--
-- Abstract Syntax Notion (ASN.1) file for H.225.0 Version 1
--
-- Last Updated: Dec 29, 2000
--

H323-MESSAGES DEFINITIONS AUTOMATIC TAGS ::=
BEGIN

H323-UserInformation ::= SEQUENCE		-- root for all Q.931 related ASN.1
{
	h323-uu-pdu			H323-UU-PDU,
	user-data			SEQUENCE
	{
		protocol-discriminator	INTEGER	(0..255),
		user-information	OCTET STRING (SIZE(1..131)),
		...
	} OPTIONAL,
	...
}

H323-UU-PDU ::= SEQUENCE
{
	h323-message-body   		CHOICE
	{
		setup			Setup-UUIE,
		callProceeding		CallProceeding-UUIE,
		connect			Connect-UUIE,
		alerting		Alerting-UUIE,
		userInformation		UI-UUIE,
		releaseComplete		ReleaseComplete-UUIE,
		facility		Facility-UUIE,
		...
	},
	nonStandardData			NonStandardParameter OPTIONAL,
	...
}

Alerting-UUIE ::= SEQUENCE
{
	protocolIdentifier		ProtocolIdentifier,
	destinationInfo			EndpointType,
	h245Address			TransportAddress OPTIONAL,
	...
}

CallProceeding-UUIE ::= SEQUENCE
{
	protocolIdentifier		ProtocolIdentifier,
	destinationInfo			EndpointType,
	h245Address			TransportAddress OPTIONAL,
	...
}

Connect-UUIE ::= SEQUENCE
{
	protocolIdentifier		ProtocolIdentifier,
	h245Address			TransportAddress OPTIONAL,
	destinationInfo			EndpointType,
	conferenceID			ConferenceIdentifier,
	...
}

UI-UUIE ::= SEQUENCE
{
	protocolIdentifier		ProtocolIdentifier,
	...
}

ReleaseComplete-UUIE ::= SEQUENCE
{
	protocolIdentifier		ProtocolIdentifier,
	reason				ReleaseCompleteReason OPTIONAL,
	...
}

ReleaseCompleteReason ::= CHOICE
{
	noBandwidth			NULL,	-- bandwidth taken away or ARQ denied
	gatekeeperResources		NULL,	-- exhausted
	unreachableDestination		NULL,	-- no transport path to the destination
	destinationRejection		NULL,	-- rejected at destination
	invalidRevision			NULL,
	noPermission			NULL,	-- called party's gatekeeper rejects
	unreachableGatekeeper		NULL,	-- terminal cannot reach gatekeeper for ARQ
	gatewayResources		NULL,
	badFormatAddress		NULL,
	adaptiveBusy			NULL,	-- call is dropping due to LAN crowding
	inConf				NULL,	-- no address in AlternativeAddress
	undefinedReason			NULL,
	...,
	facilityCallDeflection		NULL
}

Setup-UUIE ::= SEQUENCE
{
	protocolIdentifier		ProtocolIdentifier,
	h245Address			TransportAddress OPTIONAL,
	sourceAddress			SEQUENCE OF AliasAddress OPTIONAL,
	sourceInfo			EndpointType,
	destinationAddress		SEQUENCE OF AliasAddress OPTIONAL,
	destCallSignalAddress		TransportAddress OPTIONAL,
	destExtraCallInfo		SEQUENCE OF AliasAddress OPTIONAL,		-- Note 1 
	destExtraCRV			SEQUENCE OF CallReferenceValue OPTIONAL,	-- Note 1
	activeMC			BOOLEAN,
	conferenceID			ConferenceIdentifier,
	conferenceGoal			CHOICE
	{
		create					NULL,
		join					NULL,
		invite					NULL,
		...
	},
	callServices			QseriesOptions OPTIONAL,
	callType			CallType,
	...,
	sourceCallSignalAddress		TransportAddress OPTIONAL,
	remoteExtensionAddress		AliasAddress OPTIONAL
}

