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RFC 4780

 
 
 

Management Information Base for the Session Initiation Protocol (SIP)

Part 2 of 3, p. 15 to 55
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7.2.  SIP Common MIB Module

SIP-COMMON-MIB DEFINITIONS ::= BEGIN

IMPORTS
    MODULE-IDENTITY,
    OBJECT-TYPE,
    NOTIFICATION-TYPE,
    Counter32,
    Gauge32,
    TimeTicks,
    Unsigned32,

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    mib-2
          FROM SNMPv2-SMI             -- RFC 2578

    RowStatus,
    TimeStamp,
    TruthValue
          FROM SNMPv2-TC              -- RFC 2579

    MODULE-COMPLIANCE,
    OBJECT-GROUP,
    NOTIFICATION-GROUP
          FROM SNMPv2-CONF            -- RFC 2580

    SnmpAdminString
          FROM SNMP-FRAMEWORK-MIB     -- RFC 3411

    SipTCTransportProtocol,
    SipTCMethodName,
    SipTCEntityRole,
    SipTCOptionTagHeaders
          FROM SIP-TC-MIB             -- RFC 4780

    applIndex
          FROM NETWORK-SERVICES-MIB   -- RFC 2788

    InetPortNumber
          FROM INET-ADDRESS-MIB;      -- RFC 4001

sipCommonMIB MODULE-IDENTITY
    LAST-UPDATED "200704200000Z"
    ORGANIZATION "IETF Session Initiation Protocol Working Group"
    CONTACT-INFO
             "SIP WG email: sip@ietf.org

              Co-editor  Kevin Lingle
                         Cisco Systems, Inc.
              postal:    7025 Kit Creek Road
                         P.O. Box 14987
                         Research Triangle Park, NC 27709
                         USA
              email:     klingle@cisco.com
              phone:     +1 919 476 2029

              Co-editor  Joon Maeng
              email:     jmaeng@austin.rr.com

              Co-editor  Jean-Francois Mule
                         CableLabs

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              postal:    858 Coal Creek Circle
                         Louisville, CO 80027
                         USA
              email:     jf.mule@cablelabs.com
              phone:     +1 303 661 9100

              Co-editor  Dave Walker
              email:     drwalker@rogers.com"
    DESCRIPTION
       "Session Initiation Protocol (SIP) Common MIB module.  This
        module defines objects that may be common to all SIP entities.

        SIP is an application-layer signaling protocol for creating,
        modifying and terminating multimedia sessions with one or more
        participants.  These sessions include Internet multimedia
        conferences and Internet telephone calls.  SIP is defined in
        RFC 3261 (June 2002).

        This MIB is defined for managing objects that are common to
        SIP User Agents (UAs), Proxy, Redirect, and Registrar servers.
        Objects specific to each of these entities MAY be managed using
        entity specific MIBs defined in other modules.

        Copyright (C) The IETF Trust (2007).  This version of
        this MIB module is part of RFC 4780; see the RFC itself for
        full legal notices."
    REVISION     "200704200000Z"
    DESCRIPTION
        "Initial version of the IETF SIP-COMMON-MIB module.  This
         version published as part of RFC 4780."
     ::= { mib-2 149 }

-- Top-Level Components of this MIB.
sipCommonMIBNotifications OBJECT IDENTIFIER ::= { sipCommonMIB 0 }
sipCommonMIBObjects       OBJECT IDENTIFIER ::= { sipCommonMIB 1 }
sipCommonMIBConformance   OBJECT IDENTIFIER ::= { sipCommonMIB 2 }

--
-- This MIB contains objects that are common to all SIP entities.
--

-- Common basic configuration
sipCommonCfgBase       OBJECT IDENTIFIER ::= { sipCommonMIBObjects 1 }

-- Protocol timer configuration
sipCommonCfgTimer      OBJECT IDENTIFIER ::= { sipCommonMIBObjects 2 }

-- SIP message summary statistics

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sipCommonSummaryStats  OBJECT IDENTIFIER ::= { sipCommonMIBObjects 3 }

-- Per method statistics
sipCommonMethodStats   OBJECT IDENTIFIER ::= { sipCommonMIBObjects 4 }

-- Per Status code or status code class statistics
sipCommonStatusCode    OBJECT IDENTIFIER ::= { sipCommonMIBObjects 5 }

-- Transaction statistics
sipCommonStatsTrans    OBJECT IDENTIFIER ::= { sipCommonMIBObjects 6 }

-- Method retry statistics
sipCommonStatsRetry    OBJECT IDENTIFIER ::= { sipCommonMIBObjects 7 }

-- Other statistics
sipCommonOtherStats    OBJECT IDENTIFIER ::= { sipCommonMIBObjects 8 }

-- Accessible-for-notify objects
sipCommonNotifObjects  OBJECT IDENTIFIER ::= { sipCommonMIBObjects 9 }

--
-- Common Configuration Objects
--
sipCommonCfgTable OBJECT-TYPE
    SYNTAX      SEQUENCE OF SipCommonCfgEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
       "This table contains the common configuration objects applicable
        to all SIP entities."
    ::= { sipCommonCfgBase 1 }

sipCommonCfgEntry OBJECT-TYPE
    SYNTAX      SipCommonCfgEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
       "A row of common configuration.

        Each row represents objects for a particular SIP entity
        instance present in this system.  applIndex is used to uniquely
        identify these instances of SIP entities and correlate them
        through the common framework of the NETWORK-SERVICES-MIB (RFC
        2788)."
    INDEX { applIndex }
    ::= { sipCommonCfgTable 1 }

SipCommonCfgEntry ::= SEQUENCE {

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        sipCommonCfgProtocolVersion      SnmpAdminString,
        sipCommonCfgServiceOperStatus    INTEGER,
        sipCommonCfgServiceStartTime     TimeTicks,
        sipCommonCfgServiceLastChange    TimeTicks,
        sipCommonCfgOrganization         SnmpAdminString,
        sipCommonCfgMaxTransactions      Unsigned32,
        sipCommonCfgServiceNotifEnable   BITS,
        sipCommonCfgEntityType           SipTCEntityRole
    }

sipCommonCfgProtocolVersion OBJECT-TYPE
    SYNTAX      SnmpAdminString
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
       "This object will reflect the version of SIP supported by this
        SIP entity.  It will follow the same format as SIP version
        information contained in the SIP messages generated by this SIP
        entity.  For example, entities supporting SIP version 2 will
        return 'SIP/2.0' as dictated by the standard."
    REFERENCE
       "RFC 3261, Section 7.1"
    ::= { sipCommonCfgEntry 1 }

sipCommonCfgServiceOperStatus OBJECT-TYPE
    SYNTAX      INTEGER {
                  unknown(1),
                  up(2),
                  down(3),
                  congested(4),
                  restarting(5),
                  quiescing(6),
                  testing(7)
                }
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
       "This object contains the current operational state of
        the SIP application.

        unknown    : The operational status cannot be determined
                     for some reason.
        up         : The application is operating normally and is
                     processing (receiving and possibly issuing) SIP
                     requests and responses.
        down       : The application is currently unable to process
                     SIP messages.
        congested  : The application is operational but no additional

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                     inbound transactions can be accommodated at the
                     moment.
        restarting : The application is currently unavailable, but it
                     is in the process of restarting and will
                     presumably, soon be able to process SIP messages.
        quiescing  : The application is currently operational
                     but has been administratively put into
                     quiescence mode.  Additional inbound
                     transactions MAY be rejected.
        testing    : The application is currently in test mode
                     and MAY not be able to process SIP messages.

        The operational status values defined for this object are not
        based on any specific information contained in the SIP
        standard."
    ::= { sipCommonCfgEntry 2 }

sipCommonCfgServiceStartTime OBJECT-TYPE
    SYNTAX      TimeTicks
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
       "The value of sysUpTime at the time the SIP entity was last
        started.  If started prior to the last re-initialization of the
        local network management subsystem, then this object contains a
        zero value."
    ::= { sipCommonCfgEntry 3 }

sipCommonCfgServiceLastChange OBJECT-TYPE
    SYNTAX      TimeTicks
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
       "The value of sysUpTime at the time the SIP entity entered its
        current operational state.  If the current state was entered
        prior to the last re-initialization of the local network
        management subsystem, then this object contains a zero value."
    ::= { sipCommonCfgEntry 4 }

sipCommonCfgOrganization OBJECT-TYPE
    SYNTAX      SnmpAdminString
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
       "This object contains the organization name that the SIP entity
        inserts into Organization headers of SIP messages processed by
        this system.  If the string is empty, no Organization header is
        to be generated."

