  The discovery of frame-dragging effects in binary pulsar timing experiments
requires a compact companion with sufficiently large spin. A pulsar orbiting a
fast rotating black hole could provide an appropriate test system. In this
paper we address questions concerning the identification of a black hole
companion in such a system, the measurability of the frame dragging caused by
the rotation of the black hole, and the measurability of the quadrupole moment,
which would prove the presence of a Kerr black hole.
