Chapter 7, TL1 Alarms and Errors

TL1 Alarms and Errors

This chapter provides TL1 alarm and error information supported by the Cisco ONS 15454 and Cisco ONS 15327, including:

•Alarms

•Errors

•Echo

Each alarm includes a description and severity. Each error is listed by error code and includes error type and error message. For a list of TL1 conditions, see Table 4-46.

7.1 Alarms

Refer to "Alarm Troubleshooting" in the Cisco ONS 15454 Troubleshooting Guide and in the Cisco ONS 15327 User Documentation for complete alarm definitions, trouble notifications, and fault recovery procedures. The alarms are listed alphabetically by alarmable object:


• AIP	• EXT-SREF
• BITS	• FAN
• BPLANE	• G1000
• DS1	• NE
• DS3	• NE-SREF
• E1000F	• OCN
• E100(T)	• STSMON
• EC1-12	• STSTRM
• ENVALRM	• VT-MON
• EQPT	• VT-TERM

For a sample of each TL1 alarm that can be generated by the ONS 15454, refer to the file 15454_r33_tl1_alarms.txt on the Cisco ONS 15454 Software CD in the subdirectory \TL1. For a sample of each TL1 alarm that can be generated by the ONS 15327, refer to the file 15327_r33_tl1_alarms.txt on the Cisco ONS 15327 Software CD in the subdirectory \TL1. These files can be used to test an operations support system's ability to receive alarms which the ONS 15454/ONS 15327 can raise.

7.1.1 AIP

Auxiliary interface protection module

Table 7-1 AIP
AIP Alarm	Severity (Active)	Description
INVMACADR	MA/NSA	The ONS 15454/15327 media access control layer address (MAC address) is invalid.
MEA	CR/SA	The mismatch between entity/equipment type and provisioned attributes alarm occurs when the physical card inserted in a slot does not match the card type that is provisioned for that slot in the CTC.
MFGMEM	CR/SA	The manufacturing data memory failure alarm means that the ONS 15454/15327 cannot access the data on the erasable programmable read-only memory (EPROM).

7.1.2 BITS

Building integration timing supply (BITS) incoming references (BITS-1, BITS-2)

Table 7-2 BITS
BITS Alarm	Severity (Active)	Description
LOF	MA/SA	A port on the TCC+/MIC BITS input detects a loss of frame (LOF) on the incoming BITS timing reference signal.
LOS	MA/SA	The TCC+/MIC card has a loss of signal (LOS) condition from the BITS timing source.
SSM-FAIL	MI/NSA	Synchronization status messaging failed.

7.1.3 BPLANE

The backplane

Table 7-3 BPLANE
BPLANE Alarm	Severity (Active)	Description
MFGMEM	CR/SA	The manufacturing data memory failure alarm means that the ONS 15454/15327 cannot access the data on the erasable programmable read-only memory (EPROM).

7.1.4 DS1

A DS1 line on a DS1 or DS3XM card

Table 7-4 DS1
DS1 Alarm	Severity (Active)	Description
LOF	MA/SA	The receiving ONS 15454/15327 has lost frame delineation in the incoming data.
LOS	MA/SA	A loss of signal (LOS) at the card for either a DS-3 port or a DS-1 port.
RCVR-MISS	MA/SA	The facility termination equipment detects a missing receive cable on the DS-1 port or a possible mismatch of backplane equipment.
TRMT	MA/SA	There is a transmission failure on the DS-1 card due to an internal hardware failure.
TRMT-MISS	MA/SA	The facility termination equipment detects a missing transmit cable on the DS-1 port or a possible mismatch of backplane equipment.

7.1.5 DS3

A DS3 line

Table 7-5 DS3
DS3 Alarm	Severity (Active)	Description
LOF	CR/SA	The receiving ONS 1545415327 has lost frame delineation in the incoming data.
LOS	CR/SA	Loss of signal at the card for either a DS-3 port or a DS-1 port.

7.1.6 E1000F

An Ethernet line on an E1000

Table 7-6 E1000F
E1000F Alarm	Severity (Active)	Description
CARLOSS	MA/SA	The Ethernet card has lost its link and is not receiving any signal, even an invalid one.

7.1.7 E100(T)

An Ethernet line on an E10 or E100

Table 7-7 E100(T)
E100T Alarm	Severity (Active)	Description
CARLOSS	MA/SA	The Ethernet card has lost its link and is not receiving any signal, even an invalid one.

