3 Definitions, symbols and abbreviations

29.2293GPPCx and Dx interfaces based on the Diameter protocolProtocol detailsRelease 17TS

3.1 Definitions

Refer to IETF RFC 6733 [28] for the definitions of some terms used in this document.

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

Attribute-Value Pair: see IETF RFC 6733 [28], it corresponds to an Information Element in a Diameter message.

Diameter Multimedia client: a client that implements the Diameter Multimedia application. The client is one of the communicating Diameter peers that usually initiate transactions. Examples in 3GPP are the I-CSCF and S-CSCF.

Diameter Multimedia server: a server that implements the Diameter Multimedia application. A Diameter Multimedia server that also supported the NASREQ and MobileIP applications would be referred to as a Diameter server. An example of a Diameter Multimedia server in 3GPP is the HSS.

Registration: SIP-registration.

Server: SIP-server.

User data: user profile data.

3.2 Abbreviations

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

AAA Authentication, Authorization and Accounting

ABNF Augmented Backus-Naur Form

AVP Attribute-Value Pair

CN Core Network

CSCF Call Session Control Function

DSCP Differentiated Services Code Point

DRMP Diameter Routing Message Priority

HSS Home Subscriber Server

IANA Internet Assigned Numbers Authority

I-CSCF Interrogating CSCF

IETF Internet Engineering Task Force

IMS IP Multimedia Subsystem

NDS Network Domain Security

RFC Request For Comments

S-CSCF Serving CSCF

SCTP Stream Control Transport Protocol

SIP Session Initiation Protocol

SLF Server Locator Function

UCS Universal Character Set

URL Uniform Resource Locator

UTF UCS Transformation Formats

WAF WebRTC Authentication Function

WWSF WebRTC Web Server Function