Facility-UUIE ::= SEQUENCE
{
	protocolIdentifier		ProtocolIdentifier,
	alternativeAddress		TransportAddress OPTIONAL,
	alternativeAliasAddress		SEQUENCE OF AliasAddress OPTIONAL,
	conferenceID			ConferenceIdentifier OPTIONAL,
	reason				FacilityReason,
	...
}

FacilityReason ::= CHOICE
{
	routeCallToGatekeeper		NULL,		-- call must use gatekeeper model
							-- gatekeeper is alternativeAddress
	callForwarded			NULL,
	routeCallToMC			NULL,
	undefinedReason			NULL,
	...
}

TransportAddress ::= CHOICE
{
	ipAddress		SEQUENCE
	{
		ip			OCTET STRING (SIZE(4)),
		port			INTEGER(0..65535)
	},
	ipSourceRoute		SEQUENCE
	{
		ip			OCTET STRING (SIZE(4)),
		port			INTEGER(0..65535),
		route			SEQUENCE OF OCTET STRING(SIZE(4)),
		routing 		CHOICE
		{
			strict	NULL,
			loose	NULL,
			...
		},
		...
	},
	ipxAddress	SEQUENCE
	{
		node		OCTET STRING (SIZE(6)),
		netnum		OCTET STRING (SIZE(4)),
		port		OCTET STRING (SIZE(2))
	},
	ip6Address	SEQUENCE
	{
		ip		OCTET STRING (SIZE(16)),
		port		INTEGER(0..65535),
		...
	},
	netBios			OCTET STRING (SIZE(16)),
	nsap			OCTET STRING (SIZE(1..20)),
	nonStandardAddress	NonStandardParameter,
	...	
}

EndpointType ::= SEQUENCE
{
	nonStandardData		NonStandardParameter OPTIONAL,
	vendor			VendorIdentifier OPTIONAL,
	gatekeeper		GatekeeperInfo OPTIONAL,
	gateway			GatewayInfo OPTIONAL,
	mcu			McuInfo OPTIONAL,	-- mc must be set as well
	terminal		TerminalInfo OPTIONAL,
	mc			BOOLEAN,		-- shall not be set by itself
	undefinedNode		BOOLEAN,	
	...
}

GatewayInfo ::= SEQUENCE
{
	protocol			SEQUENCE OF SupportedProtocols OPTIONAL,
	nonStandardData			NonStandardParameter OPTIONAL,
	...
}

SupportedProtocols ::= CHOICE
{
	nonStandardData			NonStandardParameter,
	h310				H310Caps,
	h320				H320Caps,
	h321				H321Caps,
	h322				H322Caps,
	h323				H323Caps,
	h324				H324Caps,
	voice				VoiceCaps,
	t120-only			T120OnlyCaps,
	...
}

H310Caps ::= SEQUENCE
{
	nonStandardData			NonStandardParameter OPTIONAL,
	...
}

H320Caps ::= SEQUENCE
{
	nonStandardData			NonStandardParameter OPTIONAL,
	...
}

H321Caps ::= SEQUENCE
{
	nonStandardData			NonStandardParameter OPTIONAL,
	...
}

H322Caps ::= SEQUENCE
{
	nonStandardData			NonStandardParameter OPTIONAL,
	...
}

H323Caps ::= SEQUENCE
{
	nonStandardData			NonStandardParameter OPTIONAL,
	...
}

H324Caps ::= SEQUENCE
{
	nonStandardData			NonStandardParameter OPTIONAL,
	...
}

VoiceCaps ::= SEQUENCE
{
	nonStandardData			NonStandardParameter OPTIONAL,
	...
}

T120OnlyCaps ::= SEQUENCE
{
	nonStandardData			NonStandardParameter OPTIONAL,
	...
}

McuInfo ::= SEQUENCE
{
	nonStandardData			NonStandardParameter OPTIONAL,
	...
}

TerminalInfo ::= SEQUENCE 
{
	nonStandardData			NonStandardParameter OPTIONAL,
	...
}

GatekeeperInfo ::= SEQUENCE 
{
	nonStandardData			NonStandardParameter OPTIONAL,
	...
}

VendorIdentifier ::= SEQUENCE
{
	vendor			H221NonStandard,
	productId		OCTET STRING (SIZE(1..256)) OPTIONAL,	-- per vendor
	versionId		OCTET STRING (SIZE(1..256)) OPTIONAL,	-- per product
	...
}

