| 缩写 | 全称 | 中文释义 |
|---|---|---|
| ROS | Remote Operations Service | 远程操作服务 |
| NEXT | Near-End CrossTalk | 近端串扰 |
| CSC | Common Signaling Channel | 通用信道 |
| FR PVC | Frame Relay Permanent Virtual Connection | 帧中继永久虚拟连接 |
| MTAU | Metalic Test Access Unit | 金属测试接入单元 |
| ACK | ACKnowledgment | 确认 |
| IDLC | Integrated Digital Loop Carrier | 集成数字环路载波 |
| LDC | LATA (Local Access Transport Area) Distribution Channel | Lata（本地接入传输区）分配通道 |
| SIP | Session Initiation Protocol | 会话启动协议 |
| WML | Wireless Markup Language | 无线标记语言 |