quantum-espresso/test-suite/epw_soc/ph.in

--
&inputph
  prefix   = 'pb'
  fildvscf = 'dvscf'
  ldisp    = .true
  outdir   = './'
  fildyn   = 'pb.dyn'
  nq1=3,
  nq2=3,
  nq3=3,
  tr2_ph   =  1.0d-12
 /