AC-PM-PSTN-MIB

All MIBs › AC-PM-PSTN-MIB

Organization: AudioCodes Ltd

Last Updated: 2009-02-05

Category: Telephony and VoIP, Vendor: AudioCodes

Description: Provides performance monitoring counters for PSTN interfaces on AudioCodes gateways, covering trunk utilization, call success rates, and signaling errors.

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What Is AC-PM-PSTN-MIB?

AC-PM-PSTN-MIB is AudioCodes' performance-monitoring module for the PSTN-facing elements of its media gateways and session border controllers. It exposes interval-based performance counters for trunk/channel utilization, call attempt and success rates, and PSTN signaling errors, organized under a Configuration subtree (interval length and per-table thresholds) and a Data subtree (the monitored tables themselves). It is explicitly a monitoring MIB: administrators use it to track call-processing health over rolling intervals, following the documented convention that a value of -1 means the requested statistic is unsupported or not yet available for that interval. It complements AudioCodes' other management MIBs and general voice-gateway/PSTN interface standards rather than replacing them. It is deployed on AudioCodes VoIP gateways and SBCs terminating PSTN trunks, where operators need historical, interval-based visibility into trunk quality and signaling reliability. Engineers can download the AC-PM-PSTN-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in AC-PM-PSTN-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

AudioCodes media gateway
AudioCodes session border controller (SBC)

Monitoring Examples

No specific object names were sampled for this MIB; per the module description, an operator would poll the Data subtree's interval tables for trunk utilization and call-signaling-error counts over each configured period, using a run of -1 values to distinguish 'not yet measured' from a genuine zero, and treating a spike in signaling errors as a flag for a failing PSTN trunk.

What Can Be Monitored

PSTN trunk utilization
call attempt/success rate
signaling error counts
performance interval configuration and thresholds

Imported Objects

From AUDIOCODES-TYPES-MIB

acBoardMibs	OBJECT-IDENTITY
acGeneric	OBJECT-IDENTITY
acPerformance	OBJECT-IDENTITY
acProducts	OBJECT-IDENTITY
acRegistrations	OBJECT-IDENTITY
audioCodes	OBJECT-IDENTITY

From RFC1155-SMI

IpAddress

From SNMP-FRAMEWORK-MIB

SnmpAdminString

From SNMPv2-SMI

Counter32
Gauge32
Integer32
MODULE-IDENTITY
OBJECT-TYPE
Unsigned32
enterprises

From SNMPv2-TC

DateAndTime
DisplayString
TAddress
TEXTUAL-CONVENTION

How to Use in IPNetwork Monitor

Example using acPMTrunkUtilizationVolume OID:

Select an AudioCodes Mediant-series gateways/SBC as the target host to create a monitor — the SNMP service should be up and running on it. Click New Monitor, then check SNMP Custom on the Favorites tab, click Next, and confirm the host. On the next page, click Select... to open the built-in SNMP MIB Browser and type acPMTrunkUtilizationVolume into the Find box to locate it in the OID tree, selecting the specific row/instance you want to monitor since this is a table column, then select it and click OK. It reports the activity volume. On the monitor's Main parameters page you can set the target's SNMP port (default 161), credentials, polling interval, and other settings — see the SNMP Monitor help for details. On the State conditions and Alerting tabs, configure when the monitor should change state and trigger an alert; since this is a Counter32-type OID, Value bounds is the most useful condition here — trigger an alert if utilization approaches its capacity limit, since sustained high utilization often precedes congestion or degraded performance. Click Finish to create the monitor; you can adjust any parameter later.

