The specification has evolved through multiple "Releases" to keep pace with mobile technology:
: Focused on basic IMS recovery for GSM and UMTS.
: 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.
The specification has evolved through multiple "Releases" to keep pace with mobile technology:
: Focused on basic IMS recovery for GSM and UMTS.
: 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.