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Technical Report TR/68
Scenarios for Computer Supported
Telecommunications Applications (CSTA) - Phase II
(December 1994)
The intention of this Technical report is to illustrate how the services
offered by CSTAare intended to be used by application developers and
switch manufacturers. The illustrations are based upon a range of
call scenarios. The Services for Computer Supported Telecommunications
Applications are defined by Standard ECMA-217 and the Protocol for
those services by Standard ECMA-218.
The scenarios are only for information and as such ECMA-217
(Services) and ECMA-218 (Protocol) standards may define additional
options or parameters. The purpose of this Technical Report is to
provide examples of some CSTA Service invocations and illustrate associated
call event reports. It is not an exhaustive document and some implementations
may not perform as illustrated within this document. A method of providing
these scenarios as a collection of smaller building blocks which may
then be connected together to form more complex scenarios is under
study.
These scenarios show a strict order of messaging (i.e. a service
request is always followed by a service acknowledgement). However,
in a true implementation an acknowledgement to a service request may
be received in an asynchronous mode by the computing function. Events
are generated throughout the life of a call and as such represent
the passing of time in these scenarios.
The following files can be freely downloaded:
| File name |
Size (Bytes) |
Content |
| T068-DOC.EXE |
180'804 |
MS Word file, self expanding |
| T068-PDF.PDF |
407'720 |
Corresponding Acrobat PDF file |
The above files are included in the current version of the ECMA CD-ROM.
The CD-ROM and printed copies of this Technical Report can be ordered,
free of charge, from documents@ecma.ch
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