Configuring "liveGate" and "liveGate for Intranets" for the 3COM NBX

3COM's Richard O'Connor has written the following instructions (edited slightly for clarity) for NBX users.

Solution to enable off-premise paging and conferencing for the NBX 100

Problem

Remote IP telephones routed through the Internet, a firewall, or over a non-IGMP compliant router do not receive pages, or participate in conference calls.

Solution

Provide an IP-in-IP multicast tunnel from the network with the phone server to the network with the remote IP telephones. This should also work for the NBX SuperStack 3.

Change all paging buttons from ext. 6021 (Internal Paging) to use ext. 6022 (Internal + External paging).
Download and extract "liveGate" from http://www.live555.com/liveGate/ to a computer located on the same network as the NBX 100 phone server. In Notepad create a new file and type:
```
liveGate_createTunnel <IP address of a computer on the remote network>
```
Type this for each remote network. When you are finished, save the file in the same directory as "liveGate.exe", with the name "liveGateInit". Do not use a file extension when saving this file.
Run "livegate.exe" from the Command Prompt. Minimize it.
On each computer listed in the "liveGateInit" file on the "liveGate.exe" server, download and install "liveGate for Intranets". In Notepad create a new file and type:
```
liveGate_createTunnel <IP address of the "liveGate" server>
```
Then copy and paste the following text into Notepad:
```
foreach portNum {1025 1040 2093 2094 2095 2096} {
    foreach addrSuffix {3 19 23 31 35 39 43 55 59} {
        liveGate_startRelaying 224.0.1.$addrSuffix $portNum 50 nbx
    }
}
```
When you are finished, save the file in the same directory as "liveGateforIntranets.exe", with the name "liveGateInit". Do not use a file extension when saving this file.
Run "liveGateforIntranets.exe" from the Command Prompt. Minimize it.

Your NBX 100 phone network should now support remote paging and call conferencing.

The liveGate connectivity is established in a star topology with "liveGate" at the center, and "liveGateforIntranets" is repeated along the periphery. I hope this helps.

Richard O'Connor/US/3Com

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