A high speed transmission link for twisted pair, coaxial cable media or the like is provided for converting fiber optic data interface signals into high speed transmission link signals. The transmitter includes a buffer (50) cooperating with an equalizer (52) and a filter (54) for forming the high speed transmission link signal. The equalizer (52) provides frequency domain compensation for the characteristics of the medium (10). The filter (54) rejects signals outside a band of data signaling. The receiver includes a filter (42) connected to the twisted pair medium (10) to reject signals outside a band of data signaling, a buffer (68) for regenerating the signal received from the shielded twisted pair (10) and filtered by said filter (42) and regenerating the signal back to an adequate signal level, and a low frequency restoration circuit (69) which employs a decision feedback technique for the compensation of the media coupling circuit's low frequency response.