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Note: This channel pairing provides an alternate interface in case of a failure.

Additionally, Main/Alternate Channel Pairing provides the ability to have a main and alternate base station. The
channels comprising the Main/Alternate Channel Pair may be at the same or different RF or console sites.

1.7
1.7.1 Core Site

The Core Site is the central point for all system traffic. Call processing and system management occur at the Core
Site. Centralized management helps you fine tune network performance, minimize costly field visits, and keep the
system running with minimal effort from your administrative staff. The core site includes one or two Conventional Site
Controllers that maintain communication between the consoles, RF Sites, Simulcast Sites and subscriber radios for
voice processing.

Note: Data calls are managed by the Packet Data Gateway (PDG).

The Redundant Configuration offers the added reliability of redundancy. The site controllers, site gateways, core LAN
switches, and backhaul switches are redundant in this configuration, thus eliminating single-point-of-failure outages.
At the Redundant Core, redundant GGM 8000 Site Gateways support only a single-functional role as a site gateway
device,

1.6 NETWORK TRANSPORT SUBSYSTEM

The ASTRO 25 transport subsystem is engineered to meet the performance requirements of a real-time system
transporting voice, call control, network management, and ancillary network services. The Transport Network is a
closed network.

Note: Only Motorola Solutions supplied equipment, applications, and services can be used on the core and site networks.

IP encapsulation across the customer-provided backhaul network transports Radic Network Interface (RNI} traffic.
The Wide Area Network (WAN} Transport can optionally provide encryption, as well as redundant links. In addition,
Quality of Service (QoS) can be used to distribute voice packets to provide a constant and steady delivery of packets
from the source to the destination.

° The Enterprise Ethernet Switch (LAN Switch) — Aggregates all the Ethernet interfaces for all servers,
clients, and gateways.

¢ The Core Gateway — Interfaces to the core LAN, providing layer three routing and protocol conversion
between the core IP devices and the remote site IP devices.

° The Site Gateway — Interfaces to the remote site LAN via one Ethernet connection, and provides Layer
three routing and protocol conversion between the remote site IP devices and the core site IP devices.

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1.8.0.1 GCP 8000 Conventional Site Controller
The GCP 8000 Site Controller provides
mission-critical call processing and
mobility management throughout the
ASTRO 25 Conventional System. The
GCP 8000 interfaces through the
Ethernet LAN switch, providing access
to the packet switched network
through the Core Gateway. Equipped
with a single controller module, the
GCP 8000 can support the full set of dispatch consoles, archiving interface servers, and conventional gateways.

1.8.0.2 GG 3000 Gateway

The GGM 8000 core gateways provide routing control of audio, data, and network management traffic for devices
that forward packets beyond their local LAN. The gateways replicate packets while achieving the fast access levels
required by real-time voice systems.

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GGM 8000 Gateway — Provides routing control of audio, data, and network management traffic for
devices that forward packets beyond their local LAN.

Note: Redundant gateways have been provided in the proposed system design.

1.8.0.3 Enhanced GGM 8000 Conventional Channel Gateway

Enhanced Conventional Channel Gateways (ECCGWs) connect dispatch operators to analog or digital conventional
channels in the system. Up to 16 conventional channels can be connected to the eight analog and eight V.24 ports on
a GGM 8000-hased ECCGW in any mixture of analog, MDC 1200 digital or mixed mode.

In addition to the 16 channels supported on the analog and V.24 ports, the ECCGW can support up te 16 digital
conventional channels through its IP port. Mixed mode channels must use a V.24 port for the digital portion.

Enhanced GGM 8000 Conventional Channel Gateway - Connects dispatch operators to analog or digital
conventional channels in the system.

1.8.0.4 LAN Switches
The Core site equipment includes one or more LAN switches. The LAN switches aggregate all the Ethernet interfaces

fer all servers, clients, and routers at the core.

