An embodiment of a system, method, and apparatus for facilitating wideband audio communication and digital subscriber line data communication includes a filter configured to be coupled to a line conditioning coil. The line conditioning coil includes a frequency response having a first passband extending over a portion of a narrowband voice frequency range, a second passband extending over a portion of a digital subscriber line frequency range. The line conditioning coil further includes a frequency notch having a frequency range between the first passband and the second passband. The frequency notch attenuates signals over a portion of a wideband audio frequency range. The filter has a cut-off frequency below the frequency notch and a passband extending over at least a portion of the frequency notch. The filter is configured to amplify signals within the frequency range of the frequency notch to compensate for the attenuation caused by the frequency notch.