an online support service, this can either be part of a bespoke package with
regular health checks or as a on off cost to aid staff in managing the products installed on
sites. The one off option is very popular with new staff.
Extended Warranties:
You may wish to extend your 13 month warranty, this can be done by contacting our friendly
staff or the company who you purchased the equipment from. This can extend the supported
life of a product up to 5 years from the purchase date and with some products this can go to a
10 year period.
For any questions,
Please contact our technical team at:
Wireless Excellence Limited
The Oxford Science Park, G6, Magdalen Centre,
Robert Robinson Avenue, Oxford OX4 4GA
T: +44 (0)870 4959169
E: sales@wirelessexcellence.com
F: +44 (0)871 9187618
W: www.wirelessexcellence.com
© 2014 Wireless Excellence Limited All Rights Reserved. OFDM-QSG
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