CXISDN-MIB

All MIBs › CXISDN-MIB

Category: SNA and Legacy Protocols, Telephony and VoIP, Vendor: Aastra

Description: Manages Aastra ISDN interface configuration including PRI/BRI parameters, layer 2/3 settings, and call routing.

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What Is CXISDN-MIB?

CXISDN-MIB is a vendor-specific Aastra/CX MIB managing ISDN interface configuration on CX-series WAN access equipment, covering PRI/BRI parameters, Layer 2/3 protocol settings, call routing, and ISDN timer configuration. It exposes both configuration objects (Layer 3 SAP timers like T304/T305/T308) and status/software version information, plus a dedicated trap group for ISDN events. Its most direct use in hardware/software status monitoring is tracking isdnSoftwareVersion to confirm firmware consistency across devices, and monitoring the Layer 3 SAP timer configuration and trap notifications to detect call-setup failures, dropped ISDN connections, or protocol timer misconfigurations that cause premature call teardown. It depends on the ITU-T Q.921/Q.931 ISDN signaling standards that its Layer 2/3 objects model. It is typically deployed on Aastra CX ISDN access routers or gateways used for ISDN-based WAN backup or primary connectivity at enterprise sites and telco access points. Engineers can download the CXISDN-MIB file directly to load it into their MIB browser.

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

Aastra ConvertedX (CX) ISDN access router/gateway

Monitoring Examples

An administrator would subscribe to isdnTraps to be notified of ISDN link or call-state events in near real time rather than only through polling. isdnL3SapTable entries such as isdnL3SapT305Timer or isdnL3SapT308Timer would be checked when calls are dropping prematurely, since incorrect timer values relative to the far end can cause repeated call clearing. isdnSoftwareVersion would be polled across a fleet of devices to confirm firmware consistency before troubleshooting an interoperability issue.

What Can Be Monitored

ISDN software version
Layer 3 SAP timer values (T304/T305/T308/T310/T313/T318/T319)
ISDN trap/event notifications
Layer 3 SAP alias/naming
default timer configuration profile

