h245.asn

mgcp协议源代码。支持多种编码：g711

		audioSampling44k1	NULL,
		audioSampling48k	NULL
	},

	multichannelType	CHOICE
	{
		singleChannel	NULL,
		twoChannelStereo	NULL,
		twoChannelDual	NULL,
		threeChannels2-1	NULL,
		threeChannels3-0	NULL,
		fourChannels2-0-2-0	NULL,
		fourChannels2-2	NULL,
		fourChannels3-1	NULL,
		fiveChannels3-0-2-0	NULL,
		fiveChannels3-2	NULL
	},

	lowFrequencyEnhancement	BOOLEAN,

	multilingual	BOOLEAN,

	bitRate	INTEGER (1..1130),	--units kbit/s
	...
}

G7231AnnexCMode	::= SEQUENCE
{
	maxAl-sduAudioFrames	INTEGER (1..256),
	silenceSuppression	BOOLEAN,
	g723AnnexCAudioMode	SEQUENCE
	{
		highRateMode0	INTEGER (27..78),	-- units octets
		highRateMode1	INTEGER (27..78),	-- units octets
		lowRateMode0	INTEGER (23..66),	-- units octets
		lowRateMode1	INTEGER (23..66),	-- units octets
		sidMode0	INTEGER (6..17),	-- units octets
		sidMode1	INTEGER (6..17),	-- units octets
		...
	},
	...
}

-- ===================================================================================
-- Request mode definitions: Data modes
-- ===================================================================================

DataMode		::=SEQUENCE
{
	application	CHOICE
	{
		nonStandard	NonStandardParameter,
		t120	DataProtocolCapability,
		dsm-cc	DataProtocolCapability,
		userData	DataProtocolCapability,
		t84	DataProtocolCapability,
		t434	DataProtocolCapability,
		h224	DataProtocolCapability,
		nlpid	SEQUENCE
		{
			nlpidProtocol	DataProtocolCapability,
			nlpidData	OCTET STRING
		},
		dsvdControl	NULL,
		h222DataPartitioning	DataProtocolCapability,
		...,
		t30fax	DataProtocolCapability,
		t140	DataProtocolCapability
	},
	bitRate	INTEGER (0..4294967295),	-- units 100 bit/s
	...
}

-- ===================================================================================
-- Request mode definitions: Encryption modes
-- ===================================================================================

EncryptionMode	::=CHOICE
{
	nonStandard	NonStandardParameter,
	h233Encryption	NULL,
	...
}

 -- ===================================================================================
-- Round Trip Delay definitions
-- ===================================================================================

RoundTripDelayRequest	::=SEQUENCE
{
	sequenceNumber	SequenceNumber,
	...
}

RoundTripDelayResponse	::=SEQUENCE
{
	sequenceNumber	SequenceNumber,
	...
}

-- ===================================================================================
-- Maintenance Loop definitions
-- ===================================================================================

MaintenanceLoopRequest	::=SEQUENCE
{
	type		CHOICE
	{
		systemLoop	NULL,
		mediaLoop	LogicalChannelNumber,
		logicalChannelLoop	LogicalChannelNumber,
		...
	},
	...
}

MaintenanceLoopAck	::=SEQUENCE
{
	type		CHOICE
	{
		systemLoop	NULL,
		mediaLoop	LogicalChannelNumber,
		logicalChannelLoop	LogicalChannelNumber,
		...
	},
	...
}

MaintenanceLoopReject	::=SEQUENCE
{
	type		CHOICE
	{
		systemLoop	NULL,
		mediaLoop	LogicalChannelNumber,
		logicalChannelLoop	LogicalChannelNumber,
		...
	},
	cause		CHOICE
	{
		canNotPerformLoop	NULL,
		...
	},
	...
}

MaintenanceLoopOffCommand	::=SEQUENCE
{
	...
}

-- ===================================================================================
-- Communication Mode definitions
-- ===================================================================================

CommunicationModeCommand	::=SEQUENCE
{
	communicationModeTable	SET SIZE(1..256) OF CommunicationModeTableEntry,
	...
}

