SONUS-SYSTEM-TIMING-MIB

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Organization: Sonus Networks, Inc.

Last Updated: 2001-02-03

Category: GPS and Network Timing, Sonus Networks VoIP Softswitch

Description: Manages Sonus Networks softswitch system clock and timing source selection for synchronization.

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What Is SONUS-SYSTEM-TIMING-MIB?

SONUS-SYSTEM-TIMING-MIB manages system clock and timing-source selection for network synchronization on Sonus Networks softswitches, a function critical to interworking TDM and VoIP traffic correctly. It exposes per-shelf timing configuration covering failover/recovery guard times, free-run alarm state, and reference-switching/revert behavior. Monitoring this MIB reveals the health of the device's clock-synchronization hardware/software, most notably whether the shelf has lost its external reference and dropped into free-run mode, which is a direct timing-hardware fault indicator, alongside notifications when reference switching occurs. It reflects general telecom clock-synchronization concepts (akin to Stratum/SSU reference switching) and shares shelf-indexing conventions with other Sonus MIBs. It is deployed on carrier gateways requiring precise network clock synchronization for TDM trunk interworking. Engineers can download the SONUS-SYSTEM-TIMING-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in SONUS-SYSTEM-TIMING-MIB. Use the built-in SNMP Monitoring Browser to explore available variables, view their current values and descriptions, and select the objects you want to monitor. You can then create SNMP monitors, configure thresholds, and receive alerts when monitored values change.

Supported Devices

Sonus Networks softswitch
Sonus media gateway shelf

Monitoring Examples

sonusStShelfAdmnTable/sonusStShelfAdmnEntry per sonusStShelfAdmnShelfIndex exposes sonusStShelfAdmnFreeRunAlarm, which an admin would poll to detect that the system has lost its external timing reference and dropped into free-run mode - a hardware/timing fault. sonusStShelfAdmnFailoverGuardTime and sonusStShelfAdmnRecoveryGuardTime configure how quickly the shelf reacts to a timing-source failure, and sonusStShelfAdmnTimingSourceAction plus sonusSystemTimingMIBNotifications show manual/automatic switching actions and deliver traps when reference switching occurs.

What Can Be Monitored

timing source selection
free-run alarm state
failover/recovery guard times
reference switching notifications
revert switching configuration

Imported Objects

From SNMPv2-SMI

Integer32
MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-TYPE

From SNMPv2-TC

DisplayString
RowStatus

From SONUS-COMMON-MIB

sonusEventClass	OBJECT-TYPE
sonusEventDescription	OBJECT-TYPE
sonusEventLevel	OBJECT-TYPE
sonusShelfIndex	OBJECT-TYPE
sonusSlotIndex	OBJECT-TYPE

From SONUS-SMI

sonusSystemMIBs

OBJECT-IDENTITY

From SONUS-TC

HwTypeID
SonusAdminState
SonusEventString
SonusMtaSlotIndex
SonusShelfIndex
SonusSlotIndex
SonusTimingSource

