The General Registrar Features provide general Third Party Registrar support in Sentinel. They are installed out-of-the box in a Sentinel VoLTE installation. The following features support the ESRVCC registration process within VOLTE.

Feature What it provides

Fetches the Mobile Station Roaming Number (MSRN) from the HLR to be included in registration data.

Fetches the Correlation MSISDN (CMSISDN) from the HSS to be included in registration data and ESRVCC Registration.

Implements the ESRVCC registration process (outlined in the Finite State Machine below).

Handles ESRVCC re-registration procedures.

Invalidates the Sh Cache Microservice’s Supplementary Service Data cache entry for the de-registering user.

Warms the Sh Cache Microservice for the registering user’s Supplementary Service Data.

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Sentinel VoLTE Version 3.0.0