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53. Which of the following protocols is used for communicating call setup information across ISDN circuits?

A. H. 323

B. Q.2931

C. H. 320

D. Q.931

Answer: D   

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54. How many channels are available for use on a T1 E+M wink circuit?

A. 23

B. 24

C. 28

D. 32

Answer: B   

55. Which of the following BEST describes the settings to be ordered for a voice and data PRI circuit?

A. D4, B8ZS

B. D4, AMI

C. ESF, AMI

D. ESF, B8ZS

Answer: D   

56. Which term BEST describes a PBX which uses TDM and IP technology for calls?

A. Hybrid

B. IP based

C. Internet based

D. TDM based

Answer: A