Conclusion: Handled by the drafting group on Registration.
S2-001469 from Ericsson: HSS Role as VLS
A new function is proposed to be handled by the HSS, which is the handling of the identity of the S-CSCF that has been assigned to Multimedia roamers using visited network control. This function is called VLS.
Discussion: Nokia stressed that the proposal leads to have the HSS storing some information for the roaming users.
Also linked to the drafting group discussions.
AT&T stressed there is a need to hide the S-CSCF address to external network because this is sensitive information (an operator’s sudden increase of 20 S-CSCF to 50 S-CSCF contains information for competitors), so Ericsson’s argument is valid. But Nokia answered there is no one-to-one relationship between the IP addresses and the number of S-CSCF implemented (multiple IP addresses per S-CSCF are possible, as well as the contrary, using cluster).
Conclusion: Not approved. Some written contributions are needed on this subject.
S2-001463 from Ericsson: Triggering the CSCF Selection Function. Visited Network Control case.
The VLS issue is also addressed here.
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