rfc2127.txt

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-- the according ifStack entry has to be removed.
-- More specifically, the ifStackTable entry which binds the high-layer
-- ifTable entry (and related dialCtlNbrCfgTable entry) to the
-- B channel ifTable entry (and related isdnBearerTable entry)
-- during an active call has to be removed.

isdnBearerGroup OBJECT IDENTIFIER ::= { isdnMibObjects 2 }

isdnBearerTable OBJECT-TYPE
        SYNTAX      SEQUENCE OF IsdnBearerEntry
        MAX-ACCESS  not-accessible
        STATUS      current
        DESCRIPTION
            "This table defines port specific operational, statistics



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RFC 2127                        ISDN MIB                      March 1997


             and active call data for ISDN B channels. Each entry
             in this table describes one B (bearer) channel."
        ::= { isdnBearerGroup 1 }

isdnBearerEntry OBJECT-TYPE
        SYNTAX      IsdnBearerEntry
        MAX-ACCESS  not-accessible
        STATUS      current
        DESCRIPTION
            "Operational and statistics information relating to
             one port. A port is a single B channel."
        INDEX { ifIndex }
        ::= { isdnBearerTable 1 }

IsdnBearerEntry ::=
        SEQUENCE {
            isdnBearerChannelType           INTEGER,
            isdnBearerOperStatus            INTEGER,
            isdnBearerChannelNumber         INTEGER,
            isdnBearerPeerAddress           DisplayString,
            isdnBearerPeerSubAddress        DisplayString,
            isdnBearerCallOrigin            INTEGER,
            isdnBearerInfoType              INTEGER,
            isdnBearerMultirate             TruthValue,
            isdnBearerCallSetupTime         TimeStamp,
            isdnBearerCallConnectTime       TimeStamp,
            isdnBearerChargedUnits          Gauge32
        }

isdnBearerChannelType           OBJECT-TYPE
        SYNTAX INTEGER {
            dialup(1),
            leased(2)
        }
        MAX-ACCESS  read-write
        STATUS      current
        DESCRIPTION
            "The B channel type. If the B channel is connected
             to a dialup line, this object has a value of
             dialup(1). In this case, it is controlled by
             an associated signaling channel. If the B channel
             is connected to a leased line, this object has
             a value of leased(2). For leased line B channels, there
             is no signaling channel control available."
        ::= { isdnBearerEntry 1 }

isdnBearerOperStatus            OBJECT-TYPE
        SYNTAX INTEGER {



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RFC 2127                        ISDN MIB                      March 1997


            idle(1),
            connecting(2),
            connected(3),
            active(4)
        }
        MAX-ACCESS  read-only
        STATUS      current
        DESCRIPTION
            "The current call control state for this port.
             idle(1):       The B channel is idle.
                            No call or call attempt is going on.
             connecting(2): A connection attempt (outgoing call)
                            is being made on this interface.
             connected(3):  An incoming call is in the process
                            of validation.
             active(4):     A call is active on this interface."
        ::= { isdnBearerEntry 2 }

isdnBearerChannelNumber         OBJECT-TYPE
        SYNTAX INTEGER (1..30)
        MAX-ACCESS  read-only
        STATUS      current
        DESCRIPTION
            "The identifier being used by a signaling protocol
             to identify this B channel, also referred to as
             B channel number. If the Agent also supports the DS0 MIB,
             the values of isdnBearerChannelNumber and dsx0Ds0Number
             must be identical for a given B channel."
        ::= { isdnBearerEntry 3 }

isdnBearerPeerAddress           OBJECT-TYPE
        SYNTAX   DisplayString
        MAX-ACCESS   read-only
        STATUS   current
        DESCRIPTION
            "The ISDN address the current or last call is or was
             connected to.

             In some cases, the format of this information can not
             be predicted, since it largely depends on the type
             of switch or PBX the device is connected to. Therefore,
             the detailed format of this information is not
             specified and is implementation dependent.

             If possible, the agent should supply this information
             using the E.164 format. In this case, the number must
             start with '+'. Otherwise, IA5 number digits must be used.




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RFC 2127                        ISDN MIB                      March 1997


             If the peer ISDN address is not available,
             this object has a length of zero."
        REFERENCE
            "ITU-T E.164, Q.931 chapter 4.5.10"
        ::= { isdnBearerEntry 4 }

isdnBearerPeerSubAddress        OBJECT-TYPE
        SYNTAX   DisplayString
        MAX-ACCESS   read-only
        STATUS   current
        DESCRIPTION
            "The ISDN subaddress the current or last call is or was
             connected to.

             The subaddress is an user supplied string of up to 20
             IA5 characters and is transmitted transparently through
             the network.

             If the peer subaddress is not available, this object
             has a length of zero."
        REFERENCE
             "ITU-T I.330, Q.931 chapter 4.5.11"
        ::= { isdnBearerEntry 5 }

isdnBearerCallOrigin            OBJECT-TYPE
          SYNTAX   INTEGER {
            unknown(1),
            originate(2),
            answer(3),
            callback(4)
        }
        MAX-ACCESS   read-only
        STATUS   current
        DESCRIPTION
            "The call origin for the current or last call. If since
             system startup there was no call on this interface,
             this object has a value of unknown(1)."
        ::= { isdnBearerEntry 6 }

isdnBearerInfoType              OBJECT-TYPE
        SYNTAX      INTEGER {
            unknown(1),
            speech(2),
            unrestrictedDigital(3),       -- as defined in Q.931
            unrestrictedDigital56(4),     -- with 56k rate adaption
            restrictedDigital(5),
            audio31(6),                   -- 3.1 kHz audio
            audio7(7),                    -- 7 kHz audio



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RFC 2127                        ISDN MIB                      March 1997


            video(8),
            packetSwitched(9)
        }
        MAX-ACCESS  read-only
        STATUS      current
        DESCRIPTION
            "The Information Transfer Capability for the current
             or last call.

             speech(2) refers to a non-data connection, whereas
             audio31(6) and audio7(7) refer to data mode connections.

