The S8 Home Routing (S8HR) uses the LTE S8 interface for transporting VoLTE traffic between the visited and home network as data traffic. The S8HR does not require IMS in the visited LTE network. In S8HR roaming architecture model of VoLTE, the Packet Data Network Gateway (PGW), Policy Charging and Rules Function (PCRF), and Proxy Call Session Control Function (P-CSCF) are in the Home Public Land Mobile Network (HPLMN) when the UE is roaming in a Visited Public Land Mobile Network (VPLMN).
For more information on this profile, refer to Visited Public Land Mobile Network Profile - CLI.
> show table profiles services vplmnProfile <name>
> show table profiles services vplmnProfile VPLMN URN ID PREFIX PREFIX NAME ENTRY ENTRY ENTRY -------------------------------------- US_PLMN_PROF 310010 911