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    REFERENCE
       "RFC 3261, Section 20.25"
    ::= { sipCommonCfgEntry 5 }

sipCommonCfgMaxTransactions OBJECT-TYPE
    SYNTAX      Unsigned32 (1..4294967295)
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
       "This object indicates the maximum number of simultaneous
        transactions per second that the SIP entity can manage.  In
        general, the value of this object SHOULD reflect a level of
        transaction processing per second that is considered high
        enough to impact the system's CPU and/or memory resources to
        the point of deteriorating SIP call processing but not high
        enough to cause catastrophic system failure."
    ::= { sipCommonCfgEntry 6 }

sipCommonCfgServiceNotifEnable OBJECT-TYPE
    SYNTAX      BITS {
                  sipCommonServiceColdStart(0),
                  sipCommonServiceWarmStart(1),
                  sipCommonServiceStatusChanged(2)
                }
    MAX-ACCESS  read-write
    STATUS      current
    DESCRIPTION
       "This object specifies which SIP service related notifications
        are enabled.  Each bit represents a specific notification.  If
        a bit has a value 1, the associated notification is enabled and
        will be generated by the SIP entity at the appropriate time.

        Support for these notifications is OPTIONAL: either none or all
        notification values are supported.  If an implementation does
        not support this object, it should return a 'noSuchObject'
        exception to an SNMP GET operation.  If notifications are
        supported, this object's default value SHOULD reflect
        sipCommonServiceColdStart and sipCommonServiceWarmStart enabled
        and sipCommonServiceStatusChanged disabled.

        This object value SHOULD persist across reboots."
    DEFVAL { { sipCommonServiceColdStart,
               sipCommonServiceWarmStart } }
    ::= { sipCommonCfgEntry 7 }

sipCommonCfgEntityType OBJECT-TYPE
    SYNTAX      SipTCEntityRole
    MAX-ACCESS  read-only

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    STATUS      current
    DESCRIPTION
       "This object identifies the list of SIP entities to which this
        row is related.  It is defined as a bit map.  Each bit
        represents a type of SIP entity.  If a bit has value 1, the
        SIP entity represented by this row plays the role of this
        entity type.  If a bit has value 0, the SIP entity represented
        by this row does not act as this entity type.  Combinations
        of bits can be set when the SIP entity plays multiple SIP
        roles."
    ::= { sipCommonCfgEntry 8 }

--
-- Support for multiple ports
--
sipCommonPortTable OBJECT-TYPE
    SYNTAX      SEQUENCE OF SipCommonPortEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
       "This table contains the list of ports that each SIP entity in
        this system is allowed to use.  These ports can be advertised
        using the Contact header in a REGISTER request or response."
    ::= { sipCommonCfgBase 2 }

sipCommonPortEntry OBJECT-TYPE
    SYNTAX      SipCommonPortEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
       "Specification of a particular port.

        Each row represents those objects for a particular SIP entity
        present in this system.  applIndex is used to uniquely identify
        these instances of SIP entities and correlate them through
        the common framework of the NETWORK-SERVICES-MIB (RFC 2788)."
    INDEX { applIndex, sipCommonPort }
    ::= { sipCommonPortTable 1 }

SipCommonPortEntry ::= SEQUENCE {
        sipCommonPort                 InetPortNumber,
        sipCommonPortTransportRcv     SipTCTransportProtocol
    }

sipCommonPort OBJECT-TYPE
    SYNTAX      InetPortNumber (1..65535)
    MAX-ACCESS  not-accessible
    STATUS      current

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    DESCRIPTION
       "This object reflects a particular port that can be used by the
        SIP application."
    ::= { sipCommonPortEntry 1 }

sipCommonPortTransportRcv OBJECT-TYPE
    SYNTAX      SipTCTransportProtocol
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
       "This object will specify the transport protocol the SIP entity
        will use to receive SIP messages.

        This object is a bit map.  Each bit represents a transport
        protocol.  If a bit has value 1, then that transport protocol
        is currently being used.  If a bit has value 0, then that
        transport protocol is currently not being used."
    ::= { sipCommonPortEntry 2 }

--
-- Support for SIP option tags (SIP extensions).
-- SIP extensions MAY be supported or required by SIP entities.
--

sipCommonOptionTagTable OBJECT-TYPE
    SYNTAX      SEQUENCE OF SipCommonOptionTagEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
       "This table contains a list of the SIP option tags (SIP
        extensions) that are either required, supported, or
        unsupported by the SIP entity.  These option tags are
        used in the Require, Proxy-Require, Supported, and
        Unsupported header fields.

        Example: If a user agent client supports, and requires the
        server to support, reliability of provisional responses
        (RFC 3262), this table contains a row with the option tag string
        '100rel' in sipCommonOptionTag and the OCTET STRING value of
        '1010 0000' or '0xA0' in sipCommonOptionTagHeaderField.

        If a server does not support the required feature (indicated in
        a Require header to a UAS, or in a Proxy-Require to a Proxy
        Server), the server returns a 420 Bad Extension listing the
        feature in an Unsupported header.

        Normally, the list of such features supported by an entity is
        static (i.e., will not change over time)."

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    REFERENCE
       "RFC 3261, Sections 19.2, 20.32, 20.29, 20.37, and 20.40"
    ::= { sipCommonCfgBase 3 }

sipCommonOptionTagEntry OBJECT-TYPE
    SYNTAX      SipCommonOptionTagEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
       "A particular SIP option tag (extension) supported or
        unsupported by the SIP entity, and which may be supported or
        required by a peer.

        Each row represents those objects for a particular SIP entity
        present in this system.  applIndex is used to uniquely identify
        these instances of SIP entities and correlate them through the
        common framework of the NETWORK-SERVICES-MIB (RFC 2788)."
    INDEX { applIndex, sipCommonOptionTagIndex }
    ::= { sipCommonOptionTagTable 1 }

SipCommonOptionTagEntry ::= SEQUENCE {
        sipCommonOptionTagIndex        Unsigned32,
        sipCommonOptionTag             SnmpAdminString,
        sipCommonOptionTagHeaderField  SipTCOptionTagHeaders
    }

sipCommonOptionTagIndex OBJECT-TYPE
    SYNTAX      Unsigned32 (1..4294967295)
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
       "This object uniquely identifies a conceptual row in the table."
    ::= { sipCommonOptionTagEntry 1 }

sipCommonOptionTag OBJECT-TYPE
    SYNTAX      SnmpAdminString
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
       "This object indicates the SIP option tag.  The option tag names
       are registered with IANA and available at http://www.iana.org."
    REFERENCE "RFC 3261, Section 27.1"
    ::= { sipCommonOptionTagEntry 2 }

sipCommonOptionTagHeaderField OBJECT-TYPE
    SYNTAX      SipTCOptionTagHeaders
    MAX-ACCESS  read-only
    STATUS      current

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    DESCRIPTION
       "This object indicates whether the SIP option tag is supported
        (Supported header), unsupported (Unsupported header), or
        required (Require or Proxy-Require header) by the SIP entity.
        A SIP option tag may be both supported and required."
    ::= { sipCommonOptionTagEntry 3 }

--
-- Supported SIP Methods
--
sipCommonMethodSupportedTable OBJECT-TYPE
    SYNTAX      SEQUENCE OF SipCommonMethodSupportedEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
       "This table contains a list of methods supported by each SIP
        entity in this system (see the standard set of SIP methods in
        Section 7.1 of RFC 3261).  Any additional methods that may be
        incorporated into the SIP protocol can be represented by this
        table without any requirement to update this MIB module.

        The table is informational in nature and conveys capabilities
        of the managed system to the SNMP Manager.

