Practice Quiz in Wire and Wireless Communications System Part 55

Question 541. The first number of the loaded cable designation 19H44 indicates

Question 542. 10 or more subscribers connected in a central office exchange using same local loop

Question 543. A group of sixty voice channels with bandwidth of 240 kHz is called a

Question 544. The signal to noise ratio for voice based on customer satisfaction is

Question 545. The attenuation loss limit of the subscriber loop is set at 6 dB. What is the maximum length if a 26H88 loading coil with an attenuation of 0.80 dB per kilometer is added?

Question 546. In fax, the following are scanner signals where the switcher switch in except:

Question 547. A trunk is

Question 548. The following are signalling functions except:

Question 549. During a busy hour in a telephone system an average of one call is lost, then the grade of service is considered to be:

Question 550. An induction coil which is multiple winding transformer intended to interface a 2-wire circuit to be a 4-wire circuit to permit two-way transmission of signals.