Comrex ACCESS User manual

Using
Comrex ACCESS
over BGAN
Version 1.0
15.01.2008
i
nmarsa
t
.com
/b
gan
Whilst the information has been prepared by Inmarsat in good faith, and all reasonable efforts have been made to ensure its accuracy, Inmarsat makes no warranty or representation as to the accuracy,
completeness or fitness for purpose or use of the information. Inmarsat shall not be liable for any loss or damage of any kind, including indirect or consequential loss, arising from use of the information and all
warranties and conditions, whether express or implied by statute, common law or otherwise, are hereby excluded to the extent permitted by English law. INMARSAT is a trademark of the International Mobile
Satellite Organisation, Inmarsat LOGO is a trademark of Inmarsat (IP) Company Limited. Both trademarks are licensed to Inmarsat Global Limited. © Inmarsat Global Limited 2007. All rights reserved.

Contents
1Overview 1
2Product range 1
3Typical users 1
4Key Features 1
5Benefits to BGAN users 2
6Setting up 2
6.1 Step by step setup – EXPLORER 300/500/527 and 700. 2
6.2 Step by step setup – EXPLORER 110 (formerly Nera WorldPro 1010) 4
6.3 Step by step setup – Hughes 9201 6
6.4 ACCESS Portable configuration 6
6.5 Start your broadcast using ACCESS 7
6.6 Equipment needed 8
7BGAN customisation 8
8Hints and tips 8
9Technical summary 8
10 Further details and support 9

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1 Overview
Comrex ACCESS Stereo BRIC IP codecs offer high quality audio transmission over a wide variety
of wired and wireless IP circuits. Available in both Portable and Rackmount configurations,
ACCESS provides fully bi-directional mono, stereo and dual mono audio transmission with up to 20
kHz frequency response. Used with Inmarsat’s BGAN service, ACCESS allows users to transmit
broadcast quality audio from virtually any location on the planet.
2 Product range
BGAN terminals can be used with either the ACCESS Portable or the ACCESS Rackmount. The
ACCESS Portable, with integral user interface and battery power, is preferred for use with portable
BGAN terminals.
3 Typical users
Comrex ACCESS is in use around the world by radio broadcasters and governmental agencies in a
variety of applications ranging from outside broadcast of news, entertainment and sporting events,
station-to-transmitter links, as well as surveillance and “closed circuit” audio communications.
4 Key Features
Comrex ACCESS codecs offer the following main features over the BGAN network:
•20 Hz to 15 kHz frequency response, fully bidirectional audio using Inmarsat’s 32Kbps streaming
service.
•Built-in audio mixer interface with microphone preamp w/12V phantom power, headphone
output, line level input/output, volume controls.
•ACCESS Portable comfortably fits in the palm of your hand and includes rechargeable LiON
battery, good for seven hours of talk time.
•Optional “clip on” mixer provides an addition five mic inputs and headphone outputs.
•Optional HE-AAC algorithms provide up to 20 kHz audio using Inmarsat’s 64Kbps streaming
service.

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5 Benefits to BGAN users
Comrex ACCESS provides:
•Completely wireless transmission from virtually anywhere on Earth.
•A small, compact, handheld unit (less than 6 lbs./3 kg).
•15 kHz mono and stereo transmission using 32 kbps Streaming.
•Ability to be pre-configured for “Plug & Play” operation.
6 Setting up
This section describes how to set up BGAN for use with Comrex ACCESS and gives an example of
a typical configuration when using ACCESS with a BGAN terminal. Broadcast transmission was
tested over a standard 32 kbps Streaming connection using an EXPLORER™ 500. The audio
broadcast was transmitted to a terrestrial Internet address. The test showed that BGAN terminals
and the Inmarsat BGAN network work well as a transport media for the Comrex ACCESS IP
Codec. The test has also been carried out with the EXPLORER 110 and the Hughes 9201; it is
assumed to work as well with the EXPLORER™300, EXPLORER™527 and EXPLORER™700.
The ACCESS Portable, computer and BGAN terminal should be connected to a switch or directly
with Ethernet cables, as shown in the diagram above. The computer’s IP settings should be
configured for DHCP. The ACCESS IP settings are described below.
6.1 Step by step setup – EXPLORER 300/500/527 and 700.
The 32 kbps Streaming service should be initiated from the BGAN terminal, and can be configured
from either the EXPLORER’s built-in web server (via a laptop’s web browser), or using the LCD
interface on the terminal.
Note: Although the solution will work on the Standard IP connection type, there is no quality
guarantee, so Inmarsat recommends that you utilise the 32Kbps Streaming connection.

