| Abbreviation | Definition |
|---|---|
| MCET | Massachusetts Corporation for Educational Telecommunications |
| MCFI | Multiple number Call Forwarding Inhibit |
| MCN | Mittweidaer CampusNet |
| MCP | Mobile Centered Paging |
| MCPC | Multiple Channels Per Carrier |
| MCS | Modular Cable Split |
| MCS | Multipoint Communication Service |
| M-CSI | Mobility management CAMEL (Customized Applications for Mobile network Enhanced Logic) Subscription Information |
| MC-SS | Multi-Carrier Spread Spectrum |
| MCTA | Michigan Cable Telecommunications Association |
| MCTA | Mississippi Cable Telecommunications Association |
| MCTA | Missouri Cable Telecommunications Association |
| MCU | Metered Call Unit |
| MCU | Multipoint Control Unit |
| MDA | Model Driven Architecture |
| MDACT | Mounted-Data Automated Communications Terminal |
| MDC | Monthly Demand Charge |
| MDCNZ | Monthly Demand Charge for Non-Zone network Load |
| MDCP | Media Device Control Protocol |
| MDCZ | Monthly Demand Charge for a Zone |