Instruction/ maintenance manual of the product P-2000W V2 ZyXEL Communications
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P-2000W V2 VoIP wireless phone Troubleshooting Guide May 2005.
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P2000W V2 Troubleshooting Guide Table of Contents iii Customer Support Please have the following information ready w hen 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.
P2000W V2 Troubleshooting Guide All contents copyright (c) 2005 ZyXEL Communications Corporation. Introduction The Prestige P2000W V2 is a SIP-based Vo IP wireless pho ne. Sending v oice signals over the Internet is called Voi ce over IP or VoIP. Session Initiated Protocol (SIP) is an internationally recognized st andard for implementing SIP.
P2000W V2 Troubleshooting Guide All contents copyright (c) 2005 ZyXEL Communications Corporation. 1. What is VoIP? Voice ov er IP is an eme rgi ng te chno logy base d on op en stan dar ds of IEEE, fundamentally the Internet Protocol that allows voice data to t ravel across the Internet.
P2000W V2 Troubleshooting Guide All contents copyright (c) 2005 ZyXEL Communications Corporation. 6. What is the difference between H.323 and SIP ? H.323 and SIP are propose d by different group Session Initiation Protocol (SIP) is a standard introduced by the Internet Engineering Task For ce in 1999 t o carry voice over IP.
P2000W V2 Troubleshooting Guide All contents copyright (c) 2005 ZyXEL Communications Corporation. Voice quality is most commonly rated through a voice quality metric called the Mean Opinion Score (MOS) whic h is recommen dation by ITU-T. The MOS is a 5 point scale where 5 represent excellent voice quality and 1 represent bad voice quality.
P2000W V2 Troubleshooting Guide All contents copyright (c) 2005 ZyXEL Communications Corporation. 1. Power off the device. 2. Keep ho ld down the Power and Left-S electo r button until you see <<Load Default>> <<Factory>> words in the LCD scre en than release it .
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 Troubleshooti ng Is it a hardw are prob lem? How can I check if problem is cause by NAT or not? If I've confirmed it is not an NAT.
P2000W V2 Troubleshooting Guide All contents copyright (c) 2005 ZyXEL Communications Corporation. 2. How can I check if problem is c ause by NAT or not? There may not be an easy or quick ans wer to this question.
P2000W V2 Troubleshooting Guide All contents copyright (c) 2005 ZyXEL Communications Corporation. 5. I can register but can not establish a call? If you can register to server but can not make a call v ery likely there is NAT router before it, please see NAT related question above for tips to troubleshoot.
P2000W V2 Troubleshooting Guide All contents copyright (c) 2005 ZyXEL Communications Corporation. 9. The support tells me, I may have an interope rability issue with my ITSP call server.
P2000W V2 Troubleshooting Guide All contents copyright (c) 2005 ZyXEL Communications Corporation. 3. Start packet sniffing software and start packet capturing. 4. St art P2 000W V2 a nd mak e a com plete cal l from re giste ring to ca lli ng a party until problem appears.
P2000W V2 Troubleshooting Guide All contents copyright (c) 2005 ZyXEL Communications Corporation. The corrected working capture should include starting of the call (The SIP invite) to call pickup (The SIP ACK). An example of succe ssful call capture is listed below for your reference.
P2000W V2 Troubleshooting Guide All contents copyright (c) 2005 ZyXEL Communications Corporation. Fortunately, there are already ways to wo rkaround the NAT for SIP. The most commonly used w ay is listed b elow. SIP pass-through support on NAT router (re quire router vendor implement it).
An important point after buying a device ZyXEL Communications P-2000W V2 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought ZyXEL Communications P-2000W V2 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data ZyXEL Communications P-2000W V2 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, ZyXEL Communications P-2000W V2 you will learn all the available features of the product, as well as information on its operation. The information that you get ZyXEL Communications P-2000W V2 will certainly help you make a decision on the purchase.
If you already are a holder of ZyXEL Communications P-2000W V2, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime ZyXEL Communications P-2000W V2.
However, one of the most important roles played by the user manual is to help in solving problems with ZyXEL Communications P-2000W V2. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device ZyXEL Communications P-2000W V2 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
