SYMME1T1

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Organization: Symmetricom.

Last Updated: 2011-03-18

Category: Timing and Synchronization

Description: Manages Symmetricom E1/T1 interface configuration, framing, line coding, and signal quality.

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What Is SYMME1T1?

SYMME1T1 is Symmetricom's common MIB for configuring and monitoring E1/T1 telecom interface ports across its product line, organized under the symmPhysicalSignal node with separate input and output sub-nodes, each containing a status table and a configuration table. Per its description, it covers framing, line coding, and signal quality parameters for E1/T1 lines, which are the standard building blocks of telecom trunk circuits. Even though no sample leaf objects are available in the source, an E1/T1 MIB of this kind is fundamentally used to monitor the hardware/line status of telecom interfaces - loss of signal, alarm indication signal, line coding errors, and framing synchronization - which are critical fault indicators for trunk circuits. It aligns conceptually with the IETF DS1/E1 MIB model, though implemented as Symmetricom's own common MIB. It is typically deployed in Symmetricom timing/synchronization and telecom transport equipment where E1/T1 ports carry trunk traffic and need line-quality and alarm monitoring. Engineers can download the SYMME1T1 file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in SYMME1T1. 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

Symmetricom E1/T1 telecom interface equipment

Monitoring Examples

Because sample_objects is empty in the source for this module, no concrete object or table names can be confirmed; a realistic scenario would describe polling per-port E1/T1 status and configuration tables (e.g., framing mode, line code, and alarm/signal-quality state) under the input and output nodes, but specific object names cannot be verified from the available data.

