HDR2-MIB

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Category: Device Management, Vendor: HDR

Description: Provides SNMP management objects for HDR2 series network devices including status and performance counters.

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What Is HDR2-MIB?

HDR2-MIB is a vendor extension module covering configuration of HDR2-style channel-associated-signaling (CAS) trunk interfaces, exposing per-channel telephony signaling parameters such as register signaling type, line signaling type, A-law/mu-law companding selection, and digit-collection timers. The usr/common object branches among its sample objects suggest it originates from a legacy telephony/access-server vendor in the U.S. Robotics/3Com lineage rather than a modern IETF standard. Its data is entirely configuration-oriented rather than hardware-health-oriented: the hdr2CfgTable exposes per-channel signaling and addressing settings, so its monitoring value is confirming that each trunk channel is provisioned with the expected signaling type and companding law and detecting configuration drift across channels. It does not appear to build on a broader standard voice MIB and instead defines its own private structure for this specific chassis family. It is typically deployed on legacy digital access/telephony chassis carrying E1/T1 trunks with CAS signaling in carrier or enterprise voice-access environments. Engineers can download the HDR2-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in HDR2-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

legacy digital access/telephony chassis (U.S. Robotics/3Com HDR-family)
CAS-signaled E1/T1 trunk interface cards

Monitoring Examples

The hdr2CfgTable, indexed by hdr2CfgIndex, exposes per-channel objects like hdr2CfgRegSigType and hdr2CfgLineSigType to show which signaling protocol variant is active on a channel, and hdr2CfgAlawMulaw to show the companding law in use. An administrator troubleshooting one-way audio or dropped calls on a specific trunk channel would poll hdr2CfgForcedRel and hdr2CfgLastBDigTout to check forced-release and digit-timeout behavior on that channel. A channel reporting an unexpected hdr2CfgLineSigType relative to its peers would indicate a provisioning mismatch likely responsible for call-setup failures.

What Can Be Monitored

per-channel register signaling type
per-channel line signaling type
A-law/Mu-law companding setting
digit-collection timeout
forced release configuration
address-complete indication

