Is the HP LaserJet Pro MFP M127 compatible with digital phone lines for faxing?

The printer is designed specifically for use with traditional analog phone services, and HP recommends using it on a dedicated analog telephone line. For digital phone environments such as DSL/ADSL, PBX, ISDN, or FoIP, digital-to-analog filters or converters may be necessary. Compatibility with all digital service lines or providers is not guaranteed, so you should contact your phone company to determine the best setup options. (Page 10)