        From a protocol point of view, the list of methods advertised
        by the SIP entity in the Allow header (Section 20.5 of RFC
        3261) MUST be consistent with the methods reflected in this
        table."
 ::= { sipCommonCfgBase 4 }

sipCommonMethodSupportedEntry OBJECT-TYPE
    SYNTAX      SipCommonMethodSupportedEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
       "A particular method supported by the SIP entity.

        Each row represents those objects for a particular SIP entity
        present in this system.  applIndex is used to uniquely identify
        these instances of SIP entities and correlate them through
        the common framework of the NETWORK-SERVICES-MIB (RFC 2788)."
    INDEX { applIndex, sipCommonMethodSupportedIndex }
    ::= { sipCommonMethodSupportedTable 1 }

SipCommonMethodSupportedEntry ::= SEQUENCE {
        sipCommonMethodSupportedIndex     Unsigned32,
        sipCommonMethodSupportedName      SipTCMethodName
    }

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sipCommonMethodSupportedIndex OBJECT-TYPE
    SYNTAX      Unsigned32 (1..4294967295)
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
       "This object uniquely identifies a conceptual row in the table
        and reflects an assigned number used to identify a specific
        SIP method.

        This identifier is suitable for referencing the associated
        method throughout this and other MIBs supported by this managed
        system."
    ::= { sipCommonMethodSupportedEntry 1 }

sipCommonMethodSupportedName OBJECT-TYPE
    SYNTAX      SipTCMethodName
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
       "This object reflects the supported method's name.  The method
        name MUST be all upper case (e.g., 'INVITE')."
 ::= { sipCommonMethodSupportedEntry 2 }

--
-- SIP Timer Configuration
--
sipCommonCfgTimerTable OBJECT-TYPE
    SYNTAX      SEQUENCE OF SipCommonCfgTimerEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
       "This table contains timer configuration objects applicable to
        SIP user agent and SIP stateful Proxy Server entities."
    ::= { sipCommonCfgTimer 1 }

sipCommonCfgTimerEntry OBJECT-TYPE
    SYNTAX      SipCommonCfgTimerEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
       "A row of timer configuration.

        Each row represents those objects for a particular SIP entity
        present in this system.  applIndex is used to uniquely identify
        these instances of SIP entities and correlate them through
        the common framework of the NETWORK-SERVICES-MIB (RFC 2788).
        The objects in this table entry SHOULD be non-volatile and
        their value SHOULD be kept at reboot."

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    INDEX { applIndex }
    ::= { sipCommonCfgTimerTable 1 }

SipCommonCfgTimerEntry ::= SEQUENCE {
        sipCommonCfgTimerA               Unsigned32,
        sipCommonCfgTimerB               Unsigned32,
        sipCommonCfgTimerC               Unsigned32,
        sipCommonCfgTimerD               Unsigned32,
        sipCommonCfgTimerE               Unsigned32,
        sipCommonCfgTimerF               Unsigned32,
        sipCommonCfgTimerG               Unsigned32,
        sipCommonCfgTimerH               Unsigned32,
        sipCommonCfgTimerI               Unsigned32,
        sipCommonCfgTimerJ               Unsigned32,
        sipCommonCfgTimerK               Unsigned32,
        sipCommonCfgTimerT1              Unsigned32,
        sipCommonCfgTimerT2              Unsigned32,
        sipCommonCfgTimerT4              Unsigned32
    }

sipCommonCfgTimerA OBJECT-TYPE
    SYNTAX      Unsigned32 (100..1000)
    UNITS      "milliseconds"
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
       "This object reflects the initial value for the retransmit timer
        for the INVITE method.  The retransmit timer doubles after each
        retransmission, ensuring an exponential backoff in network
        traffic.  This object represents the initial time a SIP entity
        will wait to receive a provisional response to an INVITE before
        resending the INVITE request."
    REFERENCE
       "RFC 3261, Section 17.1.1.2"
    DEFVAL { 500 }
    ::= { sipCommonCfgTimerEntry 1 }

sipCommonCfgTimerB OBJECT-TYPE
    SYNTAX      Unsigned32 (32000..300000)
    UNITS      "milliseconds"
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
       "This object reflects the maximum time a SIP entity will wait to
        receive a final response to an INVITE.  The timer is started
        upon transmission of the initial INVITE request."
    REFERENCE
       "RFC 3261, Section 17.1.1.2"

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    DEFVAL { 32000 }
::= { sipCommonCfgTimerEntry 2 }

sipCommonCfgTimerC OBJECT-TYPE
    SYNTAX      Unsigned32 (180000..300000)
    UNITS      "milliseconds"
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
       "This object reflects the maximum time a SIP Proxy Server will
        wait to receive a provisional response to an INVITE.  The Timer
        C MUST be set for each client transaction when an INVITE
        request is proxied."
    REFERENCE
       "RFC 3261, Section 16.6"
    DEFVAL { 180000 }
    ::= { sipCommonCfgTimerEntry 3 }

sipCommonCfgTimerD OBJECT-TYPE
    SYNTAX      Unsigned32 (0..300000)
    UNITS      "milliseconds"
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
       "This object reflects the amount of time that the server
        transaction can remain in the 'Completed' state when unreliable
        transports are used.  The default value MUST be equal to or
        greater than 32000 for UDP transport, and its value MUST be 0
        for TCP/SCTP transport."
    REFERENCE
       "RFC 3261, Section 17.1.1.2"
    DEFVAL { 32000 }
    ::= { sipCommonCfgTimerEntry 4 }

sipCommonCfgTimerE OBJECT-TYPE
    SYNTAX      Unsigned32 (100..1000)
    UNITS      "milliseconds"
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
       "This object reflects the initial value for the retransmit timer
        for a non-INVITE method while in 'Trying' state.  The
        retransmit timer doubles after each retransmission until it
        reaches T2 to ensure an exponential backoff in network traffic.
        This object represents the initial time a SIP entity will wait
        to receive a provisional response to the request before
        resending the non-INVITE request."
    REFERENCE

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       "RFC 3261, Section 17.1.2.2"
    DEFVAL { 500 }
    ::= { sipCommonCfgTimerEntry 5 }

sipCommonCfgTimerF  OBJECT-TYPE
    SYNTAX      Unsigned32 (32000..300000)
    UNITS      "milliseconds"
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
       "This object reflects the maximum time a SIP entity will wait to
        receive a final response to a non-INVITE request.  The timer is
        started upon transmission of the initial request."
    REFERENCE
       "RFC 3261, Section 17.1.2.2"
    DEFVAL { 32000 }

    ::= { sipCommonCfgTimerEntry 6 }

sipCommonCfgTimerG  OBJECT-TYPE
    SYNTAX      Unsigned32 (0..1000)
    UNITS      "milliseconds"
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
       "This object reflects the initial value for the retransmit timer
        for final responses to INVITE requests.  If timer G fires, the
        response is passed to the transport layer again for
        retransmission, and timer G is set to fire in MIN(2*T1, T2)
        seconds.  From then on, when timer G fires, the response is
        passed to the transport again for transmission, and timer G is
        reset with a value that doubles, unless that value exceeds T2,
        in which case, it is reset with the value of T2.  The default
        value MUST be T1 for UDP transport, and its value MUST be 0 for
        reliable transport like TCP/SCTP."
    REFERENCE
       "RFC 3261, Section 17.2.1"
    DEFVAL { 500 }
    ::= { sipCommonCfgTimerEntry 7 }

sipCommonCfgTimerH  OBJECT-TYPE
    SYNTAX      Unsigned32 (32000..300000)
    UNITS      "milliseconds"
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
       "This object reflects the maximum time a server will wait to
        receive an ACK before it abandons retransmitting the response.

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        The timer is started upon entering the 'Completed' state."
    REFERENCE
       "RFC 3261, Section 17.2.1"
    DEFVAL { 32000 }
    ::= { sipCommonCfgTimerEntry 8 }

sipCommonCfgTimerI  OBJECT-TYPE
    SYNTAX      Unsigned32 (0..10000)
    UNITS      "milliseconds"
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
       "This object reflects the maximum time a SIP entity will wait to
        receive additional ACK message retransmissions.