7.1.8 EC1-12

An EC1 line on an EC1 card (ONS 15454 only)

Table 7-8 EC1-12
EC1-12 Alarm	Severity (Active)	Description
LOF	CR/SA	The receiving ONS 15454 has lost frame delineation in the incoming data.
LOS	CR/SA	A port on the reporting EC-1 card has a loss of signal condition. A SONET receiver detects an all-zero pattern for 10 microseconds or longer.

7.1.9 ENVALRM

An environmental alarm port on an AIC card (ONS 15454) or MIC card (ONS 15327)

Table 7-9 ENVALRM
ENVALRM Alarm	Severity (Active)	Description
EXT	MA/SA	A facility alarm is detected external to the node because an environmental alarm is present.

7.1.10 EQPT

A card in any of the card slots. This object is used for alarms that refer to the card itself and all other objects on the card including ports, lines, STS and VT.

Table 7-10 EQPT
EQPT Alarm	Severity (Active)	Description
AUTORESET	MI/NSA	The card is performing a warm reboot automatically.
BKUPMEMP	CR/NSA	A problem with the TCC+/XTC card's flash memory.
CARLOSS	MI/NSA	The Ethernet card has lost its link and is not receiving any signal, even an invalid one.
CONTBUS-A-18	MA/NSA	The main processor on the TCC+/XTC card in Slot 7/Slot 5 has lost communication with the coprocessor on the second TCC+/XTC card in Slot 11/Slot 6.
CONTBUS-A	MA/NSA	The TCC+/XTC card in Slot 7/Slot 5 has lost communication with a line card.
CONTBUS-B-18	MA/NSA	The main processor on the TCC+/XTC card in Slot 11/Slot 6 has lost communication with the coprocessor on the TCC+/XTC card in Slot 7/Slot 5.
CONTBUS-B	MA/NSA	The TCC+/XTC card in Slot 11/Slot 6 has lost communication with a line card.
CTNEQPT-PBPROT	CR/SA	A failure of the main payload between the protect cross-connect (XC/XCVT/XC10G) card in Slot 10, or the protect XTC card, and the reporting traffic card.
CTNEQPT-PBWORK	CR/SA	The main payload bus between the active cross-connect (XC/XCVT/XC10G) card in Slot 8, or the active XTC card, and the reporting traffic card.
EQPT	CR/SA	A hardware failure occurred on the reporting card.
EXCCOL	MI/NSA	There are too many collisions are occurring on the network management LAN.
HITEMP	MI/NSA	The temperature of the ONS 15454/ONS 15327 is above 50 degrees Celsius.
IMPROPRMVL	CR/SA	A card was physically removed from its slot before the card was deleted in CTC.
MEA	CR/SA	The mismatch between entity/equipment type and provisioned attributes alarm occurs when the physical card inserted in a slot does not match the card type that is provisioned for that slot in the CTC.
MEM-GONE	MA/NSA	Data generated by software operations exceeds the memory capacity of the TCC+/XTC card.
MEM-LOW	MI/NSA	Data generated by software operations is close to exceeding the memory capacity of the TCC+XTC card.
PEER- NORESPONSE	MA/NSA	The switch agent raises a Peer Card Not Responding alarm if either I/O card in a protection group does not receive a response to the peer status request message.
SFTWDOWN-FAIL	MI/NSA	The software download from the TCC+/XTC card to the ONS 15454 failed.
SNTP-HOST	MI/NSA	An ONS node serving as an IP proxy for the other ONS nodes in the ring is not forwarding SNTP information to the other ONS nodes in the network.
SWMTXMOD	CR/SA	Traffic on the reporting card is lost when this failure occurs.

7.1.11 EXT-SREF

BITS outgoing references (SYNC-BITS1, SYNC-BITS2)

Table 7-11 EXT-SREF
EXT-SREF Alarm	Severity (Active)	Description
SYNCPRI	MI/NSA	A loss of the primary timing source (reference 1).
SYNCSEC	MI/NSA	A loss of the secondary timing source (reference 2).
SYNCTHIRD	MI/NSA	A loss of the third timing source (reference 3).

7.1.12 FAN

Fan-tray assembly

Table 7-12 FAN
FAN Alarm	Severity (Active)	Description
EQPT-MISS	CR/SA	Indicates the replaceable fan tray assembly unit is missing or not fully inserted.
FAN	CR/SA	A problem with the fan-tray assembly.
MEA	CR/SA	The mismatch between entity/equipment type and provisioned attributes alarm occurs when the physical card inserted in a slot does not match the card type that is provisioned for that slot in the CTC.
MFGMEM	CR/SA	The manufacturing data memory failure alarm means that the ONS 15454/ONS 15327cannot access the data on the erasable programmable read-only memory (EPROM).

