༯၂սຩඌКࣘႯն࿐ຩაࢌߐݓࡅᇗׄൌဒ൩්೦
ᇶေଽಸ•MGCP•Megaco/
MGCPླྀၰ•MGCPۀඍ•MGCPླྀၰଆ•MGCPଁ•MGCPଁཙႋ•ׅࢌੀӱ
MGCPۀඍč1ĎԮ֥7P*1ຩܱࢲܒSigalingand Sigalingand Sigalingover IPcall controlcall controlControl Control and and StatusStatusMedia Media Media over IPConversionConversion
MGCPۀඍč2Ď.($ބ.(ٳ֥නམCall Sigalingover IPMGCMGCCantroland statusControl and Status Media Media Media GatewayGatewayGatewayMedia GatewayMedia over IP
MGCPۀඍč3Ď•MGCބMGٳ֥Ⴊ൝–ૂุሇߐཌྷؓٳ҃ᄝшჸ–֤ޫࢡ॥ᇅཌྷؓࠢᇏ–ॖၛႨཌྷؓбࢠഒ֥MGC॥ᇅཌྷؓбࢠ؟֥MG–ॖၛMGCॹֹശࠩ–ᆜ۱༢֥ྟିॖၛ۷ݺֹႪ߄
MGCPۀඍč4Ď•໊ᇂ–ႨႿೈࢌߐބૂุຩܱᆭࡗ֥ླྀၰ•ۿି–ૂุੀ৵ࢤ֥ࡹ৫aົӻބ٢•ཌྷܱླྀၰ–TelecordiaބCISCO֩ิԛ֥ࡥֆຩܱ॥ᇅླྀၰčSGCP)–Level3֩܄ඳิԛ֥IPഡС॥ᇅླྀၰčIPDC)•MGCP൞SGCPაIPDC֥ކѩ•1999୍10ᄅྙӮIETF RFC2705
MGCPླྀၰଆč1Ď•؊ׄčEndpointsĎ–ૂุຩܱᇏ֥આࠠൌุđؿෂࠇᆀࢤ൬ૂุੀ–؊ׄğೂᇏཌބႨཌ֩–ྴ؊ׄğૂุሧჷ–؊ׄѓ്ژğთބຩܱଽӫ•৵ࢤčConnectionsĎ–؊ׄაIPሧჷčRTP߶߅ĎϾק–৵ࢤࡹ৫ᆭުđࣼॖၛᄝIPຩഈ٠໙ཌྷႋ֥؊ׄ–၂۱؊ׄഈॖၛϹק؟۱৵ࢤ
MGCPླྀၰଆč2ĎZero or more lineN connectionsEndPointN=>0Telephone LineTelephone LineConnectionConnectionIP resourcesIP resourcesMedia over IPEndpointEndpointMGMG
MGCPଁ(1Ď•ଁ۬ൔ–CommandVerbTransactionIDEndpointIDMGCP •ଁళส–ᄍྸ၂Ҫଁళส–၂ϮႨႿԷࡹބ๙ᆩ
MGCPଁ(2)•EDCFEndpointConfiguratin–MGC->MG–ؓ؊ׄࣉྛᇂ,ܿק؊ׄഈ෮൬ྐݼ֥щٚൔ•CRCXCreateConnection–MGC->MG–ᄝMGᇏԷࡹหק֥৵ࢤ•MDCXModifyConnection–MGC->MG–ྩڿMGᇏૂุ৵ࢤ֥උྟđЇও৵ࢤ֥Чֹඋྟބჹ؊උྟ
MGCPଁ(3)•DLCXDeleteConnection–MGCĒ>MG; MG->MGC–ԢMGᇏࡹ৫֥৵ࢤ•RQNTNotificationRequest–MGC->MG–౨MGࡓҩหק൙ࡱ֥ؿള•NTFYNotify –MG->MGC–MGҩ֞ਔหק൙ࡱ,ѩഈБ۳MGC
MGCPଁ(4Ď•AUEPAuditEndpoint–MGC->MG–ҩMGᇏหק؊֥ׄሑ•AUCXAuditConnection–MGC->MG–ҩMGᇏหק৵ࢤ֥ሑ
