In this example, the devices in the external zone include the endpoint host (10.1.1.5) and the gatekeeper (10.1.1.25). IP_Phone2 (2.2.2.5) is in Zone2. You configure the J-series device to allow traffic between the endpoint host IP_Phone1 and the gatekeeper in the external zone and the endpoint host IP_Phone2 in the internal zone.
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Before You Begin |
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For background information, read Understanding the H.323 ALG. |
When the J-series device uses NAT, a gatekeeper or endpoint device in the external zone has a private address, and when it is in the internal zone, it has a public address. See Figure 112.
Figure 112: Network Address Translation—Outgoing Calls

You can use either J-Web or the CLI configuration editor to enable outgoing calls.
This topic covers: