In this work the two dimensional multipath channel for indoor waves propagation is offered. Model based on geometrical optics methods and foresees the determined description of geometrical characteristics of indoor environment. The reflections of radio waves from walls is designed as a reflections from a flat surface with some effective reflectivity coefficient. Offered model and software developed on its basis, allow to define the main parameters of communication channel, such as: channel fading, signal time of arrival, channel impulse response and others.