| APC-Celeron:
Monitoring of a fiber-optic
transmission system |
| The recent growth of global marketplaces has triggered the rapid expansion of communications networks. For the network operators, most important is that the transmission system is available in its entirety and that it is reliable. Having implemented systems for cable, fiber-optic, wireless and sub-sea communications applications, Arcom has amassed a vast amount of relevant experience with respect to this emerging market, and the application note below outlines a typical use of Arcom's system expertise. |
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The Requirement
Our customer needed to provide the network operator with an integrated control and monitoring system that would provide surveillance over the entire fiber backbone with systems installed at each repeater station. This involved monitoring a wide range of sensors and alarms, as well as offering ethernet routing and voice communications capability through the system. With reliability very much a pre-requisite, the system could not be fitted with any electromechanical disk drive assemblies, and all power was to be derived from the standard telecom system's -48V. |
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Hardware
Architecture
Given the communications interfaces to be integrated, and the multi-tasking nature of the application, Windows NT was the obvious choice. Through careful configuration Arcom was able to store this within a 128Mbyte flash memory device.
The Hardware architecture is shown below-
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Software
Architecture
Arcom's standard Windows NT driver tools were used to develop the control application, and this integrated easily with the drivers and networking tools provided with the communications interfaces:
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Network Topology
The diagram below shows a section of the network, together with two of the fiber repeater stations. For this network, more than 100 repeater stations are integrated into the system: |
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