I have a question re: IMS  SCSCF redundancy.:There are several SCSCF instances, registration happens via  SCSCF1, it goes down after that. UE make MO call.. PCSCF resolves the common  SCSCF fqdn and sends an invite to available SCSCF2 which does not have UE profile as well as AS address (which is received during registration SAR/SAA in iFC). There are 2 options here, either to release the call (as per 3gpp spec upon specific release code, eg 408/503 UE should perform re-registration - not happen in our case unfortunately), or to send request for iFC (suspend the call, fire SAR, receive SAA, check available services, etc) and upon success continue the call (to AS first)/ Lke IMS Registrar SCSCF save function, but for the invite. To continue the call without interaction with AS is not a good idea..

Any advice or workaround on how to achieve desired SCSCF redundancy ?