Three types of synchronous time division multiplexing that are popular today are T-1 multiplexing, ____ multiplexing, and SDH.

Three types of synchronous time division multiplexing that are popular today are T-1 multiplexing, ____ multiplexing, and SDH.

Three types of synchronous time division multiplexing that are popular today are T-1 multiplexing, ____ multiplexing, and SDH.



a. EIA-232F c. SONET
b. IPS/SPX d. RS-232


Answer: C


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