Imported Objects

From RFC-1212

OBJECT-TYPE

From RFC1155-SMI

enterprises

From RFC1213-MIB

DisplayString

OIDs

OID symbolic	OID numeric	Type	Access	Description
common	1.3.6.1.4.1.429.4
hdr2	1.3.6.1.4.1.429.4.48
hdr2Cfg	1.3.6.1.4.1.429.4.48.1
INT hdr2CfgActBTout	1.3.6.1.4.1.429.4.48.1.1.1.33	INTEGER	read-write	this object determines action to be taken on last B-digit timeout.
INT hdr2CfgAddrComplete	1.3.6.1.4.1.429.4.48.1.1.1.6	INTEGER	read-write	On reception of this signal it is assumed that the required number of B party digits are received. It can hold the values ranging from A1 to A15. It depends on country specification.
INT hdr2CfgAlawMulaw	1.3.6.1.4.1.429.4.48.1.1.1.8	INTEGER	read-write	This object is configuration to apply A Law(E1) or MuLaw(T1) Companding.
INT hdr2CfgAnumBnum	1.3.6.1.4.1.429.4.48.1.1.1.12	INTEGER	read-write	During Bit oriented Register Signaling , after number of B party ( called party or DNIS) digits have been received, the A party (calling or ANI) digits are requested , provided A party (ANI) request is enabled. Otherwise this parameter is ignored.
INT hdr2CfgAnumIden	1.3.6.1.4.1.429.4.48.1.1.1.3	INTEGER	read-write	This parameter enables or disables the collection of calling party ( A party or ANI) phone numbers when used with R2MFC signaling type.
INT hdr2CfgANumNAv	1.3.6.1.4.1.429.4.48.1.1.1.26	INTEGER	read-write	THis object interpret I-12 as A-number not available.
INT hdr2CfgANumQry	1.3.6.1.4.1.429.4.48.1.1.1.25	INTEGER	read-write	This object determines whether or not an extra MFC cycle is used before to the A-number to indicate whether an A-number is available,using III-1 for yes and III-0 for no.
INT hdr2CfgANumReq	1.3.6.1.4.1.429.4.48.1.1.1.27	INTEGER	read-write	this object backward register signal used to request transmission of the next A-number digit Frequently this is the same as the signal used to request transmission of the call category and A-number .
INT hdr2CfgBlkToBlk	1.3.6.1.4.1.429.4.48.1.1.1.21	INTEGER	read-write	This object determines whether or not a blocking signals received in the idle state is automatically responded to with a transmitted block signals.
INT hdr2CfgBNumLen	1.3.6.1.4.1.429.4.48.1.1.1.32	INTEGER	read-write	this object determines the number of B-number digits to accept beore sending the 'address complete'signal, provided the 'end of B_number'signal is not received first.
INT hdr2CfgBNumNFnd	1.3.6.1.4.1.429.4.48.1.1.1.35	INTEGER	read-write	this object determines the action on B-Number not found in teh DNIS handling table.
INT hdr2CfgClrCall	1.3.6.1.4.1.429.4.48.1.1.1.24	INTEGER	read-write	This object determines whether an active call is cleared when an unexpected line signal is received, or the line signal is ignored as currently implemented.
INT hdr2CfgClrFwd	1.3.6.1.4.1.429.4.48.1.1.1.28	INTEGER	read-write	This object repeatd size/clear-forward sequence is sent to startup to try to provoke a response from attached equipment.
INT hdr2CfgDelayAns	1.3.6.1.4.1.429.4.48.1.1.1.31	INTEGER	read-write	this object determines the delay between the end of addressing and transmission of the answer signal.
INT hdr2CfgDelayLos	1.3.6.1.4.1.429.4.48.1.1.1.22	INTEGER	read-write	This object determines the required duration of the LOS state before active calls are dropped and the signalling is reinitialised. Restoration of signal during this period allows calls to continue.
STR hdr2CfgDumANum	1.3.6.1.4.1.429.4.48.1.1.1.41	DisplayString	read-write	this object default A-number for outgoing calls in case none is supplied during call initiation.
INT hdr2CfgEndANum	1.3.6.1.4.1.429.4.48.1.1.1.42	INTEGER	read-write	This object forward register signal used to indicate that no more a_number digits are avaible.default=iii-15.
INT hdr2CfgEndBparty	1.3.6.1.4.1.429.4.48.1.1.1.7	INTEGER	read-write	This indicates whether I15 is will be received as an indication for End of B party number or not. If enabled, at the end of B party number , this I15 signal is received informing that B party number is completed.
hdr2CfgEntry	1.3.6.1.4.1.429.4.48.1.1.1		not-accessible	Configuration parameters for the E1/R2 module.
