name: HSS
full_form: Home Subscriber Server
context: The measurements defined in this subclause are subject to the "2 out of 3 approach". .3.2.1 Attempted de-registration procedures initiated by HSS This measurement provides the number of attempted de-registrations initiated by HSS at the S-CSCF. CC. On receipt by the S-CSCF of a Cx-Deregister message for the de-registration initiated by HSS (see 3GPP TS 29.228 [9]). A single integer value. UR.AttDeRegHss. SCSCFFunction. Valid for packet switched traffic. IMS. .3.2.2 Successful de-registration procedures initiated by HSS This measurement provides the number of successful de-registrations initiated by HSS at the S-CSCF. CC. On transmission by the S-CSCF of a "Cx-Deregister Resp" message indicating a successful de-registration initiated by HSS (see 3GPP TS 29.228 [9]). A single integer value. UR.SuccDeRegHss. SCSCFFunction. Valid for packet switched traffic. IMS. .3.2.3 Failed de-registration procedures initiated by HSS This measurement provides the number of failed de-registration
description: The Home Subscriber Server (HSS) stores and manages subscriber data like profiles and service subscriptions. It's vital in the IMS (IP Multimedia Subsystem) architecture, interacting with functions like the S-CSCF (Serving Call Session Control Function).
explanation: The text states the HSS interacts with other network functions (S-CSCF) and manages subscriber data,  clearly defining it as a Network Function within the IMS.
section_title: .3.2De-registration initiated by HSS
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