45
广域网络（ WAN ）
Embed Size (px)
DESCRIPTION
广域网络（ WAN ）. 第五章. 广域网的特点. 支持用户使用计算机进行远距离的信息交换。 覆盖范围广 , 通信的距离远，线路成本增加。 由政府部门组织，电信部门或公司负责组建、管理和维护，并向全社会提供面向通信的 有偿服务 ，流量统计和计费问题. 本章内容. SONET/SDH X.25 F-RELAY ISDN ATM. SONET/SDH －概述. SONET/SDH （同步光纤网／同步数字体系） （ Synchronous Optical Network/ Synchronous Digital Hierarchy ） - PowerPoint PPT Presentation
Citation preview
-
WAN
-
,
-
SONET/SDHX.25F-RELAYISDNATM
-
SONET/SDHSONET/SDHSynchronous Optical Network/ Synchronous
Digital HierarchySONETANSISDHITU-TSONET/SDH
-
SONET/SDH(Mbps)SONETSDH51.840OC-1155.520OC-3STM-1466.560OC-9STM-3622.080OC-12STM-4933.120OC-18STM-61244.160OC-24STM-81866.240OC-36STM-122488.320OC-48STM-16
4976.6400C-96STM-329953.280OC-192STM-64
-
SONET/SDHSONET OSI
-
SONET/SDH
-
SONET/SDHOSISectionLinePath)
-
SONET/SDHSMT-1STM-1155.520M2430892703OC-1125us8000/s
-
X.25X.25ITU-T1976X.25:8090
-
X.25X.25DTEDCEDTEDCE
-
X.25
-
X.25HDLC
-
X.25
-
PTNPT3XX3X28X29PSENMCPCPADFEPX.25
-
F-RELAY1984CCITTITU-T Q.92264kbps
-
FRX.25X25
-
FRX.25
-
FR-
-
ISDNISDNITU-T 1976
-
ISDN
-
ISDN
-
ISDN
-
BRI-BRI264kbpsB116kbpsDISDNBRI PRI
-
ISDNBRI
-
ISDNPRIPRI-PRI2364kbps164kbps
-
ISDN
-
ATMQoS100us
-
ATM-TDMTDM
-
ATM-ATDMTDM
-
ATM-architectureATMUser-network interfacenetwork-network
interface
-
ATM-TP VP VCTPTransmission PathVPVirtual PathVCVirtual
Circuit
-
ATM-virtual connectionVirtual ConnectionVPI,VCIVPIVirtual Path
Identifier VCIVirtual Circuit Identifier ,may be repeated under
different VP
-
ATM-UN CELL NN CELLcell
-
ATM-Cell HeadCell Head
-
ATM-Connection SetupCall Setup
-
ATM-Cell Switch
-
ATM-Cell Switch
-
ATM-Virtual Circuitcellhead
-
ATM ArchitectureATM
-
ATMATM Layer
-
ATMATMQoSSCRPCRMCRCLRCTDCDV
-
ATMATMWAN
