求教华为传输设备（SDH、WDM）常用单板命名规则，例如T1SXCSA、T2SL64、N1SLQ1、LWMR、LOGS每个字母代表什么含义（或是那个单词的缩写）？

华为传输单板命名规则首字母，表示类型P：PDH单元，例PQ1S：SDH单元，例SD4第二个字母，表示端口/光口数目L：1个端口/光口，例SL4D：2个端口/光口，例SD4Q：4个端口/光口，例SQ4O：8个端口/光口H：16个端口/光口M: 32个端口/光口末尾数字，表示速率等级1：STM-1，155M，例SD14：STM-4，622M，例SL416：STM-16，2.5G，例S1664：STM-64，10G，例S64

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