IMS configuration is stored in HSS. This page shows which IMS components are stored where.
IMS subscription (IMSI)
Each subscriber has a IMS subscription which is linked to a preferred S-CSCF — Sprout.
Preferred S‑CSCF
The Preferred S-CSCF page can be reached from the network configuration page. The entry for Sprout points to the SIP URI of the S-CSCF.
Default profile
Each of the subscribers in HSS is linked to the service profile default_sp.
This service profile is linked to the two iFCs SipInvite and SipRegister.
As the name implies, the 'SipInvite' iFC is for INVITE initiated signalling, and 'SipRegister' is for REGISTER initiated signalling.
Initial filter criteria
The iFCs SipInvite and SipRegister are linked to the VoLTE TAS via the Application Server definition Rhino_AS.
SipInvite:
SipRegister:
Application server
The Application server entry for Rhino_AS provides the connection details for the VoLTE TAS server.
