Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. If you'd prefer to explore, try our test area to get started. And see here for current known issues.

New Member

Can the built-in NT1 on a 2600 router be looped?

I work for a telco. We have a DMS-100 switch and a customer of ours has a 2610 router with a ISDN BRI with us.

I have run a NT1 loopback test , but it doesn't seem to loop.

What is troubling is, the router will no longer sync with the switch, until the router is rebooted.

Does the NT-1 support loopback codes?

  • Other Network Infrastructure Subjects
1 REPLY
Anonymous
N/A

Re: Can the built-in NT1 on a 2600 router be looped?

The fixed HW versions are 800-01238-04 (for the NM-4B-U)

and 800-01239-04 (for the NM-8B-U). You can see the

version of the NM-4B-U or NM-8B-U using the IOS "show

diag" command.

I do not think that the BRI's support loopback codes from the network.

72
Views
0
Helpful
1
Replies
This widget could not be displayed.