Information Technology

Gartner Glossary

CMC (Common Messaging Calls)

A set of calls developed by the X.400 API Association (XAPIA) for use on top of any existing messaging system. Programmers developing applications using these calls may request services of whatever messaging system is accepting the call. The number of calls is limited to the most popular messaging and directory lookup functions. CMC is similar to simple Messaging Application Programming Interface (MAPI) in its breadth of services, but provides greater portability of applications.

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