Study on IP Multimedia Subsystem (IMS) Proxy Call Session Control Function (P-CSCF) restoration procedures
The present document analyses existing P-CSCF restoration mechanism limitations and drawbacks, as defined by 3GPP TS 23.380 [2] and 3GPP TS 24.229 [3], and proposes alternative solutions that could minimize such limitations.
Expected output from this document is a proposal of an enhanced P-CSCF restoration mechanism.