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1.8.0.5 Radio Frequency Distribution System

The Radio Frequency Distribution System (RFDS} provides interconnect between the base radios and antennas,
allowing for a completely contained and more compact installation footprint. For the transmitters, this can include
isolators, combiners, TX filters, diplexers, and power moniters.

For the receivers, this can include duplexers, site preselectors, and multicouplers. Various RFDS options exist for
each of the GTR 8000 Base Radio, GTR 8000 Site Subsystem, and GTR 8000 Expandable Site Subsystem.

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SECTION 2

MCC 7500 DISPATCH CONSOLE

Motorola Solutions, Inc. (Motorola Solutions) proposes our MCC 7500 dispatch console to provide The Nashua/
Manchester, NH Dispatch Center with the confidence of state-of-the-art communications, console management and
configuration functionality, dispatch operation, and communications security. Motorola Solutions designed its MCC
7500 console to help reduce the total cost of owning an IP-based, feature-rich dispatch system without
compromising quality and reliability. The MCC 7500 dispatch console will provide The Nashua/Manchester, NH
Dispatch Center with a scalable, flexible system architecture, sophisticated network management and security, and
an easy migration path to future capabilities.

2.1 MCC 7500 CONSOLE CONFIGURATION FOR THE NASHUA/
MANCHESTER, NH DISPATCH CENTER

The proposed solution offers The City's of Nashua and Manchester 4 MCC 7500 dispatch conscle[s] that will
interface seamlessly with The City's of Nashua and Manchester ASTRO® 25 system. A total of 4 operator positions
will be located across Back-Up EOC locations.

2.2 EMBRACING INTEROPERABILITY AND INTEGRATION

Motorola Sclutions has been an active participant in establishing P25 standards for interoperability, and the MCC
7500 console is a key component for the interoperability of Motorola Solutions’ ASTRO 25 system. When a situation
requires coordination between multiple agencies, the MCC 7500 dispatcher can patch together Mutual Aid radios
and required subscribers on the ASTRO 25 system (see the figure titled "Mutual Aid Components’). Incident
conversations are seamless from the moment of the patch initiation, and can be recorded like any talk group
conversation within the Land Mobile Radio (LMR) network. The dispatcher can also take part in and monitor
conversations for the duration of the incident, as necessary.

2.2.1 Integration with the ASTRG 25 Network

The MCC 7506 IP dispatch console will be seamlessly integrated into The City's of Nashua and Manchester ASTRO 25
system, without interface boxes, digital voice gateways or backroom electronics, for an integrated mission-critical
network. This tight union between radio infrastructure and dispatch console equipment has several operational
benefits to The Nashua/Manchester, NH Dispatch Center. The physical space needed to accommodate the MCC
7500 dispatch console position is comparable to that required for a personal computer. Both trunked talkgroups and
conventional radio channels can be accessed and controlled from one MCC 7500 IP dispatch console over the same
network. This architecture reduces overall transport costs and the need for duplicate fixed network equipment.

2.2.2 Connection to ASTRO 25 System

The flexibility of the ASTRO 25 system architecture allows the connection of the MCC 7500 tc be suited specifically tc
The City’s of Nashua and Manchester needs.

2.2.2.1 LAN Switches
The site LAN switches provide LAN interfaces for dispatch site equipment and a LAN port for the link to the core site.
Through the switch, service technicians can access the system's configuration manager and service the equipment.

2.2.3 Conventional Base Station Interfaces

The MCC 7500 consoles will access and control The City's of Nashua and Manchester analog and digital
conventional base stations through the use of conventional channel gateways (CCGW). The dispatch console
processes audio received from the station, and controls various features on the stations, such as frequency

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selection, private line selection, and repeater on/off. Additionally, the Enhanced CCGWs allow for recovery of MDC
1200 and digital signaling, such as unit ID, and emergency alarm, which is passed to the MCC 7500 dispatch operator
position(s).

