網(wǎng)絡(luò)一般性術(shù)語-P

PI2s 　2048kbit/s PDH path layer 　 具有G.704的125μs同步幀
     　with synchronous 125μs 　 結(jié)構(gòu)的2048kbit/s PDH通道層
     　frame structure　according to G.704
    PI2x 　2048kbit/s layer (transparent) 2048kbit/s(透明)層
    P31e 　34368kbit/s PDH path layer 　 帶有4個準同步8448kbit/s
     　with 4 plesiochronous 8448kbit/s 的34368kbit/sPDH通道層
    P31s 　34368kbit/s PDH path layer 　 具有G.832的125μs同步幀
     　with synchronous 125μs 結(jié)構(gòu)的34368kbit/s PDH通道
     　frame structure　according to G.832 　 層
    P31x 　34368kbit/s layer (transparent ) 　34368kbit/s(透明)層
     　with 3 plesiochronous 44736kbit/s
    P4e 　139 264 kbit/s POH path layer 帶有4個準同步34368kbit/s
     with 4 plesiochronous 34 368kbit/s 的139264kbit/sPDH通道層
    P4s 　 139264kbit/s PDH path layer 具有G.832的125μs同步幀
     with plesiochronous 125μs 　結(jié)構(gòu)的139264kbit/s PDH
     frame structure　according to G.832 通道層
    P4x 139264kbit/s layer (transparent) 139264kbit/s(透明)層
    PDH 　Plesiochronous Digital Hierarchy 　準同步數(shù)字體系
    PLM 　Payload Mismatch 　凈荷失配
    PPI 　PDH Physical Interface PDH物理接口
    PJC 　Pointer Justification Count 指針調(diào)整計數(shù)
    PJE 　Pointer Justification Event 指針調(diào)整事件
    PM Performance Monitoring 性能監(jiān)視
    POH 　Path Over Head 通道開銷
    Pq PDH path layer, 　 PDH通道層，比特率等級為
    PRC 　Primary Reference Clock 主基準時鐘
    PS 　 Protection Switching 保護倒換
    PSC 　protection Switch Clock 保護倒換計數(shù)
    PSD 　Protection Switch Duration 保護倒換時間
    PSE 　Protection Switch Event 保護倒換事件
    PSS 　Protection Switch Second 保護倒換秒
    PTR 　Pointer 　指針