OIDs

OID symbolic	OID numeric	Type	Access	Description
acPMPSTN	1.3.6.1.4.1.5003.10.10			The AC-PM-PSTN MIB offers performance monitoring For the PSTN related elements in Audiocodes' devices. The Configuration sub-tree is for configuring the interval Period length for the entire AC-PM-PSTN MIB, and the different tables' thresholds. The Data sub-tree presents the tables of monitored elements. Note - for the entire MIB the value (-1) means the value Asked for is either not supported or currently not relevant (this is for when values asked for are for intervals not yet recorded.
acPMPSTNConfiguration	1.3.6.1.4.1.5003.10.10.1
U32 acPMPSTNConfigurationPeriodLength	1.3.6.1.4.1.5003.10.10.1.1	Unsigned32	read-write	Length of monitoring intervals for entire MIB. Time is in minutes. Access: Instant.
INT acPMPSTNConfigurationResetTotalCounters	1.3.6.1.4.1.5003.10.10.1.2	INTEGER	read-write	Total-Counters Reset. To reset the total counters, set the value of this object to resetTotalCounters(2). Access: Instant.
acPMTrunkUtilizationAttributes	1.3.6.1.4.1.5003.10.10.1.31
U32 acPMTrunkUtilizationAttributesHighThreshold	1.3.6.1.4.1.5003.10.10.1.31.1	Unsigned32	read-write	High threshold. Access: Instant.
U32 acPMTrunkUtilizationAttributesLowThreshold	1.3.6.1.4.1.5003.10.10.1.31.2	Unsigned32	read-write	Low threshold. Access: Instant.
acPMPSTNChannelsAttributes	1.3.6.1.4.1.5003.10.10.1.32
U32 acPMPSTNChannelsAttributesInServiceHighThreshold	1.3.6.1.4.1.5003.10.10.1.32.1	Unsigned32	read-write	High threshold. Access: Instant.
U32 acPMPSTNChannelsAttributesInServiceLowThreshold	1.3.6.1.4.1.5003.10.10.1.32.2	Unsigned32	read-write	Low threshold. Access: Instant.
U32 acPMPSTNChannelsAttributesOutOfServiceHighThreshold	1.3.6.1.4.1.5003.10.10.1.32.3	Unsigned32	read-write	High threshold. Access: Instant.
U32 acPMPSTNChannelsAttributesOutOfServiceLowThreshold	1.3.6.1.4.1.5003.10.10.1.32.4	Unsigned32	read-write	Low threshold. Access: Instant.
U32 acPMPSTNChannelsAttributesInMaintenanceHighThreshold	1.3.6.1.4.1.5003.10.10.1.32.5	Unsigned32	read-write	High threshold. Access: Instant.
U32 acPMPSTNChannelsAttributesInMaintenanceLowThreshold	1.3.6.1.4.1.5003.10.10.1.32.6	Unsigned32	read-write	Low threshold. Access: Instant.
acPMPSTNData	1.3.6.1.4.1.5003.10.10.2
U32 acPMPSTNDataAcPMPSTNTimeFromStartOfInterval	1.3.6.1.4.1.5003.10.10.2.1	Unsigned32	read-only	The time in seconds since the start of the current interval. MIB specific.
acPMTrunkUtilizationTable	1.3.6.1.4.1.5003.10.10.2.21		not-accessible	Number of active channels per trunk (index: trunk number).
acPMTrunkUtilizationEntry	1.3.6.1.4.1.5003.10.10.2.21.1		not-accessible
U32 acPMTrunkUtilizationTrunkNum	1.3.6.1.4.1.5003.10.10.2.21.1.1	Unsigned32	not-accessible	Trunk number. 0 is the first trunk.
U32 acPMTrunkUtilizationInterval	1.3.6.1.4.1.5003.10.10.2.21.1.2	Unsigned32	not-accessible	Interval index. 0 - current period (incomplete monitoring - mid period). 1 - Last full period. 2 - One before last.
G32 acPMTrunkUtilizationVal	1.3.6.1.4.1.5003.10.10.2.21.1.3	Gauge32	read-only	Value of gauge or counter.
