RFC1232-MIB DEFINITIONS ::= BEGIN


          IMPORTS
                  experimental, Counter
                          FROM RFC1155-SMI
                  DisplayString
                          FROM RFC1158-MIB
                  OBJECT-TYPE
                          FROM RFC-1212;

          --  This MIB module uses the extended OBJECT-TYPE macro as
          --  defined in [13].


          --  this is the MIB module for ds1 objects

          ds1 OBJECT IDENTIFIER ::= { experimental 2 }

          -- the DS1 Configuration group






          -- Although the objects in this group are read-only, at the
          -- agent's discretion they may be made read-write so that the
          -- management station, when appropriately authorized, may
          -- change the behavior of the CSU, e.g., to place the device
          -- into a loopback state or emit a QRSS BER test.

          -- Implementation of this group is mandatory for all systems
          -- that attach to a ds1.

          ds1ConfigTable OBJECT-TYPE
              SYNTAX  SEQUENCE OF DS1ConfigEntry
              ACCESS  not-accessible
              STATUS  mandatory
              DESCRIPTION
                      "The DS1 Configuration table."
              ::= { ds1 1 }

          ds1ConfigEntry OBJECT-TYPE
              SYNTAX  DS1ConfigEntry
              ACCESS  not-accessible
              STATUS  mandatory
              DESCRIPTION
                      "An entry in the DS1 Configuration table."
              INDEX   { ds1CSUIndex }
              ::= { ds1ConfigTable 1 }

          DS1ConfigEntry ::=
              SEQUENCE {
                  ds1CSUIndex
                      INTEGER,
                  ds1Index
                      INTEGER,
                  ds1TimeElapsed
                      INTEGER (1..900),
                  ds1ValidIntervals
                      INTEGER (0..96),
                  ds1LineType
                      INTEGER,
                  ds1ZeroCoding
                      INTEGER,
                  ds1Loopback
                      INTEGER,
                  ds1SendCode
                      INTEGER,
                  ds1YellowAlarm
                      INTEGER,
                  ds1RedAlarm
                      INTEGER,





                  ds1CircuitIdentifier
                      DisplayString (SIZE (0..255))
          }

          ds1CSUIndex OBJECT-TYPE
              SYNTAX  INTEGER
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The index value which uniquely identifies the CSU
                      to which this entry is applicable."
              ::= { ds1ConfigEntry 1 }

          ds1Index OBJECT-TYPE
              SYNTAX  INTEGER
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "An index value that uniquely identifies an
                      interface to a ds1.  The interface identified by a
                      particular value of this index is the same
                      interface as identified by the same value an
                      ifIndex object instance."
              ::= { ds1ConfigEntry 2 }

          ds1TimeElapsed OBJECT-TYPE
              SYNTAX  INTEGER (1..900)
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of seconds that have elapsed since the
                      beginning of the current error-measurement period.
                      Any fraction is rounded up."
              ::= { ds1ConfigEntry 3 }

          ds1ValidIntervals OBJECT-TYPE
              SYNTAX  INTEGER (0..96)
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The number of previous intervals for which valid
                      data was collected.  The value will be 96 unless
                      the CSU device was brought online within the last
                      24 hours, in which case the value will be the
                      number of complete 15 minute intervals the CSU has
                      been online."
              ::= { ds1ConfigEntry 4 }






          ds1LineType OBJECT-TYPE
              SYNTAX  INTEGER {
                          other(1),
                          ds1ESF(2),
                          ds1D4(3),
                          ds1ANSI-ESF(4),
                          ds1G704(5),
                          ds1G704-CRC(6)
                      }
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "This variable indicates the variety of DS1 Line
                      implementing this circuit.  The type of circuit
                      affects the number of bits per second that the
                      circuit can reasonably carry, as well as the
                      interpretation of the usage and error statistics.

