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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.

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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.

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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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ASTERISK-MIB

79 objects

Asterisk is an Open Source PBX. This MIB defined objects for managing Asterisk instances.

Imported Objects

DIGIUM-MIB	digium
SNMPv2-SMI	Counter32 Gauge32 Integer32 MODULE-IDENTITY OBJECT-TYPE TimeTicks Unsigned32
SNMPv2-TC	DisplayString TEXTUAL-CONVENTION TruthValue

OID	Name	Access	Status	Description
1.3.6.1.4.1.22736.1	Identityasterisk			Asterisk is an Open Source PBX. This MIB defined objects for managing Asterisk instances.
1.3.6.1.4.1.22736.1.1	NodeasteriskVersion
1.3.6.1.4.1.22736.1.1.1	ScalarastVersionString	read-only	current	Text version string of the version of Asterisk that the SNMP Agent was compiled to run against.
1.3.6.1.4.1.22736.1.1.2	ScalarastVersionTag	read-only	current	SubVersion revision of the version of Asterisk that the SNMP Agent was compiled to run against typically 0 for release-versions of Asterisk.
1.3.6.1.4.1.22736.1.2	NodeasteriskConfiguration
1.3.6.1.4.1.22736.1.2.1	ScalarastConfigUpTime	read-only	current	Time ticks since Asterisk was started.
1.3.6.1.4.1.22736.1.2.2	ScalarastConfigReloadTime	read-only	current	Time ticks since Asterisk was last reloaded.
1.3.6.1.4.1.22736.1.2.3	ScalarastConfigPid	read-only	current	The process id of the running Asterisk process.
1.3.6.1.4.1.22736.1.2.4	ScalarastConfigSocket	read-only	current	The control socket for giving Asterisk commands.
1.3.6.1.4.1.22736.1.2.5	ScalarastConfigCallsActive	read-only	current	The number of calls currently active on the Asterisk PBX.
1.3.6.1.4.1.22736.1.2.6	ScalarastConfigCallsProcessed	read-only	current	The total number of calls processed through the Asterisk PBX since last restart.
1.3.6.1.4.1.22736.1.3	NodeasteriskModules
1.3.6.1.4.1.22736.1.3.1	ScalarastNumModules	read-only	current	Number of modules currently loaded into Asterisk.
1.3.6.1.4.1.22736.1.4	NodeasteriskIndications
1.3.6.1.4.1.22736.1.4.1	ScalarastNumIndications	read-only	current	Number of indications currently defined in Asterisk.
1.3.6.1.4.1.22736.1.4.2	ScalarastCurrentIndication	read-only	current	Default indication zone to use.
1.3.6.1.4.1.22736.1.4.3	TableastIndicationsTable	not-accessible	current	Table with all the indication zones currently know to the running Asterisk instance.
1.3.6.1.4.1.22736.1.4.3.1	RowastIndicationsEntry	not-accessible	current	Information about a single indication zone.
1.3.6.1.4.1.22736.1.4.3.1.1	ColumnastIndIndex	read-only	current	Numerical index into the table of indication zones.
1.3.6.1.4.1.22736.1.4.3.1.2	ColumnastIndCountry	read-only	current	Country for which the indication zone is valid, typically this is the ISO 2-letter code of the country.
1.3.6.1.4.1.22736.1.4.3.1.3	ColumnastIndAlias	read-only	current
1.3.6.1.4.1.22736.1.4.3.1.4	ColumnastIndDescription	read-only	current	Description of the indication zone, usually the full name of the country it is valid for.
1.3.6.1.4.1.22736.1.5	NodeasteriskChannels
1.3.6.1.4.1.22736.1.5.1	ScalarastNumChannels	read-only	current	Current number of active channels.
1.3.6.1.4.1.22736.1.5.2	TableastChanTable	not-accessible	current	Table with details of the currently active channels in the Asterisk instance.
1.3.6.1.4.1.22736.1.5.2.1	RowastChanEntry	not-accessible	current	Details of a single channel.
1.3.6.1.4.1.22736.1.5.2.1.1	ColumnastChanIndex	read-only	current	Index into the channel table.
1.3.6.1.4.1.22736.1.5.2.1.2	ColumnastChanName	read-only	current	Name of the current channel.
1.3.6.1.4.1.22736.1.5.2.1.3	ColumnastChanLanguage	read-only	current
1.3.6.1.4.1.22736.1.5.2.1.4	ColumnastChanType	read-only	current	Underlying technology for the current channel.
1.3.6.1.4.1.22736.1.5.2.1.5	ColumnastChanMusicClass	read-only	current	Music class to be used for Music on Hold for this channel.
1.3.6.1.4.1.22736.1.5.2.1.6	ColumnastChanBridge	read-only	current	Which channel this channel is currently bridged (in a conversation) with.
1.3.6.1.4.1.22736.1.5.2.1.7	ColumnastChanMasq	read-only	current	Channel masquerading for us.
1.3.6.1.4.1.22736.1.5.2.1.8	ColumnastChanMasqr	read-only	current	Channel we are masquerading for.
1.3.6.1.4.1.22736.1.5.2.1.9	ColumnastChanWhenHangup	read-only	current	How long until this channel will be hung up.
