CallCreditServiceControl ::= SEQUENCE
{
        amountString                    BMPString (SIZE (1..512)) OPTIONAL,     -- (Unicode)
        billingMode CHOICE
        {
                credit                  NULL,
                debit                   NULL,
                ...
        } OPTIONAL,
        callDurationLimit               INTEGER (1..4294967295) OPTIONAL,     -- in seconds
        enforceCallDurationLimit        BOOLEAN OPTIONAL,
        callStartingPoint CHOICE
        {
                alerting                NULL,
                connect                 NULL,
                ...
        } OPTIONAL,
        ...
}

GenericData ::= SEQUENCE
{
        id                              GenericIdentifier,
        parameters                      SEQUENCE (SIZE (1..512)) OF EnumeratedParameter OPTIONAL,
        ...
}

GenericIdentifier ::= CHOICE
{
        standard                        INTEGER(0..16383,...),
        oid                             OBJECT IDENTIFIER,
        nonStandard                     GloballyUniqueID,
        ...
}

EnumeratedParameter ::= SEQUENCE
{
        id                              GenericIdentifier,
        content                         Content OPTIONAL,
        ...
}

Content ::= CHOICE
{
        raw                             OCTET STRING,
        text                            IA5String,
        unicode                         BMPString,
        bool                            BOOLEAN,
        number8                         INTEGER (0..255),
        number16                        INTEGER (0..65535),
        number32                        INTEGER (0..4294967295),
        id                              GenericIdentifier,
        alias                           AliasAddress,
        transport                       TransportAddress,
        compound                        SEQUENCE (SIZE (1..512)) OF EnumeratedParameter,
        nested                          SEQUENCE (SIZE (1..16)) OF GenericData,
        ...
}

FeatureSet ::= SEQUENCE
{
        replacementFeatureSet           BOOLEAN,
        neededFeatures                  SEQUENCE OF FeatureDescriptor OPTIONAL,
        desiredFeatures                 SEQUENCE OF FeatureDescriptor OPTIONAL,
        supportedFeatures               SEQUENCE OF FeatureDescriptor 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),
        ...,
        multicast                       NULL OPTIONAL,
        bandwidth                       BandWidth OPTIONAL
}

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,
        ...,
        requestInProgress               RequestInProgress,
        resourcesAvailableIndicate      ResourcesAvailableIndicate,
        resourcesAvailableConfirm       ResourcesAvailableConfirm,
        infoRequestAck                  InfoRequestAck,
        infoRequestNak                  InfoRequestNak,
        serviceControlIndication        ServiceControlIndication,
        serviceControlResponse          ServiceControlResponse
}

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,
        ...,
        alternateEndpoints              SEQUENCE OF Endpoint OPTIONAL,
        tokens                          SEQUENCE OF ClearToken OPTIONAL,
        cryptoTokens                    SEQUENCE OF CryptoH323Token OPTIONAL,
        authenticationCapability        SEQUENCE OF AuthenticationMechanism OPTIONAL,
        algorithmOIDs                   SEQUENCE OF OBJECT IDENTIFIER OPTIONAL,
        integrity                       SEQUENCE OF IntegrityMechanism OPTIONAL,
        integrityCheckValue             ICV OPTIONAL,
        supportsAltGK                   NULL OPTIONAL,
        featureSet                      FeatureSet OPTIONAL,
        genericData                     SEQUENCE OF GenericData OPTIONAL
}

GatekeeperConfirm ::= SEQUENCE --(GCF)
{
        requestSeqNum                   RequestSeqNum,
        protocolIdentifier              ProtocolIdentifier,
        nonStandardData                 NonStandardParameter OPTIONAL,
        gatekeeperIdentifier            GatekeeperIdentifier  OPTIONAL,
        rasAddress                      TransportAddress,
        ...,
        alternateGatekeeper             SEQUENCE OF AlternateGK OPTIONAL,
        authenticationMode              AuthenticationMechanism OPTIONAL,
        tokens                          SEQUENCE OF ClearToken OPTIONAL,
        cryptoTokens                    SEQUENCE OF CryptoH323Token OPTIONAL,
        algorithmOID                    OBJECT IDENTIFIER OPTIONAL,
        integrity                       SEQUENCE OF IntegrityMechanism OPTIONAL,
        integrityCheckValue             ICV OPTIONAL,
        featureSet                      FeatureSet OPTIONAL,
        genericData                     SEQUENCE OF GenericData OPTIONAL
}

GatekeeperReject ::= SEQUENCE --(GRJ)
{
        requestSeqNum                   RequestSeqNum,
        protocolIdentifier              ProtocolIdentifier,
        nonStandardData                 NonStandardParameter OPTIONAL,
        gatekeeperIdentifier            GatekeeperIdentifier  OPTIONAL,
        rejectReason                    GatekeeperRejectReason,
        ...,
        altGKInfo                       AltGKInfo OPTIONAL,
        tokens                          SEQUENCE OF ClearToken OPTIONAL,
        cryptoTokens                    SEQUENCE OF CryptoH323Token OPTIONAL,
        integrityCheckValue             ICV OPTIONAL,
        featureSet                      FeatureSet OPTIONAL,
        genericData                     SEQUENCE OF GenericData OPTIONAL
}