                      The values, in sequence, describe:
                      TITLE:       SPECIFICATION:
                      ds1ESF        AT&T Extended SuperFrame DS1 [10]
                      ds1D4         AT&T D4 format DS1 [16], [17]
                      ds1ANSI-ESF   ANSI Extended SuperFrame format [14]
                      ds1G704       CCITT Recommendation G.704 [12]
                                      (section 2.1.3.2)
                      ds1G704-CRC   CCITT Recommendation G.704 [12]
                                      (section 2.1.3.1)
                      "
              ::= { ds1ConfigEntry 5 }

          ds1ZeroCoding OBJECT-TYPE
              SYNTAX  INTEGER {
                          ds1JammedBit(1),
                          ds1B8ZS(2),
                          ds1InvertedHDLC(3),
                          ds1HDB3(4),
                          ds1ZBTSI(5)
                      }
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "This variable describes the variety of Zero Code
                      Suppression used on the link, which in turn
                      affects a number of its characteristics.

                      ds1JammedBit refers the Jammed bit Zero Encoding,
                      in which the AT&T specification of at least one
                      pulse every 8 bit periods is literally implemented





                      by forcing a pulse in bit 8 of each channel.
                      Thus, only seven bits per channel, or 1.344 Mbps,
                      is available for data.

                      ds1B8ZS refers to the use of a specified pattern
                      of normal bits and bipolar violations which are
                      used to replace a sequence of eight zero bits (see
                      [14]).  In this context, all eight bits in a
                      channel are technically available for data, but
                      care must be taken with D4 encoded data to avoid
                      having HDLC Flag streams imitate spurious Yellow
                      Alarm conditions.  Typically, one bit per frame is
                      ignored to force flag streams to rotate, thereby
                      avoiding this error type.  CCITT Recommendation
                      G.703 [11] may be referred to for further
                      definition of these.

                      ds1InvertedHDLC refers to the practice, common on
                      HDLC encoded DS1 data links, of inverting the data
                      between the serial interface chip and the CSU.
                      Since HDLC guarantees one zero every 6 bits in the
                      worst case, while the standards call for (in
                      effect) at least one pulse every eight, inverted
                      HDLC enjoys 4/24 one's density on the line, which
                      may improve the effective clock stability of a DS1
                      line.  As with B8ZS, all eight bits in a channel
                      are technically available for data, but care must
                      be taken with D4 encoded data to avoid having HDLC
                      Flag streams imitate spurious Yellow Alarm
                      conditions.  Typically, one bit per frame is
                      ignored to force flag streams to rotate, thereby
                      avoiding this error type.

                      ANSI Clear Channels may use ds1ZBTSI, or Zero Byte
                      Time Slot Interchange (see [14]).

                      G.704 links, with or without CRC, use ds1HDB3 (see
                      [11]).  "
              ::= { ds1ConfigEntry 6 }

          ds1Loopback OBJECT-TYPE
              SYNTAX  INTEGER {
                          ds1NoLoop(1),
                          ds1LocalLoopbackLocalSide(2),
                          ds1LocalLoopbackRemoteSide(3),
                          ds1RemoteLoopbackLocalSide(4),
                          ds1RemoteLoopbackRemoteSide(5)
                      }





              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "This variable represents the loopback state of
                      the CSU.  Devices supporting read/write access
                      should return badValue in response to a requested
                      loopback state that the CSU does not support.  The
                      values mean:

                      ds1NoLoop

                         Not in the loopback state.  A device that is
                         not capable of performing a loopback on either
                         interface shall always return this as it's
                         value.

                      ds1LocalLoopbackLocalSide

                         Signal received from the local side of the
                         device is looped back at the local connector
                         (eg, without involving the CSU).

                      ds1LocalLoopbackRemoteSide

                         Signal received from the local side of the
                         device is looped back at the remote connector
                         (eg, through the CSU).

                      ds1RemoteLoopbackLocalSide

                         Signal received from the remote side of the
                         device is looped back at the local connector
                         (eg, through the CSU).

                      ds1RemoteLoopbackRemoteSide

                         Signal received from the remote side of the
                         device is looped back at the remote connector
                         (eg, without involving the CSU)."
              ::= { ds1ConfigEntry 7 }

          ds1SendCode OBJECT-TYPE
              SYNTAX  INTEGER {
                          ds1OtherTest(1),
                          ds1SendNoCode(2),
                          ds1SendSetCode(3),
                          ds1SendResetCode(4),
                          ds1SendQRSS(5)





                      }
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                 "This variable indicates what type of code is
                 being sent across the DS1 circuit by the CSU.  The
                 values mean:

                 ds1SendNoCode    sending looped or normal data
                 ds1SendSetCode   sending a loopback request
                 ds1SendResetCode sending a loopback termination request
                 ds1SendQRSS      sending the BERT pattern described in
                                  ANSI T1.403-1989 section 5.6
                 ds1OtherTest     sending a different BERT/BLERT pattern,
                                  such as all zeroes, all ones, etc."
              ::= { ds1ConfigEntry 8 }

          ds1YellowAlarm OBJECT-TYPE
              SYNTAX  INTEGER {
                          ds1NoYellowAlarm (1),
                          ds1YellowAlarm (2)
                      }
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "This variable indicates if a Yellow Alarm
                      condition exists.

