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
