While Victor's advice about multilink may be good advice, your problem is at a lower level that this. If the status is showing as disconnected then you are not communicating properly with the ISDN switch.
I have sometimes seen problems associated with use of isdn point-to-point setup. if there is not a particular reason to have it configured I would suggest that you remove it.
Can you verify that the interface is correctly connected and that the switch type you have configured is the proper switch type?
We are pleased to announce availability of Beta software for 16.6.3.
16.6.3 will be the second rebuild on the 16.6 release train targeted
towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are
looking for early feedback from customers befor...
Introduction Featured Speakers Luis Espejel is the Telecommunications
Manager of IENova, an Oil & Gas company. Currently he works with Cisco
IOS® and Cisco IOS XE platforms, and NX to some extent. He has also
worked as a Senior Engineer with the Routing P...
In this session you can learn more about Layer 3 multicast and the best
practices to identify possible threats and take security measures. It
provides an overview of basic multicast, the best security practices for
use of this technology, and recommendati...