With ISDN service, signaling that must be conveyed between the user station and the localswitch is carried on a separate digital channel called the D channel.
与必须表达在用户驻地和本地开关之间的ISDN服务，发信号继续称D渠道的一条分开的数字通道。
2
Local residents worry that such a switch would punish older Guangzhou residents who have never learned Mandarin.
当地居民担心这样的转变，会给从没学过普通话的老广州人带来不便。
3
The Virtual File system Switch (VFS) provides the path to exofs, where exofs communicates with the object storage system through a local OSD initiator.
Virtual File System Switch (vfs)为exofs提供一条途径，在其中，exofs通过一个本地osd启动器与对象存储系统通信。