Common Application Language for home electronic systems

Home electronic system products and functions from different manufacturers can communicate with each other to exchange control and other information using a flexible and efficient set of services and protocols. An initial set of services and protocols for the exchange of information by application processes in home electronic system products and functions, called the Common Application Language (CAL), has been defined. The language is hierarchical and structured, uses short message formats for simple applications, yet allows long messages to be exchanged by more sophisticated application processes without burden on the simpler.<>