缩写	全称	中文释义
PRS	Primary Reference Source	主要参考源
SINAD	SIgnal-to-(Noise And Distortion) ratio	信噪比
MF	Multiple Frequency	多频
PIB	Policy Information Base	政策信息库
PSNEXT	Power Sum Near End Cross Talk	功率和近端串扰
D/I	Drop and Insert	跌落和插入
FL	Fiber Link	光纤链路
FUNI	Frame (relay) User Network Interface	帧（中继）用户网络接口
IXC	Inter-eXchange Carrier	交换承运人
SMDS	Switched Multi-megabit Data Service	交换式多兆位数据服务