23.1413GPPArchitecture and functional descriptionPresence serviceRelease 15TS
For the purposes of the present document, the terms and definitions defined in TR 21.905  and TS 22.141  and the following apply:
Presence List Server: functional entity that stores grouped lists of watched presentities and enables a Watcher Application to subscribe to the presence of multiple presentities using a single transaction.
Presence Network Agent: network located element that collects and sends network related presence information on behalf of the presentity to a presence server.
Presentity Presence Proxy: functional entity that provides presentity related functionality such as determining the presence server associated with a presentity.
Presence Server: network entity responsible for managing presence information on behalf of a presence entity.
Presence User Agent: a terminal or network located element that collects and sends user related presence information to a presence server on behalf of a Principal.
Watcher Presence Proxy: a functional entity that provides watcher related function such as authentication of watchers.
For the purposes of the present document, the abbreviations in TR 21.905  and TS 22.141  and the following apply:
AAA Authentication, Authorisation and Accounting
CAMEL Customised Applications for Mobile network Enhanced Logic
CAP CAMEL Application Part
CGI Cell Global Identity
CS Circuit Switched
CSCF Call Session Control Function
GGSN Gateway GPRS Support Node
GMLC Gateway Mobile Location Centre
GPRS General Packet Radio Service
HLR Home Location Register
HSS Home Subscriber Server
HTTP Hyper Text Transport Protocol
I-CSCF Interrogating CSCF
IETF Internet Engineering Task Force
IMS IP Multimedia Subsystem
ISDN Integrated Service Digital Network
LIF Location Interoperability Forum
MAP Mobile Application Part
MSC Mobile Switching Centre
MSISDN Mobile Subscriber ISDN Number
P-CSCF Proxy CSCF
PDG Packet Data Gateway
PLMN Public Land Mobile Network
PS Packet Switched
PUA Presence User Agent
RFC Request For Comments
SAI Service Area Identity
S-CSCF Serving CSCF
SGSN Serving GPRS Support Node
SIP Session Initiation Protocol
SMS Short Message Service
UE User Equipment
URL Uniform Resource Locator
WAP Wireless Access Protocol
WLAN Wireless Local Area Network
WML Wireless Markup Language
WV Wireless Village