                      Note that G.704 interfaces do not support Yellow
                      Alarms.  Accordingly, such agents should return
                      the value ds1NoYellowAlarm."
              ::= { ds1ConfigEntry 9 }

          ds1RedAlarm OBJECT-TYPE
              SYNTAX  INTEGER {
                          ds1NoRedAlarm (1),
                          ds1RedAlarm (2)
                      }
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "This variable indicates if a Red Alarm condition
                      exists.

                      Note that G.704 interfaces do not support Red
                      Alarms.  Accordingly, such agents should return
                      the value ds1NoRedAlarm."
              ::= { ds1ConfigEntry 10 }





          ds1CircuitIdentifier OBJECT-TYPE
              SYNTAX  DisplayString (SIZE (0..255))
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "This variable contains the transmission vendor's
                      circuit identifier, for the purpose of
                      facilitating troubleshooting."
              ::= { ds1ConfigEntry 11 }


          -- the DS1 Interval group

          -- Implementation of this group is mandatory for all systems
          -- that attach to a ds1.

          -- It is recognized that some currently deployed CSUs do not
          -- record the entire set of statistics specified in this
          -- group.  Accordingly, some agents queried for these objects
          -- may treat these objects as having an ACCESS clause value
          -- of not-accessible.

          -- The DS1 Interval Table contains various statistics
          -- collected by each CSU over the previous 24 hours of
          -- operation.  The past 24 hours are broken into 96 completed
          -- 15 minute intervals.

          ds1IntervalTable OBJECT-TYPE
              SYNTAX  SEQUENCE OF DS1IntervalEntry
              ACCESS  not-accessible
              STATUS  mandatory
              DESCRIPTION
                      "The DS1 Interval table."
              ::= { ds1 2 }

          ds1IntervalEntry OBJECT-TYPE
              SYNTAX  DS1IntervalEntry
              ACCESS  not-accessible
              STATUS  mandatory
              DESCRIPTION
                      "An entry in the DS1 Interval table."
              INDEX   { ds1IntervalIndex, ds1IntervalNumber }
              ::= { ds1IntervalTable 1 }

          DS1IntervalEntry ::=
              SEQUENCE {
                  ds1IntervalIndex
                      INTEGER,





                  ds1IntervalNumber
                      INTEGER (1..96),
                  ds1IntervalESs
                      Counter,
                  ds1IntervalSESs
                      Counter,
                  ds1IntervalSEFSs
                      Counter,
                  ds1IntervalUASs
                      Counter,
                  ds1IntervalCSSs
                      Counter,
                  ds1IntervalBPVs
                      Counter,
                  ds1IntervalCVs
                      Counter
              }

          ds1IntervalIndex OBJECT-TYPE
              SYNTAX  INTEGER
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The index value which uniquely identifies the CSU
                      to which this entry is applicable.  The interface
                      identified by a particular value of this index is
                      the same interface as identified by the same value
                      an ds1CSUIndex object instance."
              ::= { ds1IntervalEntry 1 }

          ds1IntervalNumber OBJECT-TYPE
              SYNTAX  INTEGER (1..96)
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "A number between 1 and 96, where 1 is the most
                      recently completed 15 minute interval and 96 is
                      the least recently completed 15 minute interval
                      (assuming that all 96 intervals are valid)."
              ::= { ds1IntervalEntry 2 }

          ds1IntervalESs OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The counter associated with the number of Errored
                      Seconds, as defined by ANSI Draft Standard