INT hdr2CfgForcedRel	1.3.6.1.4.1.429.4.48.1.1.1.4	INTEGER	read-write	In E1/ R2 ,Forced Release Line signal will be sent only in case of this parameter is enabled. This signal is optional.
INT hdr2CfgIncomingCpc	1.3.6.1.4.1.429.4.48.1.1.1.18	INTEGER	read-write	This object determines the default calling party category to be assumed when none is supplied for an incoming call.
INT hdr2CfgIndex	1.3.6.1.4.1.429.4.48.1.1.1.1	INTEGER	read-only	The index which uniquely identifies the Hiper E1/R2 CARD to which this entry is applicable.
INT hdr2CfgInGlare	1.3.6.1.4.1.429.4.48.1.1.1.23	INTEGER	read-write	This object determines whether the incoming call is accepted and the outgoing call is dropped in a glare condition, or both calls are dropped as currently implemented.
INT hdr2CfgInSubFree	1.3.6.1.4.1.429.4.48.1.1.1.34	INTEGER	read-write	this object backward register signal used to indicate acceptance of an incoming call.
INT hdr2CfgLastBDigTout	1.3.6.1.4.1.429.4.48.1.1.1.5	INTEGER	read-write	This parameter decides, after how many milliseconds of silence during the B digit reception, the B party number is assumed as completed.
INT hdr2CfgLineDirection	1.3.6.1.4.1.429.4.48.1.1.1.15	INTEGER	read-write	This object sets the direction of the channels on the span line.
INT hdr2CfgLineSigType	1.3.6.1.4.1.429.4.48.1.1.1.9	INTEGER	read-write	This object defines the type of Line Signaling for Bit Oriented Signaling.
INT hdr2CfgOutCatAnalog	1.3.6.1.4.1.429.4.48.1.1.1.43	INTEGER	read-write	This object forward signals used to indicate the call category for outgoing calls.
INT hdr2CfgOutCatDigital	1.3.6.1.4.1.429.4.48.1.1.1.44	INTEGER	read-write
INT hdr2CfgOutCatMaintenance	1.3.6.1.4.1.429.4.48.1.1.1.46	INTEGER	read-write
INT hdr2CfgOutCatTest	1.3.6.1.4.1.429.4.48.1.1.1.45	INTEGER	read-write
INT hdr2CfgPersistentOverride	1.3.6.1.4.1.429.4.48.1.1.1.16	INTEGER	read-write	This object allows the recieved line signal persistence (debounce time).
INT hdr2CfgPIClrBck	1.3.6.1.4.1.429.4.48.1.1.1.30	INTEGER	read-write	This object determines whether or not a repeated release/Seize-ack sequence is sent while attempting to clear anincoming call.
INT hdr2CfgProjID	1.3.6.1.4.1.429.4.48.1.1.1.10	INTEGER	read-write	Depending on this parameter, country dependent or project dependent parameters are updated. Each and every parameter has a set of variables to be initialized.
INT hdr2CfgRegSigStatus	1.3.6.1.4.1.429.4.48.1.1.1.19	INTEGER	read-write	This object determines whether or not register signalling is used for incoming and outgoing calls for R2.
INT hdr2CfgRegSigType	1.3.6.1.4.1.429.4.48.1.1.1.2	INTEGER	read-write	This object Defines the type of Register Signaling used for Bit Oriented Signaling.
INT hdr2CfgRelGuard	1.3.6.1.4.1.429.4.48.1.1.1.29	INTEGER	read-write	This object is duration for which Release Guard signal is sent.
INT hdr2CfgSeizeAck	1.3.6.1.4.1.429.4.48.1.1.1.11	INTEGER	read-write	It defines whether seize acknowledge signal is used or not for Bit Oriented Signaling.
INT hdr2CfgSndBNumN	1.3.6.1.4.1.429.4.48.1.1.1.36	INTEGER	read-write	this object backward signal requesting retransmission of curent B-number digit for outgoing calls.
INT hdr2CfgSndBNumN1	1.3.6.1.4.1.429.4.48.1.1.1.37	INTEGER	read-write	this object backward signal requesting transmission of B-number digit N-1 for outgoing calls.
INT hdr2CfgSndBNumN2	1.3.6.1.4.1.429.4.48.1.1.1.38	INTEGER	read-write	this object backward signal requesting transimission of B-number digit N-2 for outgoing calls.
INT hdr2CfgSndBNumN3	1.3.6.1.4.1.429.4.48.1.1.1.39	INTEGER	read-write	this object backward signal requesting transimission of B-number digit N-3 for outgoing calls.
INT hdr2CfgSndCallingPtyCatgy	1.3.6.1.4.1.429.4.48.1.1.1.14	INTEGER	read-write	This register Signal requests the calling ( A PARTY's ) category.
INT hdr2CfgSndFBNum	1.3.6.1.4.1.429.4.48.1.1.1.40	INTEGER	read-write	this object determines whether or not the I-15 'end of B-number' signal is used for outgoing calls.
INT hdr2CfgSubBusy	1.3.6.1.4.1.429.4.48.1.1.1.13	INTEGER	read-write	This object is used in case of subscirber busy.
