Such an overlay approach relies on a simple, passive and inherently 100% interoperable approach that offers reliable operation across all contemporary DWDM and 40G Base-LR4 / ER4 and 100G Base-LR4 / ER4 transceivers and optical transport interfaces. Introducing discretely independent channels via different (or similar) transmission protocols and data rates relieves fiber exhaust in practically all legacy LRF infrastructures quickly and cost-effectively. The Network Cube optical layer multiplexing family of solutions from Cube Optics are proving a low cost and straightforward means of adding needed bandwidth while preserving continuous and unencumbered operation of revenue generating legacy services.
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