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Tianjin is located in northern coastal China, the customer needed to network the matrix systems within those centers in order to share all the video sources. The available infrastructure offered just one single-mode fibre and the transmission distances extended to 70km. To complicate things further, the transmission requirement was complex and high volume: three sub-control centers transmitting and one sub-control centre transmitting. Whilst a number of companies were invited to test in the field, only the KBC solution was capable of handling the high volume and complexity of traffic reliably. The solution used CWDM (Coarse Wavelength Division Multiplexing) to increase the signal density and offered 8, 4U chassis-mount ASFOM units to give the greatest degree of flexibility over the limited fibre available.
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