TN-MGMT-TDM-MIB

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Category: TDM and Serial Interfaces, Transition Networks Media Converters

Description: Manages Transition Networks TDM port configuration and circuit status.

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What Is TN-MGMT-TDM-MIB?

This Transition Networks MIB manages TDM (Time Division Multiplexing) circuit interfaces, such as T1/E1 and DS3/E3 ports, on TN media conversion/gateway devices. It exposes per-port TDM configuration data including line type, connector type, line build-out, and alarm indication signal (AIS) settings. It supports monitoring of hardware/circuit status by exposing AIS transmit state and alarm indication signal conditions, which reveal upstream/downstream circuit faults on the TDM span, alongside long-haul and line-buildout settings that affect signal integrity over distance. It is closely tied to established TDM/telecom standards (T1/E1, DS3/E3 line specifications) that define the AIS and line-buildout semantics it models. It is typically deployed on Transition Networks TDM-over-Ethernet gateways or media converters bridging legacy TDM circuits into Ethernet/IP networks. Network engineers evaluating or troubleshooting this functionality can download the TN-MGMT-TDM-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in TN-MGMT-TDM-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

Transition Networks TDM-over-Ethernet gateways/media converters

Monitoring Examples

An operator would poll the tnIfTDMTable (tnIfTDMEntry) for a given circuit to check tnIfTDMAlarmIndicationSignal and tnIfTDMAISTransmit — an active AIS condition indicates the far-end TDM circuit has detected a fault and is signaling all-ones upstream. Reviewing tnIfTDMType, tnIfTDMT1E1LineBuildout, or tnIfTDMDS3E3LineBuildout alongside tnIfTDMLongHaul helps confirm the port is provisioned correctly for the physical cable distance. The related tnIfTDMExtTable provides additional extended attributes for the same circuit.

What Can Be Monitored

AIS (alarm indication signal) state
TDM line type and buildout settings
long-haul configuration
connector type
per-circuit TDM alarms