                      T1M1.3/90 - 027R2[15], encountered by a DS1 CSU
                      during one of the previous 96 fifteen minute
                      intervals."
              ::= { ds1IntervalEntry 3 }

          ds1IntervalSESs OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The counter associated with the number of
                      Severely Errored Seconds, as defined by ANSI Draft
                      Standard T1M1.3/90 - 027R2[15], encountered by a
                      DS1 CSU during one of the previous 96 fifteen
                      minute intervals."
              ::= { ds1IntervalEntry 4 }

          ds1IntervalSEFSs OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The counter associated with the number of
                      Severely Errored Framing Seconds, as defined by
                      ANSI Draft Standard T1M1.3/90 - 027R2[15],
                      encountered by a DS1 CSU during one of the
                      previous 96 fifteen minute intervals."
              ::= { ds1IntervalEntry 5 }

          ds1IntervalUASs OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The counter associated with the number of
                      Unavailable Seconds, as defined by ANSI Draft
                      Standard T1M1.3/90 - 027R2[15], encountered by a
                      DS1 CSU during one of the previous 96 fifteen
                      minute intervals."
              ::= { ds1IntervalEntry 6 }

          ds1IntervalCSSs OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The counter associated with the number of
                      Controlled Slip Seconds, as defined by ANSI Draft





                      Standard T1M1.3/90 - 027R2[15], encountered by a
                      DS1 CSU during one of the previous 96 fifteen
                      minute intervals."
              ::= { ds1IntervalEntry 7 }

          ds1IntervalBPVs OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The counter associated with the number of Bipolar
                      Violations, as defined by ANSI Draft Standard
                      T1M1.3/90 - 027R2[15], encountered by a DS1 CSU
                      during one of the previous 96 fifteen minute
                      intervals."
              ::= { ds1IntervalEntry 8 }

          ds1IntervalCVs OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The counter associated with the number of Code
                      Violation Error Events, as defined by ANSI Draft
                      Standard T1M1.3/90 - 027R2[15], encountered by a
                      DS1 CSU during one of the previous 96 fifteen
                      minute intervals.

                      Note that D4 and G.704 (section 2.1.3.2)
                      interfaces do not support Code Violation Error
                      Events.  Accordingly, such agents may treat this
                      object as having an ACCESS clause value of not-
                      accessible."
              ::= { ds1IntervalEntry 9 }


          -- the DS1 Current group

          -- Implementation of this group is mandatory for all systems
          -- that attach to a ds1.

          -- It is recognized that some currently deployed CSUs do not
          -- record the entire set of statistics specified in this
          -- group.  Accordingly, some agents queried for these objects
          -- may treat these objects as having an ACCESS clause value
          -- of not-accessible.

          -- The DS1 current table contains various statistics being





          -- collected for the current 15 minute interval.

          ds1CurrentTable OBJECT-TYPE
              SYNTAX  SEQUENCE OF DS1CurrentEntry
              ACCESS  not-accessible
              STATUS  mandatory
              DESCRIPTION
                      "The DS1 Current table."
              ::= { ds1 3 }

          ds1CurrentEntry OBJECT-TYPE
              SYNTAX  DS1CurrentEntry
              ACCESS  not-accessible
              STATUS  mandatory
              DESCRIPTION
                      "An entry in the DS1 Current table."
              INDEX   { ds1CurrentIndex }
              ::= { ds1CurrentTable 1 }

          DS1CurrentEntry ::=
              SEQUENCE {
                  ds1CurrentIndex
                      INTEGER,
                  ds1CurrentESs
                      Counter,
                  ds1CurrentSESs
                      Counter,
                  ds1CurrentSEFSs
                      Counter,
                  ds1CurrentUASs
                      Counter,
                  ds1CurrentCSSs
                      Counter,
                  ds1CurrentBPVs
                      Counter,
                  ds1CurrentCVs
                      Counter
              }

          ds1CurrentIndex OBJECT-TYPE
              SYNTAX  INTEGER
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The index value which uniquely identifies the CSU
                      to which this entry is applicable.  The interface
                      identified by a particular value of this index is
                      the same interface as identified by the same value





                      an ds1CSUIndex object instance."
              ::= { ds1CurrentEntry 1 }

          ds1CurrentESs OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The counter associated with the number of Errored
                      Seconds, as defined by ANSI Draft Standard
                      T1M1.3/90 - 027R2[15], encountered by a DS1 CSU in
                      the current 15 minute interval."
              ::= { ds1CurrentEntry 2 }

          ds1CurrentSESs OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The counter associated with the number of
                      Severely Errored Seconds, as defined by ANSI Draft
                      Standard T1M1.3/90 - 027R2[15], encountered by a
                      DS1 CSU in the current 15 minute interval."
              ::= { ds1CurrentEntry 3 }

          ds1CurrentSEFSs OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The counter associated with the number of
                      Severely Errored Framing Seconds, as defined by
                      ANSI Draft Standard T1M1.3/90 - 027R2[15],
                      encountered by a DS1 CSU in the current 15 minute
                      interval."
              ::= { ds1CurrentEntry 4 }

