  We study transport between Quantum Hall (QH) edge states at filling factor
$\nu = 1$ in the presence of electron-acoustic-phonon coupling. Performing a
Bogoliubov-Valatin (BV) trasformation the low-energy spectrum of interacting
electron-phonon system is presented. The electron-phonon interaction splits the
spectrum into charged and neutral "downstream" and neutral "upstream" modes
with different velocities. In the regimes of dc and periodic ac biases the
tunelling current and non-equilibrium finite frequency non-symmetrized noise
are calculated perturbatively in tunneling coupling of quantum point contact
(QPC). We show that the presence of electron-phonon interaction strongly
modifies noise and current relations compared to free-fermion case.
