Appendix A Customer Support - ZyXEL Communications XS3800-28 User Manual

In the event of problems that cannot be solved by using this manual, you should contact your vendor. If
you cannot contact your vendor, then contact a Zyxel office for the region in which you bought the
device.
For Zyxel Communications offices, see
latest information.
For Zyxel Networks offices, see
Please have the following information ready when you contact an office.
Required Information
• Product model and serial number.
• Warranty Information.
• Date that you received your device.
• Brief description of the problem and the steps you took to solve it.
Corporate Headquarters (Worldwide)
Taiwan
• Zyxel Communications Corporation
• https://www.zyxel.com
Asia
China
• Zyxel Communications (Shanghai) Corp.
Zyxel Communications (Beijing) Corp.
Zyxel Communications (Tianjin) Corp.
• https://www.zyxel.com/cn/zh/
India
• Zyxel Technology India Pvt Ltd.
• https://www.zyxel.com/in/en/
Kazakhstan
• Zyxel Kazakhstan
• https://www.zyxel.kz
A
Customer Support
https://service-provider.zyxel.com/global/en/contact-us
https://www.zyxel.com/index.shtml
XS3800-28 User's Guide
752
P P E N D I X
for the latest information.
A
for the