CommunicationModeRequest	::=SEQUENCE
{
	...
}

CommunicationModeResponse	::=CHOICE
{
	communicationModeTable	SET SIZE(1..256) OF CommunicationModeTableEntry,
	...
}

CommunicationModeTableEntry	::=SEQUENCE
{
	nonStandard	SEQUENCE OF NonStandardParameter OPTIONAL,
	sessionID	INTEGER(1..255),
	associatedSessionID	INTEGER(1..255) OPTIONAL,

	terminalLabel	TerminalLabel OPTIONAL, -- if not present, 
					-- it refers to all participants 
					-- in the conference
	sessionDescription	BMPString (SIZE(1..128)) ,
				  -- Basic ISO/IEC 10646-1 (Unicode) 
	dataType	CHOICE
	{
		videoData	VideoCapability,
		audioData	AudioCapability,
		data	DataApplicationCapability,
		...
	},
	mediaChannel	TransportAddress OPTIONAL,
	mediaGuaranteedDelivery	BOOLEAN OPTIONAL,
	mediaControlChannel	TransportAddress OPTIONAL,  -- reverse RTCP channel
	mediaControlGuaranteedDelivery	BOOLEAN OPTIONAL,
	...,
	redundancyEncoding	RedundancyEncoding OPTIONAL,
	sessionDependency	INTEGER (1..255) OPTIONAL,
	destination	TerminalLabel OPTIONAL
}

-- ===================================================================================
-- Conference Request definitions
-- ===================================================================================

ConferenceRequest	::=CHOICE
{
	
	terminalListRequest	NULL,                    -- same as H.230 TCU (term->MC)

	makeMeChair	NULL,                    -- same as H.230 CCA (term->MC)
	cancelMakeMeChair	NULL,                    -- same as H.230 CIS (term->MC)

	dropTerminal	TerminalLabel,       -- same as H.230 CCD(term->MC)

	requestTerminalID	TerminalLabel,       -- sames as TCP (term->MC)

	enterH243Password	NULL,                    -- same as H.230 TCS1(MC->term)
	enterH243TerminalID	NULL,                    -- same as H.230 TCS2/TCI
						--  (MC->term)
	enterH243ConferenceID	NULL,                    -- same as H.230 TCS3 (MC->term)
	...,
	enterExtensionAddress	NULL,                     -- same as H.230 TCS4 (GW->term)
	requestChairTokenOwner	NULL,                    -- same as H.230 TCA (term->MC)
	requestTerminalCertificate 	SEQUENCE
	{
		terminalLabel	TerminalLabel OPTIONAL,
		certSelectionCriteria	CertSelectionCriteria OPTIONAL,
		sRandom	INTEGER (1..4294967295) OPTIONAL,
					-- this is the requester's challenge
		...
	},
	broadcastMyLogicalChannel	LogicalChannelNumber,	-- similar to H.230 MCV
	makeTerminalBroadcaster	TerminalLabel,	-- similar to H.230 VCB
	sendThisSource	TerminalLabel,	-- similar to H.230 VCS
	requestAllTerminalIDs	NULL,
	remoteMCRequest	RemoteMCRequest	
}

CertSelectionCriteria	::=SEQUENCE SIZE (1..16) OF Criteria

Criteria			::=SEQUENCE
{
	field		OBJECT IDENTIFIER, -- may include certificate type
	value		OCTET STRING (SIZE(1..65535)),
	...
}

TerminalLabel	::=SEQUENCE
{
		mcuNumber	McuNumber,
		terminalNumber	TerminalNumber,
		...
}

McuNumber	::=INTEGER(0..192)
TerminalNumber	::=INTEGER(0..192)

-- ===================================================================================
-- Conference Response definitions
-- ===================================================================================

