Nortel-MsCarrier-MscPassport-DisdnETSIMIB

MIB Reference — IPNetwork Monitor · Updated October 06, 2026

All MIBs › Nortel-MsCarrier-MscPassport-DisdnETSIMIB

Category: ISDN, Nortel MsCarrier MscPassport

Description: Defines SNMP objects for ETSI-variant Digital ISDN interface signaling on Nortel MsCarrier MscPassport switches.

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What Is Nortel-MsCarrier-MscPassport-DisdnETSIMIB?

This Nortel MsCarrier MscPassport MIB provides SNMP management objects for the ETSI variant of Digital ISDN signaling channels on the Passport switch, mirroring the structure of the Magellan Passport QSIG MIB but targeting standard ETSI ISDN (rather than QSIG) trunk signaling. It exposes signaling channel provisioning tables and Layer 2 data-link parameters including the T200, T23 and N200 protocol timers that govern ISDN Q.921 link setup and retransmission. As with related signaling MIBs in this family, monitoring value is centered on configuration/row-status verification of signaling channels and their Layer-2 timer settings rather than hardware environmental data, since this module carries no CPU, memory or temperature objects. It depends on ETSI/ITU-T ISDN signaling standards (Q.921/Q.931) for its underlying protocol semantics, layered on Nortel's proprietary Passport component model. It is typically deployed where a Nortel MsCarrier Passport switch terminates ETSI-standard ISDN PRI/BRI trunks for European carrier or enterprise voice/data services, and engineers typically load its object tree into a Nortel-MsCarrier-MscPassport-DisdnETSIMIB MIB Browser session to review the full signaling channel and timer configuration.

IPNetwork Monitor allows you to monitor SNMP objects defined in Nortel-MsCarrier-MscPassport-DisdnETSIMIB. 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

  • Nortel MsCarrier MscPassport switch
  • ISDN PRI/BRI trunk interface

Monitoring Examples

An operator would poll mscDataSigChanEtsiRowStatusTable/mscDataSigChanEtsiRowStatusEntry to confirm an ISDN signaling channel remains active, and check mscDataSigChanEtsiL2Table for the configured mscDataSigChanEtsiT200, mscDataSigChanEtsiT23 and mscDataSigChanEtsiN200 values against the connected PBX or exchange's ISDN configuration. An unexpected row-status change or timer mismatch typically explains a signaling channel that repeatedly fails to establish Layer 2 link. As with the QSIG MIB, there are no traffic counters, so troubleshooting relies on configuration verification.

What Can Be Monitored

  • ISDN signaling channel row status
  • Layer 2 link timers (T200, T23, N200)
  • signaling channel storage type
  • signaling channel provisioning index
Imported Objects

From Nortel-MsCarrier-MscPassport-DataIsdnMIB

mscDataSigChanOBJECT-IDENTITY
mscDataSigChanIndexOBJECT-TYPE

From Nortel-MsCarrier-MscPassport-StandardTextualConventionsMIB

DisplayString
RowStatus
StorageType
Unsigned32

From Nortel-MsCarrier-MscPassport-UsefulDefinitionsMIB

mscPassportMIBsOBJECT-IDENTITY

From RFC-1212

OBJECT-TYPE
OIDs

RFC description

Manages ETSI digital signaling channel configurations on Nortel MsCarrier carrier equipment.

Start monitoring Nortel MsCarrier MscPassport switch / ISDN PRI/BRI trunk interface (ETSI signaling) 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.

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