Protocol for Computer Supported Telecommunications
Applications (CSTA) - Phase II
This Standard specifies application protocol data units (APDUs) for
the services described in Standard ECMA-217,
Services for Computer Supported Telecommunications Applications (CSTA)
Phase II. The field of application of this Standard is the interconnection
of switches and computers in a private telecommunications environment.
Phase II of CSTA extends the range of features
offered by CSTA Phase I.
Section II (clause 5 to clause 7 inclusive) describes the concepts underlying
the Remote Operations model, notation and service.
Section III (clause 8 to clause 19 inclusive) contains CSTA-specific
protocol details and forms the main part of this Standard.
Further information on CSTA is also
The following files can be freely downloaded:
||Acrobat (r) PDF file
|| Acrobat (r) PDF file