Quiz in Wire and Wireless Communications System
Question 401. The class of switching office that provides service to small groups of class 4 offices within a small area of state.
Question 402. It eliminates the echo by electrically subtracting it from the original signal rather than disabling the amplifier in the return circuit.
Question 403. A mandate that requires all telephone companies to support the porting of telephone number.
Question 404. A signal sent from the switching machine back to the calling station whenever the system cannot complete call because of equipment unavailability.
Question 405. It is a sudden, random change in the gain of the circuit resulting in a temporary change in the signal level.
Question 406. ____________ is the switching system that is a branch of the local central office.
Question 407. A device that serves as a demarcation point between local telephone company responsibility and subscriber responsibility for telephone service.
Question 408. The first computer-controlled central office switching system used in PSTN.
Question 409. The final length of cable pair that terminates at the SNI.
Question 410. Acknowledgement and status signals that ensure the process necessary to set up and terminate a telephone call are completed in an orderly and timely manner,