OIDs

OID symbolic	OID numeric	Type	Access	Description
sonusSystemTimingMIB	1.3.6.1.4.1.2879.2.1.3			The MIB Module for System Timing management.
sonusSystemTimingMIBObjects	1.3.6.1.4.1.2879.2.1.3.1
sonusStShelfAdmnTable	1.3.6.1.4.1.2879.2.1.3.1.1		not-accessible
sonusStShelfAdmnEntry	1.3.6.1.4.1.2879.2.1.3.1.1.1		not-accessible
SON sonusStShelfAdmnShelfIndex	1.3.6.1.4.1.2879.2.1.3.1.1.1.1	SonusShelfIndex	read-only	Identifies the target shelf within the node.
I32 sonusStShelfAdmnFailoverGuardTime	1.3.6.1.4.1.2879.2.1.3.1.1.1.2	Integer32	read-write	Indicates how long a timing source can be faulting before switchover to another source is initiated
I32 sonusStShelfAdmnRecoveryGuardTime	1.3.6.1.4.1.2879.2.1.3.1.1.1.3	Integer32	read-write	Indicates how long a timing source must be valid for, after it has faulted, before it will be considered valid again.
INT sonusStShelfAdmnTransmitRemoteAlarm	1.3.6.1.4.1.2879.2.1.3.1.1.1.4	INTEGER	read-write	Not Supported
INT sonusStShelfAdmnRevertRefSwitching	1.3.6.1.4.1.2879.2.1.3.1.1.1.5	INTEGER	read-write	If enabled, then a timing source which has failed, but then becomes valid again, will be reconsidered for use. If disabled, then once a timing source fails, it will never be automatically reconsidered for use. To use the source again requires manual user intervention.
INT sonusStShelfAdmnRevertMtaSwitching	1.3.6.1.4.1.2879.2.1.3.1.1.1.6	INTEGER	read-write	If enabled, then an MTA which is hot-inserted will automatically be brought on line and made available for use. If disabled, then an MTA which is hot-inserted will require manual user configuration before being available for use.
I32 sonusStShelfAdmnRevertInsertDelay	1.3.6.1.4.1.2879.2.1.3.1.1.1.7	Integer32	read-write	MTA warm-up period. When an MTA is hot-inserted, the card will be allowed to warm up and stabilize for this amount of time before being put back into service. This warm-up period is also used during cold start of a shelf.
INT sonusStShelfAdmnFreeRunAlarm	1.3.6.1.4.1.2879.2.1.3.1.1.1.8	INTEGER	read-write	Not Supported
INT sonusStShelfAdmnTimingSourceAction	1.3.6.1.4.1.2879.2.1.3.1.1.1.9	INTEGER	read-write	Resequence will cause the timing sequence list to be re-evaluated. This may cause the current active timing source to change.
ROW sonusStShelfAdmnRowStatus	1.3.6.1.4.1.2879.2.1.3.1.1.1.10	RowStatus	read-write	This object indicates the row status for this table.
INT sonusStShelfAdmnSourceReconfigAlg	1.3.6.1.4.1.2879.2.1.3.1.1.1.11	INTEGER	read-write	This object indicates which algorithm should be used to select timing sources for use as System Synchronized sources. Selecting Ordered_list causes sources to be selected for use in strict numerical order, as assigned by default or by the operator. Selecting SSM_Quality will cause sources to be selected based upon the quality level of the timing source, as indicated by the sources Synchronized Status Messages. Do not select SSM_Quality unless all configured timing sources support SSM's
INT sonusStShelfAdmnMtaSourceAffinity	1.3.6.1.4.1.2879.2.1.3.1.1.1.12	INTEGER	read-write	This object works in conjunction with the Source Reconfiguration Algorithm object. If sticky is selected, System Timing Manager will exhaust oll timing sources on an MTA at all quality levels before selecting a timing source on the alternate MTA. If none is selected, timing sources will be chosen based on stratum quality only, reguardless of which MTA is providing the source. This object has no effect when the Source Reconfiguration Algorithm is set to Ordered_list.
