Question

Telecommunication Networks and Security:

a) Sketch the hierarchy of the telecommication infrastructure.

b)Explain the differences between data switches and data hubs.

c)What is a local loop?

d)What is signaling system used nowadays for PSTN?

Answer 1

1) The hierarchy of the telecommication infrastructure.

2) In data hub the data transmission is in the form of elctrical signals or bits
In data switch the data transmission is in the form of frames and packets . i.e frame (L2 switch) , frame and packets (L3 Switch)

3) Local Loop: The wire connection from the main telephone office to its local customers at home or businesses.

The local loop conncetion is usually on a pair of copper wires called twisted pair.

4)Signaling System 7 is an international telecommunications standard it defines on how the network elements in a PSTN swap information over a digital signaling network. The Nodes in the Signaling System network are called as signaling points.