hdr2CfgTable	1.3.6.1.4.1.429.4.48.1.1		not-accessible	A table containing the configuration parameters for the Hiper E1/R2 Card.
INT hdr2CfgUnusedAbcd	1.3.6.1.4.1.429.4.48.1.1.1.20	INTEGER	read-write	This object determines the bit pattern transmitted for whichever of the ABCD bits are not used for the selected line signalling scheme. This means CD for R2 Digital and P7, and BCD for R2 E&M.
INT hdr2CfgWrongNumber	1.3.6.1.4.1.429.4.48.1.1.1.17	INTEGER	read-write	This object is the backward register signal used to indicate that an invalid number has been dialed.
hdr2InCatMap	1.3.6.1.4.1.429.4.48.2
INT hdr2InCatMapCallType	1.3.6.1.4.1.429.4.48.2.1.1.3	INTEGER	read-write	This object determines the meaning of forward call category for incoming calls.
hdr2InCatMapEntry	1.3.6.1.4.1.429.4.48.2.1.1		not-accessible	Configuration parameters for the E1/R2 module.
INT hdr2InCatMapIndex	1.3.6.1.4.1.429.4.48.2.1.1.1	INTEGER	read-only	The index which uniquely identifies the Hiper E1/R2 Module to which this entry is applicable.
INT hdr2InCatMapSigNum	1.3.6.1.4.1.429.4.48.2.1.1.2	INTEGER	read-only	This object is the index for one of 15 possible forward call category signals for imcoming calls.
hdr2InCatMapTable	1.3.6.1.4.1.429.4.48.2.1		not-accessible	A table containing in cat map configurations for the Hiper E1/R2 Module.
hdr2Pte	1.3.6.1.4.1.429.4.48.3
hdr2PteEntry	1.3.6.1.4.1.429.4.48.3.1.1		not-accessible	Trap Enable Configuration parameters for the E1/R2 module.
INT hdr2PteIndex	1.3.6.1.4.1.429.4.48.3.1.1.1	INTEGER	read-only	The index which uniquely identifies the Hiper E1/R2 Module to which this entry is applicable.
INT hdr2PteMultiFrame	1.3.6.1.4.1.429.4.48.3.1.1.2	INTEGER	read-write	Enable the generation of an SNMP trap upon detection of a Multi-Frame Alignment condition on the specified DS1.
INT hdr2PteMultiFrameClr	1.3.6.1.4.1.429.4.48.3.1.1.3	INTEGER	read-write	Enable the generation of an SNMP trap upon detection of clearing a Multi-Frame Alignment condition on the specified DS1.
INT hdr2PteRemMultiFrame	1.3.6.1.4.1.429.4.48.3.1.1.4	INTEGER	read-write	Enable the generation of an SNMP trap upon detection of a Remote Multi-Frame Alignment condition on the specified DS1.
INT hdr2PteRemMultiFrameClr	1.3.6.1.4.1.429.4.48.3.1.1.5	INTEGER	read-write	Enable the generation of an SNMP trap upon detection of clearing a Remote Multi-Frame Alignment condition on the specified DS1.
hdr2PteTable	1.3.6.1.4.1.429.4.48.3.1		not-accessible	A table containing the Positron Trap Enable configurations for the Hiper E1/R2 Module.
hdr2Te	1.3.6.1.4.1.429.4.48.4
hdr2TeEntry	1.3.6.1.4.1.429.4.48.4.1.1		not-accessible	Trap Enable Configuration parameters for the E1/R2 module.
INT hdr2TeIndex	1.3.6.1.4.1.429.4.48.4.1.1.1	INTEGER	read-only	The index which uniquely identifies the Hiper E1/R2 CARD to which this entry is applicable.
INT hdr2TeMultiFrame	1.3.6.1.4.1.429.4.48.4.1.1.2	INTEGER	read-write	Enable the generation of an SNMP trap upon detection of a Multi-Frame Alignment condition on the specified DS1.
INT hdr2TeMultiFrameClr	1.3.6.1.4.1.429.4.48.4.1.1.3	INTEGER	read-write	Enable the generation of an SNMP trap upon detection of clearing a Multi-Frame Alignment condition on the specified DS1.
INT hdr2TeRemMultiFrame	1.3.6.1.4.1.429.4.48.4.1.1.4	INTEGER	read-write	Enable the generation of an SNMP trap upon detection of a Remote Multi-Frame Alignment condition on the specified DS1.
INT hdr2TeRemMultiFrameClr	1.3.6.1.4.1.429.4.48.4.1.1.5	INTEGER	read-write	Enable the generation of an SNMP trap upon detection of clearing a Remote Multi-Frame Alignment condition on the specified DS1.
hdr2TeTable	1.3.6.1.4.1.429.4.48.4.1		not-accessible	A table containing the Trap Enable configurations for the Hiper E1/R2 Module.
usr	1.3.6.1.4.1.429

RFC description

Manages 3Com HDR2 (Hiper E1/R2 CAS) card configuration for digital signaling on E1 interfaces.

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Download HDR2-MIB

What Is HDR2-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description