You can remove an element from its data-sharing network at any time. However, if you remove an element from a network, you must disable the SDS feature on that element. When you disable the SDS feature, the element ceases to participate in data-sharing at any scope. If you want the element to resume data sharing in any scope (either in the same network or another network), you must enable the SDS feature on that element (see Enabling SDS) and start sharing again (see Sharing Data).
CAUTION: Before disabling SDS on a member element, ensure that the elements are sharing data at the network or cluster scope.
The procedure for removing a network element from a cluster that uses RDN Synchronization is given below. In the following procedure, element A is the master for the operation and element B is the element that you are removing from the cluster.
Log into a system administration tool session on element B. De-program all group features and devices that are hosted on element B.
delete any page group entries
delete any call rerouting first/second alternative references
delete the devices from the User and Device Configuration form. This step also deletes the telephone directory entries. The RDN entries and hosted service entries for these devices are automatically removed from the cluster element databases via SDS.
delete the group features using the appropriate group forms. This step blanks the directory numbers of the telephone directory entries. For devices, SDS automatically removes the RDN/hosted service entries.
Log into element A. Remove resiliency from any devices or groups that use element B as the secondary.
In the User and Device Configuration form, remove resiliency from devices.
In the associated group form, remove resiliency from groups.
Repeat step 2 on any other cluster elements that have resilient devices or groups that have element B assigned as the secondary controller.
Log into element B and disable the SDS option in the System Options form.
Log into element A, access the Cluster Elements form and delete element B as a cluster element.
Reinstall the system software on element B to remove the cluster programming data (PNI for the cluster, CEID indexes and CEID digits for the other elements, and so forth) from element B.
