To set the time and date 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. For AVAYA, NORSTAR, NEC, SAMSUNG, MITEL, PANASONIC, TOSHIBA telephone systems and voicemail call (866)206-2316 or email