| 1. | Circait - switched data - transmission service 电路交换数据传输服务 |
| 2. | Packet - switched data - transmission service 封包交换数据传输服务 |
| 3. | Internal coating of line pipe for non - corrosive transmission service 防腐蚀性气体输送用管线管内涂层 |
| 4. | T1e1 with g . 703 interface provides framed or unframed transmission service 703标准接口的t1e1可提供含帧格式或不含帧格式的传输服务 |
| 5. | Frame relay services - part 3 : frame relay data transmission service - service definition 帧中继业务.第3部分:帧中继数据传输业务.业务定义 |
| 6. | Packet - switched signalling system between public networks providing data transmission services 提供数据传输业务的公用网之间的分组交换信令系统 |
| 7. | International data transmission services and optional user facilities in public data networks and isdns 公用数据网与isdn网的国际数据传输业务和任选用户设施 |
| 8. | Network - to - network interface between public data networks providing the frame relay data transmission service 提供帧中继数据传输业务的公用数据网之间的网络?网络接口 |
| 9. | Consists of network equipment that provide ip transmission service , such as routers , lan switching , etc 主要由提供ip传送服务的网络设备如路由器、 lan交换机等组成。 |
| 10. | Structure provides framed and unframed e1t1 data transmission services to fulfill customer needs within an affordable cost 提供含帧格式或不含帧格式的e1t1数据传输服务。 |