Imported Objects

From CXProduct-SMI

Alias
SapIndex
cxISDN	OBJECT-IDENTITY

From RFC-1212

OBJECT-TYPE

From RFC-1215

TRAP-TYPE

From RFC1155-SMI

Counter

From RFC1213-MIB

DisplayString

OIDs

OID symbolic	OID numeric	Type	Access	Description
NTF isdnL3SapStatusIndication	1.3.6.1.4.1.495.2.1.6.32.0.1			Indicates that an event specified in isdnL3SapStatusEvent has occurred.
NTF isdnCCSapStatusIndication	1.3.6.1.4.1.495.2.1.6.32.0.2			Indicates that an event specified in isdnCCSapStatusEvent has occurred.
STR isdnSoftwareVersion	1.3.6.1.4.1.495.2.1.6.32.1	DisplayString	read-only	Identifies the main version and revision numbers (separated by a period) of the ISDN software layer. Default Value: none
INT isdnTraps	1.3.6.1.4.1.495.2.1.6.32.2	INTEGER	read-write	Indicates whether this software layer produces the isdnCCSapStatusIndication and isdnL3SapStatusIndication traps. Options: disabled(1): software layer does not produce CC and L3 status indication traps enabled (1): software layer produces CC and L3 status indication traps Default Value: disabled Configuration Changed: administrative
isdnL3SapTable	1.3.6.1.4.1.495.2.1.6.32.20		not-accessible	A table containing configuration, controls, status and statistics information about each ISDN layer lower service access point.
isdnL3SapEntry	1.3.6.1.4.1.495.2.1.6.32.20.1		not-accessible	The parameters for a specific lower service access point.
SAP isdnL3SapNumber	1.3.6.1.4.1.495.2.1.6.32.20.1.1	SapIndex	read-only	Indicates the row containing objects for configuring (or monitoring) a SAP that is associated with another SAP in the LAPD software layers. Note: The SAP number has to be the same than the Digital Subscriber Line number used in the BCM software layer. Range of Values: 1-6 Default Value: none
INT isdnL3SapRowStatus	1.3.6.1.4.1.495.2.1.6.32.20.1.2	INTEGER	read-write	Determines whether this SAP is to be removed from service (i.e. invalidated) within the ISDN software layer. Options: invalid (1): row is flagged; after next reset values will be disabled and row will be deleted from table valid (2): values are enabled Default Value: none Configuration Changed: administrative
ALI isdnL3SapAlias	1.3.6.1.4.1.495.2.1.6.32.20.1.3	Alias	read-write	Determines the textual name identifying this lower SAP. Range of Values: 0-16 alphanumeric characters beginning with a non-numeric character Default Value: none Configuration Changed: administrative
ALI isdnL3SapCompanionAlias	1.3.6.1.4.1.495.2.1.6.32.20.1.4	Alias	read-write	Determines the textual name identifying this SAPs companion SAP in the LAPD software layer. Range of Values: 0-16 alphanumeric characters beginning with a non-numeric character Default Value: none Configuration Changed: administrative
INT isdnL3SapUserNetType	1.3.6.1.4.1.495.2.1.6.32.20.1.10	INTEGER	read-write	Determines the Basic Rate Interface emulation for this SAP. Options: user (1): BRI type is User network (2): BRI type is Network (for future use) Default Value: user Configuration Changed: administrative
INT isdnL3SapT303Timer	1.3.6.1.4.1.495.2.1.6.32.20.1.11	INTEGER	read-write	Determines the interval in seconds that the ISDN software layer will wait for an Alerting, Connect, Setup Acknowledge, Call Proceeding, or Release Complete message after sending a Setup message. Range of Values: 0-255 Default Value: 4 Configuration Changed: administrative
INT isdnL3SapT304Timer	1.3.6.1.4.1.495.2.1.6.32.20.1.12	INTEGER	read-write	Determines the interval in seconds that the ISDN software layer will wait for a Call Proceeding, Alerting, Connect, or Disconnect message after sending an Information message. Range of Values: 0-255 Default Value: 15 Configuration Changed: administrative
INT isdnL3SapT305Timer	1.3.6.1.4.1.495.2.1.6.32.20.1.13	INTEGER	read-write	Determines the interval in seconds that the ISDN software layer will wait for a Release or Disconnect message after sending a Disconnect message. Range of Values: 0-255 Default Value: 30 Configuration Changed: administrative
