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4 switching on and off, 1 switching on, Press and hold – AASTRA DT690 for BusinessPhone User Guide EN User Manual

Page 34: Press yes to confirm, 2 switching off, In idle mode, press and hold, 4switching on and off

4 switching on and off, 1 switching on, Press and hold | Press yes to confirm, 2 switching off, In idle mode, press and hold, 4switching on and off | AASTRA DT690 for BusinessPhone User Guide EN User Manual | Page 34 / 127 4 switching on and off, 1 switching on, Press and hold | Press yes to confirm, 2 switching off, In idle mode, press and hold, 4switching on and off | AASTRA DT690 for BusinessPhone User Guide EN User Manual | Page 34 / 127