NGOSS:New Generation Operational System and Software,新一代运营系统和软件。
NSIS:Next Step In Signaling,下一代QoS信令
NSP:National Signalling Point,国内信令点
NSPC:National Signalling Point Code,国内信令点编码。关联词:ISPC
NSTP:National Signalling Transfer Point,国内信令转接点