INT isdnL3SapT308Timer	1.3.6.1.4.1.495.2.1.6.32.20.1.14	INTEGER	read-write	Determines the interval in seconds that the ISDN software layer will wait for a Release or Release Complete message after sending a Release message. Range of Values: 0-255 Default Value: 4 Configuration Changed: administrative
INT isdnL3SapT310Timer	1.3.6.1.4.1.495.2.1.6.32.20.1.15	INTEGER	read-write	Determines the interval in seconds that the ISDN software layer will wait for an Alerting, Connect, Disconnect or Progress message after receiving a Call Proceeding message. Range of Values: 0-255 Default Value: 10 Configuration Changed: administrative
INT isdnL3SapT313Timer	1.3.6.1.4.1.495.2.1.6.32.20.1.16	INTEGER	read-write	Determines the interval in seconds that the ISDN software layer will wait for a Connect Acknowledge message after sending a Connect message. Range of Values: 0-255 Default Value: 4 Configuration Changed: administrative
INT isdnL3SapT318Timer	1.3.6.1.4.1.495.2.1.6.32.20.1.17	INTEGER	read-write	Determines the interval in seconds that the ISDN software layer will wait for a Resume Acknowledge or Resume Reject message after sending a Resume message. Range of Values: 0-255 Default Value: 4 Configuration Changed: administrative
INT isdnL3SapT319Timer	1.3.6.1.4.1.495.2.1.6.32.20.1.18	INTEGER	read-write	Determines the interval in seconds that the ISDN software layer will wait for a Suspend Acknowledge or Suspend Reject message after sending a Suspend message. Range of Values: 0-255 Default Value: 4 Configuration Changed: administrative
INT isdnL3SapDefTimerCfg	1.3.6.1.4.1.495.2.1.6.32.20.1.19	INTEGER	read-write	Determines whether isdnL3SapT303Timer, isdnL3SapT304Timer, isdnL3SapT305Timer, isdnL3SapT308Timer, isdnL3SapT310Timer, isdnL3SapT313Timer, isdnL3SapT318Timer and isdnL3SapT319Timer will revert immediately to their default values if the value of this object has previously permitted these values to be changed from their defaults. Options: noDefCfg (1): timer values can be or have been modified DefCfg (2): timer value will maintain or return to their defaults Default Value: DefCfg Configuration Changed: administrative
INT isdnL3SapStatusEvent	1.3.6.1.4.1.495.2.1.6.32.20.1.40	INTEGER	read-only	Indicates a status generated by the isdnL3SapStatusIndication trap. Note: This value will always read noEvent unless isdnTraps has been enabled and an event has been trapped. Options: noEvent (1): no trapped event badCfgVersion (2): configuration template not current badDslID (3): wrong Digital Subscriber Line dslInUse (4): Digital Subscriber Line in use dslNotInUse (5): Digital Subscriber Line not available noNLCB (6): network layer control block not available nlcbInitErr (7): network layer control block initialization error badSwitchType (8): incorrect switch-type configuration nlcbPoolErr (9) no more network layer control blocks Default Value: noEvent
INT isdnL3SapDslType	1.3.6.1.4.1.495.2.1.6.32.20.1.41	INTEGER	read-only	Indicates the type of physical interface for this SAP. Options: none (1): SAP has no interface bri (2) SAP uses a Basic Rate Interface pri (3) SAP uses a Primary Rate Interface Default Value: none
INT isdnL3SapBRIType	1.3.6.1.4.1.495.2.1.6.32.20.1.42	INTEGER	read-only	Indicates the BRI type for this SAP. Options: none (1): SAP has no BRI interface u (2): BRI type is U s-t (3): BRI type is S/T Default Value: none
isdnCCSapTable	1.3.6.1.4.1.495.2.1.6.32.21		not-accessible	A table containing configuration information about each upper service access point.
isdnCCSapEntry	1.3.6.1.4.1.495.2.1.6.32.21.1		not-accessible	The parameters for a specific upper service access point.
SAP isdnCCSapNumber	1.3.6.1.4.1.495.2.1.6.32.21.1.1	SapIndex	read-only	Indicates the row containing objects for configuring (or monitoring) a SAP that is associated with the corresponding SAP in the BCM software layer. Note: The SAP number has to be the same than the Digital Subscriber Line number used in the BCM software layer. Range of Values: 1-6 Default Value: none
INT isdnCCSapRowStatus	1.3.6.1.4.1.495.2.1.6.32.21.1.2	INTEGER	read-write	Determines whether this SAP is to be removed from service (i.e. invalidated) within the ISDN software layer. Options: invalid (1): row is flagged; after next reset values will be disabled and row will be deleted from table valid (2): values are enabled Default Value: none Configuration Changed: administrative
