Setting System Clocks

British Summer Time is from 1 am (GMT) on the last Sunday in March to 2 am (BST) on the last Sunday in October. The system clock on your company's telephone system should be reset to match as soon as possible after the 'official' change.

For 'setting the clocks forward' in March, the change involves setting the clock 1 hour ahead, officially when the clock is at 1 am it should be set to 2 am. For 'setting the clocks back' in October, the change involves setting the clock back 1 hour, officially when the clock is at 2 am it should be set to 1 am.

Most system clocks can be changed from a designated Digital Key handset connected to the system, and some from any handset. The Avaya IP Office series should reset themselves automatically, but instructions are included for manual adjustment. Instructions for the systems are given below.

Setting LG Electronics GDK systems

All the GDK systems use a designated handset, the Attendant station, as the control panel for the telephone system. To find the Attendant station on your system, dial '0' and it will be the phone that rings in response. From this handset, perform the following steps:

  1. Press Trans/PGM button.

  2. Press the # (Hash key) then 1.

  3. Dial the date to be set, in the format 'MMDDYY' and press Hold/Save. (That would be 03251 for 25th March 2007)

  4. Dial the time to be set in the format 'HHMM' and press Hold/Save. (That would be 0200 for 2am in the morning)

Setting LG/Goldstar GSX systems

All GSX systems use a designated handset, the Attendant station, as the control panel for the telephone system. To find the Attendant station on your system, dial '0' and it will be the phone that rings in response. From this handset, perform the following steps:

  1. Press Trans/PGM button, then dial 299.

  2. Dial the date to be set, in the format 'MMDDYY' and press Hold/Save (That would be 032507 for 25th March 2007)

  3. Dial the time to be set in the format 'HHMM' and press Hold/Save (That would be 0200 for 2am in the morning)

Setting LG Nortel LDK/IPLDK systems

All LDK/IPLDK systems use a designated handset, the Attendant station, as the control panel for the telephone system. To find the Attendant station on your system, dial '0' and it will be the phone that rings in response. From this handset, perform the following steps:

  1. Press Trans/Pgm button, then dial 041 to reach the time screen.

  2. Dial the date to be set, in the format 'MMDDYY' and press Hold/Save. (That would be 032507 for 25th March 2007)

  3. Dial the time to be set in the format 'HHMM' and press Hold/Save. (That would be 0200 for 2am in the morning)

You should hear a beep to confirm the change, and the time now shown on the LCD display of the handset should be the one you just entered.

Setting Ericsson LG IPECS/UCP systems

All IPECS systems use a designated handset, the Attendant station, as the control panel for the telephone system. To find the Attendant station on your system, dial '0' and it will be the phone that rings in response. From this handset, perform the following steps:

  1. Press Trans/Pgm button, then dial 041 to reach the time screen.

  2. Dial the date to be set, in the format 'MMDDYY' and press OK *. (That would be 032507 for 25th March 2007)

  3. Dial the time to be set in the format 'HHMM' and press OK *. (That would be 0200 for 2am in the morning)

The time now shown on the LCD display of the handset should be the one you just entered.


* The OK button is circular and can be found in the centre of the ring of navigation buttons.

Setting Samsung systems

All Samsung systems may be programmed from any system display phone connected to the system. To set the system clock to a new time:

  1. Press the Transfer button, then dial 200.

  2. Follow up by dialing the sequence 1234. The display will now show the word 'DISABLE'. Toggle this to 'ENABLE' by pressing the Volume + button (top left on key panel), then press Speaker and then 505.

  3. Dial the new date and time to be set in the format 'WMMDDYYHHMM' and press Transfer.
    (That would be 70325070200 for 2am in the morning on Sunday 25th March 2007. Note W stands for day of the week where 1 is Monday and 7 is Sunday)

Setting Avaya IP Office systems

All Avaya IP Office systems perform a system check on reboot. One of the tests is to check the system clock against a 'time server', using a pointer configured to point at a designated PC running IP Office Manager software.

If the time on the IP Office system is wrong, simply reboot the system, having checked the computer designated as the 'time server' is on, has been time, and has IP Office Manager running. The IP Office system will interrogate the 'time server' as part of the standard boot up routine, and the updated time will be set on the system.

If your IP Office system does not have an active instance of the IP Office Manager software installed on a local PC, or you do not know which PC acts as the Office manger server, please contact our Technical Services Department on 0151 650 0065.