During business hours, ring no answer calls are routed to an incorrect unity connection server. After hours ring no answer calls route to the local unity connection server. Where do I change it so it always goes to the local unity connection server?
This is controlled by the overflow numbers on the queue within CUBAC admin. That is typically a DN with a voicemail profile defined and CFA enabled. Review the overflow destination and then find that in CUCM to check the configuration. Ultimately it's CUCM that sends the call to voicemail, not CUBAC itself.