3. Advanced Setup
It would be simple if every VoIP gateway, or computer that connects to the Internet
could have its own static IP number, but when the Internet was first conceived, the
architects didn't foresee the need for an unlimited number of IP addresses.
Consequently, there are not enough IP numbers to go around and we use the NAT
device or router connects our local area network (LAN), or the group of PCs in your
home or office, to the Internet. In this section, we will show you how to configure your
SP5001A/S behind the NAT device if your SP5001A/S acts standalone device in your
network.
3.1. Behinds the NAT Router (P2P Mode)
When you place the SP5001A/S behinds the NAT router in P2P Mode, a few more
settings need to configure on the SP5001A/S and router.
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