123380 < PROVEN • 2025 >

: These are specific Diameter protocol messages (Server-Assignment-Request and Location-Information-Request) used by the HSS and S-CSCF to update and overwrite user data during restoration events.

The specification has evolved through multiple "Releases" to keep pace with mobile technology: 123380

: During initial registration, the S-CSCF backs up critical data—such as the list of SIP proxies, contact information, and authentication schemes—to the HSS. and authentication schemes—to the HSS.