Abstract: Methods and systems are disclosed that allow for the exchange of voice mail messages between different VMSs of different service providers and/or in different networks by the transmission of such messages through a data network using a standard protocol of the data network. Methods and systems also are disclosed that validate message transactions among subscribers receiving regional messaging services over the PSTN. The subscribers are located in different geographic areas and may be provided their voice, facsimile or data messaging services by different companies. The present invention validates passing messages (data) among customers of potentially different companies located in different areas by assessing the validity of the transaction in light of a number of conditions, including applicable regulatory or business conditions.

Abstract: A method for creating an enhanced seismic image is described. Seismic data is acquired from a seismic survey conducted over a subterranean region. The seismic data is transformed into energy components, preferably Gaussian beam components. An earth model is created which is comprised of lens elements. The set of energy components is propagated or migrated through the lens elements to form image components which are combined into a seismic image. A target is identified in the seismic image for image enhancement. Ray tracing may be used to select the trial set of lens elements to be updated and to select a subset of energy components. The subset of energy components is propagated through updated earth model to form updated image components. The seismic image is updated by replacing image components with updated image components which are formed from the subset of selected energy components. This subset is ideally greatly reduced in size relative to the overall number of energy components, i.e., beam components.