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ATM 縮略語(yǔ)辭典( 三 )

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MSC 移動(dòng)交換中心 Mobile Switching Center
MTBF 兩次故障間的平均時(shí)間 Media Time Between Faults
MTOR 故障修復(fù)所需平均時(shí)間 Media Time of Repair
MTP 郵件傳輸協(xié)議 Mail Transfer Protocol
MTSO 移動(dòng)電話交換站 Mobile Telephone Switching Office
MTTD 故障診斷所需平均時(shí)間 Media Time to Diagnose
MTU 最大傳輸單元 Maximum Transfer Unit
N
NAP 網(wǎng)絡(luò)接入點(diǎn) Network Access Point
NCA 網(wǎng)絡(luò)計(jì)算結(jié)構(gòu) Network Computing Architecture
NCFC 中國(guó)國(guó)家計(jì)算機(jī)網(wǎng)絡(luò)設(shè)施，
國(guó)內(nèi)也稱中關(guān)村網(wǎng) The National Computing and Network Facility of China
NCP 網(wǎng)絡(luò)控制協(xié)議 Network Control Protocol
NCP 網(wǎng)絡(luò)核心協(xié)議 Network Core Protocol
NEXT 近端串?dāng)_
NFS 網(wǎng)絡(luò)文件系統(tǒng) Network File System
NHRP 下一個(gè)節(jié)點(diǎn)路由協(xié)議
NHSNHRP Server
NICNull-Attach Concentrator
NIC 網(wǎng)卡 Network Interface Card
NIC 網(wǎng)絡(luò)信息中心 Network Information Centre
NIM 網(wǎng)絡(luò)接口模塊 Network Interface Module
NISDN 窄帶ISDN Narrowband Integrited Services Digital Network
NLAM 網(wǎng)絡(luò)層地址治理
NNI 網(wǎng)絡(luò)-網(wǎng)絡(luò)接口 Network-Network Interface
NOMS 網(wǎng)絡(luò)營(yíng)運(yùn)與治理專題討論會(huì) Network Operation and Management Symposium
NREN (美國(guó))國(guó)家研究和教育網(wǎng) National Research and EdUCation Network
NSAP 網(wǎng)絡(luò)服務(wù)接入點(diǎn) Network Service Access Point
NSF （美國(guó)）國(guó)會(huì)科學(xué)基金會(huì)
NVRAMNon-volatile RAM
NVT 網(wǎng)絡(luò)虛擬終端 Network Virtual Terminal
O
OAM 操作與維護(hù) Operation And Maintenance
ODBC 開(kāi)放數(shù)據(jù)庫(kù)互連 Open Database Connection
ORB 對(duì)象請(qǐng)求代理 Object REquest Broker
OSF 開(kāi)放軟件基金會(huì) Open Software Fundation
OSI 開(kāi)放系統(tǒng)互聯(lián) Open System Interconnection
OSPF 開(kāi)放最短路徑優(yōu)先(協(xié)議) Open Shortest Path First
P
PBX 用戶交換機(jī) Private Branch eXchange
PCM 脈沖編碼調(diào)制 Pulse Code Modulation
PCN 個(gè)人通信網(wǎng)絡(luò) Personal Communications Network
PCR 峰值信元速率 Peak Cell Rate
PCS 個(gè)人通信服務(wù) Personal Communications Service
PDH 準(zhǔn)同步數(shù)字系列
PDA 個(gè)人數(shù)字助理 Personal Digital Assistant
PDN 公用數(shù)據(jù)網(wǎng) Public Data Network
PDU 協(xié)議數(shù)據(jù)單元 Protocol Data Unit
PER 分組差錯(cuò)率 packet error rate
PEMPort Expansion Module
PIR 分組插入率packet insertion rate
PI/SOPrimary In/Secondary Out
PLCP 物理層會(huì)聚協(xié)議 Physical Layer Convergence Protocol
PLR 分組丟失率 packet loss rate
PMD 物理媒體相關(guān)（子層） Physical Medium Dependent
POH 通道開(kāi)銷
PON 無(wú)源光纖網(wǎng)
POPPost Office Protocol
PO/SIPrimary Out/Secondary In
POTS 普通老式電話業(yè)務(wù) Plain Old Telephone Service
PPD 部分舍棄分組數(shù)據(jù)包 Partial Packet Discard
PPP 點(diǎn)到點(diǎn)協(xié)議 Point to Point Protocol
PPTP 點(diǎn)對(duì)點(diǎn)隧道協(xié)議
PRM 每分鐘可打印輸出的頁(yè)數(shù) Page Per Minute
PRM 協(xié)議參考模型 Protocol Reference Model
PRN 分組無(wú)線網(wǎng) Packet Radio Network
PSN 分組交換節(jié)點(diǎn) Packet Switch Node
PSDN 分組交換數(shù)據(jù)網(wǎng)
PSTN 公用電話交換網(wǎng) Public Switched Telephone Network
PVC 永久虛電路（包括PVPC和PVCC） Permanent Virtual Circuit
PVPCpermanent virtual path connection
PVCCpermanent virtual channel connection
PVP 永久虛路徑 Permanent Virtual Path
Q
QoS 服務(wù)質(zhì)量 Quality of Service
R
RADIUS 遠(yuǎn)端授權(quán)撥號(hào)上網(wǎng)用戶服務(wù)
RARP 逆向地址解析協(xié)議 Reverse Address Resolution Protocol
RAS 遠(yuǎn)程訪問(wèn)服務(wù)器
RFC 請(qǐng)求評(píng)注 Request for Comments
RFTRequest for Technology
RIPRouting Information Protocol
RMON 遠(yuǎn)程網(wǎng)絡(luò)治理

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