Release 2.6 was made generally available in June 2010. Avaya one-X Deskphone XML Designer Release 2.0 and Avaya IP Deskphone PushSDK Release 2.2 should be used with this release. This is the latest release of SIP software for installation on Avaya 9620, 9620C, 9620L, 9630, 9630G, 9640, 9640G, 9650, and 9650C IP Deskphones and is recommended for new development.
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