We are a UK based company.
We have Cisco 2610 ISDN Router that has worked fine for the last five years. We have now moved offices, and it is unhappy. We use the router to dial out to customer sites. The config has not changed since the move, could not see any reason why the config would need to change. The ISDN lines are up and running, had BT on site yesterday to check the lines. There seems to be a connection between the ISDN terminals and the Router. If I pull a cable out the light on the ISDN terminal starts flashing, if I plug the cable back in it stops flashing. Now if I try to connect to a remote site it attempts to dial the correct number i get
ISDN-6-LAYER2DOWN: Layer 2 for Interface BR1/3, TEI 255 changed to down
I don't want to post all the debug info at this stage, if someone can point me in the right direction. If not I will post the debug info.