MGCPଁč5Ď•RSIPRestartInProgress–MG->MGC–๙ᆩMGC,MGᇏ؊ׄࣉೆބԛڛༀ–ԛڛༀ֥ٚൔ•Gracefulğࡼᄝᆷקൈުԛڛༀ•Forcedğ৫ࠧԛڛༀ•Restartğࡼᄝܿק֥ൈࡗު߫گڛༀ•Disconnectedğ؊ׄၘࣜ؎षđᆞᄝ൫৵ࢤ•Cancel-gracefulğ౼ཨభ૫ၘࣜؿԛ֥“Graceful”ଁ
MGCPଁཙႋč1Ď•1xx ਢൈ֥ཙႋ–100൙ༀᆞФᆳྛ•2xx ଁӮۿປӮ–200౨֥൙ༀӮۿປӮ–250৵ࢤӮۿԢ
MGCPଁཙႋč2Ď•4xx ᄠൈྟհ༂–400൙ༀႮႿᄠൈྟհ༂҂ିФᆳྛ–403؊ׄ֒భીႵቀܔ֥ሧჷ–404ଢభջॺ҂ቀ•5xx Ⴅࣲྟհ༂–500൙ༀႮႿ؊ׄໃᆩط҂ିᆳྛ–501൙ༀႮႿ؊ׄໃሙСݺط҂ିᆳྛ
ׅࢌੀӱ•॥ᇅᇏૂุຩܱ–MGCPླྀၰބISUPླྀၰކ܋ປӮᇏޫࢡ•॥ᇅሁֹຩܱ–MGCPླྀၰֆڵᄳႨᇔ؊ࢤೆ֥ۿି
ຩܱᇿҨ
॥ᇅᇏຩܱč1Ď
॥ᇅᇏຩܱč2Ď
॥ᇅࠢӮࢤೆഡСč1Ď
॥ᇅࠢӮࢤೆഡСč2Ď
Megaco/ླྀၰ•Megacoླྀၰۀඍ•Megacoุ༢ࢲܒ•ЇčPacket)•൙ༀࢌčTransaction)•Megacoଁ•૭ඍژčDescriptor)•ׅࢌੀӱ
Megacoླྀၰۀඍ•ۿିোරႿMGCP•ཌྷܱླྀၰ–IETF֥MGCP–LucentaAGCS֩܄ඳิԛ֥ૂุഡС॥ᇅླྀၰ(MDCPĎ–ITU-T SG16֥ႮMDCPؿᅚطট•IETFӮ৫MegacoቆđವކMGCPބMDCP•2000୍6ᄅ*56 5 4( აIETFކቔđವކMegacoބđԛMegaco/
Megacoุ༢ࢲܒč1)•ᇔࢲׄčTerminationĎ–ؿෂࠇࢤ൬၂۱ࠇᆀ؟۱ඔऌੀ–϶ႥࣲྟᇔࢲׄğսіൌุđೂᇏཌaଆཌĠ–ਢൈᇔࢲׄğսіਢൈྟ֥ྐ༏ੀđೂIPሧჷ–TerminationIDaPropertyIDaDescriptor
Megacoุ༢ࢲܒč2Ď•ܱ৳čContextĎ–ਆ۱ࠇ؟۱ᇔࢲׄᆭࡗ֥৵ࢤܱ༢–ᆺႵ၂۱ܱ৳ᇏ֥ᇔࢲׄҌିࢌߐૂุ–ॢܱ৳čNull ContextĎğ•෮Ⴕ҂აޅఃᇔࢲׄཌྷ৳༢֥ᇔࢲ֥ׄࠢކ•ܱ৳֥උྟ–ContextID–Topology:іൕܱ৳ᇏᇔࢲׄᆭࡗૂุ֥ੀཟ–PriorityğMGԩܱ৳ൈ֥Ⴊ༵ࠩ–Indicator of emergency call
ЇčPacket)•Ⴈটಒקᇔࢲ֥ׄ҂•Ⴈটѓ്ૂุຩܱ֥ି৯•Ї֥קၬ–උྟčPropertyĎğᇔࢲׄሑඋྟބૂุੀหྟ–൙ࡱčEventĎğᇔࢲׄླေҩބഈБ֥൙ࡱđೂᅋࠏđܫࠏބஅҭ֩–ྐݼčSignalĎğ౨MGཟᇔࢲׄീࡆ֥ྐݼđೂѭݼၻaફၻބၻ๙ᆩ֩–࠹čStatisticĎğᆷൕᇔࢲׄҐࠢѩഈБ֥࠹ඔऌ•MGC๙ݖബ࠹ॖၛؿགྷMGᆦӻଧུЇ
൙ༀࢌčTransacition)•൙ༀࢌো–ႮTransactionRequestؿఏTransactionRequest(TransactionID{ContextID1{Command, Command,…,Command},ContextID2{Command, Command,…,Command},ContextID3{Command, Command,…,Command}})–ْ߭ࢲݔ٢ᄝTransactionReplayᇏ•൙ༀࢌหׄ–Ќᆣଁ֥οᆳྛđ҂֥൙ༀॖၛၛޅඨᆳྛ–൙ༀԩ൞ჰሰҠቔ
