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XGS2220 Series User’s Guide
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APPENDIX A
Customer Support
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 https://service-provider.zyxel.com/global/en/contact-us for the
latest information.
For Zyxel Networks offices, see https://www.zyxel.com/index.shtml for the latest information.
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 (Taiwan) Co., Ltd.
• https://www.zyxel.com
Asia
China
• Zyxel Communications Corporation–China Office
• https://www.zyxel.com/cn/sc
India
• Zyxel Communications Corporation–India Office
• https://www.zyxel.com/in/en-in
Kazakhstan
•Zyxel Kazakhstan
• https://www.zyxel.com/ru/ru
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