| coIfTypeExtn | 
      .1.3.6.1.4.1.9.10.66.1.1.1.1.1 | 
    
    
      | 
        This object indicates the type of an optical interface, when
        the type is not specified in the ifType object in the IF-MIB,
        i.e., when the ifType object is set to 'other'.
        The value 'opticalTransponder' represents an optoelectronic
        interface that relays signals of various physical layer
        protocols.  The interface may be capable of pulse shaping and
        retiming.  The interface may be capable of monitoring various
        physical layer protocols.  The interface may emit signals
        that are colored (e.g. one channel in a DWDM system) or
        uncolored (i.e., for single channel interfaces).
        The value 'wdmTransport' indicates an optical interface that
        carries multiple wavelengths.
        The value 'wdmChannel' indicates an interface sub-layer above
        'wdmTransport' representing a single wavelength.
        The value 'wdmChannelGroup' indicates an interface sub-layer
        above 'wdmTransport' representing a wavelength division
        multiplexed group of wavelengths.
        The value 'wavelengthTransport' indicates an optical interface
        that carries a single wavelength.
        The value 'ethernetPhy' indicates an interface that implements
        the physical layer of the Ethernet protocol.
        The value 'esconPhy' indicates an interface that implements the
        physical layer of ESCON.
        The value 'gigabitPhy' indicates an interface that supports the
        physical layers of both Gigabit Ethernet and Fibre Channel.
       | 
    
    
      | coIfDwdmFrequency | 
      .1.3.6.1.4.1.9.10.66.1.2.1.1.1 | 
    
    
      | 
        The nominal central frequency associated with this interface,
        in GHz.
        This object is instantiated for interfaces with
        coIfTypeExtn value of 'wdmChannel' and
        'wavelengthTransport'.  This object may also be instantiated
        for optoelectronic interfaces that originate or terminate
        DWDM wavelengths, including some of the interfaces with
        coIfTypeExtn value of 'opticalTransponder'.
       | 
    
    
      | coIfDwdmChannelGroupMinFrequency | 
      .1.3.6.1.4.1.9.10.66.1.3.3.1.1 | 
    
    
      | 
        The lowest frequency represented in the bitmap specified in
        coIfDwdmChannelGroupBitmap, i.e., the frequency represented by
        bit 0 of octet 1 of coIfDwdmChannelGroupBitmap.
       | 
    
    
      | coIfDwdmChannelGroupSpacing | 
      .1.3.6.1.4.1.9.10.66.1.3.3.1.2 | 
    
    
      | 
        The difference in frequency between successive bits in
        coIfDwdmChannelGroupBitmap.  This is typically the frequency
        difference between adjacent channels in the DWDM system.
       | 
    
    
      | coIfDwdmChannelGroupBitmapLogic | 
      .1.3.6.1.4.1.9.10.66.1.3.3.1.3 | 
    
    
      | 
        This object indicates whether coIfDwdmChannelGroupBitmap
        identifies channels included in the channel group, or whether
        it identifies channels excluded from the channel group.
        When the value of this object is 'carried', then the channel
        group is composed only of those channels for which the value of
        the corresponding bit in coIfDwdmChannelBitmap is one.
        When the value of this object is 'blocked', then the channel
        group is composed of all channels except those for which the
        value of the corresponding bit in coIfDwdmChannelBitmap is
        one.  Channels that are not identified in coIfDwdmChannelBitmap
        are included in the channel group.
       | 
    
