CHAPTER 7. ISDN
556
© SAMSUNG Electronics Co., Ltd.
(Continued)
Command
Purpose
show isdn global
. Displays the ISDN global information
v239# show isdn global
ISDN Global Configuration
-------------------------
Basic Rate Interface
Switch Type: basic-5ess
Tei Mode : Point to Point
Tei value for Point to Point :
0
Side : USR
Primary Rate interface
Switch Type: primary-5ess
Tei value for Point to Point :
0
Side : USR
Troubleshooting ISDN Interfaces
Command
Purpose
debug isdn q921
WORD
Checks Layer 2
debug isdn q931
WORD
Checks Layer 3
debug isdn q921-timers
WORD
Displays q921 timers
v239# show isdn q921-timers bri000
ISDN Layer 2 Timer Values
K = 7 Outstanding I Frames
N200 = 3 Max number of
retransmission of a frame
N203 = 260 Max number of TEI
notification retransmits
T200 = 2 Seconds
T203 = 10 Seconds
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