AC-PSTN-MIB :: acTrunkClockMaster

MIB Reference — IPNetwork Monitor · Updated September 14, 2026

All MIBsAC-PSTN-MIBacTrunkClockMaster

acTrunkClockMaster

Module: AC-PSTN-MIB

OID (symbolic): AC-PSTN-MIB::acTrunkClockMaster

OID (numeric): 1.3.6.1.4.1.5003.9.10.9.1.1.1.1.1.4

Node type: OBJECT-TYPE

Type: INTEGER

Access: read-write

Description: Used to select the trunk clock source.

0 = acCLOCK_MASTER_OFF (clock recovered from the line) 1 = acCLOCK_MASTER_ON (the trunk clock source is provided by the internal/TDM bus clock source depending on the parameter TDM Bus Clock Source). Access: Online. AC INI-Param: CLOCKMASTER

What is acTrunkClockMaster?

Selects whether trunk clock timing derives from the incoming line signal or internal/TDM bus oscillator. Proper clock synchronization prevents frame slips and voice quality degradation on synchronous telecom circuits. Setting to 1 forces the internal clock source, useful when the line signal is unstable or absent.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.4.1.5003.9.10.9.1.1.1.1.1.4
snmpwalk -v2c -c public <target> AC-PSTN-MIB::acTrunkClockMaster

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.4.1.5003.9.10.9.1.1.1.1.1.4.1
snmpget -v2c -c public <target> AC-PSTN-MIB::acTrunkClockMaster.1

Set instance 1 (SNMPv2c):

snmpset -v2c -c private <target> 1.3.6.1.4.1.5003.9.10.9.1.1.1.1.1.4.1 i <value>

Start monitoring AudioCodes Mediant-series gateways with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the AC-PSTN-MIB::acTrunkClockMaster OID value, configure state conditions and alerts, and monitor any AudioCodes Mediant-series gateways from a single console.

OID Breakdown

Upper-level ancestors (9 from the standard OID tree / other modules)
Numeric OIDNameModule
1isoLANART-AGENT
1.3orgAirPair-MIB
1.3.6dodAirPair-MIB
1.3.6.1internetAirPair-MIB
1.3.6.1.4privateAirPair-MIB
1.3.6.1.4.1enterprisesAirPair-MIB
1.3.6.1.4.1.5003audioCodesAC-ATM-MIB
1.3.6.1.4.1.5003.9acProductsAC-ATM-MIB
1.3.6.1.4.1.5003.9.10acBoardMibsAC-ATM-MIB
Numeric OIDNameModule
1.3.6.1.4.1.5003.9.10.9acPSTNAC-PSTN-MIB
1.3.6.1.4.1.5003.9.10.9.1acPSTNConfigurationAC-PSTN-MIB
1.3.6.1.4.1.5003.9.10.9.1.1acTrunkConfigAC-PSTN-MIB
1.3.6.1.4.1.5003.9.10.9.1.1.1acTrunkAC-PSTN-MIB
1.3.6.1.4.1.5003.9.10.9.1.1.1.1acTrunkTableAC-PSTN-MIB
1.3.6.1.4.1.5003.9.10.9.1.1.1.1.1acTrunkEntryAC-PSTN-MIB
1.3.6.1.4.1.5003.9.10.9.1.1.1.1.1.4acTrunkClockMasterAC-PSTN-MIB