数字: figure; digit; numeral; char ...专用: special use; for a special p ...网: net信: letter; mail令: order; command; decree系统: system模拟专用网信令系统: analog private network signaling system (apnss)数字式私用联网信令系统: dpnss digital private networking signaling system数字访问信令系统: dass digital access signaling system数字接入信令系统: digital access signaling system号信令系统: ccitt signaling system no信令系统: ss signaling system信令系统7: ss7数字专用电路网: dpcn digital private circuit network数字专用分机交换: digital private branch exchange数字专用小交换机: digital x; digital pbx饱和信令系统: saturation signaling system多频信令系统: ssmf signaling system multi-frequency; ssmf signaling system, multi-frequency共路信令系统: ccss common channel signaling system; common channel signaling system no.ccsno国内信令系统: national signaling system七号信令系统: signaling system no. ss; signaling system no.（ss7） ss通道信令系统: css channel signaling system网间信令系统: internetwork signaling system信道信令系统: css channel signaling system音频信令系统: vfss voice frequency signaling system
