n.拨号;呼叫
动词dial的现在分词.
I can't hear if my modem is dialing. 我无法听到调制解调器是否在拨号。
Each dialing rule determines the types of calls that users within a dialing rule group can make. 每个拨号规则确定拨号规则组内的用户可以拨打的呼叫的类型。