  We analyze Pion Nucleon Scattering up to 700 MeV using a simple,
relativistic, unitary model\cite{1}. The kernel of the integral equation
includes nucleon, roper, delta, D_13 as well as S_11 poles with their
corresponding crossed pole terms approximated by contact interactions. The s-
and p- wave phase shifts are calculated from the model and shown to agree very
well with the values derived from pi N scattering data \cite {2}. All
parameters which involve S_{11} are presented.