1.3.6.1.4.1.22736.1.5.2.1.10	ColumnastChanApp	read-only	current	Current application for the channel.
1.3.6.1.4.1.22736.1.5.2.1.11	ColumnastChanData	read-only	current	Arguments passed to the current application.
1.3.6.1.4.1.22736.1.5.2.1.12	ColumnastChanContext	read-only	current	Current extension context.
1.3.6.1.4.1.22736.1.5.2.1.13	ColumnastChanMacroContext	read-only	current	Current macro context.
1.3.6.1.4.1.22736.1.5.2.1.14	ColumnastChanMacroExten	read-only	current	Current macro extension.
1.3.6.1.4.1.22736.1.5.2.1.15	ColumnastChanMacroPri	read-only	current	Current macro priority.
1.3.6.1.4.1.22736.1.5.2.1.16	ColumnastChanExten	read-only	current	Current extension.
1.3.6.1.4.1.22736.1.5.2.1.17	ColumnastChanPri	read-only	current	Current priority.
1.3.6.1.4.1.22736.1.5.2.1.18	ColumnastChanAccountCode	read-only	current	Account Code for billing.
1.3.6.1.4.1.22736.1.5.2.1.19	ColumnastChanForwardTo	read-only	current	Where to forward to if asked to dial on this interface.
1.3.6.1.4.1.22736.1.5.2.1.20	ColumnastChanUniqueId	read-only	current	Unique Channel Identifier.
1.3.6.1.4.1.22736.1.5.2.1.21	ColumnastChanCallGroup	read-only	current	Call Group.
1.3.6.1.4.1.22736.1.5.2.1.22	ColumnastChanPickupGroup	read-only	current	Pickup Group.
1.3.6.1.4.1.22736.1.5.2.1.23	ColumnastChanState	read-only	current	Channel state.
1.3.6.1.4.1.22736.1.5.2.1.24	ColumnastChanMuted	read-only	current	Transmission of voice data has been muted.
1.3.6.1.4.1.22736.1.5.2.1.25	ColumnastChanRings	read-only	current	Number of rings so far.
1.3.6.1.4.1.22736.1.5.2.1.26	ColumnastChanCidDNID	read-only	current	Dialled Number ID.
1.3.6.1.4.1.22736.1.5.2.1.27	ColumnastChanCidNum	read-only	current	Caller Number.
1.3.6.1.4.1.22736.1.5.2.1.28	ColumnastChanCidName	read-only	current	Caller Name.
1.3.6.1.4.1.22736.1.5.2.1.29	ColumnastChanCidANI	read-only	current	ANI
1.3.6.1.4.1.22736.1.5.2.1.30	ColumnastChanCidRDNIS	read-only	current	Redirected Dialled Number Service.
1.3.6.1.4.1.22736.1.5.2.1.31	ColumnastChanCidPresentation	read-only	current	Number Presentation/Screening.
1.3.6.1.4.1.22736.1.5.2.1.32	ColumnastChanCidANI2	read-only	current	ANI 2 (info digit).
1.3.6.1.4.1.22736.1.5.2.1.33	ColumnastChanCidTON	read-only	current	Type of Number.
1.3.6.1.4.1.22736.1.5.2.1.34	ColumnastChanCidTNS	read-only	current	Transit Network Select.
1.3.6.1.4.1.22736.1.5.2.1.35	ColumnastChanAMAFlags	read-only	current	AMA Flags.
1.3.6.1.4.1.22736.1.5.2.1.36	ColumnastChanADSI	read-only	current	Whether or not ADSI is detected on CPE.
1.3.6.1.4.1.22736.1.5.2.1.37	ColumnastChanToneZone	read-only	current	Indication zone to use for channel.
1.3.6.1.4.1.22736.1.5.2.1.38	ColumnastChanHangupCause	read-only	current	Why is the channel hung up.
1.3.6.1.4.1.22736.1.5.2.1.39	ColumnastChanVariables	read-only	current	Channel Variables defined for this channel.
1.3.6.1.4.1.22736.1.5.2.1.40	ColumnastChanFlags	read-only	current	Flags set on this channel.
1.3.6.1.4.1.22736.1.5.2.1.41	ColumnastChanTransferCap	read-only	current	Transfer Capabilities for this channel.
1.3.6.1.4.1.22736.1.5.3	ScalarastNumChanTypes	read-only	current	Number of channel types (technologies) supported.
1.3.6.1.4.1.22736.1.5.4	TableastChanTypeTable	not-accessible	current	Table with details of the supported channel types.
1.3.6.1.4.1.22736.1.5.4.1	RowastChanTypeEntry	not-accessible	current	Information about a technology we support, including how many channels are currently using this technology.
1.3.6.1.4.1.22736.1.5.4.1.1	ColumnastChanTypeIndex	read-only	current	Index into the table of channel types.
1.3.6.1.4.1.22736.1.5.4.1.2	ColumnastChanTypeName	read-only	current	Unique name of the technology we are describing.
1.3.6.1.4.1.22736.1.5.4.1.3	ColumnastChanTypeDesc	read-only	current	Description of the channel type (technology).
1.3.6.1.4.1.22736.1.5.4.1.4	ColumnastChanTypeDeviceState	read-only	current	Whether the current technology can hold device states.
1.3.6.1.4.1.22736.1.5.4.1.5	ColumnastChanTypeIndications	read-only	current	Whether the current technology supports progress indication.
1.3.6.1.4.1.22736.1.5.4.1.6	ColumnastChanTypeTransfer	read-only	current	Whether the current technology supports transfers, where Asterisk can get out from inbetween two bridged channels.
1.3.6.1.4.1.22736.1.5.4.1.7	ColumnastChanTypeChannels	read-only	current	Number of active channels using the current technology.
1.3.6.1.4.1.22736.1.5.5	NodeastChanScalars
1.3.6.1.4.1.22736.1.5.5.1	ScalarastNumChanBridge	read-only	current	Number of channels currently in a bridged state.