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The screenshot below shows the settings required as configured via the EXPLORER’s web server
interface. Please consult your EXPLORER manual for more detailed information.
Connecting to BGAN via the terminal’s LCD interface
For security reasons, a Streaming IP connection needs to be started manually. This is to ensure
that per minute charges do not inadvertently accrue when the EXPLORER terminal is switched on,
and allows you to more carefully monitor usage and connection time. The screenshot below shows
you how to set up using the EXPLORER’s LCD interface.
a. To initiate a connection from the LCD interface, go to the main view of the LCD.

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b. Press the arrow down button until the CONNECT menu displays.
c. Press OK. The following screen displays:
d. Select STREAMING 32, and press OK. The following screen displays:
e. Select START and press OK. The following screen displays:
f. Press OK to confirm the Streaming connection, and wait a minute or two to allow the
EXPLORER to register the Packet Switched connection with the BGAN system. After
registration the LCD main screen will show DATA ACTIVE, as shown below:
Now go to “ACCESS Portable configuration” on page 6.
6.2 Step by step setup – EXPLORER 110 (formerly Nera WorldPro 1010)
This section describes how to set up BGAN for use with Comrex ACCESS, and gives an example
of a typical configuration when using ACCESS with the EXPLORER 110 terminal.
This is a one-time configuration to set the terminal up so that it connects to the network
automatically. After the first time you only need to follow the instructions for “Connecting to BGAN”,
below.
The 32 kbps Streaming service should be initiated from the BGAN terminal, and needs to be
configured from the EXPLORER 110’s built-in web server (via a computer’s web browser).

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Note: Although the solution will work on Standard IP, there is no quality guarantee, so Inmarsat
recommends that you utilise the 32kbps Streaming connection.
To do this:
a. Open your internet web browser and type the following IP address in the address bar:
192.168.0.1
b. Now you should see the web server interface. On the left hand navigation select Data
connections.
c. Change the connection type by clicking the dropdown box and selecting Streaming 32 kbps.
d. Make sure Data Connection Activation is set to Automatic when any PC is connected to
the Nera WorldPro.
e. Before you exit the web interface make sure you click Store Settings.
Connecting to BGAN
You can connect to BGAN in two different ways - from the web server interface, or by using the
terminal’s front panel.
To use the front panel:
a. Power on the terminal by pressing and holding the ACTIVATE button for 1.5 seconds.

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b. Obtain a GPS fix.
c. Find the best signal.
d. Press the ACTIVATE button to automatically register to the network. Wait approx. 30 seconds
and you should be able to connect to the Internet. (If you have a Nera World Set, the display
shows Connected’)
Now go to “ACCESS Portable configuration” on page 6.
6.3 Step by step setup – Hughes 9201
The Access Portable uses the Automatic Context Activation (ACA) feature of the Hughes 9201 to
activate a PDP context after the terminal is registered with the BGAN Network.
The Access Portable cannot manually configure the Hughes 9201 to establish a PDP context. To
set up the Hughes 9201 to establish a PDP context automatically, simply change the Access
Portable IP address as follows:
a. Use the menu at the top of the screen on the Access Portable to select Network > Manage
Networks
b. Select Ethernet Port on the main screen, and click Configure at the bottom left of the screen
c. In the window that appears select the TCP/IP tab, and uncheck Acquire address
automatically (DHCP)
d. Set a static IP address between 192.168.128.210 to 192.168.128.219. Once the Access
Portable is ready to broadcast to the BGAN IP network, it will automatically open a 32kbps
Streaming IP data connection.
e. Set the Subnet mask to 255.255.255.0 and the gateway to 192.168.128.100 (default)
f. You may want to enter a DNS server (provided by your ISP), if you are calling an IP address
this is not needed.
g. Click Save
Connecting to BGAN
As with all the terminals, connect using an Ethernet cable.
a. If you need to acquire a new GPS then do so. Consult the ‘Getting started with Hughes 9201’
guide for more information. You have a new GPS when the GPS LED on the terminal is solid
green.
b. Press and hold the audio button for 3 seconds to register the terminal. The terminal is registered
once the GPS light goes out completely.
c. When you try making a call, the third LED from the right should start to flash. The data
connection is established when the signal strength light goes solid Green. If it goes red, it has
failed.
Now refer to “ACCESS Portable configuration” below.
6.4 ACCESS Portable configuration
No changes to the default Ethernet settings on the ACCESS Portable are required. Be sure that the
ACCESS is set for DHCP network addressing.

