Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements
Webcast-Catalyst9k
New Member

ISDN BRI module not working in 3640

Dear Experts..

We just purchase 3640 router with 4-port ISDN BRI module, when i PLug in my ISDN line in bri port its layer onee and two not activated and shows me a deactivated status, as follow..

ISDN BRI2/0 interface

dsl 16, interface ISDN Switchtype = basic-net3

Layer 1 Status:

ACTIVATING

Layer 2 Status:

Layer 2 NOT Activated

Layer 3 Status:

0 Active Layer 3 Call(s)

Active dsl 16 CCBs = 0

The Free Channel Mask: 0x80000003

Number of L2 Discards = 0, L2 Session ID = 16

We also have a 2522 router with a bri port and the same ISDN line working fine on that router ,,,

when i on my q921 and q931 debug and give this command

isdn call int bri2/0 5436782

it ginves me the messages as follows

*Mar 24 18:07:29.098: ISDN BR2/0: Could not bring up interface

Plzz tell me what i am missing ,,,,, or is there any p[ossibility of IOS bug ( we are using 12.2-7b ) or the faulty BRI module..

Thanks in advance

Muhamed Asif Shaikh

2 REPLIES
Cisco Employee

Re: ISDN BRI module not working in 3640

try this doc

http://www.cisco.com/warp/public/129/isdn_20602.html#problems2

also try using Cisco Output Interpreter for eg; "show isdn status" command and others, very useful tool;

https://www.cisco.com/cgi-bin/Support/OutputInterpreter/home.pl

HTH

R/Yusuf

Cisco Employee

Re: ISDN BRI module not working in 3640

Somehow the Layer 1 on the BRI in 3640 fail to make it to "Active" state...Try to use " shut/no shut under the interface and also "clear interface bri x/x" to see the results..Also try to move the same bri line to other bri port as well..

Here is the place which talks about that too.

http://www.cisco.com/warp/public/129/bri-layer1.html

And also Layer 2

http://www.cisco.com/warp/public/129/bri-layer2.html

If its not comaing up at all then may be the card went bad...Tejal

127
Views
0
Helpful
2
Replies
CreatePlease to create content