Click on the logos below to view the clock change guide of your choice
Opus Telecoms are here to support you when changing the time of your telephone system.
Please click on the relevant manufacturer below to access our quick and easy guide to changing the time of your telephone system:
Note: The guides are useful when adjusting the clock for daylight saving time (DST) or British Summer Time (BST) from Greenwich Mean Time (GMT).
Please contact us should you require any further assistance