Imported Objects

From ENTITY-MIB

entPhysicalIndex

OBJECT-TYPE

From IF-MIB

InterfaceIndex
InterfaceIndexOrZero

From SNMPv2-SMI

MODULE-IDENTITY
OBJECT-IDENTITY
enterprises

From SNMPv2-TC

DisplayString
TimeStamp
TruthValue

From TN-MGMT-MIB

tnInterfaceMgmt	OBJECT-IDENTITY
tnMgmtNotifications	OBJECT-IDENTITY

From TRANSITION-TC

CpsConnector

OIDs

OID symbolic	OID numeric	Type	Access	Description
NTF tnIfTDMAlarmIndicationSignalEvt	1.3.6.1.4.1.868.2.5.3.0.6			A alarm indication signal event is sent when there is a warning or alarm on TDM port.
tnIfTDMTable	1.3.6.1.4.1.868.2.5.3.1.2.6		not-accessible	This table has entries for the TDM attributes.
tnIfTDMEntry	1.3.6.1.4.1.868.2.5.3.1.2.6.1		not-accessible	A entry in the table represents TDM attributes.
INT tnIfTDMAISTransmit	1.3.6.1.4.1.868.2.5.3.1.2.6.1.1	INTEGER	read-write	Transmit AIS(All Ones/BLUE) on Fiber(Copper) as an error signal when Copper interface(Fiber Interface) is down. When this error signal is transmitted, the AIS of the device on the other end is activated, if supported
INT tnIfTDMAISFormat	1.3.6.1.4.1.868.2.5.3.1.2.6.1.2	INTEGER	read-write	Transmit AIS(All Ones:1111... sequence/BLUE:0101... sequence) on Fiber(Copper) as an error signal for DS3/E3/STS-1 port
INT tnIfTDMAlarmIndicationSignal	1.3.6.1.4.1.868.2.5.3.1.2.6.1.3	INTEGER	read-only	When equal to alarm(1), this means that the other end has TAOS enabled and is currently transmitting an alarm condition. when equal to normal, this means no alarm.
INT tnIfTDMLongHaul	1.3.6.1.4.1.868.2.5.3.1.2.6.1.4	INTEGER	read-only	This variable indicates the current position of the remote device's Short/Long haul configuration switch.
INT tnIfTDMType	1.3.6.1.4.1.868.2.5.3.1.2.6.1.5	INTEGER	read-only	This variable indicates the type of the current device. T1=1.544MHz; E1=2.048MHz;E3 = 34.4Mb/s; DS3 = 44.7Mb/s; STS-1 = 51.8Mb/s
INT tnIfTDMT1E1LineBuildout	1.3.6.1.4.1.868.2.5.3.1.2.6.1.6	INTEGER	read-only	The characteristics T1E1 card's copper interface.
INT tnIfTDMDS3E3LineBuildout	1.3.6.1.4.1.868.2.5.3.1.2.6.1.7	INTEGER	read-write	The characteristics of DS3E3 card's copper interface.
CPS tnIfTDMConnectorType	1.3.6.1.4.1.868.2.5.3.1.2.6.1.8	CpsConnector	read-only	The style of connector built into this device.
tnIfTDMExtTable	1.3.6.1.4.1.868.2.5.3.1.2.9		not-accessible	This table has entries for the Extral TDM attributes.
tnIfTDMExtEntry	1.3.6.1.4.1.868.2.5.3.1.2.9.1		not-accessible	A entry in the table represents Extral TDM attributes.
INT tnIfTDMExtId	1.3.6.1.4.1.868.2.5.3.1.2.9.1.1	INTEGER	not-accessible	An index that uniquely identifies an entry in the tnIfTDMExtTable. This index permits the same interface to have several different channels
INT tnIfTDMExtAISTrasmit	1.3.6.1.4.1.868.2.5.3.1.2.9.1.2	INTEGER	read-write	Transmit AIS(All Ones/BLUE) on the Channel as an error signal when Copper interface(Fiber Interface) is down. When this error signal is transmitted, the AIS of the device on the other end is activated, if supported
INT tnIfTDMExtAISFormat	1.3.6.1.4.1.868.2.5.3.1.2.9.1.3	INTEGER	read-write	Transmit AIS(All Ones:1111... sequence/BLUE:0101... sequence) on the Channel as an error signal for the pair port
INT tnIfTDMExtAlarmIndicationSingnal	1.3.6.1.4.1.868.2.5.3.1.2.9.1.4	INTEGER	read-only	When equal to alarm(1), this means that the other end of Channel has AIS enabled and is currently transmitting an alarm condition. when equal to normal(2), this means no alarm. when equal to yellow(3), this means the other end of Channel has YELLOW enabled and is currently transmitting a YELLOW condition. when equal to red(4), this means the local end of Channel has detect a LOS on receiver.
INT tnIfTDMExtLoopback	1.3.6.1.4.1.868.2.5.3.1.2.9.1.5	INTEGER	read-write	This variable indicates the loopback state of the current Channel
INT tnIfTDMExtYellowTrasmit	1.3.6.1.4.1.868.2.5.3.1.2.9.1.6	INTEGER	read-write	Transmit Yellow on the Channel as an error signal when Local Copper Interface is down. When this error signal is transmitted.
tnIfTDM2Table	1.3.6.1.4.1.868.2.5.3.1.2.10		not-accessible	This table has entries for the TDM 2 attributes.
tnIfTDM2Entry	1.3.6.1.4.1.868.2.5.3.1.2.10.1		not-accessible	A entry in the table represents the TDM 2 attributes.
INT tnIfTDM2FiberLineNum	1.3.6.1.4.1.868.2.5.3.1.2.10.1.1	INTEGER	read-only	This variable is indicate the links number of the Fiber Port, maybe single line or dual line
INT tnIfTDM2FiberActiveLine	1.3.6.1.4.1.868.2.5.3.1.2.10.1.2	INTEGER	read-write	This variable is indicate the active fiber link, if a multi-fiber line is used for hardware redundancy
INT tnIfTDM2FiberRevertive	1.3.6.1.4.1.868.2.5.3.1.2.10.1.3	INTEGER	read-write	This variable is used to decide whether to revertive the fiber link to primary link if applicable
INT tnIfTDM2FiberPrimaryLinkStatus	1.3.6.1.4.1.868.2.5.3.1.2.10.1.4	INTEGER	read-only	This variable indicates the fiber port primary line link status
INT tnIfTDM2FiberSecondaryLinkStatus	1.3.6.1.4.1.868.2.5.3.1.2.10.1.5	INTEGER	read-only	This variable indicates the fiber port secondary line link status
INT tnIfTDM2InBandLPEnable	1.3.6.1.4.1.868.2.5.3.1.2.10.1.6	INTEGER	read-write	This variable indicates whether In-band Loopback detect is enabled
STR tnIfTDM2InBandLPStartPatten	1.3.6.1.4.1.868.2.5.3.1.2.10.1.7	DisplayString	read-write	This binary string is used to set the In-band Loopback start Patten, such as 11000 string
STR tnIfTDM2InBandLPStopPatten	1.3.6.1.4.1.868.2.5.3.1.2.10.1.8	DisplayString	read-write	This binary string is used to set the In-band Loopback stop Patten, such as 11100 string
INT tnIfTDM2InBandPEERLPEnable	1.3.6.1.4.1.868.2.5.3.1.2.10.1.9	INTEGER	read-write	This variable indicates whether the PEER interface In-band Loopback detect is enabled
STR tnIfTDM2InBandPEERLPStartPatten	1.3.6.1.4.1.868.2.5.3.1.2.10.1.10	DisplayString	read-write	This binary string is used to set the PEER interface In-band Loopback start Patten, such as 11000 string
STR tnIfTDM2InBandPEERLPStopPatten	1.3.6.1.4.1.868.2.5.3.1.2.10.1.11	DisplayString	read-write	This binary string is used to set the PEER interface In-band Loopback stop Patten, such as 11100 string
INT tnIfTDM2InBandLPTimeoutEnable	1.3.6.1.4.1.868.2.5.3.1.2.10.1.12	INTEGER	read-write	This variable indicates whether the In-band Loopback timeout watchdog is enabled
INT tnIfTDM2InBandLPTimeoutCount	1.3.6.1.4.1.868.2.5.3.1.2.10.1.13	INTEGER	read-write	This variable is used to set the In-band Loopback timeout watchdog value, the unit is minute
INT tnIfTDM2InBandPEERLPTimeoutEnable	1.3.6.1.4.1.868.2.5.3.1.2.10.1.14	INTEGER	read-write	This variable indicates whether the Peer In-band Loopback timeout watchdog is enabled
INT tnIfTDM2InBandPEERLPTimeoutCount	1.3.6.1.4.1.868.2.5.3.1.2.10.1.15	INTEGER	read-write	This variable is used to set the Peer In-band Loopback timeout watchdog value, the unit is minute

RFC description

Vendor-private MIB for managing Time Division Multiplexing (TDM) over packet-switched networks (PSNs).

Start monitoring Transition Networks TDM-over-Ethernet gateways/media converters (T1/E1/DS3/E3 line/AIS 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 TN-MGMT-TDM-MIB

What Is TN-MGMT-TDM-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description