7.1.13 G1000

An Ethernet line on a G1000 (ONS 15454 only)

Table 7-13 G1000
NE Alarm	Severity (Active)	Description
CARLOSS	MA/SA	A carrier loss on the LAN is the data equivalent of a SONET LOS alarm. The Ethernet card has lost its link and is not receiving a valid signal.
TPTFAIL	MA/SA	Indicates a break in the end-to-end Ethernet link integrity feature of the G1000-4 cards. This alarm indicates a far-end condition and not a problem with the port reporting TPTFAIL.

7.1.14 NE

The entire network element (SYSTEM)

Table 7-14 NE
NE Alarm	Severity (Active)	Description
BLSROSYNC	MA/SA	The mapping table needs updating.
DATAFLT	MI/NSA	The database exceeded the capacity of the flash memory on the TCC+/XTC.
EHIBATVG-A	MA/SA	The voltage level on battery lead A exceeds -56.7 Vdc. (ONS 15454)
EHIBATVG-B	MA/SA	The voltage level on battery lead B exceeds -56.7 Vdc. (ONS 15454)
ELWBATVG-A	MA/SA	The voltage on battery feed A is extremely low or has been lost, and power redundancy is no longer guaranteed. (ONS 15454)
ELWBATVG-B	MA/SA	The voltage on battery feed B is extremely low or has been lost, and power redundancy is no longer guaranteed. (ONS 15454)
HITEMP	CR/SA	The temperature of the ONS 15454/ONS 15327 is above 50 degrees Celsius (122 degrees Fahrenheit).
PRC-DUPID	MA/SA	Two identical node IDs exist in the same ring.
PWR-A	MA/SA	This alarm applies to the NE rack. It is raised when there is no power supplied to the main power connector or if power is connected to the backup power connector (Connector B) but not to Connector A. (ONS 15454)
PWR-B	MA/SA	This alarm applies to the NE rack. It is raised when there is no power supplied to the backup power connector or if power is connected to the main power connector (Connector A) but not to Connector B. (ONS 15454)
NE Alarm	Severity (Active)	Description
RING-MISMATCH	MA/SA	The Ring ID of the ONS 15454/ONS 15327that is reporting the alarm does not match the Ring ID of another ONS node in the BLSR.
SYSBOOT	MA/SA	New software is booting on the TCC+/XTC card.

7.1.15 NE-SREF

Represents the timing status of the NE

Table 7-15 NE-SREF
NE-SREF Alarm	Severity (Active)	Description
FRNGSYNC	MA/SA	The reporting ONS 15454/ONS 15327 is in free run synchronization mode.
FSTSYNC	MI/NSA	A fast start synchronization. The ONS 15454/ ONS 15327 is choosing a new timing reference.
HLDOVRSYNC	MA/SA	A loss of primary/secondary timing reference.
SYNCPRI	MI/NSA	A loss of the primary timing source (reference 1).
SYNCSEC	MI/NSA	A loss of the secondary timing source (reference 2).
SYNCTHIRD	MI/NSA	A loss of the third timing source (reference 3).

7.1.16 OCN

An OCN line on an OCN card

Table 7-16 OCN
OCN Alarm	Severity (Active)	Description
APSB	MI/NSA	The line terminating equipment detects protection switching byte failure in the incoming automatic protection switching (APS) signal if an inconsistent APS byte or invalid code is detected.
APSCDFLTK	MI/NSA	A BLSR is not properly configured.
APSC-IMP	MI/NSA	Invalid K bytes.
APSCINCON	MI/SA	The SONET overhead contains K1/K2 APS bytes that notify receiving equipment, such as the ONS 15454/ONS 15327, to switch the SONET signal from a working to a protect path.
APSCM	MA/SA	The ONS 15454/ONS 15327 expects a working channel but receives a protection channel.
APSCNMIS	MA/SA	The node ID contained in the K2 byte of the APS channel being received is not present in the ring map.
APSMM	MI/NSA	There is a mismatch of the protection switching schemes at the two ends of the span.
AUTOLSROFF	CR/SA	The OC-192 card temperature exceeds 90 degrees Centigrade. The internal equipment automatically shuts down the OC-192 laser when the card temperature rises to prevent the card from self-destructing.(ONS 15454)
AUTORESET	MI/NSA	A card performs a warm reboot automatically.
EOC	MA/NSA	The ONS 15454/ONS 15327 has lost its data communications channel (DCC).
E-W-MISMATCH	MA/SA	Nodes in a ring have an east slot/port misconnected to another east slot/port or a west slot/port misconnected to another west slot/port.
FEPRLF	MI/NSA	An automatic protection switching channel failure on a signal coming into the node.
LOF	CR/SA	A port on the reporting OC-N card has an LOF condition.
LOS	CR/SA	A port on the reporting OC-N card has a LOS condition.
SSM-FAIL	MI/NSA	Synchronization status messaging received by the ONS 15454/ONS 15327 failed