ALI isdnCCSapAlias	1.3.6.1.4.1.495.2.1.6.32.21.1.3	Alias	read-write	Determines the textual name identifying this upper SAP. Range of Values:0-16 alphanumeric characters beginning with a non-numeric character Default Value: none Configuration Changed: administrative
INT isdnCCSapSwitchType	1.3.6.1.4.1.495.2.1.6.32.21.1.10	INTEGER	read-write	Determines the type of protocol supported by the switch providing the CX 900 with ISDN access. Options: unspecified (1): unspecified bri-1TR6 (2): Germany / 1TR6 bri-5ESS (3): U.S.A / At&T 5ESS bri-CCITT (4): CCITT Q.931 bri-DMS100 (5): U.S.A / Norther Telecom bri-KDD (6): Japan / KDD bri-NET3 (7): Europe / Net3 bri-NI1 (8): U.S.A / National ISDN 1 bri-NI2 (9): U.S.A / National ISDN 2 bri-NTT (10): Japan / NTT bri-TS013 (11): Australia / TS013 bri-VN (12): France / VN Default Value: bri-NI1 Configuration Changed: administrative
INT isdnCCSapInitTerminal	1.3.6.1.4.1.495.2.1.6.32.21.1.11	INTEGER	read-write	Determines the initializing characteristics of the ISDN software layer of the CX 900. Options: nit (1): non-initializing terminal fit (2) fully-initializing terminal (North American Note: FIT requires terminal registration. Default Value: nit Configuration Changed: administrative
INT isdnCCSapDNRouting	1.3.6.1.4.1.495.2.1.6.32.21.1.12	INTEGER	read-write	Determines whether incoming calls will be checked against End-Point ID (EPID). Options: no (1): incoming call not checked against EPID yes (2): incoming call checked against EPID Note: Incoming call not containing EPID will be checked against Directory Number (DN). Default Value: no Configuration Changed: administrative
INT isdnCCSapBearerRouting	1.3.6.1.4.1.495.2.1.6.32.21.1.13	INTEGER	read-write	Determines whether incoming calls will be checked against the bearer-type specified in isdnCCSapBearerType Options: no (1): incoming call not checked against bearer-type yes (2): incoming call checked against bearer-type Default Value: no Configuration Changed: administrative
INT isdnCCSapBearerType	1.3.6.1.4.1.495.2.1.6.32.21.1.14	INTEGER	read-write	Determines the bearer-type that will be checked if isdnCCSapBearerType is set to yes. Options: voice call (1): call is voice circuit-sw-data-call (2): call is circuit- switched data packet-sw-data-call (3): call is packet- switched data Default Value: circuit-sw-data-call Configuration Changed: administrative
STR isdnCCSapDirectoryNumber	1.3.6.1.4.1.495.2.1.6.32.21.1.15	DisplayString	read-write	Determines the address or calling number assigned to the subcriber interface of the CX900. Range of Values: 0-16 numeric characters (namely, 0123456789*#) Default Value: none Configuration Changed: administrative
STR isdnCCSapSPID	1.3.6.1.4.1.495.2.1.6.32.21.1.16	DisplayString	read-write	Determines the Service Profile Identifier (SPID) for the subscriber interface of the CX900. This object is meaningful only in North America. SPIDs are required for DMS-100 and NI-1 switches but optional for 5ESS switches. Range of Values: 0-20 Default Value: none Configuration Changed: administrative
STR isdnCCSapSubAddress	1.3.6.1.4.1.495.2.1.6.32.21.1.17	DisplayString	read-write	Determines the subaddress (DSS1) that can be used with object isdnCCSapDirectoryNumber to specify an end-point user to be reached. Range of Values: 0-20 Default Value: none Configuration Changed: administrative
INT isdnCCSapT415Timer	1.3.6.1.4.1.495.2.1.6.32.21.1.18	INTEGER	read-write	Determines the interval in seconds that the ISDN software layer will wait for completion of terminal initialization. If the Information and SPID messages fail during this interval, they will be permitted only one retransmission. Range of Values: 0-255 Default Value: 20 Configuration Changed: administrative