I32 acPMTrunkUtilizationAverage	1.3.6.1.4.1.5003.10.10.2.21.1.4	Integer32	read-only	Average value within the period time.
I32 acPMTrunkUtilizationMax	1.3.6.1.4.1.5003.10.10.2.21.1.5	Integer32	read-only	Maximum value within the period time.
I32 acPMTrunkUtilizationMin	1.3.6.1.4.1.5003.10.10.2.21.1.6	Integer32	read-only	Minimum value within the period time.
C32 acPMTrunkUtilizationVolumeEx	1.3.6.1.4.1.5003.10.10.2.21.1.7	Counter32	read-only	Activity volume.
I32 acPMTrunkUtilizationTimeBelowLowThreshold	1.3.6.1.4.1.5003.10.10.2.21.1.8	Integer32	read-only	Percent of interval time for which gauge is below what was determined as the low threshold.
I32 acPMTrunkUtilizationTimeBetweenThresholds	1.3.6.1.4.1.5003.10.10.2.21.1.9	Integer32	read-only	Percent of interval time for which gauge is above what was determined as the high threshold.
I32 acPMTrunkUtilizationTimeAboveHighThreshold	1.3.6.1.4.1.5003.10.10.2.21.1.10	Integer32	read-only	Percent of interval time for which gauge is between what were determined as the low and high thresholds.
I32 acPMTrunkUtilizationFullDayAverage	1.3.6.1.4.1.5003.10.10.2.21.1.11	Integer32	read-only	The average of full 24 hours.
I32 acPMTrunkUtilizationTotal	1.3.6.1.4.1.5003.10.10.2.21.1.12	Integer32	read-only	Total since last reset.
acPMPSTNTrunkActivitySecondsTable	1.3.6.1.4.1.5003.10.10.2.22		not-accessible	Counts activity seconds on the trunk.
acPMPSTNTrunkActivitySecondsEntry	1.3.6.1.4.1.5003.10.10.2.22.1		not-accessible
U32 acPMPSTNTrunkActivitySecondsTrunkNum	1.3.6.1.4.1.5003.10.10.2.22.1.1	Unsigned32	not-accessible	Trunk number. 0 is the first trunk.
U32 acPMPSTNTrunkActivitySecondsInterval	1.3.6.1.4.1.5003.10.10.2.22.1.2	Unsigned32	not-accessible	Interval index. 0 - current period (incomplete monitoring - mid period). 1 - Last full period. 2 - One before last.
G32 acPMPSTNTrunkActivitySecondsVal	1.3.6.1.4.1.5003.10.10.2.22.1.3	Gauge32	read-only	Value of gauge or counter.
I32 acPMPSTNTrunkActivitySecondsTotal	1.3.6.1.4.1.5003.10.10.2.22.1.4	Integer32	read-only	Total since last reset.
C32 acPMPSTNTrunkActivitySecondsVolume	1.3.6.1.4.1.5003.10.10.2.22.1.5	Counter32	read-only	Activity volume.
acPMPSTNChannels	1.3.6.1.4.1.5003.10.10.2.31
acPMPSTNNumOfChannelsInServiceTable	1.3.6.1.4.1.5003.10.10.2.31.1		not-accessible	Channels in service, per trunk.
acPMPSTNNumOfChannelsInServiceEntry	1.3.6.1.4.1.5003.10.10.2.31.1.1		not-accessible
U32 acPMPSTNNumOfChannelsInServiceTrunkNum	1.3.6.1.4.1.5003.10.10.2.31.1.1.1	Unsigned32	not-accessible	Trunk number. 0 is the first trunk.
U32 acPMPSTNNumOfChannelsInServiceInterval	1.3.6.1.4.1.5003.10.10.2.31.1.1.2	Unsigned32	not-accessible	Interval index. 0 - current period (incomplete monitoring - mid period). 1 - Last full period. 2 - One before last.
G32 acPMPSTNNumOfChannelsInServiceVal	1.3.6.1.4.1.5003.10.10.2.31.1.1.3	Gauge32	read-only	Value of gauge or counter.
I32 acPMPSTNNumOfChannelsInServiceAverage	1.3.6.1.4.1.5003.10.10.2.31.1.1.4	Integer32	read-only	Average value within the period time.
