ZyXEL Communications P-2000W V2 - Manual (Page 3)

P2000W V2 Troubleshooting Guide
Table of Contents iii
Customer Support
Please have the following information ready when you contact customer support.
• Product model and serial number.
• Firmware version of your device.
• Brief description of the problem and the steps you took to solve it.
• Call server type and vendor.
• Packet trace log as instructed on the troubleshooting in this guide.
Table of Contents
Introduction............................................................................................................................................Page 4
Frequently asked question ....................................................................................................................Page 4
VoIP troubleshooting .............................................................................................................................Page 9
The VoIP Challenge ...............................................................................................................................Page 14