Sentinel VoLTE includes Sentinel’s IN Service and Sentinel’s SIP Service.
These both sit on top of OpenCloud’s Rhino SIS product.
These services each contain features for IMS Service Centralisation. Of note are the Re-origination features. One sits in the Sentinel IN service, and the other in the Sentinel SIP service. Re-origination data is stored in the Correlation RA.
More information on these features is described in the VoLTE Administration Guide, under the Service Centralisation Features.