          ds1CurrentUASs OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The counter associated with the number of
                      Unavailable Seconds, as defined by ANSI Draft
                      Standard T1M1.3/90 - 027R2[15], encountered by a
                      DS1 CSU in the current 15 minute interval."
              ::= { ds1CurrentEntry 5 }






          ds1CurrentCSSs OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The counter associated with the number of
                      Controlled Slip Seconds, as defined by ANSI Draft
                      Standard T1M1.3/90 - 027R2[15], encountered by a
                      DS1 CSU in the current 15 minute interval."
              ::= { ds1CurrentEntry 6 }

          ds1CurrentBPVs OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The counter associated with the number of Bipolar
                      Violations, as defined by ANSI Draft Standard
                      T1M1.3/90 - 027R2[15], encountered by a DS1 CSU in
                      the current 15 minute interval."
              ::= { ds1CurrentEntry 7 }

          ds1CurrentCVs OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The counter associated with the number of Code
                      Violation Error Events, as defined by ANSI Draft
                      Standard T1M1.3/90 - 027R2[15], encountered by a
                      DS1 CSU in the current 15 minute interval.

                      Note that D4 and G.704 (section 2.1.3.2)
                      interfaces do not support Code Violation Error
                      Events.  Accordingly, such agents may treat this
                      object as having an ACCESS clause value of not-
                      accessible."
              ::= { ds1CurrentEntry 8 }


          -- the DS1 Total group

          -- Implementation of this group is mandatory for all systems
          -- that attach to a ds1.

          -- It is recognized that some currently deployed CSUs do not
          -- record the entire set of statistics specified in this
          -- group.  Accordingly, some agents queried for these objects





          -- may treat these objects as having an ACCESS clause value
          -- of not-accessible.

          -- The DS1 Total Table contains the cumulative sum of the
          -- various statistics for the 24 hour interval preceding the
          -- first valid interval in the ds1CurrentTable.

          ds1TotalTable OBJECT-TYPE
              SYNTAX  SEQUENCE OF DS1TotalEntry
              ACCESS  not-accessible
              STATUS  mandatory
              DESCRIPTION
                      "The DS1 Total table.  24 hour interval."
              ::= { ds1 4 }

          ds1TotalEntry OBJECT-TYPE
              SYNTAX  DS1TotalEntry
              ACCESS  not-accessible
              STATUS  mandatory
              DESCRIPTION
                      "An entry in the DS1 Total table."
              INDEX   { ds1TotalIndex }
              ::= { ds1TotalTable 1 }

          DS1TotalEntry ::=
              SEQUENCE {
                  ds1TotalIndex
                      INTEGER,
                  ds1TotalESs
                      Counter,
                  ds1TotalSESs
                      Counter,
                  ds1TotalSEFSs
                      Counter,
                  ds1TotalUASs
                      Counter,
                  ds1TotalCSSs
                      Counter,
                  ds1TotalBPVs
                      Counter,
                  ds1TotalCVs
                      Counter
              }

          ds1TotalIndex OBJECT-TYPE
              SYNTAX  INTEGER
              ACCESS  read-only
              STATUS  mandatory





              DESCRIPTION
                      "The index value which uniquely identifies the CSU
                      to which this entry is applicable.  The interface
                      identified by a particular value of this index is
                      the same interface as identified by the same value
                      an ds1CSUIndex object instance."
              ::= { ds1TotalEntry 1 }

          ds1TotalESs OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The counter associated with the number of Errored
                      Seconds, as defined by ANSI Draft Standard
                      T1M1.3/90 - 027R2[15], encountered by a DS1 CSU in
                      the previous 24 hour interval"
              ::= { ds1TotalEntry 2 }

          ds1TotalSESs OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The counter associated with the number of
                      Severely Errored Seconds, as defined by ANSI Draft
                      Standard T1M1.3/90 - 027R2[15], encountered by a
                      DS1 CSU in the previous 24 hour interval."
              ::= { ds1TotalEntry 3 }

          ds1TotalSEFSs OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The counter associated with the number of
                      Severely Errored Framing Seconds, as defined by
                      ANSI Draft Standard T1M1.3/90 - 027R2[15],
                      encountered by a DS1 CSU in the previous 24 hour
                      interval."
              ::= { ds1TotalEntry 4 }

          ds1TotalUASs OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The counter associated with the number of





