h245.asn

基于h323协议的软phone

}

EncryptionSync  ::=SEQUENCE
                     -- used to supply new key and synchronization point
{
    nonStandard             NonStandardParameter OPTIONAL,
    synchFlag   INTEGER(0..255) ,   -- may need to be larger for H.324, etc
                    -- shall be the Dynamic Payload# for H.323
    h235Key OCTET STRING (SIZE(1..65535)),  -- H.235 encoded value
    escrowentry SEQUENCE SIZE(1..256) OF EscrowData OPTIONAL,
    ...
}

EscrowData  ::=SEQUENCE
{
    escrowID    OBJECT IDENTIFIER,
    escrowValue BIT STRING (SIZE(1..65535)),
    ...
}

OpenLogicalChannelAck   ::=SEQUENCE
{
    forwardLogicalChannelNumber LogicalChannelNumber,

    reverseLogicalChannelParameters SEQUENCE
    {
        reverseLogicalChannelNumber LogicalChannelNumber,
        portNumber  INTEGER (0..65535) OPTIONAL,
        multiplexParameters CHOICE
        {
            h222LogicalChannelParameters    H222LogicalChannelParameters,
            -- H.223 parameters are never present in reverse direction
            ...,
            h2250LogicalChannelParameters H2250LogicalChannelParameters

        } OPTIONAL, -- Not present for H.223
        ...,
        replacementFor  LogicalChannelNumber OPTIONAL

    } OPTIONAL, -- Not present for uni-directional channel request
    ...,
    separateStack   NetworkAccessParameters OPTIONAL,
                -- for Open requester to establish the stack
    forwardMultiplexAckParameters   CHOICE
    {
        -- H.222 parameters are never present in the Ack
        -- H.223 parameters are never present in the Ack
        --V.76 parameters are never present in the Ack
        h2250LogicalChannelAckParameters H2250LogicalChannelAckParameters,
        ...
    } OPTIONAL,
    encryptionSync  EncryptionSync OPTIONAL -- used only by Master
}

OpenLogicalChannelReject    ::=SEQUENCE
{
    forwardLogicalChannelNumber LogicalChannelNumber,
    cause       CHOICE
    {
        unspecified NULL,
        unsuitableReverseParameters NULL,
        dataTypeNotSupported    NULL,
        dataTypeNotAvailable    NULL,
        unknownDataType NULL,
        dataTypeALCombinationNotSupported   NULL,
        ...,
        multicastChannelNotAllowed  NULL,
        insufficientBandwidth   NULL,
        separateStackEstablishmentFailed    NULL,
        invalidSessionID    NULL,
        masterSlaveConflict NULL,
        waitForCommunicationMode    NULL,
        invalidDependentChannel NULL,
        replacementForRejected  NULL
    },
    ...
}

OpenLogicalChannelConfirm   ::=SEQUENCE
{
    forwardLogicalChannelNumber LogicalChannelNumber,
    ...
}

H2250LogicalChannelAckParameters    ::=SEQUENCE
{
    nonStandard SEQUENCE OF NonStandardParameter OPTIONAL,
    sessionID   INTEGER(1..255) OPTIONAL,
    mediaChannel    TransportAddress OPTIONAL,
    mediaControlChannel TransportAddress OPTIONAL, -- forward RTCP channel
    dynamicRTPPayloadType   INTEGER(96..127) OPTIONAL, -- used only by the master or MC
    ...,
    flowControlToZero   BOOLEAN,
    portNumber  INTEGER (0..65535) OPTIONAL
}



CloseLogicalChannel ::=SEQUENCE
{
    forwardLogicalChannelNumber LogicalChannelNumber,
    source      CHOICE
    {
        user    NULL,
        lcse    NULL
    },
    ...,
    reason      CHOICE
    {
        unknown NULL,
        reopen  NULL,
        reservationFailure  NULL,
        ...
    }
}

CloseLogicalChannelAck  ::=SEQUENCE
{
    forwardLogicalChannelNumber LogicalChannelNumber,
    ...
}

RequestChannelClose ::=SEQUENCE
{
    forwardLogicalChannelNumber LogicalChannelNumber,
    ...,
    qosCapability   QOSCapability OPTIONAL,
    reason      CHOICE
    {
        unknown NULL,
        normal  NULL,
        reopen  NULL,
        reservationFailure  NULL,
        ...
    }
}

