A description of the Genesys GETS SIP/CSTA gateway can be found at http://www.genesyslab.com/products/enterprise_collaboration.asp.
ECMA-269 information can be found at http://www.ecma-international.org/publications/standards/Ecma-269.htm.
ECMA-323 information can be found at http://www.ecma-international.org/publications/standards/Ecma-323.htm.
ECMA TR/87 information can be found at http://www.ecma-international.org/publications/techreports/E-TR-087.htm.
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