Answer

Optical transport network (OTN): How big a step is it, really?

Is optical transport network (OTN) a major shift in technology or a step in transition to IP networks? Why would we need a step?

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Optical transport network is a transition technology to enable legacy time-division multiplexing (TDM) services to continue at high bit rates. Those service providers whose traffic is still about half-TDM will likely migrate slowly and use OTN as a stepping stone. Those will higher IP traffic will likely not use OTN.

This was first published in June 2011