h245.asn

基于h323协议的软phone

    dynamicRTPPayloadType   INTEGER(96..127),
    audioTelephoneEvent GeneralString, -- As per <list of values> in 3.9/RFC2833
    ...
}

AudioToneCapability ::=SEQUENCE
{
    dynamicRTPPayloadType   INTEGER(96..127),
    ...
}

-- ===================================================================================
-- Logical channel signalling definitions
-- ===================================================================================

-- "Forward" is used to refer to transmission in the direction from the terminal making the
-- original request for a logical channel to the other terminal, and "reverse" is used to refer
-- to the opposite direction of transmission, in the case of a bi-directional channel request.

OpenLogicalChannel  ::=SEQUENCE
{
    forwardLogicalChannelNumber LogicalChannelNumber,

    forwardLogicalChannelParameters SEQUENCE
    {
        portNumber  INTEGER (0..65535) OPTIONAL,
        dataType    DataType,
        multiplexParameters CHOICE
        {
            h222LogicalChannelParameters    H222LogicalChannelParameters,
            h223LogicalChannelParameters    H223LogicalChannelParameters,
            v76LogicalChannelParameters V76LogicalChannelParameters,
            ...,
            h2250LogicalChannelParameters   H2250LogicalChannelParameters,
            none    NULL  -- for use with Separate Stack when
                  -- multiplexParameters are not required
                  -- or appropriate

        },
        ...,
        forwardLogicalChannelDependency LogicalChannelNumber OPTIONAL,
            -- also used to refer to the primary logical channel when using video redundancy coding
        replacementFor  LogicalChannelNumber OPTIONAL

    },

    -- Used to specify the reverse channel for bi-directional open request

    reverseLogicalChannelParameters SEQUENCE
    {
        dataType    DataType,
        multiplexParameters CHOICE
        {
            -- H.222 parameters are never present in reverse direction
            h223LogicalChannelParameters    H223LogicalChannelParameters,
            v76LogicalChannelParameters V76LogicalChannelParameters,
            ...,
            h2250LogicalChannelParameters H2250LogicalChannelParameters

        } OPTIONAL, -- Not present for H.222
        ...,
        reverseLogicalChannelDependency LogicalChannelNumber OPTIONAL,
            -- also used to refer to the primary logical channel when using video redundancy coding
        replacementFor  LogicalChannelNumber OPTIONAL

    } OPTIONAL, -- Not present for uni-directional channel request
    ...,
    separateStack   NetworkAccessParameters OPTIONAL,
                -- for Open responder to establish the stack
    encryptionSync  EncryptionSync OPTIONAL -- used only by Master


}

LogicalChannelNumber    ::=INTEGER (1..65535)

NetworkAccessParameters ::=SEQUENCE
{
    distribution    CHOICE
    {
        unicast NULL,
        multicast   NULL,   -- For Further Study in T.120
        ...
    } OPTIONAL,

    networkAddress  CHOICE
    {
        q2931Address    Q2931Address,
        e164Address IA5String(SIZE(1..128)) (FROM ("0123456789#*,")),
        localAreaAddress    TransportAddress,
        ...
    },
    associateConference BOOLEAN,
    externalReference   OCTET STRING(SIZE(1..255)) OPTIONAL,
    ...,
    t120SetupProcedure  CHOICE
    {

        originateCall   NULL,
        waitForCall NULL,
        issueQuery  NULL,
        ...
    } OPTIONAL
}

Q2931Address    ::=SEQUENCE
{
    address CHOICE
    {
        internationalNumber NumericString(SIZE(1..16)),
        nsapAddress OCTET STRING (SIZE(1..20)),
        ...
    },
    subaddress  OCTET STRING (SIZE(1..20)) OPTIONAL,
    ...
}

V75Parameters   ::= SEQUENCE
{
    audioHeaderPresent  BOOLEAN,
     ...
}


DataType        ::=CHOICE
{
    nonStandard NonStandardParameter,
    nullData    NULL,
    videoData   VideoCapability,
    audioData   AudioCapability,
    data        DataApplicationCapability,
    encryptionData  EncryptionMode,
    ...,
    h235Control NonStandardParameter,
    h235Media   H235Media,
    multiplexedStream   MultiplexedStreamParameter
}

