Prestige 2302 Support Notes
All contents copyright (c) 2005 ZyXEL Communications Corporation.
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It is NOT recommended that you install a NAT router in front of the Prestige as this may cause unexpected
problems. If you still want to install a NAT router, use a VoIP ATA (VoIP Analog Telephone Adapter), such as
the Prestige ATA series, instead.
I can make or receive a call but the voice traffic only goes one way, not both way
If you can register to a server and can only make an out- going call but cannot receive incoming calls or the
incoming call signal establishment can be made but the voice traffic only goes one way, there is very likely a
NAT/firewall router installed before the Prestige. Refer to the NAT/firewall related questions for more
information.
I have tried all the troubleshooting steps, but still cannot register to the SIP server. What
should I do next?
In this case, contact your local service provider for support. If they cannot solve your problem, they will send
your problem to the ZyXEL global technical support center. help out the problem they will escalate your
problem to ZyXEL tech center.
To help us solve your problem quickly, please prepared the following information.
1. Serial number of the device.
2. SIP Call server type and service provider.
3. Your device firmware version and romfile (or the configuration file) with the administrator login password.
4. Detail information of what you have tried to resolve the problem.
What should I do if there may be a hardware problem with my Prestige?
Refer to the troubleshooting section in the user’s guide for basic hardware troubleshooting and diagnostic
tips. If the hardware problem persists after you have followed the User’s Guide to remedy the problem,
contact your ZyXEL local vendor and send the device in for service (with an RMA number).
