Which location must be assigned to the SIP trunk to replicate enhanced location information via a SIP trunk?

"Phantom" is not a recognized location type in Cisco UCM for enhanced location information via SIP trunks.

"Replica" refers to a subscriber server role in UCM, not a location type for SIP trunk replication.

"Hub_none" is not a standard or valid location type for this specific feature in Cisco UCM.

In Cisco Unified Communications Manager, a "Shadow" location must be assigned to a SIP trunk to enable the replication of enhanced location information, such as device mobility and Automated Alternate Routing (AAR) details, across different clusters. This special location type is crucial for proper call routing and feature functionality in complex multi-cluster deployments.