Problem
1. You want to start your own local telephone company. Do you have to install your own telephone lines to each house and business? Explain.
2. What type of telephone service do you use to connect a PBX to a central office if you want to allow 40 users to dial out simultaneously?
3. If you install a 56-kbps modem in your computer and dial in to a remote network that has only 33,600-bps modems, is your modem useless? Defend your answer.