7.1.17 STSMON

STS alarm detection at the monitor point (upstream of cross-connect)

Table 7-17 STSMON
STSMON Alarm	Severity (Active)	Description
CONCAT	CR/SA	The transmitted STSc circuit is smaller than the provisioned STSc causing a mismatch of the circuit type on the concatenation facility.
FAILTOSW	MI/NSA	Fail to switch to protection.
LOP-P	CR/SA	A loss of pointer (LOP) condition at the path level.
PLM-P	CR/SA	A signal label mismatch failure (SLMF).
TIM-P	MI/NSA	The expected path trace string does not match the received path trace string.
UNEQ-P	CR/SA	The path does not have a valid sender.

7.1.18 STSTRM

STS alarm detection at termination (downstream of cross-connect)

Table 7-18 STSTRM
STSTRM Alarm	Severity (Active)	Description
LOP-P	CR/SA	A loss of pointer (LOP) condition at the path level.
PLM-P	CR/SA	A signal label mismatch failure (SLMF).
TIM-P	MI/NSA	The expected path trace string does not match the received path trace string. Path trace mode can be set to auto or manual for this alarm to occur.
UNEQ-P	CR/SA	The path does not have a valid sender.

7.1.19 VT-MON

VT1 alarm detection at the monitor point (upstream of cross-connect)

Table 7-19 VT-MON
VT-MON Alarm	Severity (Active)	Description
AUTOSW-LOP	MI/SA	Automatic UPSR protection switching took place because of an LOP alarm.
AUTOSW- UNEQ	MI/SA	Automatic UPSR protection switching took place because of an UNEQ alarm.
LOP-V	MA/SA	A loss of pointer at the VT level.
UNEQ-V	MA/SA	The node is receiving SONET path overhead with bits 5, 6 and 7 of the V5 overhead byte all set to zeroes. The failure has occurred at the VT layer.

7.1.20 VT-TERM

VT1 alarm detection at termination (downstream of cross-connect)

Table 7-20 VT-TERM
VT-TERM Alarm	Severity (Active)	Description
LOP-V	MA/SA	A loss of pointer at the VT level.
PLM-V	MI/SA	The content of the V5 byte in the SONET overhead is inconsistent or invalid.
UNEQ-V	MA/SA	The node is receiving SONET path overhead with bits 5, 6 and 7 of the V5 overhead byte all set to zeroes. The failure has occurred at the VT layer.

7.2 Errors

Errors may be generated by any command or command response message. The format of an error message is as follows:

SID DATE TIME
M CTAG DENY
<ERRCDE>
/* <ERRMSG> */
;