2.3 MAKING CONSOLES EASY TO OPERATE

Motorola Solutions designed its MCC 7500 dispatch console to provide mission-critical audio between the dispatcher
and users in the field. Itis optimized for real-time audio, prioritizing emergency calls over other traffic, and minimizing
voice queuing. Using robust error mitigation to maintain call quality even when the system is heavily loaded, the MCC
7500 console reduces communication errors that may force dispatch console operators to repeat their
transmissions.

2.3.1 Customizable Dispatch Interface

The MCC 7500 console provides dispatch operators with a graphical user interface (GUI) that can be customized by
agency or by individual user to optimize user efficiency. Based on dispatcher preference, the MCC 7500 GUI can be
customized to show details of trunked and conventional RF channels on a per-channel basis. Busy dispatchers can
respond to a missed call by simply clicking on an entry in the Activity Log. The number of calls and call information
displayed in the Activity Log is customizable to suit the needs of the user. The status of auxiliary inputs and outputs
can be easily interpreted from the GUI with the use of familiar graphical icons, such as a door shown open or closed.

2.3.1.1 Elite Dispatch Graphical User interface

The MCC 7500 Elite Dispatch GUI is an enhanced version of Motorola Solutions’ Gold Elite Dispatch GUI. For existing
Gold Elite users, the GUI allows a smooth transition and minimal training for radio dispatch operators. For new users,
the graphical icons and customization options make the MCC 7500 console GUI easy tc learn and operate.

2.3.1.2 inbound Event Dispiay

For those users who prefer a call-based GUI, the MCC 7560 dispatch console supports the Inbound Event Display
(IED) GUI. The IED GUI displays incoming radio events in a queue format. The dispatch console user can manage and
respond to these events directly from the queue. Filtering and sorting features are available to allow the information
in the queue to be tailored to the needs of the dispatch console user. The console can be configured to operate in
“quiet mode” when using the IED GUI. This is well suited to customers who operate in a Request-To- Talk (RTT)
environment.

2.3.2 Standard Radio Transmission and Reception

A typical MCC 7500 console has a headset and two speakers, one for selected audic and the second for all remaining
unselected audio. Additional speakers can be added to the console, allowing dispatch operators to configure a
specific speaker for a set of designated audio sources. This simplifies multitasking between multiple audio sources,
allowing flexibility in the way the audio is presented to the dispatch operator.

2.3.2.1 Receiving Calls from the Field and Other Dispatch Operators

The MCC 7500 provides dispatch operators with great flexibility for how to hear calls from field radio users and other
dispatch operators. Each console dispatch operator can define his or her own audio reception profile by selecting a
single audio source, whether conventicnal or talkgroup, to be heard on a selected speaker or headset (“Single
Select”). The dispatcher can also define groups of radio resources that can all be heard on a selected speaker or
headset (“Multi-Select”).

2.3.2.2 Initiating Calls to the Field and Other Dispatch Operators

The dispatch operator has several different ways of initiating a call. In most circumstances, a “General Transmit” is
appropriate. With the general transmit, the dispatch operator selects a resource on the console and activates the
transmission through a footswitch, headset transmit button, or a microphone transmit button. If the dispatch operator
needs to quickly transmit on a resource that is not selected, the dispatcher uses the “Instant Transmit” function. An

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“Instant Transmit Safety Switch” prevents accidental activation of functions that may cause negative consequences.
The safety switch can be used with Aux I/Os and pre-defined pages, as well as, instant transmit switches.

2.3.2.3 Audio Communication te the Field and Other Dispatch Operators

The dispatch operator can transmit audio in different ways. They can make calls to all users listening to a specific
conventional radio resource or a specific trunking talkgroup. When multiple resources are required, the dispatcher
can select additional talkgroups and/or conventional channels, as needed, using the multi-select feature. The MCC
7500 console also enables dispatch operators to make private calls to individual field radio users or dispatch
operators. Once a private call is established, it can be patched in with another resource at the dispatch operator's
discretion.

