Internet Message Access Protocol | Server Message Block | A Message to Garcia | Switching Goals | Specific Area Message Encoding | Short Message Service | The Message in the Hollow Oak | Short message service center | Short message service | Multiprotocol Label Switching | Message Transmission Optimization Mechanism | Message-oriented middleware | message | letter (message) | Java Message Service | Intercept message | Electronic Switching System | Electronic switching system | Digital Message Device | Variable-message sign | variable-message sign | The Cosmonaut's Last Message to the Woman He Once Loved in the Former Soviet Union | short message service center | Short Message Peer-to-Peer | Message Stick | Message Passing Interface | Message passing | Markov switching multifractal | Interface Message Processor | Energy switching services in the UK |
Point to point SX2000 automated telephone exchanges were installed in ROC headquarters and old fashioned telegraph equipment was replaced with modern computerised message switching equipment.
Plan 55-A was an automatic, electromechanical store and forward message switching system.