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UMTS Services Aspects
The scope of services can be largely focused on different issues like service management, charging and billing, terminals, network management, quality of service, and security. Here, however, we will be looking at services from the principle side in other to
establish a framework to present the UMTS air-interface. An extract of the service principles outlined in the ETSI specifications UMTS Services aspects – Service Principles
and UMTS Services and Services capabilities, can be summarized as follows:
UMTS is the realization of a new generation of mobile communications technology for a
world in which personal communications services should allow person-to-person calling,
independent of location, the terminal used, the means of transmission (wired or wireless)
and the choice of technology.
UMTS shall therefore be in compliance with the following objectives:
(a) to provide a single integrated system in which the user can access services in an easy
to use and uniform way in all environments;
(b) to allow differentiation between service offerings of various serving networks and
home environments;
(c) to provide a wide range of telecommunications services including those provided by
fixed networks and requiring user bit rates of up to 2 Mbits/s as well as services special to mobile communications. These services should be supported in residential,
public and office environments and in areas of diverse population densities. These
services are provided with a quality comparable with that provided by fixed networks such as ISDN;
(d) to provide services via hand held, portable, vehicular mounted, movable and fixed
terminals (including those which normally operate connected to fixed networks), in
all environments (in different service environments – residential, private domestic
and different radio environments) provided that the terminal has the necessary capabilities;
(e) to provide support of roaming users by enabling users to access services provided by
their home environment in the same way even when roaming.
(f) to provide audio, data, video and particularly multimedia services;
(g) to provide for the flexible introduction of telecommunication services;
(h) to provide the capability to support Universal Personal Telecommunications (UPT);
(i) to provide within the residential environment the capability to enable a pedestrian
user to access all services normally provided by fixed networks;
(j) to provide within the office environment the capability to enable a pedestrian user to
access all services normally provided by PBXs and LANs;
(k) to provide a substitute for fixed networks in areas of diverse population densities, under conditions approved by the appropriate national or regional regulatory authority.

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