2.3.2.4 Controiling Console Audio
The MCC 7500 console offers dispatchers several different ways of controlling or muting the audio on their consoles:

2 Audio volume can be changed for any specific resource.

* Allnon-selected resources on the console can be muted for 30 seconds (“All Mute”) or unmuted, if already
muted.

° Adispatcher can transmit on a resource while receiving audio from the same resource or other resources.

* Adispatcher can mute the other dispatch audio on a shared resource to prevent acoustic feedback when a
co-located operator position transmits.

2.3.25 Cortrofling Hetwaork Audio

Dispatch operators can control the audio on the ASTRO 25 network. Using the console, the dispatcher can enable or
disable radio users in order to compartmentalize traffic, reduce interruptions, and maintain communications between
dispatch and the field. When this function is enabled or disabled, all dispatch consoles with this resource assigned
are updated with the current status of the feature.

Note: This feature can be controlled from any dispatch console.

2.3.3 Emergency Radic Transmission and Reception

As part of a mission-critical communications network, the MCC 7500 console will facilitate immediate prioritization
and resolution of emergency communications between The City's of Nashua and Manchester dispatch and first
responders in the field, enabling dispatch operators and first responders to focus on their mission, not their
equipment—especially during critical situations.

2.3.4.1 Receiving an Emergency Call

When a field user or another dispatch operator initiates an emergency call, the console emits both visual and audible
indications ("Emergency Alarm”). The audible indication alerts the dispatch operator that an emergency is
underway, the visual indication directs the dispatch operator's attention to the specific resource making the
emergency call. The dispatch operator can immediately reserve a voice channel for the duration of the emergency.

2.3.3.2 Responding to an Emergency Call

A dispatch operator can bypass the standard console interface to auto-open a quick list, which contains specific
controls for recognizing an emergency call, initiating an emergency call, and ending an emergency call (“Auto-Open
of Quick List”). The dispatcher can then “recognize” the emergency call, which ends the audible emergency
indication and notifies all dispatch operators that the emergency is being addressed (“Emergency Recognize”).

The audible emergency indication may also be muted by a dispatch operator without recognizing the emergency
alarm (“Mute Tones at a Single Op”). This would be used in a situation where one agency is monitoring a channel
that belongs to ancther agency. That channel can be configured to not generate audible and/or visual emergency
indications.

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2.3.3.3 Ending an Emergency Cail

When an emergency is over, the dispatch console user can end the Emergency Alarm. The visual indication on the
console GUI is removed, and the console informs the other operator positions that the emergency is over
(“Emergency End/Knockdown”). The emergency mode remains active on the initiating radio unit until it is ended
(reset) by the radio user.

2.3.4 Radio Patch Control

MEC 7500 console users can patch communication between trunked and/or conventional radios that are normally
unable to communicate with each other due to different features, programming, or even different frequency bands. A
patch group is a group of linked resources that can both receive messages from a console and transmit to all other
members of the patch group.

2.3.4.4 Setting up a Standard Patch

Patches are supported between trunked resources and/or conventional resources. After the patch is created, the
dispatch console transmits all audio on one resource to all other resources in the patch group. In a patch between
trunked resources, patched radio users with displays see the ID or alias of the other patched radio(s), as opposed to
that of the console. This minimizes confusion and the need for the dispatch operator to intervene in the call. Patches
are automatically re-established if interrupted, so the MCC 7500 user can concentrate on continuing operations.

2.3.4.2 Pre-Defined Patches
Patches can be pre-defined and automatically re-initiated each time a dispatch console computer is restarted
("Patch Auto-Start”).

2.3.5 Call Management and Control

2.3.5.1 Automatic Prioritization of Calls

Calls on the MCC 7500 console are prioritized through a transmission hierarchy. Calls from primary supervisors take
priority over those from secondary supervisors, which in turn take priority over non-supervisors. Instant Transmit or
All-Points Bulletin (APB) transmissions, regardless of whether they are from a supervisor, take priority over general
or patch transmissions.

