| Subject | English | Chinese |
| telecom. | switched multi-megabit data service | 交换型多兆位数据业务 (Bellcore 研制的无连接型分组交换业务，即 datagram) |
| space | switched multi-megabit data service | 交换多兆比特数据业务 |
| IT | switched multi-megabit data service | 交换式多兆位数据服务 |
| telecom. | switched multi-megabit data service | 交换型多兆位数据业务 (Bellcore 研制的无连接型分组交换数据通信业务，即 datagram) |