Network - to - network interface between public data networks providing the frame relay data transmission service 提供幀中繼數(shù)據(jù)傳輸業(yè)務(wù)的公用數(shù)據(jù)網(wǎng)之間的網(wǎng)絡(luò)?網(wǎng)絡(luò)接口
百科解釋
In telecommunications, a network-to-network Interface (NNI) is an interface which specifies signaling and management functions between two networks. NNI circuit can be used for interconnection of either signalling (e.