Abstract: This invention relates to a system consisting of a logical network of units capable of digital communication managed by servers and databases. Such units include LCDs, LEDs, digital billboard, and digital cameras, as well as the technology infrastructure of business entities. The system utilizes user requirements, system configurations, and real-time data to manage transmission of data, including multi-media data such as advertisements. Additionally, the system uses unit groups and hierarchies to select and synchronize communications among units. The relational aspect of units within the logical network also provides a framework for data layering of the communication streams. Existing systems consider units, such as mobile telephones, as stand-alone and provide no relational consideration in controlling data communications. This system targets this deficiency within the marketplace and improves the opportunities that digital units provide.