当被呼移动用户忙时的呼叫转 meaning in English
calling forwarding on mobile su criber busy （cfb）
calling forwarding on mobile subscriber busy (cfb)
calling forwarding on mobile subscriber busy （cfb）
callingforwardingonmobilesu criberbusy（cfb）
Examples
- Calling forwarding on mobile subscriber busy cf
当被呼移动用户忙时的呼叫转