D-Link DGS-3024 - Switch Manual page 181

Technical Support
You can find software updates and user documentation on the D-Link website.
D-Link provides free technical support for customers
for the duration of the warranty period on this product.
Customers can contact D-Link technical support through our web site or by phone.
Tech Support for customers within the Russia
D-Link Technical Support over the Telephone:
(495) 744-00-99
Monday to Friday 10:00am to 6:30pm
D-Link Technical Support over the Internet
http://www.dlink.ru
email: support@dlink.ru