MegacoଁčCon.)•Add–MGCĒ>MG–ཟ၂۱ܱ৳เࡆ၂۱ᇔࢲׄ–֒ཟ၂۱ܱ৳เࡆֻ၂۱ᇔࢲׄൈđൈԷࡹ၂۱ܱ৳•Subtract –MGCĒ>MG–ࢳԢ၂۱ᇔࢲׄაܱ৳֥৳༢đѩϜھᇔࢲׄ٢ೆॢܱ৳–֒Ԣܱ৳ᇏቋު၂۱ᇔࢲׄൈđൈԢਔᆃ۱ܱ৳•Move –MGCĒ>MG–ࡼ၂۱ᇔࢲׄՖ၂۱ܱ৳ሇ၍֞ਸ਼၂۱ܱ৳–҂ିႨটࡼᇔࢲׄՖॢܱ৳ᇏ၍ሼބ၍ೆ
MegacoଁčCon.)•Modify–MGCĒ>MG–ྩڿ၂۱ᇔࢲ֥ׄඋྟa൙ࡱބྐݼđᆷൕҩཌྷܱ֥൙ࡱ•Notify–MG->MGC–Бۡૂุຩܱᇏ෮ؿള֥൙ࡱ•AuditValue–MGCĒ>MG–ࠆ౼ᇔࢲׄ֒భ֥උྟa൙ࡱaྐݼ
Megacoଁ•AuditCapability–MGCĒ>MG–ࠆ౼ૂุຩܱ෮ᄍྸ֥ᇔࢲ֥ׄหྟa൙ࡱބྐݼ֥෮Ⴕॖିᆴ֥ྐ༏•ServiceChange–MG->MGC/MGC->MG–Бۡᇔࢲׄࡼေԛڛༀࠇᆀ߫گڛༀ–MGCᆷൕႋԛڛༀࠇ߫گڛༀ֥ᇔࢲׄ–MGބ၂۱ྍ֥MGCࡹ৫৳༢–MGCࡼؓMG֥॥ᇅಃ၍ࢌ۳ః֥MGC
૭ඍژčDescriptor)čCon.)•טᇅఖ૭ඍژ(Modem)–ؓטᇅఖ֥োބҕඔࣉྛקၬ•گႨ૭ඍژ(Multiplex)–ࡼૂุބؓႋ֥ӵᄛ๙֡৳༢ᄝ၂ఏ•൙ࡱ૭ඍژ–ЇওRequestIDބ၂ቆMGླေҩބБ֥ۡ൙ࡱ•ૂุ૭ඍژčMedia)–૭ඍ҂֥ૂุੀ–Їও၂۱ᇔࢲׄሑ૭ඍژބ؟۱ੀ૭ඍژ–ੀ૭ඍژЇওЧֹ॥ᇅ૭ඍژaЧֹ૭ඍژބჹӱ૭ඍژ
૭ඍژčDescriptor)čCon.)•ੀ૭ඍژ(stream)–Ⴎ۱ሰ૭ඍژऎุ૭ඍ•Чֹੀ֥หྟ•ჹӱੀ֥หྟ•ᇔࢲ֥ׄหྟ•Чֹ॥ᇅ૭ඍژ(local control)–ૂุੀหႵ֥උྟଆൔ–receive-only/send-only/send-recieve
૭ඍژčDescriptor)čCon.)•Чֹ૭ඍژč-PDBM
–૭ඍMGࢤ൳֥֞ૂุ•ჹ؊૭ඍژ 3FNPUF
–૭ඍMGؿԛ֥ૂุ•ᇔࢲׄሑ૭ඍژ 5FSNJOBUJPO 4UBUF
–ြༀሑหྟބ൙ࡱߏթหྟ–ᇔࢲׄሑğTest, in service, out of service
૭ඍژčDescriptor)čCon.)•൙ࡱߏթ૭ඍژ(EventBuffer)–၂༢ਙླေҩބߏթ֥൙ࡱ–ؓҩ֥֞൙ࡱ֥ԩଆൔ•ྐݼ૭ඍژčSignal)–MGႋႨႿᇔࢲ֥ׄྐݼࠢ•ബ࠹૭ඍژčAudit)–ཟMGᆷൕေࣉྛബ࠹֥ྐ༏–၂۱ః૭ඍژ֥ࠢކ
૭ඍژčDescriptor)čCon.)•ြༀڿэ૭ඍژčServiceChange)–ᆺିႨႿServiceChangeଁ–૭ඍڿэ֥ଆൔaჰၹaൈࡗ֩•ඔ૭ඍژ(DigitMap)–ܿקቔႨႿMGᇏ֥ѭݼٚσ–ႨႿҩބБۡᄝᇔࢲׄԩࢤ൬֥֞ඔሳ
૭ඍژčDescriptor)čCon.)•࠹૭ඍژčStatistics)–૭ඍܱ৳ᇏᇔࢲ֥ׄ࠹උྟ•Ї૭ඍژčPacket)–ႨႿAuditValueଁđْ߭ᇔࢲׄൌགྷ֥Ї֥ਙі•Фܴҳ൙ࡱ૭ඍژ(ObservedEvent)–ཟMGCБۡҩ֥֞൙ࡱ•ຉ௪૭ඍژčTopology)–૭ඍܱ৳ᇏᇔࢲ֥ׄੀٚཟ–čT1,T2,৳Ď•հ༂૭ඍژ(Error)–ཟMGCБۡհ༂
ׅࢌੀӱ•॥ᇅᇏຩܱ–აISUPླྀၰކ܋ປӮᇏޫࢡ•॥ᇅሁֹຩܱ–ֆڵᄳႨᇔ؊ࢤೆ֥ۿି
॥ᇅᇏຩܱč1Ď
॥ᇅᇏຩܱč2Ď
॥ᇅࠢӮࢤೆഡСč1Ď
॥ᇅࠢӮࢤೆഡСč2Ď
