For the purposes of the present document, the terms and definitions given in TR 21.905
and the following apply. A term defined in the present document takes precedence over the definition of the same term, if any, in TR 21.905
IP-Interconnection Intermediate Carrier:
a intermediate entity that provides interconnection in different levels (Service, Transport) (e.g. IPX).
IP Service Interconnection:
An IP interconnection where the definition scope goes beyond the pure technical/network scope and takes into account the requirements for the services supported by that interconnection.
IP Packet Exchange:
a relationship model and requirements set defined by GSMA aiming at resolving all IP Service Interconnection functions between/among Service Providers of User-to-User services, through a specialized player called IPX Provider (IPXP), assuring:
Openness: for any kind of Service Provider.
Quality and security: through a private IPX network, as an alternative to the Internet.
Efficiency: multi-service support (one-connection, one agreement).
Cascade responsibility in the chain of interconnecting operators.
The entity which offers telecommunication services to the end user by means of a wireless or fixed access (i.e. mobile or fixed network operator).
A Service Provider is either a network operator or another entity that provides services to a subscriber (e.g. a MVNO).
Are retail services that allow communication between End Users. U2U services need E2E (End-to-End) network support.
For the purposes of the present document, the abbreviations given in TR 21.905
and the following apply. An abbreviation defined in the present document takes precedence over the definition of the same abbreviation, if any, in TR 21.905
IP Packet eXchange
GPRS Roaming eXchange
User to User
End to End