PTTs were found in ________.
A) Europe
B) the United States
C) both A and B
D) neither A nor B
Correct Answer:
Verified
Q12: For PBXs,camp-on is _.
A)a user service
B)an attendant
Q23: Which of the following is an advanced
Q24: With 900 numbers,the _ pays and pays
Q25: In the United States,telephone customers can connect
Q25: For PBXs,nighttime calling is _.
A)a user service
B)an
Q29: Which of the following was set up
Q37: Which of the following would a mail
Q42: Message units are a time and distance
Q43: Call restriction refers to a switch's ability
Q47: Even for local calls,many telephone companies charge
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