        The timer is started upon entering the 'Confirmed' state.  The
        default value MUST be T4 for UDP transport and its value MUST
        be 0 for reliable transport like TCP/SCTP."
    REFERENCE
       "RFC 3261, Section 17.2.1"
    DEFVAL { 5000 }
    ::= { sipCommonCfgTimerEntry 9 }

sipCommonCfgTimerJ  OBJECT-TYPE
    SYNTAX      Unsigned32 (32000..300000)
    UNITS      "milliseconds"
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
       "This object reflects the maximum time a SIP server will wait to
        receive retransmissions of non-INVITE requests.  The timer is
        started upon entering the 'Completed' state for non-INVITE
        transactions.  When timer J fires, the server MUST transition to
        the 'Terminated' state."
    REFERENCE
       "RFC 3261, Section 17.2.2"
    DEFVAL { 32000 }
    ::= { sipCommonCfgTimerEntry 10 }

sipCommonCfgTimerK  OBJECT-TYPE
    SYNTAX      Unsigned32 (0..10000)
    UNITS      "milliseconds"
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
       "This object reflects the maximum time a SIP client will wait to
        receive retransmissions of responses to non-INVITE requests.
        The timer is started upon entering the 'Completed' state for

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        non-INVITE transactions.  When timer K fires, the server MUST
        transition to the 'Terminated' state.  The default value MUST
        be T4 for UDP transport, and its value MUST be 0 for reliable
        transport like TCP/SCTP."
    REFERENCE
       "RFC 3261, Section 17.1.2.2"
    DEFVAL { 5000 }
    ::= { sipCommonCfgTimerEntry 11 }

sipCommonCfgTimerT1  OBJECT-TYPE
    SYNTAX      Unsigned32 (200..10000)
    UNITS      "milliseconds"
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
       "This object reflects the T1 timer for a SIP entity.  T1 is an
        estimate of the round-trip time (RTT) between the client and
        server transactions."
    REFERENCE
       "RFC 3261, Section 17"
    DEFVAL { 500 }
    ::= { sipCommonCfgTimerEntry 12 }

sipCommonCfgTimerT2  OBJECT-TYPE
    SYNTAX      Unsigned32 (200..10000)
    UNITS      "milliseconds"
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
       "This object reflects the T2 timer for a SIP entity.  T2 is the
        maximum retransmit interval for non-INVITE requests and INVITE
        responses.  It's used in various parts of the protocol to reset
        other Timer* objects to this value."
    REFERENCE
       "RFC 3261, Section 17"
    DEFVAL { 4000 }
    ::= { sipCommonCfgTimerEntry 13 }

sipCommonCfgTimerT4  OBJECT-TYPE
    SYNTAX      Unsigned32 (200..10000)
    UNITS      "milliseconds"
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
       "This object reflects the T4 timer for a SIP entity.  T4 is the
        maximum duration a message will remain in the network.  It
        represents the amount of time the network will take to clear
        messages between client and server transactions.  It's used in

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        various parts of the protocol to reset other Timer* objects to
        this value."
    REFERENCE
       "RFC 3261, Section 17"
    DEFVAL { 5000 }
    ::= { sipCommonCfgTimerEntry 14 }

--
-- Common Statistics Objects
--

--
-- Summary Statistics
--
sipCommonSummaryStatsTable OBJECT-TYPE
    SYNTAX      SEQUENCE OF SipCommonSummaryStatsEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
       "This table contains the summary statistics objects applicable
        to all SIP entities.  Each row represents those objects for a
        particular SIP entity present in this system."
    ::= { sipCommonSummaryStats 1 }

sipCommonSummaryStatsEntry OBJECT-TYPE
    SYNTAX      SipCommonSummaryStatsEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
       "A row of summary statistics.

        Each row represents those objects for a particular SIP entity
        present in this system.  applIndex is used to uniquely identify
        these instances of SIP entities and correlate them through
        the common framework of the NETWORK-SERVICES-MIB (RFC 2788)."
    INDEX { applIndex }
    ::= { sipCommonSummaryStatsTable 1 }

SipCommonSummaryStatsEntry ::= SEQUENCE {
        sipCommonSummaryInRequests         Counter32,
        sipCommonSummaryOutRequests        Counter32,
        sipCommonSummaryInResponses        Counter32,
        sipCommonSummaryOutResponses       Counter32,
        sipCommonSummaryTotalTransactions  Counter32,
        sipCommonSummaryDisconTime         TimeStamp
    }

sipCommonSummaryInRequests OBJECT-TYPE

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    SYNTAX      Counter32
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
       "This object indicates the total number of SIP request messages
        received by the SIP entity, including retransmissions.

        Discontinuities in the value of this counter can occur at
        re-initialization of the SIP entity or service.  A Management
        Station can detect discontinuities in this counter by
        monitoring the sipCommonSummaryDisconTime object in the same
        row."
    ::= { sipCommonSummaryStatsEntry 1 }

sipCommonSummaryOutRequests OBJECT-TYPE
    SYNTAX      Counter32
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
       "This object contains the total number of SIP request messages
        sent out (originated and relayed) by the SIP entity.  Where a
        particular message is sent more than once, for example as a
        retransmission or as a result of forking, each transmission is
        counted separately.

        Discontinuities in the value of this counter can occur at
        re-initialization of the SIP entity or service.  A Management
        Station can detect discontinuities in this counter by
        monitoring the sipCommonSummaryDisconTime object in the same
        row."
    ::= { sipCommonSummaryStatsEntry 2 }

sipCommonSummaryInResponses OBJECT-TYPE
    SYNTAX      Counter32
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
       "This object contains the total number of SIP response messages
        received by the SIP entity, including retransmissions.

        Discontinuities in the value of this counter can occur at
        re-initialization of the SIP entity or service.  A Management
        Station can detect discontinuities in this counter by
        monitoring the sipCommonSummaryDisconTime object in the same
        row."
    ::= { sipCommonSummaryStatsEntry 3 }

sipCommonSummaryOutResponses OBJECT-TYPE

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    SYNTAX      Counter32
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
       "This object contains the total number of SIP response messages
        sent (originated and relayed) by the SIP entity including
        retransmissions.

        Discontinuities in the value of this counter can occur at
        re-initialization of the SIP entity or service.  A Management
        Station can detect discontinuities in this counter by
        monitoring the sipCommonSummaryDisconTime object in the same
        row."
    ::= { sipCommonSummaryStatsEntry 4 }

sipCommonSummaryTotalTransactions OBJECT-TYPE
    SYNTAX      Counter32
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
       "This object contains a count of the number of transactions that
        are in progress and transactions that have reached the
        'Terminated' state.  It is not applicable to stateless SIP Proxy
        Servers.

        A SIP transaction occurs between a client and a server, and
        comprises all messages from the first request sent from the
        client to the server, up to a final (non-1xx) response sent
        from the server to the client.

        If the request is INVITE and the final response is a non-2xx,
        the transaction also include an ACK to the response.  The ACK
        for a 2xx response to an INVITE request is a separate
        transaction.

        The branch ID parameter in the Via header field values serves
        as a transaction identifier.

        A transaction is identified by the CSeq sequence number within
        a single call leg.  The ACK request has the same CSeq number as
        the corresponding INVITE request, but comprises a transaction
        of its own.

        In the case of a forked request, each branch counts as a single
        transaction.

        For a transaction stateless Proxy Server, this counter is
        always 0.

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        Discontinuities in the value of this counter can occur at
        re-initialization of the SIP entity or service.  A Management
        Station can detect discontinuities in this counter by
        monitoring the sipCommonSummaryDisconTime object in the same
        row."
    ::= { sipCommonSummaryStatsEntry 5 }

sipCommonSummaryDisconTime  OBJECT-TYPE
    SYNTAX      TimeStamp
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
       "The value of the sysUpTime object when the counters for the
        summary statistics objects in this row last experienced a
        discontinuity."
    ::= { sipCommonSummaryStatsEntry 6 }

--
-- SIP Method Statistics
-- Total counts for each SIP method.
--
sipCommonMethodStatsTable OBJECT-TYPE
    SYNTAX      SEQUENCE OF SipCommonMethodStatsEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
       "This table contains the method statistics objects for SIP
        entities.  Each row represents those objects for a particular
        SIP entity present in this system."
    ::= { sipCommonMethodStats 1 }

sipCommonMethodStatsEntry OBJECT-TYPE
    SYNTAX      SipCommonMethodStatsEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
       "A row of per entity method statistics.