    
      | coIfDwdmChannelGroupBitmap | 
      .1.3.6.1.4.1.9.10.66.1.3.3.1.4 | 
    
    
      | 
        The DWDM channel bitmap that indicates those channels that
        are included or excluded (depending on the value of
        coIfDwdmChannelBitmapLogic) from the DWDM channel group.
        If a frequency is included in a DWDM channel group, this does
        not necessarily indicate that there is a signal present at that
        frequency.  It indicates that if a signal is present at that
        frequency, then that signal is included in this DWDM channel
        group.
        Bit zero of octet one corresponds to the lowest channel
        (representing the frequency identified by
        coIfDwdmChannelGroupMinFrequency), bit one of octet one
        corresponds to the lowest plus one channel (representing
        the frequency obtained by adding the values of
        coIfDwdmChannelGroupMinFrequency and
        coIfDwdmChannelGroupSpacing), and so on.
        When the value of coIfDwdmChannelBitmapLogic is 'carried',
        then channels included in the channel group will have the
        corresponding bit set to one in the bitmap.  Bits that are set
        to zero represent channels that are excluded from the channel
        group.  Channels that are not represented in the bitmap are
        also excluded from the channel group.
        When the value of coIfDwdmChannelBitmapLogic is 'blocked',
        then channels excluded from the channel group will have the
        corresponding bit set to one in the bitmap.  Bits that are set
        to zero represent channels that are included in the channel
        group.  Channels that are not represented in the bitmap are
        also included in the channel group.
       | 
    
    
      | coIfXcvrLaserAdminStatus | 
      .1.3.6.1.4.1.9.10.66.1.4.1.1.1 | 
    
    
      | 
        The desired state of the laser on this interface.
        This object differs from ifAdminStatus in the IF-MIB, since
        in some cases setting ifAdminStatus to 'down' causes an alarm
        indication to be transmitted, rather than shutting down the
        laser.  When this object is set to 'down', ifOperStatus in the
        IF-MIB goes to the 'down' state, and the laser is shut down.
        In order to administratively enable an interface, both
        ifAdminStatus in the IF-MIB and this object must be set to
        'up'.
       | 
    
    
      | coIfXcvrLaserOperStatus | 
      .1.3.6.1.4.1.9.10.66.1.4.1.1.2 | 
    
    
      | 
        This object indicates the current operational status of the
        laser on this interface.
        'transmitting': The laser is on.
        'degraded': The laser is on, but there is a fault that causes
        it to transmit in a degraded manner.
        'down': The laser is shut down, either because of error
        conditions or because it has been administratively
        disabled.  This state indicates that the laser is shut down
        due to conditions other than Laser Safety Control or
        Forward Laser Control.
        'lscDown': The laser is shut down due to Laser Safety Control
        (LSC) mechanisms such as Automatic Laser Shutdown (ALS),
        i.e., due to a fault in the receive direction at this
        interface.
        'flcDown': The laser is shut down due to Forward Laser Control,
        i.e., due to a fault on the cross-connected interface.
        'unknown': The operational status of the laser cannot be
        determined.
        If the value of coIfXcvrLaserAdminStatus is 'down', then this
        object also indicates 'down'.  If coIfXcvrLaserAdminStatus is
        set to 'up', then the value of this object should change to
        'transmitting' if the laser is functioning properly.
       | 
    
    
      | coIfXcvrMinLaserFrequency | 
      .1.3.6.1.4.1.9.10.66.1.4.1.1.3 | 
    
    
      | 
        The lowest frequency represented in the bitmap specified in
        coIfXcvrLaserFrequencyBitmap, i.e., the frequency represented
        by bit 0 of octet 1 of coIfXcvrLaserFrequencyBitmap.
        A value of zero signifies that the laser on this interface is
        uncolored and that coIfXcvrLaserFrequencyBitmap does not
        apply.
       | 
    
    
      | coIfXcvrLaserFrequencySpacing | 
      .1.3.6.1.4.1.9.10.66.1.4.1.1.4 | 
    
    
      | 
        The difference in frequency between successive bits in
        coIfXcvrLaserFrequencyBitmap.  This is typically the frequency
        difference between adjacent channels in the DWDM system.
       | 
    
    
      | coIfXcvrLaserFrequencyBitmap | 
      .1.3.6.1.4.1.9.10.66.1.4.1.1.5 | 
    
    
      | 
        This bitmap indicates the DWDM channel frequencies supported
        by the tunable laser on this interface.
        Bit zero of octet one corresponds to the lowest channel
        (representing the frequency identified by
        coIfXcvrMinLaserFrequency), bit one of octet one corresponds
        to the lowest plus one channel (representing the frequency
        obtained by adding the values of coIfXcvrMinLaserFrequency
        and coIfXcvrMinLaserFrequencySpacing), and so on.
        The frequencies supported by the tunable laser have the
        corresponding bit set to one in the bitmap.  Bits that are set
        to zero represent frequencies that are not supported by the
        tunable laser.  The frequencies that are not represented in the
        bitmap are also not supported by the tunable laser.
       | 
    
