wg000003 h.248协议介绍 issue 1.2
DESCRIPTION
WG000003 H.248协议介绍 ISSUE 1.2. 课程目标. 了解 H.248 协议的体系结构 掌握 H.248 协议中命令用途 掌握 H.248 命令中参数的含义和用途 掌握 H.248 协议的消息交互过程 了解 MGW 网关 的数据配置. 学习完本课程,您将能够:. 参考资料. 随机手册--技术手册--信令与协议分册--应用协议--第 4 章 H.248&MEGACO 协议规范- RFC3015. 课程内容. 第一章 概述 第二章 H.248 协议介绍 第三章 信令流程. Training.huawei.com. - PowerPoint PPT PresentationTRANSCRIPT
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WG000003 H.248ISSUE 1.2
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H.248H.248H.248H.248MGW
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4 H.248&MEGACORFC3015
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Training.huawei.com H.248
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H.248
A
MGW
Signalling and Data Transfer
Interface
Signalling
Interface
A
GERAN
UTRAN
PSTN/
Legacy/External
HLR
Applications
& Services
MSC
server
GMSC server
Mc
Mc
D
C
MGW
Nb
Nc
Iu
Iu
CAP
CAP
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Mc McMSC ServerGMSC ServerMGWH.2483GPPH.248TransactionPackageMc3GPP R4ATMIPTDM
McMTP-3bATMSCTPIP
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Mc McMSC ServerGMSC ServerMGWIP/ATM/TDMMGW
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H.248MeGaCoITUIETFITU-TH.248IETFMeGaCoH.248MGCPMGCPH.248MGCPIPUDPH.248UDP/TCP/SCTP
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H.248: MGC MGH.248 VoIP : : TGAGRG
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MEGACO/H.248
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MEGACO/H.248MGWSCNSCNSCNMGCMGCMGWMGCMGCSCNSS7-ISUPQ.931/DSS1SGIPSCNSS7-InternetSGSS7
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H.248MSOFTX3000 MOSFTX3000UMTSMSC ServerGMSC ServerMGCH.248MOSFTX3000MGW
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H.248 H.248McIPaATMbIP H.248SCTPIPMACL1(G)MSC ServerMcMGW(a)IPMc(b)ATMH.248SCTPIPMACL1H.248SCTPIPMACL1(G)MSC ServerMcMGW(a)IPMc(b)ATMH.248SCTPIPMACL1
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1. Mc__________,____ 2. H.248_____ _____
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McH.248
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Training.huawei.com H.248
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H.248
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(Context Termination)TerminationContext
H.248/Megaco
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Add Subtract /IP(IP+)ATM(VPI/VCI)
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(Context Termination)
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ContextContext ContextID32bits Context IDMGMG
NULL0-NULLContextCHOOSE0xFFFFFFFE$CHOOSE MGWALL0xFFFFFFFF*ALL MGW Context
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ContextTopologyMODE
Priority MGCMGContext015
Emergency Context
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TerminationTDMTDMRTPADDSUBTRACTNULLNULL
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TerminationIDIDIDMGIDALL CHOOSEIDROOTROOTROOTModifyNotifyAuditValueAuditCapabilityServiceChangeROOT
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TerminationTermination ID : 6464
Properties : Events : Signals : Statistics : TerminationMGCMGCAuditValue
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Package/
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H.248
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H.248H.248
ITU-T X.680ASN.1X.690BER
RFC 2234 ABNF
MGCMGH.248
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H.248
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H.248 H.248Header
MIDMessage IdentifierMID
121
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H.248
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Transaction MGCMGTransactionID
TransHdrTransHdrTransactionIDTransactionIDTransHdrOptionalOptional
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TransactionTransactionReplyTransactionPending
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TransactionTransactionRequest
TransactionRequestContextTransactionRequest
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TransactionTransactionReplyTransactionRequestTransactionRequestReplyTransactionRequestTransactionRequestTransactionRequestTransactionReply
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TransactionTransactionPendingTransactionPending TransactionRequestTransactionRequestTransactionReplyTransactionPending
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Action
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Action ContextContextID
CtxHdrCtxHdrContextIDContextIDMGMGMGCContextID
CtxHdrContextID
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H.248
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Command(Command) H.248CMDHdrH.248Descriptor
H.248NotifyMGMGCServiceChangeMGMGCMGCMG
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Add/Modify/SubtractADD : TerminationContextContext ID(Termination)ContextTermination
MODIFY : Termination/(//)
SUBSTRACT : ContextTerminationTerminationContextTerminationContext
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Move/AuditValue/AuditCapabilitiesMOVE : TerminationContextContext
