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9
DESIGN METHODOLOGY FOR
TELECOMMUNICATION SERVICES
As already mentioned, information technology will play an important role in the
coming century. As IT advances in our society, a variety of telecommunication
services will be desired. In response to these demands, easy-to-use and effective
telecommunication services will become available. The newly developed services
will be provided not only by common carriers but also by value-added companies.
To realize such services it is desirable to establish human-friendly development
environments. In this chapter the design methodology for telecommunication ser-
vices is described.
9.1 STATE-OF-THE-ART DESIGN METHODOLOGY
The design and development of telecommunication services are carried out as
follows:
(1) Design of the telecommunication service
(2) Description of the telecommunication service by signal sequence or by
functional Specification and Description Language (SDL)
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