H235Media       ::=SEQUENCE
{
    encryptionAuthenticationAndIntegrity    EncryptionAuthenticationAndIntegrity,

    mediaType   CHOICE
    {
        nonStandard NonStandardParameter,
        videoData   VideoCapability,
        audioData   AudioCapability,
        data    DataApplicationCapability,
        ...
    },

    ...
}

MultiplexedStreamParameter  ::=SEQUENCE
{
    multiplexFormat MultiplexFormat,
    controlOnMuxStream  BOOLEAN,
    ...
}

H222LogicalChannelParameters    ::=SEQUENCE
{
    resourceID  INTEGER (0..65535),
    subChannelID    INTEGER (0..8191),
    pcr-pid INTEGER (0..8191) OPTIONAL,
    programDescriptors  OCTET STRING OPTIONAL,
    streamDescriptors   OCTET STRING OPTIONAL,
    ...
}

H223LogicalChannelParameters    ::=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,
    ...
}

H223AL1MParameters  ::=SEQUENCE
{
    transferMode    CHOICE
    {
        framed  NULL,
        unframed    NULL,
        ...
    },
    headerFEC   CHOICE
    {
        sebch16-7   NULL,
        golay24-12  NULL,
        ...
    },
    crcLength   CHOICE
    {
        crc4bit NULL,
        crc12bit    NULL,
        crc20bit    NULL,
        crc28bit    NULL,
        ...,
        crc8bit NULL,
        crc16bit    NULL,
        crc32bit    NULL,
        crcNotUsed  NULL
    },

    rcpcCodeRate    INTEGER (8..32),

    arqType CHOICE
    {
        noArq   NULL,
        typeIArq    H223AnnexCArqParameters,
        typeIIArq   H223AnnexCArqParameters,
        ...
    },
    alpduInterleaving   BOOLEAN,
    alsduSplitting  BOOLEAN,
    ...,
    rsCodeCorrection    INTEGER (0..127) OPTIONAL
}

H223AL2MParameters  ::=SEQUENCE
{
    headerFEC   CHOICE
    {
        sebch16-5   NULL,
        golay24-12  NULL,
        ...
    },
    alpduInterleaving   BOOLEAN,
    ...
}

H223AL3MParameters  ::=SEQUENCE
{
    headerFormat    CHOICE
    {
        sebch16-7   NULL,
        golay24-12  NULL,
        ...
    },
    crcLength   CHOICE
    {
        crc4bit NULL,
        crc12bit    NULL,
        crc20bit    NULL,
        crc28bit    NULL,
        ...,
        crc8bit NULL,
        crc16bit    NULL,
        crc32bit    NULL,
        crcNotUsed  NULL
    },

    rcpcCodeRate    INTEGER (8..32),

    arqType CHOICE
    {
        noArq   NULL,
        typeIArq    H223AnnexCArqParameters,
        typeIIArq   H223AnnexCArqParameters,
        ...
    },

    alpduInterleaving   BOOLEAN,
    ...,
    rsCodeCorrection    INTEGER (0..127) OPTIONAL
}


H223AnnexCArqParameters ::=SEQUENCE
{
    numberOfRetransmissions CHOICE
    {
        finite  INTEGER (0..16),
        infinite    NULL,
        ...
    },
    sendBufferSize  INTEGER (0..16777215),  -- units octets
    ...
}

V76LogicalChannelParameters ::=SEQUENCE
{
    hdlcParameters  V76HDLCParameters,
    suspendResume   CHOICE
    {
        noSuspendResume NULL,
        suspendResumewAddress   NULL,
            suspendResumewoAddress      NULL,
        ...
    },
    uIH         BOOLEAN,
    mode        CHOICE
    {
        eRM SEQUENCE
        {
            windowSize  INTEGER (1..127) ,
            recovery    CHOICE
            {
                rej NULL,
                sREJ    NULL,
                mSREJ   NULL,
                ...
            },
            ...
        },
        uNERM   NULL,
        ...
    },
    v75Parameters   V75Parameters,
    ...
}



