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8-55
Item
Description
Build-in DDNS of the
device
This option should be selected when the ingress router does not have a static IP
address and nor DDNS support. The device will perform DDNS queries to
determine its external IP address using the provided credentials.
The domain name, user name, and password must be obtained from the DDNS
service provider.
The OM supports the following DDNS service providers: Dyndns.org,
freedns.afraid.org, and www.no-ip.com.
External IP
This option should be selected when the ingress has a static IP address. In the
WAN IP address
field, enter the public IP address of the WAN port on the
router.
External host name
(DDNS on the router)
This option can be selected when the ingress of the external network does not
have a static IP address. You need to enter the DDNS domain name of the WAN
port on the ingress router.
Step 2
Click
Save
.
Step 3
Configure port mapping on the Internet ingress router. Take a New Rock WROC3000 as an
example to show the ingress router configuration:
Item
Description
Host IP address
Enter the IP address of the OM. The current IP address of the device can be seen
in the network part on the
Status
interface of the OM.
Note: It is a must to set a static IP address which can be configured on
Basic
>
Network
page. For the OM80, it is the ETH1 IP address.
Port range
Enter the SIP signaling port and the RTP port range of the OM.
You can go to
Trunk
>
IP trunk
>
Registrar OPTIONS
to view the SIP
signaling port.
You can view the maximum value and minimum value of the RTP port on the
Application
>
Media
interface.
Note: Keep the mapping target port number the same as the port number of the
OM.
Step 4
On the external IP extension, set the registrar address to the IP address or domain name
configured on the
Basic
>
Remote Access
page.
8.1 Registering Remote IP Phones to the OM20
The following describes the registration information using Method 1: Remote Access with Peer-to-Peer
communication across NAT and the NRP1012 as an example.
