DNs ring fast busy

[elbyte]

Hello - we are using CUCM 5.1. We see an issue when a DN is assigned to multiple phones and we make a change in the admin gui - like deleting one of the devices, or changing the calling search space for the DN. After completing the change, including a reset, all subsequent calls to the DN ring fast busy. Disassociating/reassociating the devices resolves the issue. Any ideas? Thanks!

[gogasca]

What is the exact CCM version?

How many servers in the cluster?

The IP Phones looks registered?

All phones registered to same server?

Only for shared lines?

[elbyte]

Thanks for taking a look...

CCM version = System version: 5.1.2.1000-11

Administration version: 1.1.0.0-1

Cluster servers = 2

IP phones = registered and to the same server (ccmpub)

Only for shared lines = yes