V76HDLCParameters   ::=SEQUENCE
{
    crcLength   CRCLength,
    n401        INTEGER (1..4095),
    loopbackTestProcedure   BOOLEAN,
    ...
}


CRCLength   ::=CHOICE
{
    crc8bit     NULL,
    crc16bit    NULL,
    crc32bit    NULL,
    ...
}

H2250LogicalChannelParameters   ::=SEQUENCE
{
    nonStandard SEQUENCE OF NonStandardParameter OPTIONAL,
    sessionID   INTEGER(0..255),
    associatedSessionID INTEGER(1..255) OPTIONAL,
    mediaChannel    TransportAddress OPTIONAL,
    mediaGuaranteedDelivery BOOLEAN OPTIONAL,
    mediaControlChannel TransportAddress OPTIONAL,  -- reverse RTCP channel
    mediaControlGuaranteedDelivery  BOOLEAN OPTIONAL,
    silenceSuppression  BOOLEAN OPTIONAL,
    destination TerminalLabel OPTIONAL,

    dynamicRTPPayloadType   INTEGER(96..127) OPTIONAL,
    mediaPacketization  CHOICE
    {
        h261aVideoPacketization NULL,
        ...,
        rtpPayloadType  RTPPayloadType
    } OPTIONAL,
    ...,
    transportCapability TransportCapability OPTIONAL,
    redundancyEncoding  RedundancyEncoding OPTIONAL,
    source      TerminalLabel OPTIONAL
}

RTPPayloadType  ::= SEQUENCE
{
    payloadDescriptor   CHOICE
    {
        nonStandardIdentifier   NonStandardParameter,
        rfc-number  INTEGER (1..32768, ...),
        oid OBJECT IDENTIFIER,
        ...
    },
    payloadType INTEGER (0..127) OPTIONAL,
    ...
}

RedundancyEncoding  ::=SEQUENCE
{
    redundancyEncodingMethod    RedundancyEncodingMethod,
    secondaryEncoding   DataType OPTIONAL,  -- depends on method
    ...
}

TransportAddress    ::=CHOICE
{
    unicastAddress  UnicastAddress,
    multicastAddress    MulticastAddress,
    ...
}

UnicastAddress  ::=CHOICE
{
    iPAddress   SEQUENCE
    {
        network OCTET STRING (SIZE(4)),
        tsapIdentifier  INTEGER(0..65535),
        ...
    },
    iPXAddress  SEQUENCE
    {
        node    OCTET STRING (SIZE(6)),
        netnum  OCTET STRING (SIZE(4)),
        tsapIdentifier  OCTET STRING (SIZE(2)),
        ...
    },
    iP6Address  SEQUENCE
    {
        network OCTET STRING (SIZE(16)),
        tsapIdentifier  INTEGER(0..65535),
        ...
    },
    netBios OCTET STRING (SIZE(16)),
    iPSourceRouteAddress    SEQUENCE
    {
        routing CHOICE
        {
            strict  NULL,
            loose   NULL
        },
        network OCTET STRING (SIZE(4)),
        tsapIdentifier  INTEGER(0..65535),
        route   SEQUENCE OF OCTET STRING (SIZE(4)),
        ...
    },
    ...,
    nsap        OCTET STRING (SIZE(1..20)),
    nonStandardAddress  NonStandardParameter
}

MulticastAddress    ::=CHOICE
{
    iPAddress   SEQUENCE
    {
        network OCTET STRING (SIZE(4)),
        tsapIdentifier  INTEGER(0..65535),
        ...
    },
    iP6Address  SEQUENCE
    {
        network OCTET STRING (SIZE(16)),
        tsapIdentifier  INTEGER(0..65535),
        ...
    },
    ...,
    nsap        OCTET STRING (SIZE(1..20)),
    nonStandardAddress  NonStandardParameter