problem 1:

The subscriber loop of 18km is to be supported from the exchange which uses a 40 V battery with 400 short-circuit protection resistance. Electronic telephones are employed as the subscriber instruments. Find out the wire gauge that needs to be used.

problem 2:

Illustrate out in detail about telecommunication network topologies?

problem 3:

What do you understand by the term SPC? Illustrate the two (2) approaches to organize SPC.

problem 4:

Deadlock might take place in the road traffic junction. Demonstrate this with the aid of diagram.