GS1900 Series User’s Guide
246
A PPENDIX A
C usto m e r Suppo rt
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.
See
https://www.zyxe l.c o m/ho me p a g e .shtml and also
https://www.zyxe l.c o m/ab o ut_zyxe l/zyxe l_wo rldwide .shtml for the latest information.
Please have the following information ready when you contact an office.
Re q uire d Info rm a tio n
• 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.
C o rpo ra te He a dqua rte rs (Wo rldwide )
Ta iwa n
• Zyxel Communications Corporation
• http://www.zyxel.com
Asia
C hina
• 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/
Ka za khsta n
•Zyxel Kazakhstan
• https://www.zyxel.kz
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