scope:

This European Telecommunication Standard (ETS) provides general guidelines to present UPT Phase 1. The service description is related primarily to the service subscriber's and user's point of view, but does not deal with the details of human interface itself. This ETS includes information applicable to network operators, service providers and terminal, switch and database manufacturers.

This ETS specifies the requirements where the service is provided to the user via a telecommunications network that is either the Pan-European Integrated Services Digital Network (ISDN) or a Public Switched Telephone Network (PSTN) as provided by European public telecommunications operators.

The requirements different from those of the basic call where the UPT service is provided to the user via a mobile network are outside of the scope of this ETS.

This ETS contains the core requirements for the UPT Phase 1 service, where it is provided a service that includes a subset of core and optional features foreseen in a long-term perspective.

This ETS also describes some additional requirements which may be implemented.

Furthermore, additional functionality not documented in this ETS may be implemented. This additional functionality may be on a network-wide basis, or particular to one or a group of users. Such additional functionality does not compromise conformance to the core requirements of the service.

Charging principles are outside the scope of this ETS, unless specific service indications are given.

Interaction with services/supplementary services not listed in clauses 7 and 8 are outside the scope of this ETS.

UPT enables access to telecommunication services while allowing personal mobility. It enables each UPT user to participate in a user-defined set of subscribed services and to initiate and receive calls on the basis of a personal, network-transparent UPT number across multiple networks on any fixed or mobile terminal, irrespective of geographical location, limited only by terminal and network capabilities and restrictions imposed by the network operator. Calls to UPT users may also be made by non-UPT users.

Access rights of the terminal owner may be guaranteed also in the case of registered UPT user on the same terminal.

UPT Phase 1 service is applicable to voice telecommunication services provided by ISDNs and PSTNs.

No method of testing is provided for this ETS.