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MOTORQLA
SOLUTIONS
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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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Use or disclosure of this proposal is subject
S5/2018 to the restrictions on the disclosure page. Page 8
