ZyXEL Communications P-2000W V2 - Manual (Page 9)

P2000W V2 Troubleshooting Guide
All contents copyright (c) 2005 ZyXEL Communications Corporation.
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.