The contents of this manual are not intended to and do not constitute a
warranty of any sort. M/A-COM, Inc and Tyco Electronics specifically
disclaim any implied warranties of merchantability or fitness for any
particular purpose resulting from this manual.
Information in this document is subject to change without notice. M/ACOM, Inc. reserves the right to revise and make changes to this manual (and
to the Kensington product and software) from time to time without
obligation to notify any person of, or to provide any person with, such
revisions or changes.
M/A-COM, Inc . and/or Tyco Electronics may have patents, patent
applications, trademarks, copyrights, or other intellectual property rights
covering subject matter in this document. Except as expressly provided in
any written license agreement from M/A-COM, the furnishing of this
document does not give you any license to these patents, trademarks,
copyrights, or other intellectual property.
Document # TBSL.Part No. 000-0000
Printed in the United States of America
Preface
Notices to the User and Safety
Training Information
IMPORTANT INFORMATION ON SAFE AND
OPTIMAL OPERATION. READ THIS BEFORE
USING YOUR M-803 MOBILE RADIO
Your M-803 radio generates RF electromagnetic
energy during transmit mode. This radio is designed
for and classified as “Occupational Use Only”
meaning it must be used only during the course of
employment by individuals aware of the hazards and
WARNING
the ways to minimize such hazards. This radio is
NOT intended for use by the “General Population”
in an uncontrolled environment.
This radio has been tested and complies with the FCC
RF exposure limits for “Occupational Use Only.” In
addition, your M-803 radio complies with the
following Standards and Guidelines with regard to RF
energy and electromagnetic energy levels and
evaluation of such levels for exposure to humans:
•FCC OET Bulletin 65 Edition 97-01 Supplement
C, Evaluating Compliance with FCC Guideli nes
for Human E xposure to Rad io Frequency
Electromagnetic Fields.
•American National Standards Institute (C95.1 –
1992), IEEE Standard for Safety Levels with
Respect to Hu man Exposure to Radio Freq uency
Electromagnetic Fields, 3kHz to 300 GHz.
Use of this radio as described below will result in user
exposure substantially below the FCC recommended
limits for human exposure to Radio Frequency
Electromagnetic energy.
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Before operating this radio, be sure you:
•Do not operate this radio if any of the RF
connectors are not secure or if open connections
are not properly terminated.
•Do not operate this radio near electrical blasting
caps or in an explosive atmosphere.
This radio has been tested and complies with the FCC
RF exposure limits for Uncontrolled Exposure and
Occupational exposure. The difference is in the
minimum safe distance that people must be away from
the antenna when transmitting RF energy. To assure
optimal radio performance and that human exposure to
RF electromagnetic energy is within the guidelines,
transmit only when people are at least the minimum
distance away from a properly installed antenna. The
following lists these minimal allowable d istances:
M-803 Radio
Rated Power
45 dBm max,
43 dBm nominal
45 dBm max,
43 dBm nominal
The radio must be serviced and installed only by a
qualified technician. Be sure that the radio is properly
grounded according to the installation instructions.
Note on jump-starting: If you need to jump start an M803 equipped vehicle, the positive radio lead from the
radio must be disconnected from the vehicle battery.
Disconnecting the lead will prevent damage to the radio.
This equipment generates or uses radio frequency
energy. Changes or modifications to this equipment
may cause harmful interference unless the
modifications are expressly approved in the instruction
manual. The user could lose the authority to operate
this equipment if an unauthorized change or
modification is made.
Antenna
Gain
Minimum
Distance for
Uncontrolled
Exposure
0 dB68.5 cm (27
inches)
3 dB97.6 cm (38.4
inches)
Minimum
Distance for
Occupational
Exposure
30.6 cm (12
inches)
43.2 cm (17
inches)
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This equipment has been tested and found to comply
with the limits for a Class B digital device pursuant to
Part 15 of the FCC Rules. These limits are designed to
provide reasonable protection against harmful
interference in a residential installation.
Government law prohibits the operation of unlicensed
transmitters within the territories under government
control. Illegal operation is punishable by fine or
imprisonment or both. Refer service to qualified
technicians only. Do not operate your transceiver in
explosive atmospheres (gases, dust, fumes, etc.).
Occupational Safety Guidelines and
Safety Training Information
To ensure that your exposure to RF electromagnetic
energy is within the FCC allowable limits for
occupational use, always adhere to the following
guidelines.