AUDITVALUE : TerminationPropertiesEventsSignalsStatistics
AUDITCAPABILITIES: MGTermination
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Notify/ServiceChangeNOTIFY : MGMGC MGWMGC
SERVICECHANGE : MGMGCMGMGCMGCServieceChangeMGMGCServiceChangeMGTermination
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DescriptorsDescriptors
DescriptorNameitem(itemValue)DescriptorCommandDescriptorNameitem
DescriptorName= { parm = value, parm = value ...... }
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DescriptorsModem: Modem (V.18, V.22, V.22bis, V.32,V32bis V.34, V.90, V.91, Synchronous ISDN)
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DescriptorsMedia : TerminationStateStream Descriptor TerminationStateTermination(Stream)Stream DescriptorMedia StreamStreamStreamIDStreamID ContextStream
StreamDescriptor Local/Remote/LocalControlStream DescriptorDescriptorMedia Descriptor Media Descriptor TerminationStateDescriptor Stream Descriptor LocalControl Descriptor Local Descriptor Remote Descriptor
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DescriptorsTerminationState: Termination(Package)
Stream : remote/local/localControlLocalRemoteNULLStreamStream DescriptorStream IDContextMedia flowingLocal : MGWremote : MGWLocalControl : MGCMGW
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DescriptorsEvents : MGEventsEvents
EventBuffer : EventsMG
Singals : Termination / ()
Audit :
Packages : AuditValueTermination Package
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DescriptorsDigitMap : MG()MGC(DTMF)
ServiceChange : ServiceChange
ObservedEvents : NotifyAuditEvents
Statistics : TerminationTermination
Extersion :
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1. H.2482. H.248H.248
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1. (Context), (Termination)2. ABNFASN.1
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H.248 ContextTermination: Command Descriptor Transaction
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Training.huawei.com H.248
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(MGW)MSC ServerMGWMGWMSC ServerMGW1.0406Version Not supported
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MGWMSC Server
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MGWMSC Server
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MGWMSC Server
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MGWMSC ServerMGWMSC ServerMEGACO/1 [182.20.20.1]: 2945 Transaction = 9998 { Context = - { ServiceChange = ROOT {Services { Method= Forced, Reason = 905{"Termination taken out of service"}} } } }MSC ServerMEGACO/1 [182.20.0.1]:2944 Reply = 9998 { Context = - {ServiceChange = ROOT { ER=505{"Not Register"} }} }
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Core NetworkMSOFTX3000TMGUMG8900SG7000SS7/PRIM3UA/SCTPH.248PLMNPLMNMSMS
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MSC ServerMGW MEGACO/1 [182.20.0.1]:2944 Transaction = 10006 { Context = $ { Add = A16, Add = $ { Events = 2223 {nt/netfail,nt/qualert }, Media { Stream = 1 { LocalControl { Mode = ReceiveOnly }, Local { v=0 c=IN IP4 $ m=audio $ RTP/AVP 8 } } } } } }AddAdd_ReplyMSC ServerMGWMSC ServerAddMGWRTPIP
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MSC ServerMGW
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MSC ServerMGWMEGACO/1 [182.20.20.1]:2945Reply = 10006 { Context = 2000 { Add = A16, Add= A32{ Media { Stream = 1 { Local { v=0 c=IN IP4 169.0.0.16 m=audio 2222 RTP/AVP 8 } } } } } }AddAdd_ReplyMSC ServerMGWAdd ReplyRTPIDIPMSC Server
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MSC ServerMGWModifyModify_ReplyMSC ServerMGWMSC ServerModifyMGWMGWRTPIPMGW
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MSC ServerMGW
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MSC ServerMGWMEGACO/1 [182.20.0.1]:2944 Transaction = 10008 { Context = 2000 { Modify = A16 { Signals { }, Modify = A32 { Media { Stream = 1 { LocalControl { Mode=SendReceive } } } } } }ModifyModify_ReplyMSC ServerMGWMSC ServerModifyMGW
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MSC ServerMGW MEGACO/1 [182.20.20.1]:2945 Reply = 10008 { Context = 2000 { Modify = A16, Modify = A32 } }ModifyModify_ReplyMSC ServerMGWMGWModify ReplyMSC Server
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MSC ServerMGWMEGACO/1 [182.20.0.1]:2944 Transaction = 10009 { Context = 2000 { Subtract = A16 Subtract = A32 } }SubtractSubtract_ReplyMSC ServerMGWMSC ServerSubtractMGWMGW
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MSC ServerMGWMEGACO/1 [182.20.20.1]:2945 Reply = 10009 { Context = 2000 { Subtract = A16 Subtract = A32 } }SubtractSubtract_ReplyMSC ServerMGWMGW,MSC Server
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1. MOSFTX3000H.2482. MG
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1. IFMAFMBSGSGU2. ServiceChangeMG
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H.248MOSFTX3000MGH.248
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H.248H.248H.248H.248MOSFTX3000
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IPSCN
NULL
Act vmgw,