Question

What is the full form of FITL ________

(a) Fiber Input Timing Loss

(b) Fibre Impedance To The Loop

(c) Fiber Input Timing Loop

(d) Fiber In The Loop

I have been asked this question in examination.

This interesting question is from Noise in Pulse Modulated System in portion Phase Locked Loop & Pulse Modulation of Analog Communications

Answer 1

Correct answer is (d) Fiber In The Loop

For explanation: FITL stands for Fiber In The Loop. It is a system used to upgrade PSTN (Public Switched Telephone Network) network Local loop. PSTN consists of all circuit-switched telephone in the whole world.