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hung b channel on t1 isdn

hi guys.

i have a t1 running isdn 5ess.

looking with show controller call-counters i see this :

DS0's Active: 1

DS0's Active High Water Mark: 1

TimeSlot Type TotalCalls TotalDuration

1 pri 0 00:00:00

2 pri 0 00:00:00

3 pri 0 00:00:00

4 pri 0 00:00:00

5 pri 0 00:00:00

6 pri 0 00:00:00

7 pri 0 00:00:00

8 pri 0 00:00:00

9 pri 0 00:00:00

10 pri 0 00:00:00

11 pri 0 00:00:00

12 pri 0 00:00:00

13 pri 0 00:00:00

14 pri 0 00:00:00

15 pri 0 00:01:47

16 pri 0 00:00:00

17 pri 0 00:00:00

18 pri 0 00:00:00

19 pri 0 00:00:00

20 pri 0 00:00:00

21 pri 0 00:00:00

22 pri 0 00:00:00

23 pri 0 00:00:00

notice that b channel 15 has duration even though no call is going through. here is the config of the controller :

framing esf

pri-group timeslots 1-24

and the d channel settings :

no ip address

trunk-group 019

isdn switch-type primary-5ess

isdn not-end-to-end 64

isdn incoming-voice modem

isdn map address .* plan isdn type unknown

isdn busy b_channel 15

isdn T310 45000

isdn send-alerting

isdn sending-complete

no cdp enable

as you can see i set channel 15 to busyout after this problem.

thanks in advance.

1 Reply 1

Chester Rieman
Cisco Employee
Cisco Employee

What do show isdn service and show isdn status say about this b channel?