                      Unavailable Seconds, as defined by ANSI Draft
                      Standard T1M1.3/90 - 027R2[15], encountered by a
                      DS1 CSU in the previous 24 hour interval."
              ::= { ds1TotalEntry 5 }

          ds1TotalCSSs OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The counter associated with the number of
                      Controlled Slip Seconds, as defined by ANSI Draft
                      Standard T1M1.3/90 - 027R2[15], encountered by a
                      DS1 CSU in the previous 24 hour interval."
              ::= { ds1TotalEntry 6 }

          ds1TotalBPVs OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The counter associated with the number of Bipolar
                      Violations, as defined by ANSI Draft Standard
                      T1M1.3/90 - 027R2[15], encountered by a DS1 CSU in
                      the previous 24 hour interval."
              ::= { ds1TotalEntry 7 }

          ds1TotalCVs OBJECT-TYPE
              SYNTAX  Counter
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The counter associated with the number of Code
                      Violation Error Events, as defined by ANSI Draft
                      Standard T1M1.3/90 - 027R2[15], encountered by a
                      DS1 CSU in the previous 24 hour interval.

                      Note that D4 and G.704 (section 2.1.3.2)
                      interfaces do not support Code Violation Error
                      Events.  Accordingly, such agents may treat this
                      object as having an ACCESS clause value of not-
                      accessible."
              ::= { ds1TotalEntry 8 }


          -- the DS1 Fractional group

          -- Implementation of this group is mandatory for those





          -- systems utilizing a fractional DS1 capability


          -- The DS1 fractional table contains identifies which DS1
          -- channels associated with a CSU are being used to support a
          -- logical interface, i.e., an entry in the interfaces table
          -- from the Internet-standard MIB.  For Clear Channel
          -- implementations, exactly one ifTable entry corresponds to
          -- the CSU being managed.  In this very typical case, the
          -- variable ds1Index indicates the value of ifIndex which
          -- corresponds to the interface being supported by a
          -- particular CSU.

          -- However, for fractional DS1 implementations, the
          -- correspondent value of ds1Index is 0, and for each DS1
          -- channel supporting a logical interface, there is an entry
          -- in the DS1 fractional table which names a value for
          -- ifIndex.
          --
          --      For ds1ESF, ds1D4, and ds1ANSI-ESF, there are 24 legal
          --      channels, numbered 1 through 24.
          --
          --      For G.704, there are 32 legal channels, numbered 1
          --      through 32.  ds1G704 can carry user data in channels 2
          --      through 32, channel 1 being an overhead channel.
          --      ds1G704-CRC can carry user data in channels 2 through
          --      16 and 18 through 32, channels 1 and 17 being overhead
          --      channels.

          ds1FracTable OBJECT-TYPE
              SYNTAX  SEQUENCE OF DS1FracEntry
              ACCESS  not-accessible
              STATUS  mandatory
              DESCRIPTION
                      "The DS1 Fractional table."
              ::= { ds1 5 }

          ds1FracEntry OBJECT-TYPE
              SYNTAX  DS1FracEntry
              ACCESS  not-accessible
              STATUS  mandatory
              DESCRIPTION
                      "An entry in the DS1 Fractional table."
              INDEX   { ds1FracIndex, ds1FracNumber }
              ::= { ds1FracTable 1 }

          DS1FracEntry ::=
              SEQUENCE {





                  ds1FracIndex
                      INTEGER,
                  ds1FracNumber
                      INTEGER (1..32),
                  ds1FracIfIndex
                      INTEGER
              }

          ds1FracIndex OBJECT-TYPE
              SYNTAX  INTEGER
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The index value which uniquely identifies the CSU
                      to which this entry is applicable.  The interface
                      identified by a particular value of this index is
                      the same interface as identified by the same value
                      an ds1CSUIndex object instance."
              ::= { ds1FracEntry 1 }

          ds1FracNumber OBJECT-TYPE
              SYNTAX  INTEGER (1..32)
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The channel number for this entry."
              ::= { ds1FracEntry 2 }

          ds1FracIfIndex OBJECT-TYPE
              SYNTAX  INTEGER
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "An index value that uniquely identifies an
                      interface to a ds1.  The interface identified by a
                      particular value of this index is the same
                      interface as identified by the same value an
                      ifIndex object instance."
              ::= { ds1FracEntry 3 }

          END











