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Maintenance and Troubleshooting

5-2

9121-A2-GB20-00

June 1997

T1 Access Unit

Label

Indication

Color

What It Means

Power and
Operational
Status

Green

ON –

Access unit has power and is
operational.

OFF –

Access unit is in a power-up self-test,
or there is a failure.

Blinking ON and OFF ( Rate: 1 Hz ) –

Software is being downloaded.

ALM

Operational
Alarm ( Fail )

Red

ON –

Access unit has just been reset, or an
error or fault has been detected.

Error/fault/alarm conditions:

Out of Frame ( OOF )

Loss of Signal (LOS)

Alarm Indication Signal (AIS)

Exceeded Error Rate (EER)

Yellow Alarm Signal

Device Fail

DBM Card Failed

Memory Failed

T1 Failed

CPU Failed

ISDN Network Failed

LMI Down

DLCI Down

Network Communication Link Down

CTS Down to device

DTR Down to device

Download Failed

Primary or Secondary Clock Failed

OFF –

No failures have been detected.

Содержание 9121

Страница 1: ...E CHANGE Please note that the area code for Paradyne Corporation in Largo Florida has changed from 813 to 727 For any Paradyne telephone number that appears in this manual with an 813 area code dial 727 instead ...

Страница 2: ...T1 FRAME RELAY ACCESS UNIT MODEL 9120 9121 USER S GUIDE Document No 9121 A2 GB20 00 June 1997 ...

Страница 3: ...particular purpose Further Paradyne Corporation reserves the right to revise this publication and to make changes from time to time in the contents hereof without obligation of Paradyne Corporation to notify any person of such revision or changes Changes and enhancements to the product and to the information herein will be documented and issued as a new release to this manual Warranty Sales and Se...

Страница 4: ...se harmful interference to radio communications Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense The authority to operate this equipment is conditioned by the requirements that no modifications will be made to the equipment unless the changes or modifications are expressl...

Страница 5: ...iguration the product must comply with the applicable Safety Standards and regulatory requirements of the country in which it is installed If necessary consult with the appropriate regulatory agencies and inspection authorities to ensure compliance 8 A rare phenomenon can create a voltage potential between the earth grounds of two or more buildings If products installed in separate buildings are i...

Страница 6: ...Using the Access Unit 1 3 2 User Interface Interfaces to the T1 Frame Relay Access Unit 2 1 T1 Access Unit s Faceplate 2 1 Async Terminal User Interface 2 1 Network Management 2 1 Menu Hierarchy 2 2 Main Menu Screen 2 2 Screen Format Types 2 3 What Affects Screen Displays 2 3 Screen Work Areas 2 4 Navigating the Screens 2 5 Keyboard Keys 2 5 Screen Function Keys 2 6 Using the Interface 2 7 Selecti...

Страница 7: ...e Collected 4 17 Displaying Statistical Information 4 18 Network Physical Performance Statistics 4 19 Selecting T1 Network Statistical Intervals for Display 4 20 Port Physical Performance Statistics 4 21 DBM Physical Performance Statistics 4 21 Frame Relay Performance Statistics 4 22 PVC Performance Statistics 4 24 Clearing Performance Statistics 4 25 5 Maintenance and Troubleshooting LEDs 5 1 T1 ...

Страница 8: ...up Tells you how to log in out and how to start end a session Chapter 4 Displaying System Information Tells you how to display information about your system via the user interface and describes status and statistical information provided by the access unit Chapter 5 Maintenance and Troubleshooting Consolidates LED indicators ASCII alarm error and status messages tells you what they mean and what y...

Страница 9: ...0 1 Slot Assembled Access Unit Installation Instructions Describes how to install a fully assembled 1 slot access unit Includes technical specifications 9000 A2 GN11 1 Slot Access Unit Wall Mounting Kit Installation Instructions Describes how to install the mounting hardware with an access unit so the 1 slot assembled unit can be mounted onto the wall Includes technical specifications 9000 A2 GN13...

