One day it is a frame relay switch, the next it is your ISDN router.

这一天是帧中继交换机，这是你们未来的ISDN路由器。

youdao

VOFR? Voice Over Frame Relay?

帧中继语音传送?。

youdao

Frame Relay Switch Node?

帧中继转换节点FRSN ？

youdao

Frame Relay Bearer Service?

帧中继运载服务FRBS ？

youdao

Frame Relay Switch?

帧中继转换FRS ？

youdao

Frame Relay Engine?

帧中继引擎FRE ？

youdao

Frame Relay Engine?

帧中继引擎FRE ？

youdao