CTI Products EXB Network Manager - Manual (Page 5)

Hot-Standby EXB / Network Manager Software Manual System
CTI Products, Inc. Overview
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68-11707-100
1. System Overview
Hot-Standby EXB Network Extender Modules are used when added reliability is required
in monitoring and controlling remote comparators. They work with CTI Products' MCN
Monitoring and Control network. They provide a hot-standby dual path for the
monitoring and control data.
The EXB Network Management Software runs on a PC and monitors the status of the
Hot-Standby EXB modules and links. It provides the following functions:
• Status indication of EXB Modules
• Status indication of links between modules
Network Management PC
Router
A In
A Out
B In
B Out
EXB
Port 1
Port 2
Net In
Net Out
EXB
Port 1
Port 2
Net In
Net Out
EXB
Port 1
Port 2
Net In
Net Out
EXB
Port 1
Port 2
Net In
Net Out To CIBs
EXB
Port 1
Port 2
Net In
Net Out
EXB
Port 1
Port 2
Net In
Net Out
EXB
Port 1
Port 2
Net In
Net Out
EXB
Port 1
Port 2
Net In
Net Out To CIBs
Remote Site 1
Remote Site N
Central EXBs Remote EXBs
Redundant Path
Central MCN
Network1
Central Network Management Network
To MCN PCs
CA-80636-100
WAN Links
Remote MCN Tie
Central MCN Tie
To Additional To Local CIBs or Routers
Hot-Standby Channel 1
Hot-Standby Channel 2
Central Networks
Figure 1 Hot-Standby EXB System with Network Manager PC
Figure 1 shows a typical Hot-Standby EXB system with a Network Management PC.
It shows hot-standby channels to two remote sites. Not shown on the diagram are CIB
modules at the remote sites or the MCN Remote Comparator Display (MCNRCD) PCs.
The figure shows a Network Management Router. These routers are used in large
systems that have multiple MCN networks. In these cases, the Network Management PC
sits at a higher tier than the MCNRCD PCs and manages all Hot-Standby EXB modules
that feed its MCNRCD PCs. In smaller systems with only one master central network,
the Network Management router is not needed.
Figure 1 shows Serial EXB Modules with two ports each. The system could contain a
mix of Serial and Analog (Telco) EXB modules, depending upon the WAN links
available to the remote sites. Analog (Telco) EXB Modules have only one port each. The
second port on Serial units may only be used at the Remote side.