Table 7-21 Error Codes
Error Code (ERRCDE)	Error Type	Error Message (ERRMSG)
EANS	EQUIPAGE	Access Not Supported
EATN	EQUIPAGE	Not Valid for Access Type
EFON	EQUIPAGE	Feature Option not Provided
EN2T	EQUIPAGE	Not 2-wire Terminate and Leave
ENAC	EQUIPAGE	Not Equipped with Alarm Cutoff
ENAD	EQUIPAGE	Not Equipped with Audit Capability
ENAR	EQUIPAGE	Not Equipped with Automatic Reconfiguration
ENAT	EQUIPAGE	Request Not Valid for Access Type
ENDG	EQUIPAGE	Not Equipped with Diagnostic Capability
ENDS	EQUIPAGE	Not Equipped with Duplex Switching
ENEA	EQUIPAGE	Not Equipped with Error Analysis Capability
ENEQ	EQUIPAGE	Not Equipped
ENEX	EQUIPAGE	Not Equipped with Exercise Capability
ENFE	EQUIPAGE	Feature not Provided
ENFL	EQUIPAGE	Not Equipped for Fault Locating
ENHN	EQUIPAGE	Not Hybrid Network
ENMB	EQUIPAGE	Not Multipoint Bridge
ENMD	EQUIPAGE	Not Equipped with Memory Device
ENPM	EQUIPAGE	Not Equipped for Performance Monitoring
ENPS	EQUIPAGE	Not Equipped with Protection Switching
ENRE	EQUIPAGE	Not Recognized Equipage
ENRI	EQUIPAGE	Not Equipped for Retrieving Specified Information
ENRS	EQUIPAGE	Not Equipped for Restoration
ENSA	EQUIPAGE	Not Equipped for Scheduling Audit
ENSG	EQUIPAGE	Not Software Generic
ENSI	EQUIPAGE	Not Equipped for Setting Specified Information
ENSS	EQUIPAGE	Not Equipped with Synchronization Switching
ENTL	EQUIPAGE	Not Terminate and Leave
ERLC	EQUIPAGE	Red-Lined Circuit
ERNS	EQUIPAGE	RTU Does Not Support Command
ESPG	EQUIPAGE	Software Program
ETNS	EQUIPAGE	TSC Does Not Support Command
FNCR	FAULT	NE Failure - Circuit Restored to Last Condition - Monitor or Terminate
FNDT	FAULT	No Dial Tone Detected
FNEC	FAULT	NTE Has Lost 8-KHZ Byte Clock
FNSC	FAULT	NTE Has Lost 16-KHZ Byte Clock
FRCE	FAULT	RTU Component or Configuration Error
FRDA	FAULT	RTU Does Not Answer the Call
FREC	FAULT	RTU Eight KHZ Byte Clock Lost
FRNR	FAULT	RTU Does Not Reply
IBEX	INPUT	Block Extra
IBMS	INPUT	Block Missing
IBNC	INPUT	Block Not Consistent
ICNV	INPUT	Command Not Valid
IDMS	INPUT	Data Missing
IDNC	INPUT	Data Not Consistent
IDNV	INPUT	Data Not Valid
IDRG	INPUT	Data Range Error
IIAC	INPUT	Invalid Access Identifier (AID)
IICM	INPUT	Invalid Command
IICT	INPUT	Invalid Correlation Tag
IIDT	INPUT	Invalid Data Parameter
IIFM	INPUT	Invalid Data Format
IIPG	INPUT	Invalid Parameter Grouping
IISP	INPUT	Invalid Syntax or Punctuation
IITA	INPUT	Invalid Target Identifier
INAC	INPUT	Access Number Not Correct
INUP	INPUT	Non-Null Unimplemented Parameter
IPEX	INPUT	Parameter Extra
IPMS	INPUT	Parameter Missing
IPNC	INPUT	Parameter Not Consistent
IPNV	INPUT	Parameter Not Valid
ISCH	INPUT	Syntax Invalid Character
ISPC	INPUT	Syntax Punctuation
ITSN	INPUT	Invalid/Inactive Test Session Number
PICC	PRIVILEGE	Illegal Command Code
PIMA	PRIVILEGE	Invalid Memory Address
PIMF	PRIVILEGE	Invalid Memory File
PIUC	PRIVILEGE	Illegal Privilege Code
PLNA	PRIVILEGE	Login Not Active
RABY	RESOURCE	All Taps Busy
RALB	RESOURCE	All Units of Requested Type are Busy
RANB	RESOURCE	Access Network Busy
RCBY	RESOURCE	Circuit Busy
RCIN	RESOURCE	Requested Circuit ID Does Not Exist
RNAN	RESOURCE	Requested NE Access Number Does Not Exist
RNAU	RESOURCE	Requested NE Access Number Unassigned
RNBY	RESOURCE	NE is Busy
RRCP	RESOURCE	Unit Specified by Routing Code Busy
RRNG	RESOURCE	Requested Changes Exceeds Range
RTBY	RESOURCE	Requested Tap Busy
RTEN	RESOURCE	Requested Tab Does Not Exist
RTUB	RESOURCE	Test Unit Busy
SAAL	STATUS	Already Allowed
SAAS	STATUS	Already Assigned
SABT	STATUS	Aborted
SACS	STATUS	Access Unit Cannot Sync on Facility Signal
SADC	STATUS	Already Disconnected
