3 Definitions, symbols and abbreviations

29.2283GPPIP Multimedia (IM) Subsystem Cx and Dx InterfacesRelease 17Signalling flows and message contentsTS

3.1 Definitions

For the purposes of the present document, the following terms and definitions given in TS 23.003 [17] apply:

Distinct Public Service Identity

Distinct Public User Identity

Public Service Identity

Public User Identity

Wildcarded Public Service Identity

Wildcarded Public User Identity

For the purposes of the present document, the following terms and definitions apply.

Common Part (of a user profile): Contains Initial Filter Criteria instances that should be evaluated both for registered and unregistered Public User Identities, or for unregistered Public Service Identities in the S-CSCF.

Complete user profile: Contains the Initial Filter Criteria instances of all three different user profile parts; registered part, unregistered part and common part.

IP Multimedia session: IP Multimedia session and IP Multimedia call are treated as equivalent in this specification.

Authentication pending flag: A flag that indicates that the authentication of a Public User Identity – Private User Identity pair is pending and waiting for confirmation.

Charging information: Data that is sent in the Charging-Information AVP.

Allowed WAF and/or WWSF identities: A list of network addresses identifying WebRTC Authentication Functions (WAFs) and/or WebRTC Web Server Functions (WWSFs) allowed for a subscription.

Implicitly registered Public User Identity set: A set of Public User Identities, which are registered and de-registered simultaneously when any of the Public User Identities belonging to that set is registered or de-registered.

Not Registered State: Public Identity is not Registered and has no S-CSCF assigned.

Private Identity: Either a Private User Identity or a Private Service Identity.

Public Identity: Either a Public User Identity or a Public Service Identity.

Registered Part (of a user profile): Contains Initial Filter Criteria instances that should be evaluated only for registered Public User Identities in the S-CSCF. iFCs from the registered part need not be evaluated when the Public Identity is unregistered.

Registered State: Public User Identity is Registered at the request of the user and has an S-CSCF assigned.

S-CSCF reassignment pending flag: A flag that is handled only when IMS Restoration Procedures are supported.and that indicates that the subscription may be reassigned to a new S-CSCF (i.e. the current S-CSCF is not responding)

Unregistered part (of a user profile): Contains Initial Filter Criteria instances that should be evaluated only for unregistered Public Identities in the S-CSCF. iFCs from the unregistered part need not be evaluated when the Public User Identity is registered.

Unregistered State: Public Identity is not Registered but has a serving S-CSCF assigned to execute Unregistered state services as a consequence of a terminating request, or an originating request from an AS on behalf of a user, or there is an S-CSCF keeping the user profile stored.

User information: The user related data that the S-CSCF requests from the HSS or HSS pushes to the S-CSCF, e.g. user profile,charging information, allowed WAF and/or WWSF identities and authentication information.

User profile: Data that is sent in the User-Data AVP.

3.2 Abbreviations

For the purposes of the present document, the following abbreviations apply:

AVP Attribute Value Pair

C Conditional

CSCF Call Session Control Function

DRMP Diameter Routing Message Priority

DSCP Differentiated Services Code Point

GIBA GPRS-IMS-Bundled-Authentication

HSS Home Subscriber Server

IE Information Element

IP Internet Protocol

I-CSCF Interrogating CSCF

IM IP Multimedia

IMS IP Multimedia Subsystem

M Mandatory

MPS Multimedia Priority Service

NASS Network Attachment SubSystem

O Optional

P-CSCF Proxy CSCF

SIP Session Initiation Protocol

SLF Server Locator Function

S-CSCF Serving CSCF

WAF WebRTC Authentication Function

WWSF WebRTC Web Server Function