NEC DT820 Series - Document Revision History

. . . . .
DT820 Phone User Guide P/N 540-441r3 v
DOCUMENT REVISION HISTORY
540-441r1 February 2016 Initial release, NEC Std SIP 4.0 for DT820
540-441r2 June 2016 Edits and corrections, NEC Std SIP 4.0 for DT820
540-441r3 June 2017 Edits and corrections, NEC Std SIP 4.1 for DT820
540-441r4 January 2018 Edits and corrections, NEC Std SIP 4.1 for DT820
540-441r5 March 2018 Edits and corrections for v9.1.0
540-441r6 August 2018 Edits and corrections, NEC Std SIP 4.3 for DT820/DTG820C