ConferenceResponse	::=CHOICE
{
	mCTerminalIDResponse	SEQUENCE             -- response to TCP(same as TIP)
	{				-- sent by MC only
		terminalLabel	TerminalLabel,
		terminalID	TerminalID,
		...
	},

	terminalIDResponse	SEQUENCE	-- response to TCS2 or TCI
	{				-- same as IIS
		terminalLabel	TerminalLabel,	-- (term->MC)
		terminalID	TerminalID,
		...
	},

	conferenceIDResponse	SEQUENCE	-- response to TCS3
	{				-- same as IIS
		terminalLabel	TerminalLabel,	-- (term->MC)
		conferenceID	ConferenceID,
		...
	},

	passwordResponse	SEQUENCE	-- response to TCS1
	{				-- same as IIS
		terminalLabel	TerminalLabel,	-- (term->MC)
		password	Password,
		...
	},

	terminalListResponse	SET SIZE (1..256) OF TerminalLabel,

	videoCommandReject	NULL,	-- same as H.230 VCR
	terminalDropReject	NULL,	-- same as H.230 CIR

	makeMeChairResponse	CHOICE	-- same as H.230 CCR
	{
		grantedChairToken	NULL,	-- same as H.230 CIT
		deniedChairToken	NULL,	-- same as H.230 CCR
		...
	},
	...,
	extensionAddressResponse	SEQUENCE	-- response to TCS4
	{
		extensionAddress	TerminalID,	-- same as IIS (term->GW)
		...
	},
	chairTokenOwnerResponse	SEQUENCE    -- response to TCA(same as TIR) sent by MC only
	{
		terminalLabel	TerminalLabel,
		terminalID	TerminalID,
		...
	},
	terminalCertificateResponse  	SEQUENCE
	{
       		terminalLabel           	TerminalLabel OPTIONAL,
       		certificateResponse           	OCTET STRING (SIZE(1..65535)) OPTIONAL, 
		...
   	},
	broadcastMyLogicalChannelResponse	CHOICE
	{
		grantedBroadcastMyLogicalChannel	NULL,
		deniedBroadcastMyLogicalChannel	NULL,
		...
	},
	makeTerminalBroadcasterResponse	CHOICE
	{
		grantedMakeTerminalBroadcaster	NULL,
		deniedMakeTerminalBroadcaster	NULL,
		...
	},
	sendThisSourceResponse	CHOICE
	{
		grantedSendThisSource	NULL,
		deniedSendThisSource	NULL,
		...
	},
	requestAllTerminalIDsResponse	RequestAllTerminalIDsResponse,
	remoteMCResponse	RemoteMCResponse
}

TerminalID 	::=OCTET STRING (SIZE(1..128))	-- as per H.230
ConferenceID	::=OCTET STRING (SIZE(1..32))
Password		::=OCTET STRING (SIZE(1..32))

RequestAllTerminalIDsResponse 	::=SEQUENCE
{
	terminalInformation	SEQUENCE OF TerminalInformation,
	...
}

TerminalInformation	::=SEQUENCE
{
	terminalLabel	TerminalLabel,
	terminalID	TerminalID,
	...
}

-- ===================================================================================
-- Remote MC Request definitions
-- ===================================================================================

	RemoteMCRequest	::=CHOICE
	{
		masterActivate	NULL,
		slaveActivate	NULL,
		deActivate	NULL,
		...
	}

	RemoteMCResponse	::=CHOICE
	{
		accept	NULL,
		reject	CHOICE
		{
			unspecified	NULL,
			functionNotSupported	NULL,
			...
		},
		...
	}

-- ===================================================================================
-- Command Message definitions
-- ===================================================================================

-- ===================================================================================
-- Command Message : Send Terminal Capability Set
-- ===================================================================================

SendTerminalCapabilitySet	::=CHOICE
{
	specificRequest	SEQUENCE
	{
		multiplexCapability	BOOLEAN,

		capabilityTableEntryNumbers	SET SIZE (1..65535) OF CapabilityTableEntryNumber OPTIONAL,

		capabilityDescriptorNumbers	SET SIZE (1..256) OF CapabilityDescriptorNumber OPTIONAL,
		...
	},
	genericRequest	NULL,
	...
}

-- ===================================================================================
-- Command Message : Encryption
-- ===================================================================================

