ZyXEL Communications 2602HWL-DXA manual VoIP FAQ

Prestige 2602HWL-DxA Support Notes
Is it possible to access a server running behind SUA from the outside
Internet? If possible, how?	156
What DHCP capability does the Prestige support?	156
How do I used the reset button, more over what field of parameter will be
reset by reset button?	157
What network interface does the new Prestige series support?	157
How does the Prestige support TFTP?	157
Can the Prestige support TFTP over WAN?	157
How fast can the data go?	157
What is Multi-NAT?	158
When do I need Multi-NAT?	158
What IP/Port mapping does Multi-NAT support?	159
What is the difference between SUA and Multi-NAT?	160
What is BOOTP/DHCP?	160
What is DDNS?	161
When do I need DDNS service?	161
What DDNS servers does the Prestige support?	161
What is DDNS wildcard?	161
Does the Prestige support DDNS wildcard?	161
Can the Prestige SUA handle IPsec packets sent by the VPN gateway
behind Prestige?	162
How do I setup my Prestige for routing IPsec packets over SUA?	162
PSTN Lifeline FAQ	162
What is P2602 and what is the difference between P2602HW and
P2602HWL?	162
What does Lifeline mean?	162
Do I need Lifeline?	162
Can I connect more than one phone on the phone port?	163
Can I receive incoming PSTN call through P2602HWL- 6xC?	163
Can I make an outgoing PSTN call through P2602HWL – 6xC?	163
VoIP FAQ	163
What is Voice over IP?	163
How does Voice over IP work?	163
Why use VoIP?	163
What is the relationship between codec and VoIP?	164
What advantage does Voice over IP can provide?	164
What is the difference between H.323 and SIP?	164
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