14. The parameter code that covers trunk circuits utilized between two
switchboards is the
a. Z1 parameter code.
b. Z3 parameter code.
c. Z2 parameter code.
d. X1 parameter code.
15. Assume that in comparing four conditioned circuits you find one has
less than 3000 microsecond delay characteristic. This circuit will satisfy
the circuit parameter of delay for schedule
a. D2 parameter code.
b. S1 parameter code.
c. S3 parameter code.
d. N3 parameter code.
16. Schedules Z1, Z2, and Z3 have some similarities. However, schedule Z3
(table 4) is different in that it is intended for transmission of
a. clear-text voice over metallic facilities.
b. VF telegraph over telephone carrier channels.
c. DC telegraph over VF telegraph carrier channels.
d. trunk circuits used between two switchboards.
As part of your training, you have been told to check an incoming line
for nonsecure voice transmission. When you measure the incoming signal test
tone of 1,004 Hz, you find a level of +2 dBm at the output of having -26 dB
gain. Refer to DCAC 300-175-9 Extract table 2 for circuit parameters.
Exercises 17 through 20 are based on this continued situation.