CAUTION
Your M-803 Mobile Radio transmits using a remote
antenna. When it is ON, it receives and also sends out
radio frequency (RF) signa ls.
In 1996, the Federal Communications commission
(FCC) adopted RF exposure guidelines with safety
limits for portable devices, based on the recommended
limits of the National Council on Radiation Protection
and Measurements (NCRP) and the American National
Safety Institute (ANSI).
The design of the M-803 Mobile Radio complies with
the FCC guidelines for Occupational / Controlled
exposure to RF electromagnetic fields, as measured by
the Maximum Permissible Exposure (MPE). To assure
optimal performance and make sure human exposure to
RF electromagnetic energy is within the FCC
guidelines, always adhere to the following:
1. The push-to-talk button should only be depressed
when intending to send a vo ice message.
2. The radio should only be used for necessary work
related communications.
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3. The radio should only be used by authorized and
trained personnel and should not be operated by
children.
4. Do not operate your radio in explosive
atmospheres (gases, dust, fumes, etc.) or near
explosive blasting caps.
5. Do not attempt any unauthorized modification to
the radio. Changes or modifications to the radio
may cause harmful interference. Any servicing of
the radio should only be performed by qualified
personnel.
6. Always use M/A-COM authorized accessories
(antennas, control heads, speakers/mics, etc.). Use
of unauthorized accessories can cause the FCC RF
exposure compliance requirements to be exceeded.
The information listed above provides the user with the
information needed to make him or her aware of a RF
exposure, and what to do to assure that this radio
operates within the FCC exposure limits of this radio.
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Table Of Contents
Welcome to the OpenSky Network 1
OpenSky Overview 2
Internet Protocol (IP) Network 2
TCP / IP Backbone 2
Addressable Headers 3
System-Wide Voice Encryptability 3
Integrated Voice and Data 3
Digitized Voice, Text and Graphics 4
Multi-Age nc y Cove ra ge 5
Promotes Interagency Cooperation 5
Connectivity with Legacy Equipment 6
Improved Coverage and Signal Strength 6
Better Peak-Time Performance 7
Software-Config u red Device 8
Multi-Mode Functionality 8
Software Upgradeable 9
Network Organization 11
Your Voice Feature Personality 12
User Groups 13
Profiles 14
Talk Groups 15
Listen Groups 15
Talkback Scanning 16
Radio Personality 16
Terminology 18
Getting Started 19
Before Your First Shift 20
Radio Controls 20
Front Panel Components 21
Peripheral Interface 23
RS-232 Port 23
I/O Connector 23
CAN 2.0 Bus 23
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Hardware Connections 23
Display Screen Overview 25
Dwell Displays 27
Dwell Display User-Selectable 27
Sample Dwell Displays 28
Dwell Display–Profile 28
Dwell Display-Caller 29
Dwell Display–Received Talkgroup 29
Dwell Display–Channel 30
Dwell Display–No Access 30
Display Screen Functions 33
Menu and Selector Keypad 34
User-Selectable Menu Operations 34
Keypad Navigation 34
Select Dwell Display 35
Select Operational Mode 36
Universal Connectivity 37
Duration of Mode Change 38
Select Profile 39
Check or Change Active Profile Status 40
Select Talkgroup 41
Check or Cha nge Active Talkgroup 41
Prioritizing a Talkgroup 43
Duration of Priority Assignments 44
Lock Out Talkgroup 44
Groups You Can Lock Out 45
Caution Regarding Profi l e Changes 48
Select Scan Mode 48
Check or Change Active Scan Mode 49
Duration of Scanning Mode Selections 50
Select Channel 51
Enable/Disable Side Tones 52
Select Brightness Setting 53
Basic Radio Operations 55
Power Up 56
Log-On 57
Self-Test 58
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Power Down 59
Set Volume 60
Voice Calls 61
Talkback Calls 63
Emergency Communications 64
Advanced Radio Operations 65
Fine-Tuning Your Personality 66
Dynamic Regrouping 66
Talkaround Mode 67
Troubleshooting 68
CH-103 Control Head 71
Features and Components 72
Equipment Configurations 73
Dash-Mount Mobile Configuration 73
Dash-Mount Mobile with CH-103 74
Trunk-Mount Mobile Configuration 76
VTac Vehicular Tactical Network 77
Full or Shared Radio Controls 78
Single Control Head 79
Multiple Control Heads 79
Independe nt Functions 79
Shared and Arbitrated Functions 80
VTac Vehicular Tactical Network 81
Vehicular Tactical Network 82
Backward and Forward Compatibility 82
Operational Modes 83
“A Base Station in a Trunk” 83
Hardware Components 84
VTac Mobile Unit 84
VTac Base Unit 85
RF Combiner 85