RequestChannelCloseAck  ::=SEQUENCE
{
    forwardLogicalChannelNumber LogicalChannelNumber,
    ...
}

RequestChannelCloseReject   ::=SEQUENCE
{
    forwardLogicalChannelNumber LogicalChannelNumber,
    cause       CHOICE
    {
        unspecified NULL,
        ...
    },
    ...
}

RequestChannelCloseRelease  ::=SEQUENCE
{
    forwardLogicalChannelNumber LogicalChannelNumber,
    ...
}


-- ===================================================================================
-- H.223 multiplex table definitions
-- ===================================================================================

MultiplexEntrySend  ::=SEQUENCE
{
    sequenceNumber  SequenceNumber,
    multiplexEntryDescriptors   SET SIZE (1..15) OF MultiplexEntryDescriptor,
    ...
}

MultiplexEntryDescriptor    ::=SEQUENCE
{
    multiplexTableEntryNumber   MultiplexTableEntryNumber,
    elementList SEQUENCE SIZE (1..256) OF MultiplexElement OPTIONAL
}

MultiplexElement    ::=SEQUENCE
{
    type        CHOICE
    {
        logicalChannelNumber    INTEGER(0..65535),
        subElementList  SEQUENCE SIZE (2..255) OF MultiplexElement
    },
    repeatCount CHOICE
    {
        finite  INTEGER (1..65535), -- repeats of type
        untilClosingFlag    NULL    -- used for last element
    }
}

MultiplexTableEntryNumber   ::=INTEGER (1..15)

MultiplexEntrySendAck   ::=SEQUENCE
{
    sequenceNumber  SequenceNumber,
    multiplexTableEntryNumber   SET SIZE (1..15) OF MultiplexTableEntryNumber,
    ...
}

MultiplexEntrySendReject    ::=SEQUENCE
{
    sequenceNumber  SequenceNumber,
    rejectionDescriptions   SET SIZE (1..15) OF MultiplexEntryRejectionDescriptions,
    ...
}

MultiplexEntryRejectionDescriptions ::=SEQUENCE
{
    multiplexTableEntryNumber   MultiplexTableEntryNumber,
    cause       CHOICE
    {
        unspecifiedCause    NULL,
        descriptorTooComplex    NULL,
        ...
    },
    ...
}

MultiplexEntrySendRelease   ::=SEQUENCE
{
    multiplexTableEntryNumber   SET SIZE (1..15) OF MultiplexTableEntryNumber,
    ...
}

RequestMultiplexEntry   ::=SEQUENCE
{
    entryNumbers    SET SIZE (1..15) OF MultiplexTableEntryNumber,
    ...
}

RequestMultiplexEntryAck    ::=SEQUENCE
{
    entryNumbers    SET SIZE (1..15) OF MultiplexTableEntryNumber,
    ...
}

RequestMultiplexEntryReject ::=SEQUENCE
{
    entryNumbers    SET SIZE (1..15) OF MultiplexTableEntryNumber,
    rejectionDescriptions   SET SIZE (1..15) OF RequestMultiplexEntryRejectionDescriptions,
    ...
}

RequestMultiplexEntryRejectionDescriptions  ::=SEQUENCE
{
    multiplexTableEntryNumber   MultiplexTableEntryNumber,
    cause       CHOICE
    {
        unspecifiedCause    NULL,
        ...
    },
    ...
}

RequestMultiplexEntryRelease    ::=SEQUENCE
{
    entryNumbers    SET SIZE (1..15) OF MultiplexTableEntryNumber,
    ...
}


-- ===================================================================================
-- Request mode definitions
-- ===================================================================================

-- RequestMode is a list, in order or preference, of modes that a terminal would like
-- to have transmitted to it.

RequestMode ::=SEQUENCE
{
    sequenceNumber  SequenceNumber,
    requestedModes  SEQUENCE SIZE (1..256) OF ModeDescription,
    ...
}

RequestModeAck  ::=SEQUENCE
{
    sequenceNumber  SequenceNumber,
    response    CHOICE
    {
        willTransmitMostPreferredMode   NULL,
        willTransmitLessPreferredMode   NULL,
        ...
    },
    ...
}

RequestModeReject   ::=SEQUENCE
{
    sequenceNumber  SequenceNumber,
    cause       CHOICE
    {
        modeUnavailable NULL,
        multipointConstraint    NULL,
        requestDenied   NULL,
        ...
    },
    ...
}

