CCITT High Level Language
- (computing) a procedural programming language of the CCITT designed for use in telecommunication switches and still in use for legacy systems in some telecommunication companies and for signal box programming.
1978, Third International Conference on Software Engineering for Telecommunication Switching Systems, 27-29 June, 1978[1], Institution of Electrical Engineers, page 36:THE CCITT HIGH LEVEL PROGRAMMING LANGUAGE
1980, Robert M. Fenichel, Introduction to the CCITT High Level Language[2], Defense Technical Information Center:Introduction to the CCITT High Level Language (title)
2006, P. Gnanasivam, Telecommunication Switching and Networks[3], New Age International, page 130:This language is known as CCITT high level language (CHILL).