  It has been recently proposed that the broad line region in active galactic
nuclei originates from dusty clouds driven from the accretion disk by radiation
pressure, at a distance from the black hole where the disk is cooler than the
dust sublimation temperature. We test this scenario by checking the consistency
of independent broad line region and accretion disk reverberation measurements,
for a sample of 11 well studied active galactic nuclei. We show that
independent disk and broad line region reverberation mapping measurements are
compatible with a universal disk temperature at the H{\beta} radius of
T[R(H{\beta})]=1670(231) K which is close to typical dust sublimation
temperatures.
