ZyXEL Communications P-2000W V2 manual VoIP Troubleshooting, Can P2000W V2 support STUN?

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P2000W V2 Troubleshooting Guide

19. Can P2000W V2 support STUN?

Yes, P2000W V2 can support STUN.

VoIP Troubleshooting

Is it a hardware problem?

How can I check if problem is cause by NAT or not? If I've confirmed it is not an NAT. What should I do? Unable to register with the SIP server?

I can register but can not establish a call?

I can make a call but the voice only goes one way not bothway? I can receive a call but the voice only goes one way not bothway? If all the about have been tried, but register still fail or call still have problem to be made behind the NAT what should I do?

The support tells me, I may have an interoperabiltiy issue with my ITSP call server. Packet trace is requested by support to analyze the problem. Should I setup the environment and how do I trace the packet?

1. Is it a hardware problem?

If following symptoms happen on the P2000W V2

LCD display does not show “Initializing please wait message” when turn on

1.Make sure the battery of the phone is fully charged.

2.You are using the charger base and power adapter to charge and the power adapter are plugged in to an appropriate power source.

3.Check that the power source is turned on. If the problem persists, you may have a hardware problem. In this case, you should contact your local vendor.

The P2000W V2 sometimes shut down automatically

Check if the battery on P2000W V2 is too low. Check that the P2000W V2 is fully charged, if it is fully charge but standby time relatively low the battery may need to be replaced.

All contents copyright (c) 2005 ZyXEL Communications Corporation.

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Contents 2000W VoIP wireless phonePage Customer Support Frequently Asked Question IntroductionWhy use IP for voice? What is VoIP?What is the relationship between codec and VoIP? What advantage does VoIP can provide? What is voice quality? What is the difference between H.323 and SIP? Can H.323 and SIP interoperate with one another? What do I need in order to use SIP?What is the relation of codec and VoIP? What is codec?How do I reset the device to factory default? Which codec should I choose?Can P2000W V2 support outbound proxy? What is the P2000W V2 supported Codec?VoIP Troubleshooting Is it a hardware problem?Can P2000W V2 support STUN? How can I check if problem is cause by NAT or not? If Ive confirmed it is an NAT problem. What should I do?Unable to register with the SIP server? Can make a call but the voice only goes one way not bothway? Can register but can not establish a call?P2000W V2 Troubleshooting Guide P2000W V2 Troubleshooting Guide VoIP challenge P2000W V2 Troubleshooting Guide