GatekeeperRejectReason ::= CHOICE
{
        resourceUnavailable             NULL,
        terminalExcluded                NULL,   -- permission failure, not a resource failure
        invalidRevision                 NULL,
        undefinedReason                 NULL,
        ...,
        securityDenial                  NULL,
        genericDataReason               NULL,
        neededFeatureNotSupported       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,
        ...,
        alternateEndpoints              SEQUENCE OF Endpoint OPTIONAL,
        timeToLive                      TimeToLive OPTIONAL,
        tokens                          SEQUENCE OF ClearToken OPTIONAL,
        cryptoTokens                    SEQUENCE OF CryptoH323Token OPTIONAL,
        integrityCheckValue             ICV OPTIONAL,
        keepAlive                       BOOLEAN,
        endpointIdentifier              EndpointIdentifier OPTIONAL,
        willSupplyUUIEs                 BOOLEAN,
        maintainConnection              BOOLEAN,
        alternateTransportAddresses     AlternateTransportAddresses OPTIONAL,
        additiveRegistration            NULL OPTIONAL,
        terminalAliasPattern            SEQUENCE OF AddressPattern OPTIONAL,
        supportsAltGK                   NULL OPTIONAL,
        usageReportingCapability        RasUsageInfoTypes OPTIONAL,
        multipleCalls                   BOOLEAN OPTIONAL,
        supportedH248Packages           SEQUENCE OF H248PackagesDescriptor OPTIONAL,
        callCreditCapability            CallCreditCapability OPTIONAL,
        capacityReportingCapability     CapacityReportingCapability OPTIONAL,
        capacity                        CallCapacity OPTIONAL,
        featureSet                      FeatureSet OPTIONAL,
        genericData                     SEQUENCE OF GenericData OPTIONAL
}

RegistrationConfirm ::= SEQUENCE --(RCF)
{
        requestSeqNum                   RequestSeqNum,
        protocolIdentifier              ProtocolIdentifier,
        nonStandardData                 NonStandardParameter OPTIONAL,
        callSignalAddress               SEQUENCE OF TransportAddress,
        terminalAlias                   SEQUENCE OF AliasAddress OPTIONAL,
        gatekeeperIdentifier            GatekeeperIdentifier  OPTIONAL,
        endpointIdentifier              EndpointIdentifier,
        ...,
        alternateGatekeeper             SEQUENCE OF AlternateGK OPTIONAL,
        timeToLive                      TimeToLive OPTIONAL,
        tokens                          SEQUENCE OF ClearToken OPTIONAL,
        cryptoTokens                    SEQUENCE OF CryptoH323Token OPTIONAL,
        integrityCheckValue             ICV OPTIONAL,
        willRespondToIRR                BOOLEAN,
        preGrantedARQ                   SEQUENCE
        {
                makeCall                                BOOLEAN,
                useGKCallSignalAddressToMakeCall        BOOLEAN,
                answerCall                              BOOLEAN,
                useGKCallSignalAddressToAnswer          BOOLEAN,
                ...,
                irrFrequencyInCall                      INTEGER (1..65535) OPTIONAL,
                                                                        -- in seconds; not
                                                                        -- present if GK
                                                                        -- does not want IRRs
                totalBandwidthRestriction               BandWidth OPTIONAL,
                                                                        -- total limit for all
-- concurrent calls
                alternateTransportAddresses             AlternateTransportAddresses OPTIONAL,
                useSpecifiedTransport                   UseSpecifiedTransport OPTIONAL
        } OPTIONAL,
        maintainConnection              BOOLEAN,
        serviceControl                  SEQUENCE OF ServiceControlSession OPTIONAL,
        supportsAdditiveRegistration    NULL OPTIONAL,
        terminalAliasPattern            SEQUENCE OF AddressPattern OPTIONAL,
        supportedPrefixes               SEQUENCE OF SupportedPrefix OPTIONAL,
        usageSpec                       SEQUENCE OF RasUsageSpecification OPTIONAL,
        featureServerAlias              AliasAddress OPTIONAL,
        capacityReportingSpec           CapacityReportingSpecification OPTIONAL,
        featureSet                      FeatureSet OPTIONAL,
        genericData                     SEQUENCE OF GenericData OPTIONAL
}

RegistrationReject ::= SEQUENCE --(RRJ)
{
        requestSeqNum                   RequestSeqNum,
        protocolIdentifier              ProtocolIdentifier,
        nonStandardData                 NonStandardParameter OPTIONAL,
        rejectReason                    RegistrationRejectReason,
        gatekeeperIdentifier            GatekeeperIdentifier  OPTIONAL,
        ...,
        altGKInfo                       AltGKInfo OPTIONAL,
        tokens                          SEQUENCE OF ClearToken OPTIONAL,
        cryptoTokens                    SEQUENCE OF CryptoH323Token OPTIONAL,
        integrityCheckValue             ICV OPTIONAL,
        featureSet                      FeatureSet OPTIONAL,
        genericData                     SEQUENCE OF GenericData 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
        ...,