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Chapter 8
Troubleshooting ISDN
16.
How long is the default ISDN idle timer for each B channel?
A.
30 seconds
B.
60 seconds
C.
90 seconds
D.
120 seconds
E.
300 seconds
17.
Layer 3 of ISDN (q.931) is responsible for which of the following?
A.
Determining the switch type
B.
Call setup and disconnect
C.
Assignment of the TEI
D.
Encapsulation of packets on the B channel
18.
What is the D channel used for? (Choose all that apply.)
A.
q.921 messages
B.
q.931 messages
C.
TCP/IP
D.
AppleTalk
19.
If the switch type is unknown, which command may the administrator use?
A.
isdn switch type 0
B.
isdn auto switch
C.
isdn autodetect
D.
isdn switch generic
E.
None of the above
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