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Prestige 2304 Support Notes
All contents copyright (c) 2005 ZyXEL Communications Corporation.
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What is DDNS?............................................................................................89
When do I need DDNS service? ..................................................................89
What DDNS servers does the Prestige support?..........................................89
What is DDNS wildcard?.............................................................................89
Does the Prestige support DDNS wildcard?................................................90
Can the Prestige SUA handle IPsec packets sent by the VPN gateway
behind Prestige?...........................................................................................90
How do I setup my Prestige for routing IPsec packets over SUA? .............90
VoIP FAQ.............................................................................................................90
What is Voice over IP? ................................................................................90
How does Voice over IP work? ...................................................................90
Why use VoIP? ............................................................................................91
What is the relationship between codec and VoIP?.....................................91
What advantage does Voice over IP can provide?.......................................91
What is the difference between H.323 and SIP?..........................................91
Can H.323 and SIP interoperate with one another?.....................................91
What is voice quality?..................................................................................92
How are voice quality normally rated?........................................................92
What is codec?.............................................................................................92
What is the relation of codec and VoIP? .....................................................92
What codec does Prestige support?..............................................................92
Which codec should I choose?.....................................................................92
What do I need in order to use SIP? ............................................................93
Unable to register with the SIP server?........................................................93
I can register but can not establish a call?....................................................93
I can make a call but the voice only goes one way not bothway? ...............94
I can receive a call but the voice only goes one way not bothway? ............94
If all the about have been tried, but register still fail what should I do?......94
I suspect there is a hardware problem with my Prestige what should I do? 94
Trouble Shooting........................................................................................................94
Unable to Get WAN IP from ISP.........................................................................94
Using Embedded Packet Trace ............................................................................98
Debug PPPoE Connection .................................................................................113
CLI Command List..................................................................................................124