AliasAddress ::= CHOICE
{
	e164			IA5String (SIZE (1..128)) (FROM ("0123456789#*,")),
	h323-ID			BMPString (SIZE (1..256)),	-- Basic ISO/IEC 10646-1 (Unicode)
	...
}	

QseriesOptions ::= SEQUENCE
{
	q932Full		BOOLEAN,	-- if true, indicates full support for Q.932
	q951Full		BOOLEAN, 	-- if true, indicates full support for Q.951
	q952Full		BOOLEAN, 	-- if true, indicates full support for Q.952
	q953Full		BOOLEAN, 	-- if true, indicates full support for Q.953
	q955Full		BOOLEAN, 	-- if true, indicates full support for Q.955
	q956Full		BOOLEAN, 	-- if true, indicates full support for Q.956
	q957Full		BOOLEAN, 	-- if true, indicates full support for Q.957
	q954Info		Q954Details,	
	...
}

Q954Details ::= SEQUENCE
{
	conferenceCalling		BOOLEAN,
	threePartyService		BOOLEAN,
	...
}

ConferenceIdentifier	::=	OCTET STRING (SIZE(16))
RequestSeqNum		::=	INTEGER (1..65535)
GatekeeperIdentifier	::=	BMPString (SIZE(1..128))
BandWidth		::=	INTEGER (0.. 4294967295)	-- in 100s of bits
CallReferenceValue	::=	INTEGER (0..65535)
EndpointIdentifier	::=	BMPString (SIZE(1..128))
ProtocolIdentifier	::=	OBJECT IDENTIFIER	
					-- shall be set to  
					-- {itu-t (0) recommendation (0) h (8) 2250 version (0) 1}

H221NonStandard ::= SEQUENCE
{
	t35CountryCode		INTEGER(0..255),	-- country, as per T.35
	t35Extension		INTEGER(0..255),	-- assigned nationally
	manufacturerCode	INTEGER(0..65535),	-- assigned nationally
	...
}

NonStandardParameter ::= SEQUENCE
{
	nonStandardIdentifier	NonStandardIdentifier,
	data			OCTET STRING
}

NonStandardIdentifier ::= CHOICE
{
	object			OBJECT IDENTIFIER,
	h221NonStandard		H221NonStandard,
	...
}

RasMessage ::= CHOICE   
{
	gatekeeperRequest		GatekeeperRequest,
	gatekeeperConfirm		GatekeeperConfirm,
	gatekeeperReject		GatekeeperReject,
	registrationRequest		RegistrationRequest,
	registrationConfirm		RegistrationConfirm,
	registrationReject		RegistrationReject,
	unregistrationRequest		UnregistrationRequest,
	unregistrationConfirm		UnregistrationConfirm,
	unregistrationReject		UnregistrationReject,
	admissionRequest		AdmissionRequest,
	admissionConfirm		AdmissionConfirm,
	admissionReject			AdmissionReject,
	bandwidthRequest		BandwidthRequest,
	bandwidthConfirm		BandwidthConfirm,
	bandwidthReject			BandwidthReject,
	disengageRequest		DisengageRequest,
	disengageConfirm		DisengageConfirm,
	disengageReject			DisengageReject,
	locationRequest			LocationRequest,
	locationConfirm			LocationConfirm,
	locationReject			LocationReject, 
	infoRequest			InfoRequest,
	infoRequestResponse		InfoRequestResponse,
	nonStandardMessage		NonStandardMessage,
	unknownMessageResponse		UnknownMessageResponse,
	...
}

GatekeeperRequest ::= SEQUENCE --(GRQ)
{
	
	requestSeqNum			RequestSeqNum,
	protocolIdentifier		ProtocolIdentifier,
	nonStandardData			NonStandardParameter OPTIONAL,
	rasAddress			TransportAddress,
	endpointType			EndpointType,
	gatekeeperIdentifier		GatekeeperIdentifier OPTIONAL,
	callServices			QseriesOptions  OPTIONAL, 
	endpointAlias			SEQUENCE OF AliasAddress OPTIONAL,
	...
}

