數據通信與網絡技術詞匯表P

PA Prearbitrated
    PCS Personal communications Services 個人通信服務
    PDH Plesiochronous Digital Hierarchy 準同步數字體系
    PDU Protocol Data Unit 協(xié)議數據單元
    PES Packetized Elementary Stream
    PFM Parameter Frame mnagement 參數構成管理
    PHY Physical Layer Protocol 物理層協(xié)議
    PLPC Physical Layer Convergence Protocol 物理層收斂協(xié)議
    PM Phase Modulation 脈沖調制
    PMD Physical Layer Medium Dependent 物理層中間依靠
    POH Path Overhead 路徑負載
    PON Passive Optical Network 無源光網絡
    POP Point of Presence 電話接入網[站]點
    POTS Plain Old Telephone Service 普通老式電話服務
    PPL Phase Locked Loop 脈沖鎖定環(huán)路
    PPV Pay Per View 有價值意見
    PPP Point-to-Point Protocol 點到點協(xié)議
    PRI Primary Rate Interface 主速率接口
    PRM Protocol REference Model 協(xié)議參考模型
    PS Program Stream 程序流
    PSTN Public Switched Telephone Network 公用電話交換網
    PT Payload Type 有效載荷類型
    PTE Path-Terminating Equipment 路徑終結設備
    PTM Packet Transfer Mode 包傳輸模式
    PTT Post,Telephone and Telegraph 局，電話和電報
    PVC Permanent Virtual Circuit 永久虛電路