If your time is out of sync or simple is completely off the local time, you can change the date and time very simply in few steps:
1. Find your admin console phone
2. Press FEATURE button
3. Enter login: **266344
4. Enter password: 266344
5. Now press NEXT few time till you see Date&Time on display and press SHOW
6. Now you can make changes for HOUR, select AM or PM and press NEXT to change MINUTES, YEAR, DAY and MONTH
7. Once you have entered the correct information simply press RLS (RELEASE) button on the phone and the settings will be updated across the PBX network.