    
      | coIfXcvrForwardLaserControl | 
      .1.3.6.1.4.1.9.10.66.1.4.1.1.6 | 
    
    
      | 
        This object is used to enable or disable Forward Laser Control
        (FLC) on this interface.  If Forward Laser Control is enabled,
        the laser is automatically shut down when the receive direction
        of the cross-connected interface is in an alarm condition.
       | 
    
    
      | coIfXcvrLaserSafetyControl | 
      .1.3.6.1.4.1.9.10.66.1.4.1.1.7 | 
    
    
      | 
        This object is used to enable or disable Laser Safety Control
        (LSC) mechanisms such as Automatic Laser Shutdown (ALS) on this
        interface.  Laser Safety Control mechanisms are used to
        automatically shutdown the output power of laser transmitters
        when potentially hazardous conditions such as fiber breaks or
        unplugged optical connectors are detected.
       | 
    
    
      | coIfXcvrLSCProtocol | 
      .1.3.6.1.4.1.9.10.66.1.4.1.1.8 | 
    
    
      | 
        This object identifies the Laser Safety Control protocol that
        is applied when coIfXcvrLaserSafetyControl is set to 'enable'.
        'proprietary': Indicates that the Laser Safety Control protocol
        is proprietary.
        'g664': Indicates the Automatic Laser Shutdown (ALS) protocol
        specified in ITU-T Recommendation G.664.
       | 
    
    
      | coIfXcvrLSCRestartMode | 
      .1.3.6.1.4.1.9.10.66.1.4.1.1.9 | 
    
    
      | 
        This object selects the mechanism used to restore transmission
        after the fiber has been repaired or reconnected.
        'automaticRestart': This mode selects automatic restart of the
        laser by periodically transmitting restart pulses.  The
        period between restart pulse transmissions is specified by
        coIfXcvrLSCPulseReptitionTime.
        'manualRestart': This mode selects manual restart of the laser.
        After the fiber has been repaired or reconnected, the
        coIfXcvrLSCManualRestart object should be used to trigger
        transmission of a restart pulse.
       | 
    
    
      | coIfXcvrLSCManualRestart | 
      .1.3.6.1.4.1.9.10.66.1.4.1.1.10 | 
    
    
      | 
        This object initiates laser activation when the laser is shut
        down due to Laser Safety Control.
        When the value is set to 'restart', transmission of a restart
        pulse of length coIfXcvrLSCPulseLength is triggered.
        When this object is set to 'restartForTest', transmission of a
        restart pulse of length coIfXcvrLSCTestPulseLength is
        triggered.  Before setting this object to 'restartForTest',
        specific care must be taken to assure connectivity to avoid
        exposure to hazardous optical levels.
        When the value is set to 'noop', no operation is performed.
        When read, the value 'noop' is returned.
        Manual restart can only be activated when the value of
        coIfXcvrLaserOperStatus is 'lscDown'.
       | 
    
    
      | coIfXcvrLSCPulseLength | 
      .1.3.6.1.4.1.9.10.66.1.4.1.1.11 | 
    
    
      | 
        This object specifies the length of restart pulses used to
        restore transmission when a Laser Safety Control protocol is
        activated.
       | 
    
    
      | coIfXcvrLSCTestPulseLength | 
      .1.3.6.1.4.1.9.10.66.1.4.1.1.12 | 
    
    
      | 
        This object specifies the length of test restart pulses that
        are transmitted when coIfXcvrLSCManualRestart is set to
        'restartForTest'.
       | 
    
    
      | coIfXcvrLSCPulseRepetitionTime | 
      .1.3.6.1.4.1.9.10.66.1.4.1.1.13 | 
    
    
      | 
        This object specifies the delay interval between transmissions
        of restart pulses, when coIfXcvrLSCRestartMode is set to
        'automaticRestart' and coIfXcvrLaserOperStatus indicates
        'lscDown'.
       |