Product FAQs

Before You Buy

What do I need to know about upstream and downstream SFPs?

Upstream and downstream SFPs function the same way as other SFPs, except that they use Wavelength-Division Multiplexing (WDM).  WDM allows for the transmitting and receiving signals to co-exist on the same fiber strand.  This allows a single fiber cable strand to simultaneously transmit and receive a signal.

You must use upstream and downstream SFPs in pairs.  You cannot use two upstream or two downstream SFPs together.  

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