9th edition (December 2011)
Services for Computer Supported Telecommunications
Applications (CSTA) Phase III
This Standard specifies an interface and services between two entities that request and provide communication services (e.g. Applications, middleware, PBX, IP-PBX, Softswitch, phone, softphone, software devices).
CSTA operates with existing interfaces, so that differences among various existing interfaces are hidden.
Services defined in this Standard allow functional integration between a computing network and a telecommunications network.
This Standard is part of a suite of CSTA Standards and Technical Reports. See documentation.
The following files can be freely downloaded:
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||Acrobat (r) PDF file
||Changes since the previous edition
Acrobat (r) PDF file
This Ecma publication is also approved as ISO/IEC 18051.
The previous replaced "historical" editions of this Ecma Standard are available here.