Connecting a voice logger to the extension lines that come from a PBX offers the most recording data and options and should always be considered as your first option. Unlike recording from the trunk or handset, attaching a voice logger to your extension lines requires that your voice logger be compatible with your PBX. This is because the PBX literally communicates its information to the voice logger. Most Major PBXs from manufacturers such as Avaya, Cisco, NEC, Nortel and Panasonic are supported. The lines between the voice logger and where you are tapping your extension lines should generally be no longer than 30 feet to insure that the signal quality of the recordings stays strong. One of the advantages of recording from the extension is that the voice logging software will gather call data directly from the PBX and append it to each recording. This information usually includes the extension making the call, the caller ID, or if the call was outbound or inbound.