DSX Versions 1 and 2 and DS-Series Telephone part numbers 109xxxx and 80xxx To set the time and date for your DSX Version 1 or 2 or DS-Series System: From extension 300, dial #TD (#83). Do this without lifting the handset or pressing any other keys first. Enter the time in 24-hour clock using hours (2 digits), minutes (2 digits) and seconds (2 digits). Press HOLD. Enter the date using month (2 digits), day (2 digits), and year (4 digits). Press HOLD, then SPEAKER (SPK on DS-Series) to exit. To set the time for your DSX Version 3 System: Go to extension 301. Keyset: Push Menu + 01. Super Display: Push Menu + Admin + Time. Enter the time (HH:MM:SS, 24-hour clock). Push Save. To set the date for your DSX Version 3 System: Go to extension 301. Keyset: Push Menu + 02. Super Display: Push Menu + Admin + Date. Enter the date (DD/MM/YYYY). Push Save. For AVAYA, NORSTAR, NEC, SAMSUNG, MITEL, PANASONIC, TOSHIBA telephone systems and voicemail call (866)206-2316 or email MasterTelephone@gmail.com