        Each row represents those objects for a particular SIP entity
        present in this system.  applIndex is used to uniquely identify
        these instances of SIP entities and correlate them through
        the common framework of the NETWORK-SERVICES-MIB (RFC 2788)."
    INDEX { applIndex, sipCommonMethodStatsName }
    ::= { sipCommonMethodStatsTable 1 }

SipCommonMethodStatsEntry ::= SEQUENCE {
        sipCommonMethodStatsName   SipTCMethodName,
        sipCommonMethodStatsOutbounds    Counter32,

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        sipCommonMethodStatsInbounds     Counter32,
        sipCommonMethodStatsDisconTime   TimeStamp

    }

sipCommonMethodStatsName OBJECT-TYPE
    SYNTAX      SipTCMethodName
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
       "This object uniquely identifies the SIP method related to the
        objects in a particular row."
    ::= { sipCommonMethodStatsEntry 1 }

sipCommonMethodStatsOutbounds OBJECT-TYPE
    SYNTAX      Counter32
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
       "This object reflects the total number of requests sent by the
        SIP entity, excluding retransmissions.  Retransmissions are
        counted separately and are not reflected in this counter.  A
        Management Station can detect discontinuities in this counter
        by monitoring the sipCommonMethodStatsDisconTime object in the
        same row."
    REFERENCE
       "RFC 3261, Section 7.1"
    ::= { sipCommonMethodStatsEntry 2 }

sipCommonMethodStatsInbounds OBJECT-TYPE
    SYNTAX      Counter32
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
       "This object reflects the total number of requests received by
        the SIP entity.  Retransmissions are counted separately and are
        not reflected in this counter.  A Management Station can detect
        discontinuities in this counter by monitoring the
        sipCommonMethodStatsDisconTime object in the same row."
    REFERENCE
       "RFC 3261, Section 7.1"
    ::= { sipCommonMethodStatsEntry 3 }

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

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       "The value of the sysUpTime object when the counters for the
        method statistics objects in this row last experienced a
        discontinuity."
    ::= { sipCommonMethodStatsEntry 4 }

--
-- Support for specific status codes
--
sipCommonStatusCodeTable OBJECT-TYPE
    SYNTAX      SEQUENCE OF SipCommonStatusCodeEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
       "This table contains the list of SIP status codes that each SIP
        entity in this system has been requested to monitor.  It is the
        mechanism by which specific status codes are monitored.
        Entries created in this table must not persist across reboots."
    ::= { sipCommonStatusCode 1 }

sipCommonStatusCodeEntry OBJECT-TYPE
    SYNTAX      SipCommonStatusCodeEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
       "This row contains information on a particular SIP status code
        that the SIP entity has been requested to monitor.  Entries
        created in this table must not persist across reboots.

        Each row represents those objects for a particular SIP entity
        present in this system.  applIndex is used to uniquely identify
        these instances of SIP entities and correlate them through
        the common framework of the NETWORK-SERVICES-MIB (RFC 2788)."
    INDEX { applIndex, sipCommonStatusCodeMethod,
            sipCommonStatusCodeValue }
    ::= { sipCommonStatusCodeTable 1 }

SipCommonStatusCodeEntry ::= SEQUENCE {
        sipCommonStatusCodeMethod     SipTCMethodName,
        sipCommonStatusCodeValue      Unsigned32,
        sipCommonStatusCodeIns        Counter32,
        sipCommonStatusCodeOuts       Counter32,
        sipCommonStatusCodeRowStatus  RowStatus,
        sipCommonStatusCodeDisconTime TimeStamp
    }

sipCommonStatusCodeMethod OBJECT-TYPE
    SYNTAX      SipTCMethodName
    MAX-ACCESS  not-accessible

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    STATUS      current
    DESCRIPTION
       "This object uniquely identifies a conceptual row in the
        table."
    ::= { sipCommonStatusCodeEntry 1 }

sipCommonStatusCodeValue OBJECT-TYPE
    SYNTAX      Unsigned32 (100..999)
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
       "This object contains a SIP status code value that the SIP
        entity has been requested to monitor.  All of the other
        information in the row is related to this value."
    ::= { sipCommonStatusCodeEntry 2 }

sipCommonStatusCodeIns OBJECT-TYPE
    SYNTAX      Counter32
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
       "This object reflects the total number of response messages
        received by the SIP entity with the status code value contained
        in the sipCommonStatusCodeValue column.

        Discontinuities in the value of this counter can occur at
        re-initialization of the SIP entity or service, or when the
        monitoring of the status code is temporarily disabled.  A
        Management Station can detect discontinuities in this counter
        by monitoring the sipCommonStatusCodeDisconTime object in the
        same row."
    ::= { sipCommonStatusCodeEntry 3 }

sipCommonStatusCodeOuts OBJECT-TYPE
    SYNTAX      Counter32
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
       "This object reflects the total number of response messages sent
        by the SIP entity with the status code value contained in the
        sipCommonStatusCodeValue column.

        Discontinuities in the value of this counter can occur at
        re-initialization of the SIP entity or service, or when the
        monitoring of the Status code is temporarily disabled.  A
        Management Station can detect discontinuities in this counter
        by monitoring the sipCommonStatusCodeDisconTime object in the
        same row."

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    ::= { sipCommonStatusCodeEntry 4 }

sipCommonStatusCodeRowStatus OBJECT-TYPE
    SYNTAX      RowStatus
    MAX-ACCESS  read-create
    STATUS      current
    DESCRIPTION
       "The row augmentation in sipCommonStatusCodeNotifTable will be
        governed by the value of this RowStatus.

        The values 'createAndGo' and 'destroy' are the only valid
        values allowed for this object.  If a row exists, it will
        reflect a status of 'active' when queried."
    ::= { sipCommonStatusCodeEntry 5 }

sipCommonStatusCodeDisconTime  OBJECT-TYPE
    SYNTAX TimeStamp
    MAX-ACCESS read-only
    STATUS current
    DESCRIPTION
       "The value of the sysUpTime object when the counters for the
        status code statistics objects in this row last experienced
        a discontinuity."
    ::= { sipCommonStatusCodeEntry 6 }

--
-- Support for specific status code notifications
--

sipCommonStatusCodeNotifTable OBJECT-TYPE
    SYNTAX      SEQUENCE OF SipCommonStatusCodeNotifEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
       "This table contains objects to control notifications related to
        particular status codes that each SIP entity in this system has
        been requested to monitor.

        There is an entry in this table corresponding to each entry in
        sipCommonStatusCodeTable.  Therefore, this table augments
        sipCommonStatusCodeTable and utilizes the same index
        methodology.

        The objects in this table are not included directly in the
        sipCommonStatusCodeTable simply to keep the status code
        notification control objects separate from the actual status
        code statistics."
    ::= { sipCommonStatusCode 2 }

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sipCommonStatusCodeNotifEntry OBJECT-TYPE
    SYNTAX      SipCommonStatusCodeNotifEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
       "This row contains information controlling notifications for a
        particular SIP status code that the SIP entity has been
        requested to monitor."
    AUGMENTS { sipCommonStatusCodeEntry }
    ::= { sipCommonStatusCodeNotifTable 1 }

SipCommonStatusCodeNotifEntry ::= SEQUENCE {
        sipCommonStatusCodeNotifSend         TruthValue,
        sipCommonStatusCodeNotifEmitMode     INTEGER,
        sipCommonStatusCodeNotifThresh       Unsigned32,
        sipCommonStatusCodeNotifInterval     Unsigned32
    }

sipCommonStatusCodeNotifSend OBJECT-TYPE
    SYNTAX      TruthValue
    MAX-ACCESS  read-write
    STATUS      current
    DESCRIPTION
       "This object controls whether a sipCommonStatusCodeNotif is
        emitted when the status code value specified by
        sipCommonStatusCodeValue is sent or received.  If the value of
        this object is 'true', then a notification is sent.  If it is
        'false', no notification is sent.
        Note well that a notification MAY be emitted for every message
        sent or received that contains the particular status code.
        Depending on the status code involved, this can cause a
        significant number of notification emissions that could be
        detrimental to network performance.  Managers are forewarned to
        be prudent in the use of this object to enable notifications.
        Look to sipCommonStatusCodeNotifEmitMode for alternative
        controls for sipCommonStatusCodeNotif emissions."
    DEFVAL { false }
    ::= { sipCommonStatusCodeNotifEntry 1 }

sipCommonStatusCodeNotifEmitMode OBJECT-TYPE
    SYNTAX      INTEGER {
                  normal(1),
                  oneShot(2),
                  triggered(3)  -- read-only
                }
    MAX-ACCESS  read-write
    STATUS      current
    DESCRIPTION

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       "The object sipCommonStatusCodeNotifSend MUST be set to 'true'
        for the values of this object to have any effect.  It is
        RECOMMENDED that the desired emit mode be established by this
        object prior to setting sipCommonStatusCodeNotifSend to 'true'.
        This object and the sipCommonStatusCodeNotifSend object can
        obviously be set independently, but their respective values
        will have a dependency on each other and the resulting
        notifications.

