A speech enhancement system that improves the intelligibility and the perceived quality of processed speech includes a frequency transformer and a spectral compressor. An administration authority web site is provided that enables an owner of a wireless camera to log into a server and establish a set of control policies that specify what actions on the phone are authorized for what user. Two terminals of the power semiconductor circuit are led out of the module housing, a first of the at least two terminals being provided for the contact connection of the cover plate. Valid data recalled from the extended disk buffer memory can be used directly by the processor without going to the disk drive. These improved techniques are particularly suitable for use with a digital multicarrier communication system having multiple-input multiple-output systems.