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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