Latest speed of signal through a fiber optic and DSL ?

13 October 2020 1 8K Report

Can anyone tell what the signal traveling speed in fiber optic and DSL cable?

e.g., Like how much time an electrical signal will take to reach around 290 to 500 km.

I am looking for a delay in the time caused by traveling through 300 to 500 km through any DSL or fiber optic cable or the communication line used by electrical utilities with the transmission line.

Sultan Mahmood Yasir

vacuum is 299,792,458 meters per second. In normal optical fibers (silica glass), light travels a full 31% slower. 206,856,796 meters per second in optical fiber

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