VOLTE uses mappers as it processes third-party REGISTER requests.
The General Registrar Mappers provide general Third Party Registrar support in Sentinel. They are installed out-of-the box in a Sentinel VoLTE installation. The following mappers support the ESRVCC registration process within VOLTE.
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For an overview of what mappers are and how they work, please see Mappers in the Sentinel documentation. |
Mapper execution points
The Registrar searches for mappers at the following mapper execution points:
| Mapper Execution Point | Role of mappers at this point |
|---|---|
UpdateATCF |
Building a SIP MESSAGE message to the ATCF. |
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See the enum com.opencloud.sentinel.mapper.RegistrarMappingPoint in the sentinel-sip-registrar-common module.
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Mappers included with VOLTE
SessionStateToSipMessage
| From … | … To | Description |
|---|---|---|
SentinelRegistrarSessionState |
OutgoingSipRequest |
Builds a SIP MESSAGE message that is passed to the ATCF during ESRVCC processing. |
