Too many fields.
Cluster definition form:
- PBX number is just a PBX number and you can not use the same twice in a cluster
not to be confused with
- Cluster Element ID Digits: this is a dial number to reach the specific system, not to conflict with any other dial number such as ARS or extension numbers, Feature access codes . . .
- Feature DN: used to access features on specific controller by background processes, some features will not work without this, and is shall not conflict with other Dial numbers, similar to other FAC
When you assign the CeID Digits a warning will pop for ARS configuration you must do.
- program either IP Trunks in the IP/XNET section or in newer release just use Direct IP route medium
Direct IP makes routing based on the RDN (Remote Directory Number) list.
- looks up the number and the system it belongs to, then searches the CeID digits of that system in ARS and sends the call to the PBX specified in the route (not necessarily the same one)
If you want to create a loop-back pick another than the local CeID number for ARS, whatever you want to loop, and send it to a route pointing to the local system.
- blocking the local CeID digits in ARS digits dialed is intentional: it would create a dialing loop and bring down the system
PS: The local loop is used in advanced emergency call handling, review documentation for more details.