Extended Coverage 85
User Interaction 85
Scene of Incident 86
User Interaction 86
Public Safety Hardened 86
GPS Option 87
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Connectivity Interface 87
Indexes and Tables i
Index i
Table of Figures iii
xxxxM-803 Operator Manual Softw are Versio n OTP 5.07
CHAPTER 1
Welcome to the OpenSky Network
OpenSky Overview 2
Internet Protocol (IP) Network 2
TCP / IP Backbone 2
Addressable Headers 3
System-Wide Voice Encryptability 3
Integrated Voice and Data 3
Digitized Voice, Text and Graphics 4
Multi-Age nc y Cove ra ge 5
Promotes Interagency Cooperation 5
Connectivity with Legacy Equipment 6
Improved Coverage and Signal Strength 6
Better Peak-Time Performance 7
Software-Config u red Device 8
Multi-Mode Functionality 8
Software Upgradeable 9
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CHAPTER 1—Welcome to the OpenSky Network
OpenSky Overview
M/A-COM’s OpenSky is a suite of radio communications products implementing an integrated digital
voice and data system based on the Internet Protocol.
The OpenSky network is digital, but provides interoperability with analog radios, making it possible to
integrate existing (legacy) equipment alongside the
most sophisticated digital equipment available today.
If you’ve been issued an M-803 to replace a
conventional analog voice-only radio, you’ll
particularly appreciate the integrated voice and data
capabilities of the all-digital OpenSky mobile
equipment.
Even experienced digital subscribers recognize and
value the addressability precision and expanded
coverage strength of the e nd-to-end TCP/IP OpenSky
Intranet.
Internet Protocol (IP) Network
OpenSky’s Wireless Private Network is changing the
nature of real-time communications for large fleet
mobile businesses and public safety organizations
alike.
TCP / IP Backbone
Using Internet Protocol (IP) as a network backbone for
end-to-end user applications, OpenSky integrates
digital voice and packet data transmission over a single
network that provides significant performance
advantages over yesterday’s uneasy alliances of
independently-built radio networks trying
unsuccessfully to interact.
•Like tuning into a channel in a conventional FM
radio system, logging onto the Ope nSky network
with your pre-configured user profile will place
you in contact with the members of a software-
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defined talk group consisting of the set of users
you need to talk with most.
•Unlike your conventional FM radio, your M-803
mobile radio is a node on an Internet-Protocol (IP)
network with i ts own unique IP addre ss.
Addressable Headers
Messages intended for you (whether voice or data) are
broken into packets with identifying headers, just like
World Wide Web internet communications, and
targeted to your specific IP address.
You can travel anywhere within your network, e ven a
Like cell-phone calls,
messages are del ivered
directly to your
equipment.
But, like radio calls, users
select which calls to
receive by “tuning in” or
“locking out ” oth er us er
groups.
hundred miles or mor e fro m the se nde r , and me ssa ge s
intended for your IP address will find their way acr oss
the network, handed off from base station to base
station, until they are re-configured and delivered to
your personal receiving set.
This doesn’t mean your communications are traveling
across the World Wide Web. Far from it. OpenSky is a
private wireless Intranet that adopts the best features of
IP protocol for increased communications efficiency
and capacity.
Welcome to the OpenSky Networ k—CHAPTER 1
System-Wide Voice Encryptab ility
Furthermore, your communications are packeted as
they travel the network, so they can only be deciphered
by networked equipment. Your sensitive conversations
and data transfers can even be encrypted end-to-end for
enhanced system-wide security.
Integrated Voice and Data
Your M-803 Gemini Series Mobile Radio is a
hardware component of the OpenSky network, an
integrated voice and data communications system that
delivers end-to-end digital voice and data transmissions
over a single wireless network to your dash-mounted or
trunk-mounted device.
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CHAPTER 1—Welcome to the OpenSky Network
Digitized Voice, Text and Graphics
By converting analog voice waves to digital code
before transmitting them over the network, OpenSky
technology makes it possible for mobile radio users to
send and receive voice transmissions at the same time
they receive and view data (via the radio’s serial port)
on an optional equipment Mobile Data Terminal.
