rfc2127.txt

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   o    The call can also be identified and attached to a router port
        using the ISDN Called Address.  In this case, a distinct ISDN
        address or subaddress must be specified for each of the router
        ports.  This can be accomplished in the ISDN MIB by creating a
        isdnSignalingTable entry for each of the router ports, and by
        connecting Dial Control MIB peer entries to the thereby created
        interface using the dialCtlPeerCfgLowerIf object of
        dialCtlPeerCfgTable.

        If this type of router port identification is used in an
        implementation, it is up to the implementor to decide if there
        should be distinct TEI values assigned for each of the
        isdnSignalingTable entries.  For this reason, the
        isdnEndpointTable permits specifying the same TEI value in
        multiple entries.  It is recommended to use dynamic TEI
        assignment whenever possible.

        The implementor should be aware that this type of configuration
        requires a lot of configuration work for the customer, since an
        entry in isdnSignalingTable must be created for each of the
        router ports.

   o    Incoming calls can also be identified and attached to router
        ports using a higher layer functionality, such as PPP
        authentication.  Defining this functionality is outside the
        scope of this document.

3.4.10.  Usage of isdnMibDirectoryGroup and isdnDirectoryTable

   In some switch protocol or PBX implementations, the Called Number
   Information Element on incoming calls can differ from the Calling
   Number on outgoing calls.  Sometimes, the Called Number can be
   different for incoming Local Calls, Long Distance Calls and
   International Calls.  For Hunt Groups, the Called Number can be any
   of the numbers in the Hunt Group.

   The isdnDirectoryTable can be used to specify all these numbers.

   Entries in the isdnDirectoryTable are always connected to specific
   isdnSignalingTable entries.  No ifEntry is created for
   isdnDirectoryTable entries.  Therefore, the isdnDirectoryTable can
   not be used to attach incoming calls to router ports.  For router
   port identification, isdnSignalingTable entries should be created
   instead.







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RFC 2127                        ISDN MIB                      March 1997


4.  Definitions

ISDN-MIB DEFINITIONS ::= BEGIN

IMPORTS
        MODULE-IDENTITY,
        NOTIFICATION-TYPE,
        OBJECT-TYPE,
        Counter32,
        Gauge32,
        Integer32
                FROM SNMPv2-SMI
        DisplayString,
        TruthValue,
        TimeStamp,
        RowStatus,
        TestAndIncr,
        TEXTUAL-CONVENTION
                 FROM SNMPv2-TC
        MODULE-COMPLIANCE,
        OBJECT-GROUP,
        NOTIFICATION-GROUP
                FROM SNMPv2-CONF
        ifIndex,
        InterfaceIndex
                FROM IF-MIB
        IANAifType
                FROM IANAifType-MIB
        transmission
                FROM RFC1213-MIB;

isdnMib MODULE-IDENTITY
        LAST-UPDATED    "9609231642Z" -- Sep 23, 1996
        ORGANIZATION    "IETF ISDN MIB Working Group"
        CONTACT-INFO
            "        Guenter Roeck
             Postal: cisco Systems
                     170 West Tasman Drive
                     San Jose, CA 95134
                     U.S.A.
             Phone:  [phone]
             E-mail: [e-mail]"
        DESCRIPTION
            "The MIB module to describe the
             management of ISDN interfaces."
        ::= { transmission 20 }

-- The ISDN hardware interface (BRI or PRI) is represented



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RFC 2127                        ISDN MIB                      March 1997


-- by a media specific ifEntry.
--
-- For basic rate lines, the media specifics for the physical interface
-- is defined in the physical interface group of the ISDN MIB.
-- The ifType for physical basic rate interfaces is isdns(75)
-- or isdnu(76), whichever is appropriate.
--
-- For primary rate, the media specifics are defined in the Trunk
-- MIB and the ifType has a value of ds1(18).

-- Each signaling channel is represented by an entry
-- in the isdnSignalingTable.
-- The signaling channel has an ifType value of isdn(63).
-- Each B channel is also represented as an entry
-- in the ifTable. The B channels have an ifType value
-- of ds0(81).
-- This model is used while defining objects and tables
-- for management.
-- The ISDN MIB allows sub-layers. For example, the data transfer
-- over a B channel may take place with PPP encapsulation. While the
-- ISDN MIB describes the D and B channels, a media specific MIB
-- for PPP can be used on a layered basis. This is as per
-- the interfaces MIB.

-- Textual conventions

IsdnSignalingProtocol ::= TEXTUAL-CONVENTION
        STATUS      current
        DESCRIPTION
            "This data type is used as the syntax of the
             isdnSignalingProtocol object in the
             definition of ISDN-MIB's isdnSignalingTable.

             The definition of this textual convention with the
             addition of newly assigned values is published
             periodically by the IANA, in either the Assigned
             Numbers RFC, or some derivative of it specific to
             Internet Network Management number assignments.  (The
             latest arrangements can be obtained by contacting the
             IANA.)