             Note that Q.931, chapter 4.5.5, originally defined
             audio7(7) as '7 kHz audio' and now defines it as
             'Unrestricted digital information with tones/
             announcements'.

             If since system startup there has been no call on this
             interface, this object has a value of unknown(1)."
        REFERENCE
            "Q.931 [8], chapter 4.5.5, octet 3 of bearer capability
             information element, combined with the User Rate
             (as defined in octets 5 and 5a to 5d), if rate adaption
             is being used."
        ::= { isdnBearerEntry 7 }

isdnBearerMultirate             OBJECT-TYPE
        SYNTAX      TruthValue
        MAX-ACCESS  read-only
        STATUS      current
        DESCRIPTION
            "This flag indicates if the current or last call used
             multirate. The actual information transfer rate,
             in detail specified in octet 4.1 (rate multiplier),
             is the sum of all B channel ifSpeed values for
             the hyperchannel.

             If since system startup there was no call on this
             interface, this object has a value of false(2)."
        REFERENCE
            "Q.931 [8], chapter 4.5.5."
        ::= { isdnBearerEntry 8 }

isdnBearerCallSetupTime         OBJECT-TYPE
        SYNTAX      TimeStamp
        MAX-ACCESS  read-only
        STATUS      current
        DESCRIPTION



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RFC 2127                        ISDN MIB                      March 1997


            "The value of sysUpTime when the ISDN setup message for
             the current or last call was sent or received. If since
             system startup there has been no call on this interface,
             this object has a value of zero."
        ::= { isdnBearerEntry 9 }

isdnBearerCallConnectTime       OBJECT-TYPE
        SYNTAX      TimeStamp
        MAX-ACCESS  read-only
        STATUS      current
        DESCRIPTION
            "The value of sysUpTime when the ISDN connect message for
             the current or last call was sent or received. If since
             system startup there has been no call on this interface,
             this object has a value of zero."
        ::= { isdnBearerEntry 10 }

isdnBearerChargedUnits          OBJECT-TYPE
        SYNTAX      Gauge32
        MAX-ACCESS  read-only
        STATUS      current
        DESCRIPTION
            "The number of charged units for the current or last
             connection. For incoming calls or if charging information
             is not supplied by the switch, the value of this object
             is zero."
        ::= { isdnBearerEntry 11 }

-- ISDN signaling group

isdnSignalingGroup OBJECT IDENTIFIER ::= { isdnMibObjects 3 }

-- signaling channel configuration table
-- There is one entry in this table for each Terminal Endpoint
-- (link layer connection to the switch).
-- Usually, there is one endpoint per D channel. In some
-- cases, however, there can be multiple endpoints.
-- Thus, entries in this table can be created and deleted.
-- This also means the creation of an associated ifEntry.
--
-- D channel backup and NFAS trunks are handled using the
-- ifStack table.
-- In case of D channel backup, there are multiple
-- Data Link Layer (LAPD) interfaces. Only one interface is
-- active; all others are dormant(5).
-- In case of NFAS trunks, one lower interface is the
-- LAPD interface, while the other lower interfaces are physical
-- interfaces.



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RFC 2127                        ISDN MIB                      March 1997


-- If directory number and calling address differ from each other
-- or multiple directory numbers are being used,
-- the isdnDirectoryTable has to be used to enter such
-- directory numbers.

isdnSignalingGetIndex OBJECT-TYPE
        SYNTAX      TestAndIncr
        MAX-ACCESS  read-write
        STATUS      current
        DESCRIPTION
            "The recommended procedure for selecting a new index for
             isdnSignalingTable row creation is to GET the value of
             this object, and then to SET the object with the same
             value. If the SET operation succeeds, the manager can use
             this value as an index to create a new row in this table."
        REFERENCE
            "RFC1903, TestAndIncr textual convention."
        ::= { isdnSignalingGroup 1 }

isdnSignalingTable OBJECT-TYPE
        SYNTAX      SEQUENCE OF IsdnSignalingEntry
        MAX-ACCESS  not-accessible
        STATUS      current
        DESCRIPTION
            "ISDN signaling table containing configuration and
             operational parameters for all ISDN signaling
             channels on this managed device."
        ::= { isdnSignalingGroup 2 }

isdnSignalingEntry OBJECT-TYPE
        SYNTAX      IsdnSignalingEntry
        MAX-ACCESS  not-accessible
        STATUS      current
        DESCRIPTION
            "An entry in the ISDN Signaling Table. To create a new
             entry, only isdnSignalingProtocol needs to be specified
             before isdnSignalingStatus can become active(1)."
        INDEX { isdnSignalingIndex }
        ::= { isdnSignalingTable 1 }

IsdnSignalingEntry ::= SEQUENCE {
            isdnSignalingIndex          INTEGER,