sonusStShelfStatTable	1.3.6.1.4.1.2879.2.1.3.1.2		not-accessible
sonusStShelfStatEntry	1.3.6.1.4.1.2879.2.1.3.1.2.1		not-accessible
SON sonusStShelfStatShelfIndex	1.3.6.1.4.1.2879.2.1.3.1.2.1.1	SonusShelfIndex	read-only
SON sonusStShelfStatActiveMtaSlot	1.3.6.1.4.1.2879.2.1.3.1.2.1.2	SonusMtaSlotIndex	read-only	Identifies which MTA is providing the System Synchronized Timing signal.
SON sonusStShelfStatActiveSource	1.3.6.1.4.1.2879.2.1.3.1.2.1.3	SonusTimingSource	read-only	Identifies what timing source the active MTA is using to provide System Synchronized Timing.
sonusStMtaAdmnTable	1.3.6.1.4.1.2879.2.1.3.1.3		not-accessible
sonusStMtaAdmnEntry	1.3.6.1.4.1.2879.2.1.3.1.3.1		not-accessible
SON sonusStMtaAdmnShelfIndex	1.3.6.1.4.1.2879.2.1.3.1.3.1.1	SonusShelfIndex	read-only	Identifies the target shelf within the node.
SON sonusStMtaAdmnMtaSlotIndex	1.3.6.1.4.1.2879.2.1.3.1.3.1.2	SonusMtaSlotIndex	read-only	Identifies the target slot within the shelf.
SON sonusStMtaAdmnState	1.3.6.1.4.1.2879.2.1.3.1.3.1.3	SonusAdminState	read-write	If enabled, the MTA can participate in system timing. If disabled, then it will be removed from service and not allowed to participate. All timing sequence entries bound to this node will be marked as out of service. In a non-redundant configuration the MTA admin state cannot be disabled.
INT sonusStMtaAdmnLineEncoding	1.3.6.1.4.1.2879.2.1.3.1.3.1.4	INTEGER	read-write	Select AMI or B8ZS line coding for BITS LIU. Select HDB3 for SETS LIU
INT sonusStMtaAdmnSsmChannelBit	1.3.6.1.4.1.2879.2.1.3.1.3.1.5	INTEGER	read-write	MTA 20, E1 support only. Identifies which of the additional spare bits, embedded within the framing pattern, contains the SSM channel
INT sonusStMtaAdmnFramerMode	1.3.6.1.4.1.2879.2.1.3.1.3.1.6	INTEGER	read-write	Select ESF or D4/SF for BITS framer. ESF should be selected if B8ZS has been selected for the line encoding. D4/SF should be selected if AMI has been selected for the line encoding. Select MF or MF-CRC4 for SETS framer
INT sonusStMtaAdmnFramerTransmitYellowAlarm	1.3.6.1.4.1.2879.2.1.3.1.3.1.7	INTEGER	read-write	Not supported
INT sonusStMtaAdmnLiuTransmitAllOnes	1.3.6.1.4.1.2879.2.1.3.1.3.1.8	INTEGER	read-write	Not supported
INT sonusStMtaAdmnAction	1.3.6.1.4.1.2879.2.1.3.1.3.1.9	INTEGER	read-write	Selecting AVAILABLE will cause the MTA to be moved from the Out-Of-Service state to the Available-For-Use state. This command is necessary to manually make an MTA available for use after it has failed, and revertive MTA switching is not enabled. This may cause the current active timing source to change.
ROW sonusStMtaAdmnRowStatus	1.3.6.1.4.1.2879.2.1.3.1.3.1.10	RowStatus	read-write	This object indicates the row status for this table.
sonusStMtaStatTable	1.3.6.1.4.1.2879.2.1.3.1.4		not-accessible
sonusStMtaStatEntry	1.3.6.1.4.1.2879.2.1.3.1.4.1		not-accessible
SON sonusStMtaStatShelfIndex	1.3.6.1.4.1.2879.2.1.3.1.4.1.1	SonusShelfIndex	read-only
SON sonusStMtaStatMtaSlotIndex	1.3.6.1.4.1.2879.2.1.3.1.4.1.2	SonusMtaSlotIndex	read-only
INT sonusStMtaStatOperStat	1.3.6.1.4.1.2879.2.1.3.1.4.1.3	INTEGER	read-only	Indicates the operational status of the MTA
STR sonusStMtaStatMtaHwDesc	1.3.6.1.4.1.2879.2.1.3.1.4.1.4	DisplayString	read-only	Description of the MTA hardware in the form of 'hwtype_hwRev'.