I32 acPMPSTNNumOfChannelsInServiceMax	1.3.6.1.4.1.5003.10.10.2.31.1.1.5	Integer32	read-only	Maximum value within the period time.
I32 acPMPSTNNumOfChannelsInServiceMin	1.3.6.1.4.1.5003.10.10.2.31.1.1.6	Integer32	read-only	Minimum value within the period time.
C32 acPMPSTNNumOfChannelsInServiceVolume	1.3.6.1.4.1.5003.10.10.2.31.1.1.7	Counter32	read-only	Activity volume.
acPMPSTNNumOfChannelsOutOfServiceTable	1.3.6.1.4.1.5003.10.10.2.31.2		not-accessible	Channels out of service, per trunk.
acPMPSTNNumOfChannelsOutOfServiceEntry	1.3.6.1.4.1.5003.10.10.2.31.2.1		not-accessible
U32 acPMPSTNNumOfChannelsOutOfServiceTrunkNum	1.3.6.1.4.1.5003.10.10.2.31.2.1.1	Unsigned32	not-accessible	Trunk number. 0 is the first trunk.
U32 acPMPSTNNumOfChannelsOutOfServiceInterval	1.3.6.1.4.1.5003.10.10.2.31.2.1.2	Unsigned32	not-accessible	Interval index. 0 - current period (incomplete monitoring - mid period). 1 - Last full period. 2 - One before last.
G32 acPMPSTNNumOfChannelsOutOfServiceVal	1.3.6.1.4.1.5003.10.10.2.31.2.1.3	Gauge32	read-only	Value of gauge or counter.
I32 acPMPSTNNumOfChannelsOutOfServiceAverage	1.3.6.1.4.1.5003.10.10.2.31.2.1.4	Integer32	read-only	Average value within the period time.
I32 acPMPSTNNumOfChannelsOutOfServiceMax	1.3.6.1.4.1.5003.10.10.2.31.2.1.5	Integer32	read-only	Maximum value within the period time.
I32 acPMPSTNNumOfChannelsOutOfServiceMin	1.3.6.1.4.1.5003.10.10.2.31.2.1.6	Integer32	read-only	Minimum value within the period time.
C32 acPMPSTNNumOfChannelsOutOfServiceVolume	1.3.6.1.4.1.5003.10.10.2.31.2.1.7	Counter32	read-only	Activity volume.
acPMPSTNNumOfChannelsInMaintenanceTable	1.3.6.1.4.1.5003.10.10.2.31.3		not-accessible	Channels in maintenance status (not in-service), per trunk.
acPMPSTNNumOfChannelsInMaintenanceEntry	1.3.6.1.4.1.5003.10.10.2.31.3.1		not-accessible
U32 acPMPSTNNumOfChannelsInMaintenanceTrunkNum	1.3.6.1.4.1.5003.10.10.2.31.3.1.1	Unsigned32	not-accessible	Trunk number. 0 is the first trunk.
U32 acPMPSTNNumOfChannelsInMaintenanceInterval	1.3.6.1.4.1.5003.10.10.2.31.3.1.2	Unsigned32	not-accessible	Interval index. 0 - current period (incomplete monitoring - mid period). 1 - Last full period. 2 - One before last.
G32 acPMPSTNNumOfChannelsInMaintenanceVal	1.3.6.1.4.1.5003.10.10.2.31.3.1.3	Gauge32	read-only	Value of gauge or counter.
I32 acPMPSTNNumOfChannelsInMaintenanceAverage	1.3.6.1.4.1.5003.10.10.2.31.3.1.4	Integer32	read-only	Average value within the period time.
I32 acPMPSTNNumOfChannelsInMaintenanceMax	1.3.6.1.4.1.5003.10.10.2.31.3.1.5	Integer32	read-only	Maximum value within the period time.
I32 acPMPSTNNumOfChannelsInMaintenanceMin	1.3.6.1.4.1.5003.10.10.2.31.3.1.6	Integer32	read-only	Minimum value within the period time.
C32 acPMPSTNNumOfChannelsInMaintenanceVolume	1.3.6.1.4.1.5003.10.10.2.31.3.1.7	Counter32	read-only	Activity volume.

RFC description

Vendor-private MIB for AC power management and PSTN (Public Switched Telephone Network) integration.

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Download AC-PM-PSTN-MIB