1. Describe the parts of the local loop in detail.2. What are the three main features of the telephone system and what are they responsible for?
3. What advantages and disadvantages does a circuit switched network have?
4. How might delay and especially variable delay be bad for an international telephone call?
5. Describe three messages/signals you might
get when your telephone call cannot be completed.
6. You are a traffic engineer. You are redesigning a trunk group that currently supports 96 simultaneous calls. the trunk group is now reaching maximum
capacity and future resources have to be added.
a) If the demand for resources is growing 15% per year and you wish to install cable plant that will provide adequate support for the next 9 years, how many trunks would you need to add to the current trunk group?
b) How many T1 lines would you add to make sure you could support the expected demand above?
c) How many trunks would be needed if growth was 35% per year?