             Requests for new values should be made to IANA via
             email ([e-mail])."
        SYNTAX      INTEGER {
             other(1),          -- none of the following
             dss1(2),           -- ITU DSS1 (formerly CCITT) Q.931
             etsi(3),           -- Europe / ETSI ETS300-102
                                -- plus supplementary services



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RFC 2127                        ISDN MIB                      March 1997


                                -- (ETSI 300-xxx)
                                -- note that NET3, NET5 define
                                -- test procedures for ETS300-102
                                -- and have been replaced by
                                -- I-CTR 3 and I-CTR 4.
             dass2(4),          -- U.K.   / DASS2 (PRI)
             ess4(5),           -- U.S.A. / AT&T 4ESS
             ess5(6),           -- U.S.A. / AT&T 5ESS
             dms100(7),         -- U.S.A. / Northern Telecom DMS100
             dms250(8),         -- U.S.A. / Northern Telecom DMS250
             ni1(9),            -- U.S.A. / National ISDN 1 (BRI)
             ni2(10),           -- U.S.A. / National ISDN 2 (BRI, PRI)
             ni3(11),           -- U.S.A. / next one
             vn2(12),           -- France / VN2
             vn3(13),           -- France / VN3
             vn4(14),           -- France / VN4 (ETSI with changes)
             vn6(15),           -- France / VN6 (ETSI with changes)
                                -- delta document CSE P 10-21 A
                                -- test document  CSE P 10-20 A
             kdd(16),           -- Japan  / KDD
             ins64(17),         -- Japan  / NTT INS64
             ins1500(18),       -- Japan  / NTT INS1500
             itr6(19),          -- Germany/ 1TR6 (BRI, PRI)
             cornet(20),        -- Germany/ Siemens HiCom CORNET
             ts013(21),         -- Australia / TS013
                                -- (formerly TPH 1962, BRI)
             ts014(22),         -- Australia / TS014
                                -- (formerly TPH 1856, PRI)
             qsig(23),          -- Q.SIG
             swissnet2(24),     -- SwissNet-2
             swissnet3(25)      -- SwissNet-3
        }

-- Isdn Mib objects definitions

isdnMibObjects OBJECT IDENTIFIER ::= { isdnMib 1 }

-- ISDN physical interface group

-- This group describes physical basic rate interfaces.

isdnBasicRateGroup      OBJECT IDENTIFIER ::= { isdnMibObjects 1 }

isdnBasicRateTable OBJECT-TYPE
        SYNTAX      SEQUENCE OF IsdnBasicRateEntry
        MAX-ACCESS  not-accessible
        STATUS      current
        DESCRIPTION



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RFC 2127                        ISDN MIB                      March 1997


            "Table containing configuration and operational
             parameters for all physical Basic Rate
             interfaces on this managed device."
        ::= { isdnBasicRateGroup 1 }

isdnBasicRateEntry OBJECT-TYPE
        SYNTAX      IsdnBasicRateEntry
        MAX-ACCESS  not-accessible
        STATUS      current
        DESCRIPTION
            "An entry in the ISDN Basic Rate Table."
        INDEX { ifIndex }
        ::= { isdnBasicRateTable 1 }

IsdnBasicRateEntry ::= SEQUENCE {
            isdnBasicRateIfType         INTEGER,
            isdnBasicRateLineTopology   INTEGER,
            isdnBasicRateIfMode         INTEGER,
            isdnBasicRateSignalMode     INTEGER
        }

isdnBasicRateIfType OBJECT-TYPE
        SYNTAX      INTEGER {
            isdns(75),
            isdnu(76)
        }
        MAX-ACCESS  read-write
        STATUS      current
        DESCRIPTION
            "The physical interface type. For 'S/T' interfaces,
             also called 'Four-wire Basic Access Interface',
             the value of this object is isdns(75).
             For 'U' interfaces, also called 'Two-wire Basic
             Access Interface', the value of this object is
             isdnu(76)."
        ::= { isdnBasicRateEntry 1 }

isdnBasicRateLineTopology OBJECT-TYPE
        SYNTAX      INTEGER {
            pointToPoint(1),
            pointToMultipoint(2)
        }
        MAX-ACCESS  read-write
        STATUS      current
        DESCRIPTION
            "The line topology to be used for this interface.
             Note that setting isdnBasicRateIfType to isdns(75)
             does not necessarily mean a line topology of



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RFC 2127                        ISDN MIB                      March 1997


             point-to-multipoint."
        ::= { isdnBasicRateEntry 2 }

isdnBasicRateIfMode OBJECT-TYPE
        SYNTAX      INTEGER {
            te(1),
            nt(2)
        }
        MAX-ACCESS  read-write
        STATUS      current
        DESCRIPTION
            "The physical interface mode. For TE mode, the value
             of this object is te(1). For NT mode, the value
             of this object is nt(2)."
        ::= { isdnBasicRateEntry 3 }

isdnBasicRateSignalMode OBJECT-TYPE
        SYNTAX      INTEGER {
            active(1),
            inactive(2)
        }
        MAX-ACCESS  read-write
        STATUS      current
        DESCRIPTION
            "The signaling channel operational mode for this interface.
             If active(1) there is a signaling channel on this
             interface. If inactive(2) a signaling channel is
             not available."
        ::= { isdnBasicRateEntry 4 }

-- The B channel (bearer channel) group

-- Note that disconnects can explicitely be handled using the
-- ifStack table. If a connection is to be disconnected,
-- 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,