        This object specifies the mode for emissions of
        sipCommonStatusCodeNotif notifications.

        normal    : sipCommonStatusCodeNotif notifications will be
                    emitted by the system for each SIP response
                    message sent or received that contains the
                    desired status code.

        oneShot   : Only one sipCommonStatusCodeNotif notification
                    will be emitted.  It will be the next SIP response
                    message sent or received that contains the
                    desired status code.

                    No more notifications are emitted until this
                    object is set to 'oneShot' again or set to
                    'normal'.  This option is provided as a means of
                    quelling the potential promiscuous behavior that
                    can be associated with the
                    sipCommonStatusCodeNotif.

        triggered : This value is only readable and cannot be set.  It
                    reflects that the 'oneShot' case has occurred,
                    and indicates that the mode needs to be reset to
                    get further notifications.  The mode is reset by
                    setting this object to 'oneShot' or 'normal'."
    DEFVAL { oneShot }
    ::= { sipCommonStatusCodeNotifEntry 2 }

sipCommonStatusCodeNotifThresh OBJECT-TYPE
    SYNTAX      Unsigned32
    MAX-ACCESS  read-write
    STATUS      current
    DESCRIPTION
       "This object specifies the number of response messages sent or
        received by this system that are considered excessive.  Based
        on crossing that threshold, a
        sipCommonStatusCodeThreshExceededInNotif notification or a
        sipCommonStatusCodeThreshExceededOutNotif will be sent.  The
        sipCommonStatusCodeThreshExceededInNotif and

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        sipCommonStatusCodeThreshExceededOutNotif notifications can be
        used as an early warning mechanism in lieu of using
        sipCommonStatusCodeNotif.

        Note that the configuration applied by this object will be
        applied equally to inbound and outbound response messages."
    DEFVAL { 500 }
    ::= { sipCommonStatusCodeNotifEntry 3 }

sipCommonStatusCodeNotifInterval OBJECT-TYPE
    SYNTAX      Unsigned32
    UNITS      "seconds"
    MAX-ACCESS  read-write
    STATUS      current
    DESCRIPTION
       "This object specifies the time interval over which, if
        sipCommonStatusCodeThresh is exceeded with respect to sent or
        received messages, a sipCommonStatusCodeThreshExceededInNotif
        or sipCommonStatusCodeThreshExceededOutNotif notification will
        be sent.

        Note that the configuration applied by this object will be
        applied equally to inbound and outbound response messages."
    DEFVAL { 60 }
    ::= { sipCommonStatusCodeNotifEntry 4 }

--
-- Transaction Statistics
--
sipCommonTransCurrentTable OBJECT-TYPE
    SYNTAX      SEQUENCE OF SipCommonTransCurrentEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
       "This table contains information on the transactions currently
        awaiting definitive responses by each SIP entity in this
        system.

        This table does not apply to transaction stateless Proxy
        Servers."
    ::= { sipCommonStatsTrans 1 }

sipCommonTransCurrentEntry OBJECT-TYPE
    SYNTAX      SipCommonTransCurrentEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
       "Information on a particular SIP entity's current transactions.

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        Each row represents those objects for a particular SIP entity
        present in this system.  applIndex is used to uniquely identify
        these instances of SIP entities and correlate them through
        the common framework of the NETWORK-SERVICES-MIB (RFC 2788)."
    INDEX { applIndex }
    ::= { sipCommonTransCurrentTable 1 }

SipCommonTransCurrentEntry ::= SEQUENCE {
        sipCommonTransCurrentactions  Gauge32
    }

sipCommonTransCurrentactions OBJECT-TYPE
    SYNTAX      Gauge32 (0..4294967295)
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
       "This object contains the number of transactions awaiting
        definitive (non-1xx) response.  In the case of a forked
        request, each branch counts as a single transaction
        corresponding to the entity identified by applIndex."
::= { sipCommonTransCurrentEntry 1 }

--
-- SIP Retry Statistics
--
-- This group contains various statistics objects about
-- retransmission counts.
--
sipCommonStatsRetryTable OBJECT-TYPE
    SYNTAX      SEQUENCE OF SipCommonStatsRetryEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
       "This table contains retry statistics objects applicable to each
        SIP entity in this system."
    ::= { sipCommonStatsRetry 1 }

sipCommonStatsRetryEntry OBJECT-TYPE
    SYNTAX      SipCommonStatsRetryEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
       "A row of retry statistics.

        Each row represents those objects for a particular SIP entity
        present in this system.  applIndex is used to uniquely identify
        these instances of SIP entities and correlate them through the
        common framework of the NETWORK-SERVICES-MIB (RFC 2788)."

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    INDEX { applIndex, sipCommonStatsRetryMethod }
    ::= { sipCommonStatsRetryTable 1 }

SipCommonStatsRetryEntry ::= SEQUENCE {
        sipCommonStatsRetryMethod            SipTCMethodName,
        sipCommonStatsRetries                Counter32,
        sipCommonStatsRetryFinalResponses    Counter32,
        sipCommonStatsRetryNonFinalResponses Counter32,
        sipCommonStatsRetryDisconTime        TimeStamp
    }

sipCommonStatsRetryMethod OBJECT-TYPE
    SYNTAX      SipTCMethodName
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
       "This object uniquely identifies the SIP method related to the
        objects in a row."
    ::= { sipCommonStatsRetryEntry 1 }

sipCommonStatsRetries OBJECT-TYPE
    SYNTAX      Counter32
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
       "This object reflects the total number of request
        retransmissions that have been sent by the SIP entity.  Note
        that there could be multiple retransmissions per request.

        Discontinuities in the value of this counter can occur at
        re-initialization of the SIP entity or service.  A Management
        Station can detect discontinuities in this counter by
        monitoring the sipCommonStatsRetryDisconTime object in the same
        row."
    ::= { sipCommonStatsRetryEntry 2 }

sipCommonStatsRetryFinalResponses OBJECT-TYPE
    SYNTAX      Counter32
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
       "This object reflects the total number of Final Response retries
        that have been sent by the SIP entity.  Note that there could
        be multiple retransmissions per request.

        Discontinuities in the value of this counter can occur at
        re-initialization of the SIP entity or service.  A Management
        Station can detect discontinuities in this counter by

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        monitoring the sipCommonStatsRetryDisconTime object in the same
        row."
    ::= { sipCommonStatsRetryEntry 3 }

sipCommonStatsRetryNonFinalResponses OBJECT-TYPE
    SYNTAX      Counter32
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
       "This object reflects the total number of non-Final Response
        retries that have been sent by the SIP entity.

        Discontinuities in the value of this counter can occur at
        re-initialization of the SIP entity or service.  A Management
        Station can detect discontinuities in this counter by
        monitoring the sipCommonStatsRetryDisconTime object in the same
        row."
    ::= { sipCommonStatsRetryEntry 4 }

sipCommonStatsRetryDisconTime  OBJECT-TYPE
    SYNTAX      TimeStamp
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
       "The value of the sysUpTime object when the counters for the
        retry statistics objects in this row last experienced a
        discontinuity."
    ::= { sipCommonStatsRetryEntry 5 }

--
-- Other Common Statistics
--
sipCommonOtherStatsTable OBJECT-TYPE
    SYNTAX      SEQUENCE OF SipCommonOtherStatsEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
       "This table contains other common statistics supported by each
        SIP entity in this system."
    ::= { sipCommonOtherStats 1 }

sipCommonOtherStatsEntry OBJECT-TYPE
    SYNTAX      SipCommonOtherStatsEntry
    MAX-ACCESS  not-accessible
    STATUS      current
    DESCRIPTION
       "Information on a particular SIP entity's other common
        statistics.