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6.5 Start your broadcast using ACCESS
Select the Remotes menu and then Manage Connections from the drop down menu to display the
Select Remote ACCESS Unit menu. This menu allows you to select from a number of pre-
configured connections, and simply press the green Connect button to initiate the transmission of
audio.
If a connection has not been pre-configured for your receiving “Studio” unit, simply select Add New
Remote from the Remotes drop down menu. The screen below displays, allowing you to enter the
information necessary to connect to the Studio unit. Please consult your ACCESS user’s manual
for a more detailed description of these functions.

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6.6 Equipment needed
•ACCESS Portable or ACCESS Rackmount Codec.
•BGAN terminal.
•Laptop computer with web browser.
•Multiport Ethernet switch.
•ACCESS Rackmount connected to the public Internet (studio side).
7 BGAN customisation
No BGAN customization is required.
8 Hints and tips
The following are best practice hints and tips to ensure you get the most from ACCESS over
BGAN:
•The BRIC-HQ2 algorithms that come standard with ACCESS provide broadcast quality mono
and stereo transmission when used with BGAN 32 kbps Streaming service.
9 Technical summary
Feature ACCESS rack mount ACCESS portable
Data connections RJ-45, RJ-11 (PSTN), USB,
Serial 9-pin, GPI 9-pin RJ-45, CardBus slot, USB, Serial DIN, GPI DIN
Audio input connections Stereo balanced line level
XLR, AES3 XLR Mono balanced adjustable mic/line XLR, unbalanced
stereo line level 1/8”(3mm),
unbalanced hands free
mobile 1/8” (3mm)
Audio output connections Stereo balanced XLR, AES3
XLR Unbalanced stereo adjustable headphone 1/8”
(3mm), unbalanced stereo
line level 1/8” (3mm),
unbalanced hands free
mobile 1/8” (3mm)
Power connections IEC style, internal 110/220V
auto-switching DIN style, external 110/220V auto-switching, rechargeable
LiON battery, 12V DC
connector (optional)
Display options Via web browser to
integrated web server, VGA
adapter on rear panel
Via web browser to
integrated web server,
integrated TFT display

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Standard algorithms BRIC-HQ1, BRIC-HQ2,
BRIC-ULB, Linear BRIC-HQ1, BRIC-HQ2, BRIC-ULB, Linear
Optional algorithms AAC, HE-AAC, HE-AAC v2,
AAC-LD AAC, HE-AAC, HE-AAC v2, AAC-LD
Firmware Updates Available via IP Available via IP
BGAN IP addressing
requirement Supports STATIC and DYNAMIC addressing Supports STATIC and DYNAMIC addressing
Data Protocols supported UDP, TCP, RTP, Multicast UDP, TCP, RTP, Multicast
10 Further details and support
Inmarsat contact:
E-Mail: [email protected]
Comrex contact:
Comrex Corporation
19 Pine Road
Devens, MA 01434 USA
[phone] office
[phone] fax
[email protected]
www.comrex.com