With an M-803 in your vehicle, you’ll be able to scroll
For graphics, i nt er face a
Mobile Data Terminal
(MDT) through your
radio’s RS-232 per i p heral
port.
through complex instructions, driving directions, or
emergency warnings on an optional mobile computer
or terminal device while at the same time carrying on
conversations with dispatchers or other mobile
operators in your coverage area.
OpenSky and the M-803 eliminate the need to run
separate systems for voice communication and data
transmission. And, with OpenSky, you won’t even
have to switch between radio modes to do both
simultaneously.
RS-232 Interface
For data transfers or graphics, your M-803 is
constructed with an industry-standard RS-232 interface
serial port for connecting an optional equipment
Mobile Data Terminal (MDT), laptop PC or third-party
display or key-entry device.
OpenSky works seamlessly with equipment from
popular manufacturers and off-the-shelf applications
through a standard UDP/IP protocol, providing you
with simple “plug and play” connectivity.
Suddenly and simply, the same M-803 you’ve been
using for voi ce conversation and tuning radio
frequencie s becomes the device you use t o view
photographs, maps or driving directions, generate
reports, access databases, in short to share any digital
file your job requires.
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Welcome to the OpenSky Networ k—CHAPTER 1
Multi-Agency Coverage
OpenSky is scalable and designed to accommodate a
virtually unlimited number of mobile and portable
devices from a single fleet, or even a complex network
made up of several cooperating agencies.
Examples of how OpenSky improves cooperation:
•Every truck in the FedEx fleet can share one large
national net wor k.
•Every cruiser in a state-wide police agency can
communicate with any other cruiser, from one end
of the state to the other.
•Patrolmen with older analog equipment can
connect seamlessly with newer digital devices over
the same network.
•Emergency response agencies share the same
network for improved communications during a
massive crisis.
•With an M-803 at the heart of your trunk-mounted
VTac Vehicular Tactical Network, your vehicle
provides off-network user-to-user communications
at the scene of an emergency.
Promotes Interagency Cooperation
In fact, the system is best suited to multi-agency public
See full discuss i ons of
Talk Group, Use r Gr oup
and User Profile el s ewhere in this manual.
Software Version OTP 5.07M-803 Operator Manual 5555
safety networks over areas as large as an entire state:
every cruiser, ambulance and fire truck and all their
dispatchers and support personnel sharing voice, data,
even graphics over the same network.
Talk to Anyone on the Network
Each user needs only one radio to connect seamlessly
to many independent agencies or cooperating dispatch
networks.
•There’s no need to monitor multiple frequencies on
several pieces of equipment to maintain contact.
CHAPTER 1—Welcome to the OpenSky Network
•User talk groups connect you at all times with
precisely the users you need to reach, no matter
who they work for, or where they’re located within
the networ k.
Connectivity with Legacy Equipment
The all-digital, end-to-end TCP/IP OpenSky Intranet
even provides support for legacy equipment and
protocols both digital and analog.
Along with supplying voice and data to your M-803
mobile radio, the network will also support existing (or
“legacy”) radio equipment you may still need to use
during a hardware rollover.
This also means you’ll be able to make radio contact
with cooperating agencies on the same network,
whether or not they have made the conversion to
OpenSky equipment, as long as they use their radios to
network with Open Sk y.
Voice and Data to a Single Devic e
With OpenSky, you won’t need independent system
For graphics, you’ll need
to remain connected to
your Mobile Data
Terminal (MDT).
architecture to receive voice and data communications.
And, with a Mobile Data Terminal connected through
the peripheral interface, you’ll have unprecedented
ability to send and receive forms, NCIC profiles, maps,
floorplans, all the complicated graphical data you need
to make informed on-the-job decisions.
Improved Coverage and Signal Strength
Part of OpenSky’s scalability is its ability to acco mmodate as many base stations a s your coverage area
requires for robust voice and data transmissions,
wherever your route may extend within the network.
Vehicular Tactical Network
VTac devices (trunk-mounted M-803 radios arrayed
with a duplexer and a vehicular repeater) and OpenSky
cell sites automatically extend coverage into otherwise
hard-to-reach areas.
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With a VTac device in your vehicle, you’ll enjoy
extended signal reach into buildings or behind barriers,
as well as repeater capability for off-network unit-tounit communications.
