Telecommunication transmission systems continue to evolve towards higher data rates, increased wavelength numbers and density, longer transmission distances and more intelligence. Further development of dense wavelength division multiplexing (DWDM) and all-optical networking (AON) will require ever-tighter monitoring to assure an agreed quality of service (QoS), characterized by network availability and bit-error rate (BER). However, it becomes complex with traditional methods when applied in next generation networks. For the purpose of obtaining information quickly and accurately in future transmission systems, new monitoring schemes need to be developed and deployed. The paper provides a view of next generation monitoring requirements, business drivers as well as performance monitoring techniques, potentially applicable as next generation performance surveillance methods.
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