HWT sonusStMtaStatMtaHwType	1.3.6.1.4.1.2879.2.1.3.1.4.1.5	HwTypeID	read-only	Description of the MTA hardware Type only. Entry 5+6 obsolete entry 4.
I32 sonusStMtaStatMtaHwTypeRev	1.3.6.1.4.1.2879.2.1.3.1.4.1.6	Integer32	read-only	Description of the MTA hardware type revision. Entry 5+6 obsolete entry 4.
STR sonusStMtaStatMtaSerialNum	1.3.6.1.4.1.2879.2.1.3.1.4.1.7	DisplayString	read-only	Identifies the serial number of the server module. This is the serial number assigned to the mta module in manufacturing.
STR sonusStMtaStatMtaPartNum	1.3.6.1.4.1.2879.2.1.3.1.4.1.8	DisplayString	read-only	Identifies the part number of the server module. This is the part number assigned to the mta module in manufacturing.
sonusStTimingSourceTable	1.3.6.1.4.1.2879.2.1.3.1.5		not-accessible
sonusStTimingSourceEntry	1.3.6.1.4.1.2879.2.1.3.1.5.1		not-accessible
SON sonusStTimingSourceShelfIndex	1.3.6.1.4.1.2879.2.1.3.1.5.1.1	SonusShelfIndex	read-write
I32 sonusStTimingSourceMtaSlotIndex	1.3.6.1.4.1.2879.2.1.3.1.5.1.2	Integer32	read-write	Indicates which MTA this timing node is bound to.
SON sonusStTimingSource	1.3.6.1.4.1.2879.2.1.3.1.5.1.3	SonusTimingSource	read-write	Indicates which physical timing source is bound to this node. External BITS sources are used by MTA 10's, in T1 based chassis'. External SETS sources are used by MTA 2X's, in E1 based chassis'. REFCLK's are based upon timing recovered from a CNS or PNS Server card. HOLDOVER mimics the last known good source before it failed. OSCILLATOR is used when no other valid sources exist on the currently active MTA.
SON sonusStTimingSourceState	1.3.6.1.4.1.2879.2.1.3.1.5.1.4	SonusAdminState	read-write	If enabled, the source can participate in system timing. If disabled, then it will be removed from service and not be allowed to participate.
I32 sonusStTimingSourceSequenceNum	1.3.6.1.4.1.2879.2.1.3.1.5.1.5	Integer32	read-write	The timing sequence number is automatically generated
INT sonusStTimingSourceAction	1.3.6.1.4.1.2879.2.1.3.1.5.1.6	INTEGER	read-write	Selecting AVAILABLE will cause the timing source to be moved from the Out-Of-Service state to the Available-For-Use state. This command is necessary to manually make a source available for use after it has failed, and revertive source switching is not enabled. This may cause the current active timing source to change.
ROW sonusStTimingSourceRowStatus	1.3.6.1.4.1.2879.2.1.3.1.5.1.7	RowStatus	read-write	This object indicates the row status for this table.
sonusStTimingSourceStatTable	1.3.6.1.4.1.2879.2.1.3.1.6		not-accessible
sonusStTimingSourceStatEntry	1.3.6.1.4.1.2879.2.1.3.1.6.1		not-accessible
SON sonusStTimingSourceStatShelfIndex	1.3.6.1.4.1.2879.2.1.3.1.6.1.1	SonusShelfIndex	read-only	Indicates shelf.
SON sonusStTimingSourceStatMtaSlotIndex	1.3.6.1.4.1.2879.2.1.3.1.6.1.2	SonusMtaSlotIndex	read-only	Indicates which MTA this timing node is bound to.
SON sonusStTimingSourceStat	1.3.6.1.4.1.2879.2.1.3.1.6.1.3	SonusTimingSource	read-only	Indicates the physical timing source
INT sonusStTimingSourceStatState	1.3.6.1.4.1.2879.2.1.3.1.6.1.4	INTEGER	read-only	Indicates the current overall state of the timing source, including the hardware state, adminitrative mode and shelf configuration
INT sonusStTimingSourceStatTraceability	1.3.6.1.4.1.2879.2.1.3.1.6.1.5	INTEGER	read-only	Indicates the Quality Level of the System Synchronized Timing Source
INT sonusStTimingSourceStatLineState	1.3.6.1.4.1.2879.2.1.3.1.6.1.6	INTEGER	read-only	Indicates the current physical status of the timing source