SADS	STATUS	Access Unit in Diagnostic State
SAIN	STATUS	Already Inhibited
SAIS	STATUS	Already In-Service
SAMS	STATUS	Already in Maintenance State
SAOP	STATUS	Already Operated
SAOS	STATUS	Already Out-of-Service
SAPF	STATUS	Access Path Continuity Check Failed
SAPR	STATUS	Already in Protection State
SARB	STATUS	All Resources Busy
SATF	STATUS	Automatic Test Failed
SCAT	STATUS	Circuit is Already Connected to Another Tap
SCBS	STATUS	Channel Busy
SCIS	STATUS	Circuit in Split Condition
SCNA	STATUS	Command Not Able to be Aborted
SCNF	STATUS	Command Not Found
SCNS	STATUS	Circuit Not in Split Condition
SCOS	STATUS	Channel Out-of-Service
SCSD	STATUS	Can't Split DS0B Circuit
SCSN	STATUS	Invalid Command Sequence
SDAS	STATUS	Diagnosis Already Started
SDBE	STATUS	Internal Data Base Error
SDFA	STATUS	Duplex Unit Failed
SDLD	STATUS	Duplex Unit Locked
SDNA	STATUS	Dumple Unit Not Available
SDNC	STATUS	Input Data is Not Consistent With NE Data
SDNR	STATUS	Data Not Ready
SDNS	STATUS	Diagnosis Not Started Yet
SEOS	STATUS	NTE is Out-of-Service
SFAS	STATUS	Fault Locating Already Started
SFNS	STATUS	Fault Locating Not Started yet
SFYA	STATUS	Facility Reports Amber Alarm
SLNS	STATUS	Log Not Started Yet
SLOS	STATUS	TSC to RTU Link Out-of-Service
SNCC	STATUS	Not Cross-Connected
SNCN	STATUS	NTE Unable to Execute Command
SNDS	STATUS	NTE is in a Diagnostic State
SNIM	STATUS	NTE Access Complete, Circuit was in Monitor State
SNIS	STATUS	Not in Service
SNML	STATUS	No Monitor Line Established
SNNB	STATUS	NTE Could Not Sync on DS0B Signal
SNNS	STATUS	NTE Could Not Sync on DS-1 Signal
SNOS	STATUS	NTE is Out-of-Service
SNPR	STATUS	Not in Protection State
SNRM	STATUS	System Not in Restoration Mode
SNRS	STATUS	Not Reserved
SNSR	STATUS	No Switch Request Outstanding
SNVS	STATUS	Not in Valid State
SNYA	STATUS	NTE has Detected an Amber Alarm
SOSE	STATUS	Operating System Error
SOST	STATUS	Out-of-Service, Testing
SPFA	STATUS	Protection Unit Failed
SPLD	STATUS	Protection Unit Locked
SPNA	STATUS	Process Not Able to be Aborted
SPNF	STATUS	Process Not Found
SRAC	STATUS	Requested Access Configuration is Invalid
SRAN	STATUS	Unable to Release Access System
SRCI	STATUS	Requested Command(s) Inhibited
SRCN	STATUS	Requested Condition Already Exists
SROF	STATUS	Requested Operation Failed
SROS	STATUS	Required RTU Out of Service
SRQN	STATUS	Invalid Request
SRTN	STATUS	Unable to Release Tap
SRTO	STATUS	Reply Timeout Occurred
SSCE	STATUS	Systemic (SNIDER) Communications Error
SSNG	STATUS	Subrate Selected is Incorrect
SSNP	STATUS	Speed Selected is Incorrect
SSNQ	STATUS	Test Signal Not QRS
SSRD	STATUS	Switch Request Denied
SSRE	STATUS	System Resources Exceeded
STAB	STATUS	Test Aborted
STLC	STATUS	Tap Unable to Locate Channel
STNO	STATUS	TSC/RTU to TAU Link Out of service
STOS	STATUS	Test Access Unit Out of Service
STTI	STATUS	Tap Idle
SWFA	STATUS	Working Unit Failed
SWLD	STATUS	Working Unit Locked

7.3 Echo

In order to improve telnet functionality for automated systems, the echo function has been turned off since ONS 15454 Release 3.0. This change is transparent to users running standard UNIX-compliant telnet clients; however, PC users may need to change their client setup to enable "local echo." This is normally accomplished by a pull-down menu or a preference attribute.

To test the local echo on your PC client, use the RTRV-HDR command. If you receive a response but no data, set local echo ON. Cisco recommends that you close any windows containing sensitive information after exiting a TL1 session.

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