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2. Basic Applications of the PBX VoIP Gateway
2.1 Internal Calls
The VoIP Gateway is designed to be the tie trunk of the PBX, which means that when two or more PBXs are
tied with VoIP connections, the extension line on the remote PBX will function as an extension of the local
PBX. The following graphic is an example of this concept. The user at the extension on the PBX VoIP
gateway with the prefix code "2" can dial "9" plus "*7209" to connect to extension 209 of the PBX that has
the PBX VoIP gateway with the prefix "7", where “9” is the trunk group select code of PBX.