Souverix Coeur¶
IMS Core - Signaling Brain
Overview¶
Souverix Coeur is the IMS Core signaling brain, containing all X-CSCF components and core session control logic.
Coeur = heart/core (French)
Role¶
Coeur is the sovereign signaling intelligence core that orchestrates all IMS session control and service logic.
Components¶
P-CSCF (Proxy CSCF)¶
- First contact point for User Equipment (UE)
- SIP proxy functionality
- Security enforcement
- Emergency detection
I-CSCF (Interrogating CSCF)¶
- Inter-domain routing
- HSS query and selection
- Load balancing
- Topology hiding
S-CSCF (Serving CSCF)¶
- Core session control
- Service logic execution
- Subscriber management
- Routing decisions
BGCF (Breakout Gateway Control Function)¶
- PSTN breakout routing
- Gateway selection
- Interconnect decisions
MGCF (Media Gateway Control Function)¶
- SIP to ISUP conversion
- Media gateway control
- PSTN interworking
Integration¶
Coeur integrates with: - Souverix Rempart - Border control - Souverix Autorite - Certificate management - Souverix Vigie - AI intelligence - Souverix Gouverne - Policy control
Standards Compliance¶
- 3GPP TS 23.228 - IMS Architecture
- 3GPP TS 24.229 - IP multimedia call control
- 3GPP TS 29.228 - Cx and Dx interfaces