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Administrator Guide – AzaCall200 VOIP Multi-Protocol Gateway
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If the user has a fixed IP address from a service like Metro-Ethernet…
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Without an NAT device between gateway device and Ethernet wall socket
Plug one end of the RJ-45 Ethernet cable into the WAN port of the gateway
device and plug the other end directly into Ethernet socket in the wall.
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With an NAT device between gateway device and Ethernet wall socket
In contrast to the without-NAT scenario above, please first connect the gateway
device to the NAT device using an RJ-45 cable, then connect the NAT device to
the Ethernet wall socket with an RJ-45 cable.
Figure 3
Connectivity diagram for Metro-Ethernet connection