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        Each row represents those objects for a particular SIP entity
        present in this system.  applIndex is used to uniquely identify
        these instances of SIP entities and correlate them through
        the common framework of the NETWORK-SERVICES-MIB (RFC 2788)."
    INDEX { applIndex }
    ::= { sipCommonOtherStatsTable 1 }

SipCommonOtherStatsEntry ::= SEQUENCE {
        sipCommonOtherStatsNumUnsupportedUris     Counter32,
        sipCommonOtherStatsNumUnsupportedMethods  Counter32,
        sipCommonOtherStatsOtherwiseDiscardedMsgs Counter32,
        sipCommonOtherStatsDisconTime   TimeStamp
    }

sipCommonOtherStatsNumUnsupportedUris OBJECT-TYPE
    SYNTAX      Counter32
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
       "Number of RequestURIs received with an unsupported scheme.
        A server normally responds to such requests with a 400 Bad
        Request status code.

        Discontinuities in the value of this counter can occur at
        re-initialization of the SIP entity or service.  A Management
        Station can detect discontinuities in this counter by
        monitoring the sipCommonOtherStatsDisconTime object in the same
        row."
    ::= { sipCommonOtherStatsEntry 1 }

sipCommonOtherStatsNumUnsupportedMethods OBJECT-TYPE
    SYNTAX      Counter32
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
       "Number of SIP requests received with unsupported methods.  A
        server normally responds to such requests with a 501 (Not
        Implemented) or 405 (Method Not Allowed).

        Discontinuities in the value of this counter can occur at
        re-initialization of the SIP entity or service.  A Management
        Station can detect discontinuities in this counter by
        monitoring the sipCommonOtherStatsDisconTime object in the same
        row."
    ::= { sipCommonOtherStatsEntry 2 }

sipCommonOtherStatsOtherwiseDiscardedMsgs OBJECT-TYPE
    SYNTAX      Counter32

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    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
       "Number of SIP messages received that, for any number of
        reasons, was discarded without a response.

        Discontinuities in the value of this counter can occur at
        re-initialization of the SIP entity or service.  A Management
        Station can detect discontinuities in this counter by
        monitoring the sipCommonOtherStatsDisconTime object in the same
        row."
    ::= { sipCommonOtherStatsEntry 3 }

sipCommonOtherStatsDisconTime OBJECT-TYPE
    SYNTAX      TimeStamp
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
       "The value of the sysUpTime object when the counters for the
        statistics objects in this row last experienced a
        discontinuity."
    ::= { sipCommonOtherStatsEntry 4 }

--
-- Notification related objects
--

--
-- Status code related notification objects.
--
sipCommonStatusCodeNotifTo OBJECT-TYPE
    SYNTAX      SnmpAdminString
    MAX-ACCESS  accessible-for-notify
    STATUS      current
    DESCRIPTION
       "This object contains the value of the To header in the message
        containing the status code that caused the notification.  The
        header name will be part of this object value.  For example,
        'To: Watson '."
    ::= { sipCommonNotifObjects 1 }

sipCommonStatusCodeNotifFrom OBJECT-TYPE
    SYNTAX      SnmpAdminString
    MAX-ACCESS  accessible-for-notify
    STATUS      current
    DESCRIPTION
       "This object contains the value of the From header in the
        message containing the status code that caused the

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        notification.  The header name will be part of this object
        value.  For example, 'From: Watson '."
    ::= { sipCommonNotifObjects 2 }

sipCommonStatusCodeNotifCallId OBJECT-TYPE
    SYNTAX      SnmpAdminString
    MAX-ACCESS  accessible-for-notify
    STATUS      current
    DESCRIPTION
       "This object contains the value of the Call-ID in the message
        containing the status code that caused the notification.  The
        header name will be part of this object value.  For example,
        'Call-ID: 5551212@example.com'."
    ::= { sipCommonNotifObjects 3 }

sipCommonStatusCodeNotifCSeq OBJECT-TYPE
    SYNTAX      Unsigned32
    MAX-ACCESS  accessible-for-notify
    STATUS      current
    DESCRIPTION
       "This object contains the CSeq value in the message containing
        the status code that caused the notification.  The header name
        will be part of this object value.  For example, 'CSeq: 1722
        INVITE'."
    ::= { sipCommonNotifObjects 4 }

--
-- General notification related objects.
--
sipCommonNotifApplIndex OBJECT-TYPE
    SYNTAX      Unsigned32 (1..2147483647)
    MAX-ACCESS  accessible-for-notify
    STATUS      current
    DESCRIPTION
       "This object contains the applIndex as described in RFC 2788.
        This object is created in order to allow a variable binding
        containing a value of applIndex in a notification."
    ::= { sipCommonNotifObjects 5 }

sipCommonNotifSequenceNumber OBJECT-TYPE
    SYNTAX      Unsigned32 (1..2147483647)
    MAX-ACCESS  accessible-for-notify
    STATUS      current
    DESCRIPTION
       "This object contains a sequence number for each notification
        generated by this SIP entity.  Each notification SHOULD have a
        unique sequence number.  A network manager can use this
        information to determine whether notifications from a

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        particular SIP entity have been missed.  The value of this
        object MUST start at 1 and increase by 1 with each generated
        notification.  If a system restarts, the sequence number MAY
        start again from 1."
    ::= { sipCommonNotifObjects 6 }

--
-- Notifications
--
sipCommonStatusCodeNotif NOTIFICATION-TYPE
    OBJECTS {
       sipCommonNotifSequenceNumber,
       sipCommonNotifApplIndex,
       sipCommonStatusCodeNotifTo,
       sipCommonStatusCodeNotifFrom,
       sipCommonStatusCodeNotifCallId,
       sipCommonStatusCodeNotifCSeq,
       sipCommonStatusCodeIns,
       sipCommonStatusCodeOuts
    }
    STATUS      current
    DESCRIPTION
       "Signifies that a specific status code has been sent or received
        by the system."
    ::= { sipCommonMIBNotifications 1 }

sipCommonStatusCodeThreshExceededInNotif NOTIFICATION-TYPE
    OBJECTS {
       sipCommonNotifSequenceNumber,
       sipCommonNotifApplIndex,
       sipCommonStatusCodeIns
    }
    STATUS      current
    DESCRIPTION
       "Signifies that a specific status code was found to have been
        received by the system frequently enough to exceed the
        configured threshold.  This notification can be used as
        an early warning mechanism in lieu of using
        sipCommonStatusCodeNotif."
    ::= { sipCommonMIBNotifications 2 }

sipCommonStatusCodeThreshExceededOutNotif NOTIFICATION-TYPE
    OBJECTS {
       sipCommonNotifSequenceNumber,
       sipCommonNotifApplIndex,
       sipCommonStatusCodeOuts
    }
    STATUS      current

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    DESCRIPTION
       "Signifies that a specific status code was found to have been
        sent by the system enough to exceed the configured threshold.
        This notification can be used as an early warning mechanism in
        lieu of using sipCommonStatusCodeNotif."
    ::= { sipCommonMIBNotifications 3 }

sipCommonServiceColdStart NOTIFICATION-TYPE
    OBJECTS {
       sipCommonNotifSequenceNumber,
       sipCommonNotifApplIndex,
       sipCommonCfgServiceStartTime
    }
    STATUS      current
    DESCRIPTION
       "Signifies that the SIP service has reinitialized itself or
        started for the first time.  This SHOULD result from a hard
        'down' to 'up' administrative status change.  The configuration
        or behavior of the service MAY be altered."
    ::= { sipCommonMIBNotifications 4 }

sipCommonServiceWarmStart NOTIFICATION-TYPE
    OBJECTS {
       sipCommonNotifSequenceNumber,
       sipCommonNotifApplIndex,
       sipCommonCfgServiceLastChange
    }
    STATUS      current
    DESCRIPTION
       "Signifies that the SIP service has reinitialized itself and is
        restarting after an administrative 'reset'.  The configuration
        or behavior of the service MAY be altered."
    ::= { sipCommonMIBNotifications 5 }

sipCommonServiceStatusChanged NOTIFICATION-TYPE
    OBJECTS {
       sipCommonNotifSequenceNumber,
       sipCommonNotifApplIndex,
       sipCommonCfgServiceLastChange,
       sipCommonCfgServiceOperStatus
    }
    STATUS      current
    DESCRIPTION
       "Signifies that the SIP service operational status has changed."
    ::= { sipCommonMIBNotifications 6 }

