數(shù)據(jù)通信與網(wǎng)絡(luò)技術(shù)詞匯表 P

PA Prearbitrated
    PCS Personal communications Services 個人通信服務(wù)
    PDH Plesiochronous Digital Hierarchy 準同步數(shù)字體系
    PDU Protocol Data Unit 協(xié)議數(shù)據(jù)單元
    PES Packetized Elementary Stream
    PFM Parameter Frame mnagement 參數(shù)構(gòu)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(diào)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(wǎng)絡(luò)
    POP Point of Presence 電話接入網(wǎng)[站]點
    POTS Plain Old Telephone Service 普通老式電話服務(wù)
    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(wǎng)
    PT Payload Type 有效載荷類型
    PTE Path-Terminating Equipment 路徑終結(jié)設(shè)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