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The MSO comprises a single rack with core (voice only) elements with six optional sub-system
elements. The sub-system options are not available with the basic system.
Core elements:
• Combined Zone Controller (ZC) and Network Management (NM) Server. Comprises:
◦ Zone Controller to control of all signalling, air-interface resources and telephone. Processing mobile station and group affilliations.
◦ Air Traffic Router (ATR) receives and broadcasts Air Traffic Information
Access (ATIA) packets.
• Core LAN Switch – used to interconnect all of the ethernet interfaces for
all servers, clients and routers.
• Core/Gateway Router (CR/GWR) – the CR routes traffic out to the sites.
• Cooperative WAN Routing Relay Panel.