sonusStChannelBindingTable	1.3.6.1.4.1.2879.2.1.3.1.7		not-accessible	This table describes how derived timing sources should be mapped to the MTA hardware
sonusStChannelBindingEntry	1.3.6.1.4.1.2879.2.1.3.1.7.1		not-accessible
SON sonusStChannelBindingShelfIndex	1.3.6.1.4.1.2879.2.1.3.1.7.1.1	SonusShelfIndex	read-only
SON sonusStChannelBindingSlotIndex	1.3.6.1.4.1.2879.2.1.3.1.7.1.2	SonusSlotIndex	read-only	Server slot number to provide a recovered clock source. The same server can be configured to provide both possible recovered clocks as long as different channels(spans) are selected, and the REFCLK each is bound to differs
I32 sonusStChannelBindingChannel	1.3.6.1.4.1.2879.2.1.3.1.7.1.3	Integer32	read-only	T1/E1 span or OC12 port number to provide the recovered clock source. T1 span range is 1-12(CNS10), 1-28(CNS30), E1 span range is 1-8(CNS20), OC12 port number(PNS20) is 1 only.
INT sonusStChannelBindingRefClk	1.3.6.1.4.1.2879.2.1.3.1.7.1.4	INTEGER	read-only	Backplane signal the recovered clock source should be bound to. Each REFCLK must only be bound to a single Server slot/span.
ROW sonusStChannelBindingRowStatus	1.3.6.1.4.1.2879.2.1.3.1.7.1.5	RowStatus	read-write	This object indicates the row status for this table.
sonusSystemTimingMIBNotifications	1.3.6.1.4.1.2879.2.1.3.2
sonusSystemTimingMIBNotificationsPrefix	1.3.6.1.4.1.2879.2.1.3.2.0
NTF sonusSystemTimingActiveFailedNotification	1.3.6.1.4.1.2879.2.1.3.2.0.1			This trap indicates that the currently active System Timing clock source has failed.
NTF sonusSystemTimingActiveSwitchoverNotification	1.3.6.1.4.1.2879.2.1.3.2.0.2			This trap indicates that the active System Timing clock source has been switched to another source.
NTF sonusSystemTimingOscillatorActiveNotification	1.3.6.1.4.1.2879.2.1.3.2.0.3			This trap indicates that all external sources of System Timing have failed and that the current source of timing is the MTA's internal oscillator.
NTF sonusSystemTimingMTAFailedNotification	1.3.6.1.4.1.2879.2.1.3.2.0.4			This trap indicates that the MTA indicated has failed or been removed from the shelf.
NTF sonusSystemTimingMTAOperationalNotification	1.3.6.1.4.1.2879.2.1.3.2.0.6			This trap indicates that the specified MTA is now operational.
NTF sonusSystemTimingMTATotalFailureNotification	1.3.6.1.4.1.2879.2.1.3.2.0.7			This trap indicates that no MTA's are available for use to provide System Timing. They have either failed, been removed from service or been removed from the shelf. The shelf is no longer capable of being properly timed. Downstream Shelves or other equipment connected to this shelf's MITDC(Marlin Inter-chassis Timing Daisy Chain) may be affected.
sonusSystemTimingMIBNotificationsObjects	1.3.6.1.4.1.2879.2.1.3.2.1
SON sonusTimingSource	1.3.6.1.4.1.2879.2.1.3.2.1.1	SonusTimingSource	read-only
STR sonusTimingSource2	1.3.6.1.4.1.2879.2.1.3.2.1.2	SonusEventString	read-only

RFC description

Manages system timing sources, failover timing, and synchronization preferences for Sonus network platforms.

Start monitoring Sonus Networks softswitch, Sonus media gateway shelf (clock-reference/free-run alarm status) with a free 30-day trial of IPNetwork Monitor. Import MIBs, browse SNMP OIDs, create custom SNMP monitors, configure alerts, and monitor any SNMP-enabled network device from a single console.

Download SONUS-SYSTEM-TIMING-MIB

What Is SONUS-SYSTEM-TIMING-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description