Background Roaming and Switching
Automated switching takes place in the background
with OpenSky, so you’ll no longer be required to scan
for an open channel, or wait for an available channel,
when you move thro u gh yo ur co ver a ge are a.
Instead of depending on choices from a central
Signal strength sensitivity
is user-modifiable to
reflect local conditions.
switching station, your radio itself constantly monitors
signal strength and makes its own decision to roam to
another base site for a more robust connection.
Chances are you’ll never know your unit has been
“handed off” to a new base station and automatically
assigned to the best available channel.
Better Peak-Time Performanc e
OpenSky’s digital trunking archite cture pro vides
enormous ad vantages over conventional FM operat ion.
Conversation capacity is effectively doubled by the
system’s ability to carry two voice-to-voice conversations over the same channel that was previously
dedicated to just one.
Welcome to the OpenSky Networ k—CHAPTER 1
TDMA Technology
The M-803 uses TDMA technology to allow multiple
users to share a single RF channel. In addition, a single
25kHz RF channel can support simultaneous digital
voice and data communications.
By doubling the capacity of each channel, the OpenSky
TDMA networ k relieves the pressure of he avy use
without additional channels.
The M-803 supports multiple voice groups, multi-level
priorities, priority scanning, dynamic voice group
assignment, pre-emptive emergenc y calls and optional
encryption.
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CHAPTER 1—Welcome to the OpenSky Network
Optional GPS Tracking
GPS tracking devices embedded in optionally-equipped
M-803 radios quickly and accurately locate users on a
visual display screen for dispatchers, virtually
eliminating the need for users to report their position.
With an overview of the locations of all vehicles,
GPS tracking uses a
small fraction of
system resources,
but eliminates verbal
location reporting for
huge overall
capability gains.
dispatchers have the information they need to assign
the nearest vehicle to a developing emergency.
By eliminating the background chatter of constant
location reporting, OpenSky frees up system resources
for more critical communications, especially at peak
traffic times.
Software-Configured Device
Your M-803 is a “soft” radio. Its functions are determined by OpenSky software applications, in much the
same way computer hardware is configured for
different applications.
Unlike older analog radios you may have used, with
their hardware-based proprietary functions, your
M-803 converts voice waves into digital information
before it transmits to the network, providing noise-free
audio transmission and reception.
What’s more, because each user in the network has a
Make any radio in the
system “your radio” by
logging on with your
identity code.
unique identity code, you can activate your identity
from any radio connected to the network. Any radio
from your agency’s hardware stockp i le can become
“your” radio and log on with your profile.
Multi-Mode Functionality
Finally, if you need to be multi-mode, your M-803
supports several (even several applications simultaneously) providing capability with the needs of
different user groups.
You can operate under the OpenSky digital protocol or
use the same device to access Conventional FM with
CTCSS analog FM or APCO Project 25 Phase 1
operations, depending on the user configuratio n of your
network or agency.
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Welcome to the OpenSky Networ k—CHAPTER 1
Analog-to-Digital Rollover
The M-803 can work with existing analog infrastructure to enable an essentially seamless transition to
fully digital communications
If your user group or another user group with whom
you communicate is making the transition from analog
to digital service over time, you’ll be able to use your
M-803 throughout the rollover by selecting the correct
mode.
What’s more, the M-803 is field re-programmable over
the radio channel to allow for future capabilities
without replacing the existing subscriber equipment.
•The principle operating mode currently in use is
the OpenSky Trunked Protocol (OTP).
•From the Mode Se l ection Menu, you c an also
access OpenSky Conventional FM (OCF) with
Continuous Tone Coded Squelch Syste m
(CTCSS).
•From the Mode Se l ection Menu, you c an also
access OpenSky Conventional (OCF) mode using
APCO Project 25 Common Air Interface.
Software Upgradeable
As with computer har d ware , your mob il e rad i o
equipment is upgradeable each time the OpenSky
software enables a new feature or operational
enhancement.
Communications protocols, radio features, and
protocols can be changed easily and transparently to
the user, during a shift or during “sign-on” at the
beginning of a new shift.
Enhanced Digital Features
The all-digital network and OpenSky’s digital trunking
See full discuss i ons of
User
Talk Group,
Group and profiles in
Chapter 2 of this
manual.
