SDSL:Symmetric Digital Subscriber Loop,对称数字用户环路。关联词:DSL
SDV:Switched Digital Video,交换型数字视像。关联词:IDV
SIG:Special Interest Group,(蓝牙)特殊兴趣小组
SNI:Service Node Interface,业务节点接口。关联词:UNI
SWAP:Share Wireless Access Protocol,共享无线接入协议