An integrated telecommunication service system, including one or more digital signal processing modules processing voice signals and signaling and independent from each other. The membranes are generally characterized by providing a permeability ratio of oxygen to glucose of about 1 to about 1000 in units of per. 75 mol % andor a silver bromide content of 0. The hybrid solar light diffuser is coupled to a lower portion of the support frame and includes a diffusion plate and diffusion lenses which are provided on the diffusion plate at positions corresponding to the respective optical fibers.