Software Version OTP 5.07M-803 Operator Manual 9999
features also enable a rich array of network enhancements unthinkable over historical FM broadcast
systems.
CHAPTER 1—Welcome to the OpenSky Network
Voice grouping (into talk groups, user groups, and
profiles) is probably the most obvious advantage to
individual users, but the interconnectivity of the
OpenSky network also enables a variety of essential
enhancements includi ng:
• Priority scanning
• Multiple priority levels
• Pre-emptive emergency calls
• Selective calls directly to User ID
• Late-entry calls
• Autonomous roaming for wide area applications.
You’ll benefit from high-quality, noise-free voice
communications with enhanced speech clarity
compared to analog, especially in noisy environments.
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Network Organization
Your Voice Feature Personality 12
User Groups 13
Profiles 14
Talk Groups 15
Listen Groups 15
Talkback Scanning 16
Radio Personality 16
Terminology 18
CHAPTER 2
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CHAPTER 2—Network Organization
Your Voice Feature Personality
When you activate your radio at the beginning of a
shift and sign on with your unique identity code, your
radio is assigned its IP address and “provisioned” with
a radio personality that identifies the other users on the
network with whom you are most likely to need to
communicate.
Some users you’ll only monitor, others you’ll want to
talk with during the course of your shift, just as with
older analog equipment you talked over one frequency
and monitored others to keep informed about the
activities of users in your agency, workgroup, task
force, fleet or geographic area.
Your overall radio personality is organized into User
Profiles are assigned by
your network admi ni strator to match your
communication needs.
You’ll have access only
to those users who fall
within your profile.
Groups (talk groups and listen groups), similar to a
channel in a conventional FM radio system. These user
groups are then organized into Profiles (collections of
up to 16 user groups), similar to banks of channels.
Finally, as many as 16 profiles make up your radio
Personality.
Only one profile is active at any time. Within that
profile, only one user group is your Talk Group; the
others are Listen Groups. So, while you have
tremendous capability to establish contact with a very
large number of users, you’ll need to select the profile
that puts you into voice contact with the talk group you
need at any time.
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User Groups
A user group is a set of users who regularly need to
communicate (all the officers in a state police barracks,
for instance, or all the drivers who work a particular
shift).
• In conventional FM radio broadcast systems ,
• In the IP-backbone OpenSky digital network,
With OpenSky, members of the same user group can
stay in contact regardless of where they roam within
the network, whether the network incorporates a single
county, a state, even the entire nation.
Dispatchers maintain contact with all members of the
Network capacity is the
only limitation on the
number of users that can
make up a group.
group, and each user can stay in “push-to-talk” contact
with the dispatcher and all the users in their talk group,
even if those users are from different, inter-networked
agencies.
Network Organization—CHAPTER 2
these users work together by tuning to the same
channel.
subscribers in a user group are connected by a bit
of data in the header of every voice or data packet
addressed to the members of the group.
The Figure below illustrates a small user group of four
M-803 mobile radios.
Figure 1 User Group
Sample Configuration
Each radio assigned
to an individual user
Nothing about this user group so far defines it as a Talk
Group or a Listen Group. That determination is made
when user groups are gathered together by the network
administrator into the larger groups called profiles.
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CHAPTER 2—Network Organization
Profiles
A profile is a set of up to 16 user groups. All sorts of
configurations are possible within this simple
architecture. Police officers on the same shift might
make up a profile, for instance. Within this profile,
each police station on the network might be assigned a
user group. So the profile would connect all the
cruisers from 16 stations for an entire shift.
Officers from each station would most likely be in
“push-to-talk” contact with one another; all other
officers on the same shift would most likel y monito r
the other groups for “listen-only” access to all other
calls within the profile. But this is only one possible
configuration.
A user group might just as easily include officers from
Members of a talk group
are not necessari l y
scanning the calls of the
same listen groups.
several stations: a SWAT team, for example, or a
special emergency task force might require the
collaboration of special personnel or equipment from
different police stations, or even other agencies.
•In conventional FM radio broadcast systems ,
users with this sort of relationship would create an
“ad hoc” profile by tuning to one channel for talkgroup privileges and scanning an entire bank of
channels to monitor the conversations of other
groups.
•In the IP-backbone OpenSky digital network,
members of the same talk group automatically
receive every voice message addressed to the
group, and monitor the voice messages of every
other user group in the profile.
