  For removal of disrupted beams at the ILC linear e+e- collider it is
desirable to collide beams at some crossing angle. An especially large crossing
angle, of about 25 mrad, is necessary for the photon collider, where disrupted
beams are softer and wider than in the e+e- case. Some complications arise due
to the solenoidal magnetic field of the detector. Radiation of particles in
this field can increase the vertical beam size, leading to a loss of the
luminosity. In addition, in the presence of a detector magnetic field the beam
trajectories are not flat. Moreover, in the case of e-e- beams, the vertical
collision angle is non-zero and larger than the beam diagonal angle
sigma_y/sigma_z, and this should be corrected in some way. In this paper,
possible solutions of these problems are considered. It is shown that at the
ILC one can have the interaction region compatible both with e+e- and
gamma-gamma, gamma-e modes of operation without loss of luminosity.