RequestModeRelease  ::=SEQUENCE
{
    ...
}

-- ===================================================================================
-- Request mode definitions: Mode description
-- ===================================================================================

ModeDescription ::=SET SIZE (1..256) OF ModeElement

ModeElement ::= SEQUENCE
{
    type        CHOICE
    {
        nonStandard NonStandardParameter,
        videoMode   VideoMode,
        audioMode   AudioMode,
        dataMode    DataMode,
        encryptionMode  EncryptionMode,
        ...,
        h235Mode    H235Mode,
        multiplexedStreamMode   MultiplexedStreamParameter
    },

    h223ModeParameters  H223ModeParameters OPTIONAL,
    ...,
    v76ModeParameters   V76ModeParameters OPTIONAL,
    h2250ModeParameters H2250ModeParameters OPTIONAL,
    genericModeParameters   GenericCapability OPTIONAL,
    multiplexedStreamModeParameters MultiplexedStreamModeParameters OPTIONAL


}

H235Mode        ::=SEQUENCE
{
    encryptionAuthenticationAndIntegrity    EncryptionAuthenticationAndIntegrity,

    mediaMode   CHOICE
    {
        nonStandard NonStandardParameter,
        videoMode   VideoMode,
        audioMode   AudioMode,
        dataMode    DataMode,
        ...
    },
    ...
}

MultiplexedStreamModeParameters ::=SEQUENCE
{
    logicalChannelNumber    LogicalChannelNumber,
    ...
}

H223ModeParameters  ::=SEQUENCE
{
    adaptationLayerType CHOICE
    {
        nonStandard NonStandardParameter,
        al1Framed   NULL,
        al1NotFramed    NULL,
        al2WithoutSequenceNumbers   NULL,
        al2WithSequenceNumbers  NULL,
        al3     SEQUENCE
        {
            controlFieldOctets  INTEGER(0..2),
            sendBufferSize  INTEGER(0..16777215)    -- units octets
        },
        ...,
        al1M    H223AL1MParameters,
        al2M    H223AL2MParameters,
        al3M    H223AL3MParameters

    },

    segmentableFlag BOOLEAN,
    ...
}

V76ModeParameters   ::=CHOICE
{
    suspendResumewAddress   NULL,
    suspendResumewoAddress  NULL,
    ...
}

H2250ModeParameters ::=SEQUENCE
{
    redundancyEncodingMode  RedundancyEncodingMode OPTIONAL,
    ...
}

RedundancyEncodingMode  ::=SEQUENCE
{
    redundancyEncodingMethod    RedundancyEncodingMethod,
    secondaryEncoding   CHOICE
    {
        nonStandard NonStandardParameter,
        audioData   AudioMode,
        ...
    } OPTIONAL,
    ...
}

-- ===================================================================================
-- Request mode definitions: Video modes
-- ===================================================================================

VideoMode       ::=CHOICE
{
    nonStandard NonStandardParameter,
    h261VideoMode   H261VideoMode,
    h262VideoMode   H262VideoMode,
    h263VideoMode   H263VideoMode,
    is11172VideoMode    IS11172VideoMode,
    ...,
    genericVideoMode    GenericCapability
}

H261VideoMode   ::=SEQUENCE
{
    resolution  CHOICE
    {
        qcif    NULL,
        cif     NULL
    },
    bitRate INTEGER (1..19200), -- units 100 bit/s
    stillImageTransmission  BOOLEAN,
    ...
}

H262VideoMode   ::=SEQUENCE
{
    profileAndLevel CHOICE
    {
        profileAndLevel-SPatML  NULL,
        profileAndLevel-MPatLL  NULL,
        profileAndLevel-MPatML  NULL,
        profileAndLevel-MPatH-14    NULL,
        profileAndLevel-MPatHL  NULL,
        profileAndLevel-SNRatLL NULL,
        profileAndLevel-SNRatML NULL,
        profileAndLevel-SpatialatH-14   NULL,
        profileAndLevel-HPatML  NULL,
        profileAndLevel-HPatH-14    NULL,
        profileAndLevel-HPatHL  NULL,
        ...
    },
    videoBitRate    INTEGER(0..1073741823) OPTIONAL,    -- units 400bit/s
    vbvBufferSize   INTEGER(0..262143) OPTIONAL,    -- units 16384bits
    samplesPerLine  INTEGER(0..16383) OPTIONAL, -- units samples/line
    linesPerFrame   INTEGER(0..16383) OPTIONAL, -- units lin