Each user in the OpenSky network can be assigned as
Of the 16 available
profiles, Network
Administrators will often
reserve one for Dynamic
Regroup use.
many as 16 profiles by the network administrator. At
any time during a network session, users can select the
profile that suits their needs by using the front control
keypad to access the Profile Menu. If selected for
Dwell Display, the Current Profile selection will be
visible in the radio’s front panel display area.
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Talk Groups
Network Organization—CHAPTER 2
Figure 2 User Profile
Sample Configuration
User Group 1User Group 2User Group 3User Group 16
. . .
Talk GroupUp to 15 Listen Groups
While your active profile can contain up to 16 user
groups, only the primary group in any profile is your
Talk Group. All the other user groups in your profile
are listen-only groups. You’ll hear the calls from these
groups but they will not hear your voice unless your
user group is part of their profile.
To initiate voice-to-voice contact with a particular user,
you’ll have to select the profile that makes that user
part of your talk group. This is only possible if your
network administrator has configured a talk group that
contains both you and the other user.
If each of you has a profile that includes the other in a
talk group, you can each select the profile that puts you
into “push-to-talk” contact with the other. (Or one of
you can reply to the other in Talkback Mode.)
Listen Groups
All the other user groups in each of your up to 16
profiles are “listen groups”. See the User Profile
Figure above for an illustration of how user groups are
related in a profile.
By adding different listen groups to your several
profiles, your network administrator can change the
configura tion of the user groups you can monitor at any
time by making the appropriate choice from the Profile
menu.
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CHAPTER 2—Network Organization
You may only have one talk group, but that doesn’t
keep you from tuning in different profiles to monitor a
different “bank of channels.”
Talkback Scanning
While you cannot initiate contact with users in your
“listen groups,” you can reply to their incoming calls
using Talkback Scan mode.
With your radio in Talkback Mode, your display screen
will show the identity of your most recent incoming
caller. Press the Push-to-Talk button on your handset
and send your voice repl y.
Radio Personality
Your radio personality is a collection of up to 16
profiles. The entire personality is organized by your
network administrator and is unique to your
communication needs.
When you activate your radio at the beginning of a
If an emergency pr om pts
your Network
Administrator to enac t a
Dynamic Regrouping of
user groups, you’ll be
prompted to conduc t a
mid-shift log-on to reprovision your radio with
an updated personality that
includes a preprogrammed or a d hoc
emergency user pr o f i l e.
shift and sign on with your unique identity code, your
radio is assigned its IP address and “provisioned” with
a radio personality that identifies the other users on the
network with whom you are most likely to need to
communicate by voice.
Your overall radio personality is organized into UserGroups (talk groups and listen groups), similar to a
channel in a conventional FM radio system. These user
groups are then organized into Profiles (collections of
up to 16 user groups), similar to banks of channels.
Finally, as many as 16 profiles make up your
personality.
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Network Organization—CHAPTER 2
Figure 3 Radio Personality
Sample Configuration
Profile 1 (1 Talk Group and up to 15 Listen Groups)
. . .
Profile 2 (1 Talk Group and up to 15 Listen Groups)
. . .
...Profile 16 (1 Talk Group and up to 15 Listen Groups)
. . .
Radio personality architecture gives you tremendous
flexibility to organize your communications needs,
even as conditions change. Network administrators can
even create ad hoc work groups and profiles to respond
to emergent conditions, then prompt the affected users
to re-provision their equipment while the emergency
unfolds.
With 16 profiles you can participate in as many as 16
talk groups. Or, if you only need one talk group, you
can still have up to 16 different profiles that can add
more than 200 other user groups to your listen group
pool, each with an almost unlimited number of
subscribers.
Of course, with potentially hundreds of voice calls in
your profile at any time, you’ll appreciate the ability to
establish Priority Scan groups, or even Lock Out others
to help focus your incoming calls.
Software Version OTP 5.07M-803 Operator Manual 17
CHAPTER 2—Network Organization
Terminology
Most of the terms and concepts you’ll need to
communicate with your dispatcher, network
administrat or and other users have parallels in legacy
analog networks.
DigitalCompare to Analog
User Group .........
Profile..................
Talk Group .........
Listen Group.......
Profile..................
FM radio channel
Bank of FM radio channels
“Push-to-talk” connection with
users tuned t o the same channel
“Listen-only” connection to a bank
of radio channels
Talk privileges on one channel
while monitoring an entire bank of
channels
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