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Enhanced Network Proxy (ENP)
This guide will show how to do a typical configuration of ENP while we use FreePBX as an IP-PBX. Below is the network diagram for complete details. In this setup a single subnet was used, but the same steps can be followed for a PBX in the cloud type setup where multiple sub-nets are involved. Also notice here that the Vega50 is shown as two entities, one being the ENP and the other being the gateway. This is because the ENP is a "service" that is separate from the Vega gateway, but shares the same hardware. As well note the port of the gateway has been changed to 5062 and the port of ENP has been changed to 5060.
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Next add each extensions username and password into the "SIP Proxy Auth Users" section ensuring each is enabled. In our example, we have 1001 and 1002 for ip phones and 0101-0104 for FXS ports and Once your extensions are registered you will see them listed in the "SIP Proxy Registered Users" section. We need to have same user and password in Freepbx, at the end of this page you will see how to add these extensions in FreePBX.
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Note: If you do not want to duplicate the usernames and passwords on the Vega you can simply trust your entire subnet. This will tell the Vega to accept all registrations from the LAN without requesting a password. If the ITSP is up then a password will be requested from each phone. Only in the event of the ITSP failure will a password not be required from the specified LAN. For details on how to configure this go to Trust LAN when ITSP is Down. |
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Step 2: Continue scroll down the page until you see the following sections. You can leave the filters empty, but this can be used to white list and blacklist certain IPs. Now go to the SIP ITSP Proxies section and enter your FreePBX's IP and port into the fields provided. You can also decrease the test interval as shown here down to a lower value of 10ms. Decreasing the test interval will cause options messages to be sent to your FreePBX more often, therefore when if the FreePBX goes down ENP will know about this within 10ms. Also ensure proxy test is set to "options".
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