INT isdnCCSapStatusEvent	1.3.6.1.4.1.495.2.1.6.32.21.1.40	INTEGER	read-only	Indicates a status generated by the isdnCCSapStatusIndication trap. Note: This value will always read noEvent unless isdnTraps has been enabled and an event has been trapped. Options: noEvent (1): no trapped event badCfgVersion (2): configuration template not current badDslID (3): wrong Digital Subscriber Line badCes (4): bad connection end-point badSwitchType (5): incorrect switch-type configuration cbPollErr (6): call control block error dslInUseErr (7): Digital Subscriber Line in use dslNotCfgErr (8): Digital Subscriber Line not configured dslNotInUse (9): Digital Subscriber Line not available noHostCB (10): no host control block noT415 (11): no T415 timer Default Value: noEvent
INT isdnCCSapInUse	1.3.6.1.4.1.495.2.1.6.32.21.1.41	INTEGER	read-only	Indicates whether this upper SAP has been properly initialized and is now in use. Options: no (1): SAP has not been initialized yes (2): SAP is in use Default Value: none
CTR isdnCCSapActiveCalls	1.3.6.1.4.1.495.2.1.6.32.21.1.42	Counter	read-only	Indicates the current number of active calls at this SAP. Range of Values: 0-2 Default Value: none
isdnDebugTable	1.3.6.1.4.1.495.2.1.6.32.22		not-accessible	A table containing control to access debugging information.
isdnDebugEntry	1.3.6.1.4.1.495.2.1.6.32.22.1		not-accessible	The parameters for a specific structure debugging information.
SAP isdnDebugNumber	1.3.6.1.4.1.495.2.1.6.32.22.1.1	SapIndex	read-only	Indicates the row containing objects for creating diagnostic files for this upper SAP. Range of Values: 1-6 Default Value: none
INT isdnDebugCCB	1.3.6.1.4.1.495.2.1.6.32.22.1.10	INTEGER	write-only	Creates a file that includes the following Call Control Block information: - DSL = #XX - CCB = #XX - State = 0xXXXX - CallType = 0xXXXX - B-Chan = 0xXXXX - Call-ID = 0xXXXX - CallRef = 0xXXXX - Ces = 0xXX - Sapi = 0xXX - MakePrivateMsg = 0xXX - H cbIndex = 0xXXXX - CallRefLen = 0xXXXX - Cause = 0xXXXX - Host-Specifier = 0xXXXX - Host-ID = 0xXXXX - SendClearConf = 0xXX - Diagnostics = 0xXX - CollectAddress = 0xXX - Service = 0xXXXX
INT isdnDebugHCB	1.3.6.1.4.1.495.2.1.6.32.22.1.11	INTEGER	write-only	Creates a file that includes the following Host Control Block information: - DSL = #XX - HCB = #XX - Directory = XXXXXXXXXXXXXXXXXXXX - SPID = XXXXXXXXXXXXXXXXXXXX epid(0) - epsf = 0xXX - usid = 0xXXXX - tid = 0xXXXX epid[1] - epsf = 0xXX - usid = 0xXXXX - tid = 0xXXXX - Busy[0] = 0xXX, - Busy[1] = 0xXX - Terminal-state = 0xXX - Timer-T415 = 0xXXXX - Bearer-Routing = 0xXX - Host-ID = 0xXXXX - Ces = 0xXX - Initializing-Terminal = 0xXX
INT isdnDebugCCDsl	1.3.6.1.4.1.495.2.1.6.32.22.1.12	INTEGER	write-only	Creates a file that includes the following Call Control DSL information: - DSL = #XX - InUse = 0xXXXX - ActiveCCBs = 0xXXXX - Cause-Location = XXXXXX - Cd-Numb-Plan = XXXXXX - Cd-Numb-Type = XXXXXX - Cd-Sub-Type = XXXXXX - Cr-Numb-Plan = XXXXXX - Cr-Numb-Type = XXXXXX - Cr-Prest-Ind = XXXXXX - Cr-Scrn-Ind = XXXXXX - Cr-Sub-Type = XXXXXX - Facility-Code = XXXXXX - HL-Coding-Std = XXXXXX - HL-Interpret = XXXXXX - HL-Presentat = XXXXXX - HL-Teleservice = XXXXXX - L2-Prot = XXXXXX - L3-Prot = XXXXXX - Sig-Val = XXXXXX - Status = XXXXXX - Transmit-Attr = XXXXXX - Xfer-Cap = XXXXXX - Xfer-Mode = XXXXXX - Xfer-Prot = XXXXXX - Xfer-Rate = XXXXXX - Prog-Coding = XXXXXX - Prog-Loc = XXXXX - Prog-desc = XXXXXX - Ind-Val = XXXXXX
INT isdnDebugNLCB	1.3.6.1.4.1.495.2.1.6.32.22.1.13	INTEGER	write-only	Creates a file that includes the following Network Link Control Block information: - DSL = #XX - NLCB = #XX - DslID = 0xXXXX - Ces = 0xXX - CallID = 0xXXXX - ChanID = 0xXXXX - CallReflen = 0xXX - CallRef = 0xXXXX - State = 0xXXXX - Event = 0xXXXX - Timer-T304 = 0xXXXX - Timer-T310 = 0xXXXX - T303-First = 0xXX - T308-First = 0xXX - T313-First = 0xXX - UserOriginated = 0xXX - Internal = 0xXX - Cause = 0xXX - PreviousCause = 0xXX

RFC description

ISDN configuration and status management for CXProduct devices including layer 3 SAP configuration, timers, and signaling parameters.

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Download CXISDN-MIB

What Is CXISDN-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

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RFC description