--
-- Conformance

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--
sipCommonMIBCompliances
    OBJECT IDENTIFIER ::= { sipCommonMIBConformance 1 }
sipCommonMIBGroups
    OBJECT IDENTIFIER ::= { sipCommonMIBConformance 2 }

--
-- Compliance Statements
--
sipCommonCompliance MODULE-COMPLIANCE
    STATUS      current
    DESCRIPTION
       "The compliance statement for SIP entities."

    MODULE -- this module
        MANDATORY-GROUPS { sipCommonConfigGroup,
                           sipCommonStatsGroup
                         }

    OBJECT       sipCommonStatusCodeRowStatus
    SYNTAX       RowStatus { active(1) }
    WRITE-SYNTAX RowStatus { createAndGo(4), destroy(6) }
    DESCRIPTION
       "Support for createAndWait and notInService is not required."

    OBJECT       sipCommonCfgServiceNotifEnable
    MIN-ACCESS   not-accessible
    DESCRIPTION
       "This object is optional and does not need to be supported."

    GROUP        sipCommonInformationalGroup
    DESCRIPTION
       "This group is OPTIONAL.  A SIP entity can elect to not provide
        any support for these objects, as they provide optional
        information."

    GROUP        sipCommonConfigTimerGroup
    DESCRIPTION
       "This group is OPTIONAL.  A SIP entity can elect to not provide
        any timer configuration."

    GROUP        sipCommonStatsRetryGroup
    DESCRIPTION
       "This group is OPTIONAL.  A SIP entity can elect to not provide
        any retry statistics."

    GROUP        sipCommonNotifGroup
    DESCRIPTION

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       "This group is OPTIONAL.  A SIP entity can elect to not provide
        any notifications.  If implemented, the
        sipCommonStatusCodeNotifGroup and sipCommonNotifObjectsGroup
        MUST also be implemented."

    GROUP        sipCommonStatusCodeNotifGroup
    DESCRIPTION
       "This group is OPTIONAL.  A SIP entity can elect to not provide
        any notifications.  If implemented, the sipCommonNotifGroup and
        sipCommonNotifObjectsGroup MUST also be implemented."

    GROUP        sipCommonNotifObjectsGroup
    DESCRIPTION
       "This group is OPTIONAL.  A SIP entity can elect to not provide
        any notifications.  If implemented, the
        sipCommonStatusCodeNotifGroup and sipCommonNotifGroup MUST also
        be implemented."

    ::= { sipCommonMIBCompliances 1 }

--
-- Units of Conformance
--
sipCommonConfigGroup OBJECT-GROUP
    OBJECTS {
            sipCommonCfgProtocolVersion,
            sipCommonCfgServiceOperStatus,
            sipCommonCfgServiceStartTime,
            sipCommonCfgServiceLastChange,
            sipCommonPortTransportRcv,
            sipCommonOptionTag,
            sipCommonOptionTagHeaderField,
            sipCommonCfgMaxTransactions,
            sipCommonCfgServiceNotifEnable,
            sipCommonCfgEntityType,
            sipCommonMethodSupportedName
    }
    STATUS  current
    DESCRIPTION
       "A collection of objects providing configuration common to all
        SIP entities."
    ::= { sipCommonMIBGroups 1 }

sipCommonInformationalGroup OBJECT-GROUP
    OBJECTS {
            sipCommonCfgOrganization
    }
    STATUS  current

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    DESCRIPTION
       "A collection of objects providing configuration common to all
        SIP entities."
    ::= { sipCommonMIBGroups 2 }

sipCommonConfigTimerGroup OBJECT-GROUP
    OBJECTS {
            sipCommonCfgTimerA,
            sipCommonCfgTimerB,
            sipCommonCfgTimerC,
            sipCommonCfgTimerD,
            sipCommonCfgTimerE,
            sipCommonCfgTimerF,
            sipCommonCfgTimerG,
            sipCommonCfgTimerH,
            sipCommonCfgTimerI,
            sipCommonCfgTimerJ,
            sipCommonCfgTimerK,
            sipCommonCfgTimerT1,
            sipCommonCfgTimerT2,
            sipCommonCfgTimerT4
    }
    STATUS  current
    DESCRIPTION
       "A collection of objects providing timer configuration common to
        all SIP entities."
    ::= { sipCommonMIBGroups 3 }

sipCommonStatsGroup OBJECT-GROUP
    OBJECTS {
            sipCommonSummaryInRequests,
            sipCommonSummaryOutRequests,
            sipCommonSummaryInResponses,
            sipCommonSummaryOutResponses,
            sipCommonSummaryTotalTransactions,
            sipCommonSummaryDisconTime,
            sipCommonMethodStatsOutbounds,
            sipCommonMethodStatsInbounds,
            sipCommonMethodStatsDisconTime,
            sipCommonStatusCodeIns,
            sipCommonStatusCodeOuts,
            sipCommonStatusCodeRowStatus,
            sipCommonStatusCodeDisconTime,
            sipCommonTransCurrentactions,
            sipCommonOtherStatsNumUnsupportedUris,
            sipCommonOtherStatsNumUnsupportedMethods,
            sipCommonOtherStatsOtherwiseDiscardedMsgs,
            sipCommonOtherStatsDisconTime

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    }
    STATUS  current
    DESCRIPTION
       "A collection of objects providing statistics common to all SIP
        entities."
    ::= { sipCommonMIBGroups 4 }

sipCommonStatsRetryGroup OBJECT-GROUP
    OBJECTS {
             sipCommonStatsRetries,
             sipCommonStatsRetryFinalResponses,
             sipCommonStatsRetryNonFinalResponses,
             sipCommonStatsRetryDisconTime
    }
    STATUS  current
    DESCRIPTION
       "A collection of objects providing retry statistics."
    ::= { sipCommonMIBGroups 5 }

sipCommonNotifGroup NOTIFICATION-GROUP
    NOTIFICATIONS {
            sipCommonStatusCodeNotif,
            sipCommonStatusCodeThreshExceededInNotif,
            sipCommonStatusCodeThreshExceededOutNotif,
            sipCommonServiceColdStart,
            sipCommonServiceWarmStart,
            sipCommonServiceStatusChanged
    }

    STATUS  current
    DESCRIPTION
       "A collection of notifications common to all SIP entities."
    ::= { sipCommonMIBGroups 6 }

sipCommonStatusCodeNotifGroup OBJECT-GROUP
    OBJECTS {
            sipCommonStatusCodeNotifSend,
            sipCommonStatusCodeNotifEmitMode,
            sipCommonStatusCodeNotifThresh,
            sipCommonStatusCodeNotifInterval
   }
    STATUS  current
    DESCRIPTION
       "A collection of objects related to the control and attribution
        of notifications common to all SIP entities."
    ::= { sipCommonMIBGroups 7 }

sipCommonNotifObjectsGroup OBJECT-GROUP

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    OBJECTS {
            sipCommonStatusCodeNotifTo,
            sipCommonStatusCodeNotifFrom,
            sipCommonStatusCodeNotifCallId,
            sipCommonStatusCodeNotifCSeq,
            sipCommonNotifApplIndex,
            sipCommonNotifSequenceNumber
    }
    STATUS  current
    DESCRIPTION
       "A collection of accessible-for-notify objects related to the
        notification defined in this MIB module."
    ::= { sipCommonMIBGroups 8 }

END



(page 55 continued on part 3)

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