With the release of the DT800 and DT400 desktop telephones in September of 2014 for the SV9000 Series Systems, they have announced the End of Life (EOL) for the DT700 and DT300 model telephones (ITL and DTL).
End of Life – September 30, 2016
End of Support – September 30, 2017
End of Extended Warranty – September 30, 2021