What Can Be Monitored

E1/T1 line framing status
line coding configuration
signal quality/alarm status

Imported Objects

From ENTITY-MIB

entPhysicalIndex

OBJECT-TYPE

From IF-MIB

ifIndex	OBJECT-TYPE
ifNumber	OBJECT-TYPE

From SNMPv2-CONF

MODULE-COMPLIANCE
OBJECT-GROUP

From SNMPv2-SMI

Integer32
MODULE-IDENTITY
OBJECT-IDENTITY
OBJECT-TYPE

From SNMPv2-TC

DisplayString
TEXTUAL-CONVENTION

From SYMM-COMMON-SMI

EnableValue
ONVALUETYPE
symmPhysicalSignal	OBJECT-IDENTITY

OIDs

OID symbolic	OID numeric	Type	Access	Description
symmE1T1	1.3.6.1.4.1.9070.1.2.5.2.2			This is the Symmetricom Common MIB for the configuration and status monitoring of E1/T1 ports in the system. It is one of the MIBs under the symmPhysicalSignal node. This MIB is organized into two main nodes: input and output. Each node is further has two tables, one for status and one for configuration.
e1T1input	1.3.6.1.4.1.9070.1.2.5.2.2.1
inputE1T1Status	1.3.6.1.4.1.9070.1.2.5.2.2.1.1
e1T1InputStatusTable	1.3.6.1.4.1.9070.1.2.5.2.2.1.1.1		not-accessible	This table contains status information for each E1/T1 input port.
e1T1InputStatusEntry	1.3.6.1.4.1.9070.1.2.5.2.2.1.1.1.1		not-accessible	An entry of the e1T1InputStatusTable. Table index is ifIndex (port/interface index). Each entry has three parameters for the specified E1/T1 input port: 1. Port enable status (enable or disable) 2. Current value of the incoming SSM 3. Port status
I32 e1T1InputStatusIndex	1.3.6.1.4.1.9070.1.2.5.2.2.1.1.1.1.1	Integer32	not-accessible	Local index of the E1/T1 input status table.
TP5 e1T1InputPQLCurValueV1	1.3.6.1.4.1.9070.1.2.5.2.2.1.1.1.1.3	TP5000PQLVALUE	read-only	The current PQL value of the incoming SSM on this input port.
STR e1T1InputPortStatusV1	1.3.6.1.4.1.9070.1.2.5.2.2.1.1.1.1.4	DisplayString	read-only	The port status of the specified input E1/T1 input port. Possible values are On (1) and Off (2). When the input port state is enabled, port status becomes on. When input port state is disabled, input port status is off.
e1T1InputConfig	1.3.6.1.4.1.9070.1.2.5.2.2.1.2
e1T1InputConfigTable	1.3.6.1.4.1.9070.1.2.5.2.2.1.2.1		not-accessible	Configuration Table for E1/T1 input ports
e1T1InputConfigEntry	1.3.6.1.4.1.9070.1.2.5.2.2.1.2.1.1		not-accessible	An entry of the E1/T1 input configuration table. Table index is ifIndex (port/interface). Each entry has the following configuration parameters for the selected input port: 1. Frame type 2. CRC enable state 3. SSM enable state 4. SSM bit position 5. Default PQL value that can be used to override the input SSM value 6. Zero suppression state
I32 e1T1InputConfigIndex	1.3.6.1.4.1.9070.1.2.5.2.2.1.2.1.1.1	Integer32	not-accessible	Local index of the E1/T1 input configuration table.
INP e1T1InputFrameTypeV1	1.3.6.1.4.1.9070.1.2.5.2.2.1.2.1.1.2	INPUTE1T1FRAMETYPE	read-write	E1 or T1 input frame type. Supported frame types include: 1. Freq1544khz (1) 2. Freq2048khz (2) 3. CCS (3) 4. CAS (4) 5. D4 (5) 6. ESF (6) Default frame type is 2048 kHz
ENA e1T1InputCRCStateV1	1.3.6.1.4.1.9070.1.2.5.2.2.1.2.1.1.3	EnableValue	read-write	CRC enable state can be Enable (1) or Disable (2). Disabling the CRC means the CRC in the SSM is not used.
ENA e1T1InputSSMStateV1	1.3.6.1.4.1.9070.1.2.5.2.2.1.2.1.1.4	EnableValue	read-write	SSM enable state. It can be Enable (1) or Disable (2). Disabling the SSM means the incoming SSM is not used, and the forced (default) PQL value for this input port will be used during the reference selection. SSM is supported for only three frame types: EFS, CAS with CRC4, and CCA with CRC4. SSM should not be enabled for other frame types. If SSM is enabled for an input port, but the frame type does not support SSM or is not sending a valid SSM, then this input will be disqualified and the input PQL will be set to 'invalid.' The system will go into holdover no other qualified reference is available.
I32 e1T1InputSSMBitV1	1.3.6.1.4.1.9070.1.2.5.2.2.1.2.1.1.5	Integer32	read-write	SSM Bit position. The value range is 4 to 8. This parameter is only used for frame types ESF, CCS, or CAS.
TP5 e1T1InputPQLValueV1	1.3.6.1.4.1.9070.1.2.5.2.2.1.2.1.1.6	TP5000PQLVALUE	read-write	The user assigned PQL value for the specified input. This PQL value is used when the SSM state is disabled. The range for the user assigned PQL value is 1 to 9.
ONV eT1InputZeroSupprV1	1.3.6.1.4.1.9070.1.2.5.2.2.1.2.1.1.7	ONVALUETYPE	read-write	The number indicates whether zero suppression (ZS) on the input port is enabled or disabled. Valid values are On (1) or Off (2).
e1T1Output	1.3.6.1.4.1.9070.1.2.5.2.2.2