Multiple dispatch console operators can be designated as primary supervisors on the same system, which is useful
when multiple agencies share one system. With the Network Manager Client installed, console supervisors can
disable and enable operator console functionality as needed.

2.3.5.2 Nianuai Prioritization of Calls

“System Access Priority Select” allows a dispatch operator te prioritize trunked resources on the system as either
“normal” or “tactical.” A dispatch operator can change the priority of a trunked resource to tactical to give the
resource a better chance of gaining communication access on a busy system. Only emergency calls have a higher
priority than tactical. When the System Access Priority status of a resource is changed, itis updated at all dispatch
consoles in the systems that are monitoring that trunked resource.

2.3.5.3 Using the Niulti-Select Feature

The Multi-Select feature allows a dispatch console to define groups of selected radio resources. When a Multi-
Select group is opened, all of the resources in the group are simultaneously selected. Resources can be added or
removed from a Multi-Select group while it is cpen or closed. The dispatcher can transmit on several resources
simultaneously or can listen to multiple resources simultaneously in their headset or select speakers.

2.3.54 Standard Call Indications
The MCC 7500 console indicates the availability of any given resource, regardless of whether the resource is
involved in a transmission. An inbound call indication provides the dispatch operator with a visual cue of audio

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activity on a radio resource and allows a dispatcher to see at a glance what the status of a resource is at any
moment.

2.2.9.5 Calf Alerting

A dispatch operator can “page” an unattended radio or console through a series of beeps and an indication of the
sender's ID. When available, the radio user or dispatch operator will see the unit ID of the calling dispatch operator's
console or radio ID and be able to return the call. Additionally, a Call Alert can be used to trigger an activity. For
instance, a Call Alert may cause a vehicle’s horn to sound and its lights to flash. The dispatch cperator can even
send a call alert to a user who is involved in voice and data communications over the network.

2.4 PROTECTING CONSOLES AND COMMUNICATIONS

The MCC 7500 dispatch console enables end-to-end encryption from the operator position to the ASTRO 25 network,
so that The City's of Nashua and Manchester communications will not be undermined by unencrypted transmissions.
Each dispatch operator will be able to fully participate in secure communications while being confident that
sensitive, vital information will not be heard by unauthorized individuals.

2.4.1 Secure Access to the Console

To use the dispatch console, a dispatch operator must enter a valid radio system user account name and password.
The dispatch console validates that information with the radio system's network manager and allows the user to
access only the resources for which the user has access rights. This also applies te third-party applications that use
the dispatch console's API.

2.4.2 Secure Communications at the Console

The console encrypts and decrypts radio veice messages. Thus, radio voice messages are encrypted end-to-end,
from the field radio user to the dispatch console. The dispatch operator can choose whether to encrypt their
transmissions on a particular trunked resource. Dispatch operators can interface with agencies that have different
encryption configurations without any manual intervention or delay. The MCC 7500 console can support up to 60 calls
simultaneously, using up to four different algorithms and multiple encryption keys.

2.5 INCORPORATING CONSOLE CONFIGURATION AND MANAGEMENT

The MECC 7500 console system is configured and managed by the same configuration manager, fault manager, and
performance reporting applications as the radio system. The user can define exactly which resources are available
and how they are presented to the dispatch console user. This will provide The City's of Nashua and Manchester
with a single point for configuring and managing the entire ASTRO 25 system. Changes are automatically distributed
throughout the system. This centralized approach saves valuable time and effort for system administrators and
technicians, and reduces the errors that can occur when radio IDs and other data are entered at multiple locations.
In addition, call traffic and performance reports for each console can be generated from the system's network
manager, enabling administrators to quickly and easily ensure optimal effectiveness and efficiency.

2.6 MCC 7500 DISPATCH CONSGLE COMPONENT DESCRIPTION

An MCC 7500 dispatch IP console comprises the following elements:

* Qperator position computer.

* Voice Processing Module (VPM).

* — Auxiliary Input/Outputs.

« Logging equipment.

e Network equipment.

