Modern networks usually require WAN connectivity at speeds higher that T1/E1 or T3/E3. Optical connections that come directly into data centers represent a valid alternative that can offer increased bandwidth. This is also called synchronous optical networking because a lot of digital signals can come over a single fiber into the customer’s facility. This means that you do not need to have separate connections to carry different services.
The digital signals transmitted over the fiber are multiplexed and the connection is called synchronous because the signals are using the same clock over the connection, regardless of the . . .
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