GatekeeperConfirm ::= SEQUENCE --(GCF)
{
	requestSeqNum			RequestSeqNum,
	protocolIdentifier		ProtocolIdentifier,
	nonStandardData			NonStandardParameter OPTIONAL,
	gatekeeperIdentifier		GatekeeperIdentifier  OPTIONAL,
	rasAddress			TransportAddress,
	...
}

GatekeeperReject ::= SEQUENCE --(GRJ)
{
	requestSeqNum			RequestSeqNum,
	protocolIdentifier		ProtocolIdentifier,
	nonStandardData			NonStandardParameter OPTIONAL,
	gatekeeperIdentifier		GatekeeperIdentifier  OPTIONAL,
	rejectReason			GatekeeperRejectReason,
	...
}

GatekeeperRejectReason ::= CHOICE
{
	resourceUnavailable		NULL,
	terminalExcluded		NULL,	-- permission failure, not a resource failure
	invalidRevision			NULL,
	undefinedReason			NULL,
	...
}

RegistrationRequest ::= SEQUENCE --(RRQ)
{
	requestSeqNum			RequestSeqNum,
	protocolIdentifier		ProtocolIdentifier,
	nonStandardData			NonStandardParameter OPTIONAL,
	discoveryComplete		BOOLEAN,
	callSignalAddress		SEQUENCE OF TransportAddress,
	rasAddress			SEQUENCE OF TransportAddress,
	terminalType			EndpointType,
	terminalAlias			SEQUENCE OF AliasAddress OPTIONAL,
	gatekeeperIdentifier		GatekeeperIdentifier  OPTIONAL,
	endpointVendor			VendorIdentifier,
	...
}

RegistrationConfirm ::= SEQUENCE --(RCF)
{
	requestSeqNum			RequestSeqNum,
	protocolIdentifier		ProtocolIdentifier,
	nonStandardData			NonStandardParameter OPTIONAL,
	callSignalAddress		SEQUENCE OF TransportAddress,
	terminalAlias			SEQUENCE OF AliasAddress OPTIONAL,
	gatekeeperIdentifier		GatekeeperIdentifier  OPTIONAL,
	endpointIdentifier		EndpointIdentifier,
	...
}

RegistrationReject ::= SEQUENCE --(RRJ)
{
	requestSeqNum			RequestSeqNum,
	protocolIdentifier		ProtocolIdentifier,
	nonStandardData			NonStandardParameter OPTIONAL,
	rejectReason			RegistrationRejectReason,
	gatekeeperIdentifier		GatekeeperIdentifier  OPTIONAL,
	...
}

RegistrationRejectReason ::= CHOICE
{
	discoveryRequired		NULL,	
	invalidRevision			NULL,
	invalidCallSignalAddress	NULL,
	invalidRASAddress		NULL,	-- supplied address is invalid
	duplicateAlias			SEQUENCE OF AliasAddress,
						-- alias registered to another endpoint
	invalidTerminalType		NULL,
	undefinedReason			NULL,
	transportNotSupported		NULL,	-- one or more of the transports
	...
}

UnregistrationRequest ::= SEQUENCE --(URQ)
{
	requestSeqNum			RequestSeqNum,
	callSignalAddress		SEQUENCE OF TransportAddress,
	endpointAlias			SEQUENCE OF AliasAddress OPTIONAL,
	nonStandardData			NonStandardParameter OPTIONAL,
	endpointIdentifier		EndpointIdentifier OPTIONAL,
	...
}

UnregistrationConfirm ::= SEQUENCE --(UCF)
{
	requestSeqNum			RequestSeqNum,
	nonStandardData			NonStandardParameter OPTIONAL,
	...
}

UnregistrationReject ::= SEQUENCE --(URJ)
{
	
	requestSeqNum			RequestSeqNum,
	rejectReason			UnregRejectReason,
	nonStandardData			NonStandardParameter OPTIONAL,
	...
}

UnregRejectReason ::= CHOICE
{
	notCurrentlyRegistered		NULL,
	callInProgress			NULL,
	undefinedReason			NULL,
	...
}

