Abstract: A preferred fax/data interface apparatus (10) enables the use of a conventional analog fax machine (20) on a wireless local loop (WLL) (12). The wireless local loop (12) includes a WLL terminal (14) having a telephone line (16) connected to the analog telephone port (18) thereof with an analog fax machine (20) connected to the telephone line (16), and with the fax/data interface (10) connected between the data port (26) of the WLL terminal (14) and the telephone line (16). The interface (10) receives analog fax signals from the fax machine (20) over the telephone line (16) and converts the analog fax signals to digital fax signals for delivery to the data port (26) of the WLL terminal (14) for wireless PCS transmission.