信: letter; mail令: order; command; decree点: drop编码: encoded; code; coded; encryp ...源信令点编码: opc originating point code; opc origination point code; originating signaling point code国际信令点编码: international signaling point code目的地信令点编码: dpc destination point code目的信令点编码: destination signalling point code; dpc destination (signaling)point code; dpc destination point code起始信令点编码: original point code信令点编号计划: signaling point numbering plan信令点: ssignalling point国际信令点: isinternational signaling point国内信令点: nsnational signaling point近端信令点: nesnear end signaling point邻近信令点: adjacent signaling points目的信令点: destination signaling point全乖信令点: ns national signaling point信令点代码: spc signaling point code源信令点: original signaling point低电平信令点: ls lower level signaling point非邻近信令点: non-adjacent signaling points国际信令点码: ispc international signaling point code信令点再启动: signaling point restart源信号点编码: original point code opc信令点接入禁止: signaling point access-prohibited sppc