AdmissionRequest ::= SEQUENCE --(ARQ)
{
	requestSeqNum			RequestSeqNum,
	callType			CallType,
	callModel			CallModel OPTIONAL,
	endpointIdentifier		EndpointIdentifier,
	destinationInfo			SEQUENCE OF AliasAddress OPTIONAL,	-- Note 1
	destCallSignalAddress		TransportAddress OPTIONAL,		-- Note 1
	destExtraCallInfo		SEQUENCE OF AliasAddress OPTIONAL,
	srcInfo				SEQUENCE OF AliasAddress,
	srcCallSignalAddress		TransportAddress OPTIONAL, 
	bandWidth			BandWidth,
	callReferenceValue		CallReferenceValue,
	nonStandardData			NonStandardParameter OPTIONAL,
	callServices			QseriesOptions  OPTIONAL,
	conferenceID			ConferenceIdentifier,
	activeMC			BOOLEAN,
	answerCall			BOOLEAN,	-- answering a call
	...
}

CallType ::= CHOICE
{
	pointToPoint		NULL,		-- Point-to-point
	oneToN			NULL,		-- no interaction (FFS)
	nToOne			NULL,		-- no interaction (FFS)
	nToN			NULL,		-- interactive (multipoint)
	...
}

CallModel ::= CHOICE
{
	direct			NULL,
	gatekeeperRouted	NULL,
	...
}

AdmissionConfirm ::= SEQUENCE --(ACF)
{
	requestSeqNum			RequestSeqNum,
	bandWidth			BandWidth,
	callModel			CallModel,
	destCallSignalAddress		TransportAddress,
	irrFrequency			INTEGER (1..65535) OPTIONAL,
	nonStandardData			NonStandardParameter OPTIONAL,
	...
}

AdmissionReject ::= SEQUENCE --(ARJ)
{
	requestSeqNum		RequestSeqNum,
	rejectReason		AdmissionRejectReason,
	nonStandardData		NonStandardParameter OPTIONAL,
	...
}

AdmissionRejectReason ::= CHOICE
{
	calledPartyNotRegistered	NULL,	-- cannot translate address
	invalidPermission		NULL,	-- permission has expired
	requestDenied			NULL,	-- no bandwidth available
	undefinedReason			NULL,
	callerNotRegistered		NULL,
	routeCallToGatekeeper		NULL,
	invalidEndpointIdentifier	NULL,
	resourceUnavailable		NULL,
	...
}

BandwidthRequest ::= SEQUENCE --(BRQ)
{
	requestSeqNum			RequestSeqNum,
	endpointIdentifier		EndpointIdentifier,
	conferenceID			ConferenceIdentifier,
	callReferenceValue		CallReferenceValue,
	callType			CallType OPTIONAL,
	bandWidth			BandWidth,
	nonStandardData			NonStandardParameter OPTIONAL,
	...
}

BandwidthConfirm ::= SEQUENCE --(BCF)
{
	requestSeqNum			RequestSeqNum,
	bandWidth			BandWidth,
	nonStandardData			NonStandardParameter OPTIONAL,
	...
}

BandwidthReject ::= SEQUENCE --(BRJ)
{
	requestSeqNum			RequestSeqNum,
	rejectReason			BandRejectReason,
	allowedBandWidth		BandWidth,
	nonStandardData			NonStandardParameter OPTIONAL,
	...
}

BandRejectReason ::= CHOICE
{
	notBound			NULL,	-- discovery permission has aged
	invalidConferenceID		NULL,	-- possible revision
	invalidPermission		NULL,	-- true permission violation
	insufficientResources		NULL,
	invalidRevision			NULL,
	undefinedReason			NULL,
	...
}

LocationRequest ::= SEQUENCE --(LRQ)
{
	requestSeqNum			RequestSeqNum,
	endpointIdentifier		EndpointIdentifier OPTIONAL,
	destinationInfo			SEQUENCE OF AliasAddress,
	nonStandardData			NonStandardParameter OPTIONAL,
	replyAddress			TransportAddress,
	...
}

