DEDICOM

For additional protection, the main locations are equipped with a satellite link providing a secondary connection in case of a fiber breakdown.

System Description
The network consists of two interconnected point-to-point links, one main link and one extension link. To maintain a high level of network redundancy, our design is based on a “collapsed ring” solution enabling use of SNCP protection in the backbone SDH network. The present Fibre Optical SDH backbone network operates at STM-1, serving the Primary Multiplexer network at 2 Mbit/s.

For additional protection, the main locations are equipped with a satellite link providing a secondary connection in case of a fiber breakdown. The primary multiplexers contain various voice frequency and data interfaces, whereby the PCM backbone network serves the data acquisition units (RTU I/O) that interface directly to the SCADA management located at the pipeline control centre.

To provide a Local Area Network (LAN) interconnection between the main stations, the SDH backbone network is equipped with integrated 10/100Mbit/s Base-T Ethernet interfaces. Another function of the interface is support for a possible upgrade to CCTV surveillance with integrated access entry in un-manned pump and valve stations. Monitoring and control of the backbone and telemetry network is managed by a network management system, situated on an open architecture platform, achieving a flexible and future proof system.

Services
Since the contract was for complete systems supply, the implementation phase included: 

• Project management to ensure efficient traceability and quality. Successful Project Management is carried out by using the neccessary proven project management tools, such as the project specification containing the statement of work, breakdown structure, time schedule and budget breakdown, as well as procedures linking requirements and performance. These parameters are closely coordinated with the customer during the project implementation period.
• Integration and testing of the entire network in the factory. By means of a Factory Acceptance Test with the customer, the system performance is verified as fulfilling all the specified parameters defined during the design phase.
• Installation Test and Commissioning. Bringing the equipment to site and doing the interfacing to the local subsystems.
• Final testing and commissioning of the full system - after revising the documentation to be as-built - and approval by the customer before hand-over.