EncryptionCommand	::=CHOICE
{
	encryptionSE	OCTET STRING,	-- per H.233, but no error protection
	encryptionIVRequest	NULL,	-- requests new IV
	encryptionAlgorithmID	SEQUENCE
	{
		h233AlgorithmIdentifier	SequenceNumber,
		associatedAlgorithm	NonStandardParameter
	},
	...
}

-- ===================================================================================
-- Command Message : Flow Control
-- ===================================================================================

FlowControlCommand	::=SEQUENCE
{
	scope		CHOICE
	{
		logicalChannelNumber	LogicalChannelNumber,
		resourceID	INTEGER (0..65535),
		wholeMultiplex	NULL
	},
	restriction	CHOICE
	{
		maximumBitRate	INTEGER (0..16777215),	-- units 100 bit/s 
		noRestriction	NULL
	},
	...
}

-- ===================================================================================
-- Command Message : Change or End Session
-- ===================================================================================

EndSessionCommand	::=CHOICE
{
	nonStandard	NonStandardParameter,

	disconnect	NULL,

	gstnOptions	CHOICE
	{
		telephonyMode	NULL,
		v8bis	NULL,
		v34DSVD	NULL,
		v34DuplexFAX	NULL,
		v34H324	NULL,
		...
	},

	...,
	isdnOptions	CHOICE
	{
		telephonyMode	NULL,
		v140	NULL,
		terminalOnHold	NULL,
		...
	}
}

-- ===================================================================================
-- Command Message : Conference Commands
-- ===================================================================================

ConferenceCommand	::=CHOICE
{
	broadcastMyLogicalChannel	LogicalChannelNumber,	-- similar to H.230 MCV
	cancelBroadcastMyLogicalChannel	LogicalChannelNumber, -- similar to H.230 Cancel-MCV

	makeTerminalBroadcaster	TerminalLabel,	-- same as H.230 VCB
	cancelMakeTerminalBroadcaster	NULL,	-- same as H.230 Cancel-VCB
		
	sendThisSource	TerminalLabel,	-- same as H.230 VCS
	cancelSendThisSource	NULL,	-- same as H.230 cancel VCS

	dropConference	NULL,	-- same as H.230 CCK
	...,
	substituteConferenceIDCommand	SubstituteConferenceIDCommand
}

SubstituteConferenceIDCommand	::=SEQUENCE
{
	conferenceIdentifier	OCTET STRING (SIZE(16)),
	...
}

-- ===================================================================================
-- Command Message : Miscellaneous H.230-like commands
-- ===================================================================================

MiscellaneousCommand	::=SEQUENCE
{
	logicalChannelNumber	LogicalChannelNumber,
	type		CHOICE
	{
		equaliseDelay	NULL,	-- same as H.230 ACE
		zeroDelay	NULL,	-- same as H.230 ACZ
		multipointModeCommand	NULL,
		cancelMultipointModeCommand	NULL,
		videoFreezePicture	NULL,
		videoFastUpdatePicture	NULL,

		videoFastUpdateGOB	SEQUENCE
		{
			firstGOB	INTEGER (0..17),
			numberOfGOBs	INTEGER (1..18)
		},

		videoTemporalSpatialTradeOff	INTEGER (0..31),	-- commands a trade-off value

		videoSendSyncEveryGOB	NULL,
		videoSendSyncEveryGOBCancel	NULL,

		...,
		videoFastUpdateMB	SEQUENCE
		{
			firstGOB	INTEGER (0..255) OPTIONAL,	
			firstMB	INTEGER (1..8192) OPTIONAL,
			numberOfMBs	INTEGER (1..8192),
			...
		},
		maxH223MUXPDUsize	INTEGER(1..65535),	-- units octets
		encryptionUpdate	EncryptionSync, 
		encryptionUpdateRequest	EncryptionUpdateRequest,
		switchReceiveMediaOff	NULL,
		switchReceiveMediaOn	NULL,

		progressiveRefinementStart	SEQUENCE
		{
			repeatCount	CHOICE
			{
				doOneProgression		NULL,
				doContinuousProgressions		NULL,
				doOneIndependentProgression	NULL,
				doContinuousIndependentProgressions	NULL,
				...