LocationConfirm ::= SEQUENCE --(LCF)
{
	requestSeqNum			RequestSeqNum,
	callSignalAddress		TransportAddress,
	rasAddress			TransportAddress,
	nonStandardData			NonStandardParameter OPTIONAL,
	...
}

LocationReject ::= SEQUENCE --(LRJ)
{
	requestSeqNum			RequestSeqNum,
	rejectReason			LocationRejectReason,
	nonStandardData			NonStandardParameter OPTIONAL,
	...
}

LocationRejectReason ::= CHOICE
{
	notRegistered		NULL,
	invalidPermission	NULL,	-- exclusion by administrator or feature
	requestDenied		NULL,	-- cannot find location
	undefinedReason		NULL,
	...
}

DisengageRequest ::= SEQUENCE --(DRQ)
{
	requestSeqNum			RequestSeqNum,
	endpointIdentifier		EndpointIdentifier,
	conferenceID			ConferenceIdentifier,
	callReferenceValue		CallReferenceValue,
	disengageReason			DisengageReason,
	nonStandardData			NonStandardParameter OPTIONAL,
	...
}

DisengageReason ::= CHOICE
{
	forcedDrop			NULL,	-- gatekeeper is forcing the drop
	normalDrop			NULL,	-- associated with normal drop
	undefinedReason			NULL,
	...
}

DisengageConfirm ::= SEQUENCE --(DCF)
{
	requestSeqNum			RequestSeqNum,
	nonStandardData			NonStandardParameter OPTIONAL,
	...
}

DisengageReject ::= SEQUENCE --(DRJ)
{
	requestSeqNum			RequestSeqNum,
	rejectReason			DisengageRejectReason,
	nonStandardData			NonStandardParameter OPTIONAL,
	...
}

DisengageRejectReason ::= CHOICE
{
	notRegistered		NULL,	-- not registered with gatekeeper
	requestToDropOther	NULL, 	-- cannot request drop for others
	...
}

InfoRequest ::= SEQUENCE --(IRQ)
{
	requestSeqNum			RequestSeqNum,
	callReferenceValue		CallReferenceValue,
	nonStandardData			NonStandardParameter OPTIONAL,
	replyAddress			TransportAddress OPTIONAL,
	...
}

InfoRequestResponse ::= SEQUENCE --(IRR)
{
	nonStandardData			NonStandardParameter OPTIONAL,
	requestSeqNum			RequestSeqNum,
	endpointType			EndpointType,
	endpointIdentifier		EndpointIdentifier,
	rasAddress			TransportAddress,
	callSignalAddress		SEQUENCE OF TransportAddress,
	endpointAlias			SEQUENCE OF AliasAddress OPTIONAL,
	perCallInfo			SEQUENCE OF SEQUENCE
	{
		nonStandardData			NonStandardParameter OPTIONAL,
		callReferenceValue		CallReferenceValue,
		conferenceID			ConferenceIdentifier,
		originator			BOOLEAN OPTIONAL,
		audio				SEQUENCE OF RTPSession OPTIONAL,
		video				SEQUENCE OF RTPSession OPTIONAL,
		data				SEQUENCE OF TransportChannelInfo OPTIONAL,
		h245				TransportChannelInfo,
		callSignaling			TransportChannelInfo,
		callType			CallType,
		bandWidth			BandWidth,
		callModel			CallModel,
		...
	} OPTIONAL,
	...
}

TransportChannelInfo ::= SEQUENCE
{
	sendAddress			TransportAddress OPTIONAL,
	recvAddress			TransportAddress OPTIONAL,
	...
}

RTPSession ::= SEQUENCE
{
	rtpAddress			TransportChannelInfo,
	rtcpAddress			TransportChannelInfo,
	cname				PrintableString,
	ssrc				INTEGER (1..4294967295),
	sessionId			INTEGER (1..255),
	associatedSessionIds		SEQUENCE OF INTEGER (1..255),
	...
}

NonStandardMessage ::= SEQUENCE
{
	requestSeqNum			RequestSeqNum,
	nonStandardData			NonStandardParameter,
	...
}

UnknownMessageResponse ::= SEQUENCE	--(XRS)
{
	requestSeqNum			RequestSeqNum,
	...
}

END		-- of ASN.1