@ Conventional Channel Interface equipment.

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The MCC 7500 components are connected together and to the rest of the ASTRO 25 system on an IP network through
console site rauters and switches. The MCC 7500 dispatch console functions as an integrated component of the total
radio system, fully participating in system-level features such as end-to-end encryption and agency partitioning.
Since the network is IP-based, the system's interfaces and components can be distributed physically throughout the
network. Some of the available console components are identified below:

2.6.1 Operator Position Components

MCC 7500 dispatch operator positions connect directly to the radio system’s IP transport network without gateways
or interface boxes. Audio processing, encryption, and switching intelligence for dispatch are performed within each
software-based operator position, without additional centralized electronics.

« Headset Jack — Each dispatch console can support up to two headset jacks. A headset jack allows a
dispatch console user te use a headset while operating the dispatch console. Each headset can either be
connected to the console for supervisory applications or to a desk telephone. The equipment design
proposed includes two headset jack(s) per operator. The headset jack contains two volume controls to
adjust the level of received radio audio and the level of received telephone audio.

* Headset Base — The Headset Base comprises an audio amplifier, a push-to-talk switch and a long cord with
a PJ7 long frame connector at the end.

° Headset Top — The Headset Top comprises the earpiece(s), microphone, and a cable that connects to the
Headset Base.

* Gooseneck Microphone — The dispatch console supports a desktop microphone that controls the dispatch
console's transmit and monitor features through two buttons on its base. The microphone can be fastened
down or left loose and can be used alone or with a headset

¢ Footswitch — Each dispatch console can support a dual pedal footswitch. The footswitch controls the
general transmit and monitor functions.

2.6.2 Instant Recall Recorder Port (for Radio)

The instant recall recorder port (for radio) allows an instant recall recorder to be connected to a dispatch console.
The port provides an output containing the receive radio audio on the selected channels. Transmit audio of any type
(from either this dispatch console or a parallel dispatch console) as well as tones generated by the dispatch console
(emergency tones, callback tones, busy tones) are not included in the audio output. This recorded audio is retained
by the recording system for a short period (typically about 60 minutes) and is easily played back by the dispatch
console user.

2.6.2.1 Telephone/Headset Port

The telephone/headset port allows an external telephone set to be connected to the dispatch console. The dispatch
console’s headset can then be used to communicate on both the radio system and a telephone system (that is, a 911
system).

2.6.2.2 Personal Computer (PC)

The MCC 7500 dispatch console uses an off-the-shelf personal computer, running the Microsoft® Windows operating
system. The PC has a minitower form factor, comes with a keyboard and mouse, and supports a variety of monitors
including both touch and non-touch operation.

2.6.3 Conventional Channel Gateway Equipment
An Enhanced Conventional Channel Gateway (ECCGWs) provides the interface for analog and ASTRO 25

conventional channels to the ASTRO 25 radio system infrastructure. The ECCGW can support combinations of
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analog, MDC 1200, ACIM Link, digital and mixed mode channels simultaneously. An ECCGW may also be used in
combination as a console site router or an RF site router, provided the WAN link is not redundant.

7.6.3.1 IP Conventional Gateway
ECCGWs can support up to 16 G-Series-based ASTRO 25 conventional channels through the radio system's IP

network. The IP interface uses the same Ethernet cable that the ECCGW uses for everything else. The 16 |P-
connected channels are in addition to any analog or V.24 channels that may also be connected to the ECCGW.

7.6.3.2 Conventional Site Controllers

The conventional site controller allows dispatch console users to continue to access and control local conventional
channels if connectivity to the radio system’s zone controller is lost. This mode of operation is often called “fallback
operation” or “site conventional operation.” While in fallback operation, the dispatch consoles continue to support
the vast majority of their capabilities and features. Only one conventional site controller is required per console site
or conventional subsystem. This single conventional site controller can support the full set of dispatch conscles,
archiving interface servers, and CCGWs in a console site or conventional subsystem.

System Diagram

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