e1T1OutputStatus	1.3.6.1.4.1.9070.1.2.5.2.2.2.1
e1T1OutputStatusTable	1.3.6.1.4.1.9070.1.2.5.2.2.2.1.1		not-accessible	This table contains status information for each E1/T1 output port.
e1T1OutputStatusEntry	1.3.6.1.4.1.9070.1.2.5.2.2.2.1.1.1		not-accessible	An entry of the e1T1OutputStatusTable. Table index is ifIndex (port/interface index). Each entry has two parameters for the specified E1/T1 input port: 1. Port status 2. Outgoing SSM value
I32 e1T1OutputStatusIndex	1.3.6.1.4.1.9070.1.2.5.2.2.2.1.1.1.1	Integer32	not-accessible	Local index of the E1/T1 output status table.
STR e1T1OutputPortStatusV1	1.3.6.1.4.1.9070.1.2.5.2.2.2.1.1.1.2	DisplayString	read-only	The port status of the specified E1/T1 output port. Possible values are On (1) and Off (2). 'On' means there is signal on the port. For E1/T1 output port it means the system is in normal tracking mode. 'Off' means there is no signal on the port. For E1/T1 output port it means the output is squelched during some clock states.
TP5 e1T1OutputPQLValueV1	1.3.6.1.4.1.9070.1.2.5.2.2.2.1.1.1.3	TP5000PQLVALUE	read-only	The PQL value for the specified E1/T1 output port.
e1T1OutputConfig	1.3.6.1.4.1.9070.1.2.5.2.2.2.2
e1T1OutputConfigTable	1.3.6.1.4.1.9070.1.2.5.2.2.2.2.1		not-accessible	This table contains configuration information for each E1/T1 output port.
e1T1OutputConfigEntry	1.3.6.1.4.1.9070.1.2.5.2.2.2.2.1.1		not-accessible	An entry of the e1T1OutputConfigTable. Table index is ifIndex (port/interface index). Each entry has the configuration parameters for the specified E1/T1 output port: 1. Port enable state 2. Frame type 3. CRC enable state 4. SSM enable state 5. SSM bit position 6. Zero suppression on/off state 7. Output port cable length
I32 e1T1OutputConfigIndex	1.3.6.1.4.1.9070.1.2.5.2.2.2.2.1.1.1	Integer32	not-accessible	Local index of the E1/T1 output configuration table.
POR e1T1OutputStateV1	1.3.6.1.4.1.9070.1.2.5.2.2.2.2.1.1.2	PORTSTATETYPE	read-write	E1/T1 output port enable state. Its value can be Enable (1) or Disable (2). Disabling an output port means no output is generated for that port.
OUT e1T1OutputFrameTypeV1	1.3.6.1.4.1.9070.1.2.5.2.2.2.2.1.1.3	OUTPUTE1T1FRAMETYPE	read-write	E1 or T1 output frame type. Supported frame types include: 1. Freq1544khz (1) 2. Freq2048khz (2) 3. CCS (3) 4. CAS (4) 5. D4 (5) 6. ESF (6) Default frame type is 2048 kHz.
ENA e1T1OutputCRCStateV1	1.3.6.1.4.1.9070.1.2.5.2.2.2.2.1.1.4	EnableValue	read-write	CRC enable state can be Enable (1) or Disable (2). Disabling the CRC means that no CRC is generated for the SSM.
ENA e1T1OutputSSMStateV1	1.3.6.1.4.1.9070.1.2.5.2.2.2.2.1.1.5	EnableValue	read-write	SSM enable state. It can be Enable (1) or Disable (2). Disabling the output SSM means that no SSM is generated for the specified output port.
I32 e1T1OutputSSMBitV1	1.3.6.1.4.1.9070.1.2.5.2.2.2.2.1.1.6	Integer32	read-write	SSM Bit position. The value range is 4 to 8. This parameter is only used for frame types ESF, CCS, or CAS.
ONV e1T1OutputZeroSupprV1	1.3.6.1.4.1.9070.1.2.5.2.2.2.2.1.1.7	ONVALUETYPE	read-write	The number indicates whether zero suppression (ZS) on the output port is enabled or disabled. Valid values are On (1) or Off (2).
I32 e1T1OutputLengthV1	1.3.6.1.4.1.9070.1.2.5.2.2.2.2.1.1.8	Integer32	read-write	Output cable length.
e1T1Conformance	1.3.6.1.4.1.9070.1.2.5.2.2.3			This node contains conformance statement for the symmE1T1 MIB module.
e1T1Compliances	1.3.6.1.4.1.9070.1.2.5.2.2.3.1
e1T1BasicCompliance	1.3.6.1.4.1.9070.1.2.5.2.2.3.1.1			The compliance statement for SNMP entities which have E1/T1 input/output.
e1T1UocGroups	1.3.6.1.4.1.9070.1.2.5.2.2.3.2
e1T1InputStatusGroup	1.3.6.1.4.1.9070.1.2.5.2.2.3.2.1			A collection of objects providing information applicable to E1/T1 input status group.
e11T1InputConfigGroup	1.3.6.1.4.1.9070.1.2.5.2.2.3.2.2			A collection of objects providing information applicable to E1/T1 input configuration group.
e11T1OutputStatusGroup	1.3.6.1.4.1.9070.1.2.5.2.2.3.2.3			A collection of objects providing information applicable to E1/T1 output status group.
e11T1OutputConfigGroup	1.3.6.1.4.1.9070.1.2.5.2.2.3.2.4			A collection of objects providing information applicable to E1/T1 output configuration group.

RFC description

Configures E1/T1 port parameters including frame types, clock sources, and monitoring status.

Start monitoring Symmetricom E1/T1 telecom interface equipment (line status/alarm/framing monitoring) 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 SYMME1T1

What Is SYMME1T1?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description