ZyXEL Communications P-2302R-P1C 用户手册

P2302R-P1C Support Notes

All contents Copyright



2007 ZyXEL Communications Corporation.

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How do I used the reset button, more over what field of parameter will be

reset by reset button? ................................................................................. 106

What network interface does the new ZyXEL Device support? ................ 106

How does the ZyXEL Device support TFTP? ........................................... 107

Can the ZyXEL Device support TFTP over WAN? ................................... 107

How can I upload data to outside Internet over the one-way cable? ......... 107

How fast can the data go? .......................................................................... 107

My ZyXEL Device can not get an IP address from the ISP to connect to

the Internet, what can I do? ........................................................................ 108

What is BOOTP/DHCP?............................................................................ 110

What is DDNS?.......................................................................................... 110

When do I need DDNS service? ................................................................ 111

What DDNS servers does the ZyXEL Device support? ............................ 111

What is DDNS wildcard? ........................................................................... 111

Does the ZyXEL Device support DDNS wildcard? .................................. 111

Can the ZyXEL Device SUA handle IPsec packets sent by the VPN

gateway behind ZyXEL Device? ............................................................... 111

How do I setup my ZyXEL Device for routing IPsec packets over SUA? 112

VoIP FAQ ........................................................................................................... 112

What is Voice over IP? .............................................................................. 112

How does Voice over IP work? ................................................................. 112

Why use VoIP? .......................................................................................... 112

What is the relationship between codec and VoIP? ................................... 113

What advantage does Voice over IP can provide? ..................................... 113

What is the difference between H.323 and SIP? ........................................ 113

Can H.323 and SIP interoperate with one another? ................................... 113

What is voice quality? ................................................................................ 113

How are voice quality normally rated? ...................................................... 113

What is codec? ........................................................................................... 114

What is the relation of codec and VoIP? ................................................... 114

What codec does the ZyXEL Device support? .......................................... 114

Which codec should I choose? ................................................................... 114

What do I need in order to use SIP? .......................................................... 114

Unable to register with the SIP server?...................................................... 115

I can register but can not establish a call? .................................................. 115

I can make a call but the voice only goes one way not in both ways? ....... 115

I can receive a call but the voice only goes one way not bothway? .......... 115