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What's a MIB?

A MIB (Management Information Base) is a structured document that defines the data a device exposes over SNMP — things like interface counters, system uptime, or CPU load. Each module declares a set of named objects, organized into a tree.

What's SNMP?

SNMP (Simple Network Management Protocol) is how network devices — routers, switches, servers — report status and statistics to monitoring tools. It's the protocol; MIBs are the vocabulary it uses to describe what's being asked for.

What's an OID?

An OID (Object Identifier) is the numeric address of one piece of data in a MIB — a dotted sequence like 1.3.6.1.2.1.1.1, read from the root of a global tree down to one specific object. Names are easier to read; OIDs are what's actually sent over the wire.

Try it: sysDescr (1.3.6.1.2.1.1.1) →

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iso/org/dod/internet/private/enterprises/.5003/.9/.10/acAnalog/.1/.2/.1/acAnalogFxoFarEndDisconnectToneTable/acAnalogFxoFarEndDisconnectToneEntry/acAnalogFxoFarEndDisconnectToneType

acAnalogFxoFarEndDisconnectToneType

OBJECT-TYPE

1.3.6.1.4.1.5003.9.10.8.1.2.1.21.1.5

Access

read-write

Status

current

Source

AC-ANALOG-MIB

Sub-identifiers

Description

Defines which CPT types are detected as far-end disconnect. The CPT type is based on the acTCallProgressToneType enum. This is valid when FarEndDisconnectType allows CPT detection. Range = An array of up to 4 tone types. Access: Offline. AC INI-Param: DISCONNECTTONETYPE

Syntax

INTEGER { acNullTone(0) , acDialTone(1) , acRingingTone(2) , acBusyTone(3) , acCongestionTone(4) , acSpecialInfoTone(5) , acWarningTone(6) , acReorderTone(7) , acConfirmationTone(8) , acWaitingTone(9) , acCallProgressCo1Tone(10) , acCallProgressCo2Tone(11) , acOldMilliwattTone(12) , acNewMilliwattTone(13) , acMessageWaitingIndicator(14) , acStutterDialTone(15) , acStutterOffHookWarningTone(16) , acWaitingTone1(17) , acComfortTone(18) , acNAKTone(19) , acVacantNumberTone(20) , acSpecialConditionTone(21) , acDialTone2(22) , acOnHoldTone(23) , acCallTransferDialTone(24) , acCallForwardTone(25) , acCreditCardServiceTone(26) , acSpecialRecallDialTone(27) , acAlertingTone(28) , acNetworkCongestionTone(29) , acWaitingTone2(30) , acWaitingTone3(31) , acWaitingTone4(32) , acConfEnterTone(33) , acConfExitTone(34) , acConfLockTone(35) , acConfUnlockTone(36) , acConfTimeLimitTone(37) , acPayphoneRecognitionTone(38) , acCallerWaitingTone(39) , acCNGFaxTone(40) , acPrecConfNotifyType(41) , acPresConfNotifyType(42) , acPrecPreemptType(43) , acPrecRTType(44) , acR15reqOfANItone(45) , acCo1Tone(200) , acCo2Tone(201) , acPlayRecordBeepTone(202) , acTrunkTestingTestProgressTone(203) , acTrunkTestingTestTone(204) , acTrunkTestingGuardTone(205) , acFSKTrunkTestingTone(206) , acGeneralTrunkTestingTone1(207) , acGeneralTrunkTestingTone2(208) , acGeneralTrunkTestingTone3(209) , acSpecialInfoToneFirst(210) , acSpecialInfoToneSecond(211) , acSpecialInfoToneThird(212) , acTTYTone(213) , acTT904ContinuityTone(214) , acTTMilliwattLossMeasureTone(215) , acCarrierDialTone(216) , acCarrierAnswerTone(217) , acCarrierChargingTone(218) , acLongDistanceIndicatorTone(219) , acSTUModemFirstTone(298) , acSTUModemSecondTone(299) }