Страница 10: ...Ports 1 and 2 Local or remote management using a menu driven user interface or through SNMP simple network management protocol management MIBs support MIB II RFC 1213 and RFC 1573 Frame Relay DTEs MIB RFC 1315 DS1 E1 MIB RFC 1406 RS 232 Like MIB RFC 1659 Frame Relay Service MIB RFC 1604 and Enterprise MIB Data port rates Port 1 4 8 9 6 14 4 16 8 19 2 24 28 8 38 4 48 56 64 128 192 256 320 384 448 5...

Страница 11: ...o ports can be automatically configured Frame relay discovery method Configures the frame relay portion of the access unit Based upon the local management interface LMI status response messages the access unit automatically discovers a network DLCI and cross connects the DLCI to a port DLCI provided the port is configured as the user side Management PVCs can also be discovered and cross connected ...

Страница 12: ...rmation rate excess burst size provided Modify network design to include access units Define IP addressing scheme with an IP address assigned to the access unit and IP addresses and subnet masks added to configuration worksheets Install ISDN BRI DBM if ordered Install access unit ready to be configured Determine the configuration shortcuts to be used Complete configuration worksheets for configuri...

Страница 13: ... faceplate includes 12 LEDs light emitting diodes See Chapter 5 Maintenance and Troubleshooting for an understanding of what each LED indicates Async Terminal User Interface Access to the easy to use menu driven interface is provided through an async asynchronous or other VT100 compatible terminal PC terminal emulation or a Telnet session This guide focuses upon using this menu driven user interfa...

Страница 14: ...lect and cancel test for the access unit s interfaces Configuration Display and edit the configuration options Configuration Shortcuts Configure basic access unit setup automatically based upon a selected application Fill network and data port DLCI configuration options with numeric settings automatically Control Control the user interface for call setup device naming login administration and down...

Страница 15: ...mation on a screen Underlines in the field value or selection indicate an input or edit field Display Display configuration information and results from performance and system specific tests No underlines in the field value or selection indicate a display only field What Affects Screen Displays What appears on the screens depends on Current configuration How your network is currently configured Se...

Страница 16: ...sical Device Name Node A Model xxxx PORT n PHYSICAL OPTIONS Port Type E530 Port Rate Kbps 256 Transmit Clock Internal Invert Transmit Clock Disable Port DTE Initiated Loopbacks Disable Control Leads Supported Both Ctrl a to access these functions ESC for previous menu MainMenu Exit Save Select Enable Disable Menu Path Device Name Screen Function Keys Model Number Screen Area System Messages and Fi...

Страница 17: ... Ctrl k Move cursor one position to the left or to the last character of the previous field Backspace Select the next valid value for the field Spacebar Delete character that the cursor is on Delete Del Move cursor up one field within a column on the same screen Up Arrow or Ctrl u Move cursor down one field within a column on the same screen Down Arrow or Ctrl d Move cursor one character to the ri...

Страница 18: ...d press Return to M or m MainMenu Return to the Main Menu screen E or e Exit Terminate the async terminal session N or n New Enter new data O or o Modify Modify existing data L or l Delete Delete data S or s Save Save information R or r Refresh Update screen with current information V or v PVCs Display PVC statistics for the selected interface C or c ClrStats Clear network performance statistics a...

Страница 19: ...ntil you reach the screen you want Refer to the Quick Reference to guide you through menu selections Selecting a Field Once you reach the desired menu or screen select a field to view change or issue a command Press the Tab or right arrow key to select a field within a menu The current setting or value appears to the right of the field Example To change the amount of time that a test will run befo...

Страница 20: ...he selection H Switch from the screen area to the screen function area and select or enter the designated screen function key See Switching Between Screen Work Areas below for an example If a field is blank and the System Messages and Field Values screen area displays valid selections press the spacebar the first valid setting for the field appears Continue pressing the spacebar to scroll through ...

Страница 21: ...rd and press Return An asterisk appears in the password field for each character entered If the Login ID Password combination is Then the Valid Main Menu appears Begin your session Invalid Message Invalid Password is displayed on line 24 and the Login screen is redisplayed If an invalid Login ID Password combination is entered 3 consecutive times A Telnet session is closed The User Interface Idle ...

Страница 22: ... screen area to the screen function key area 2 Select Exit by entering e and pressing Return The session is ended Starting a Session Depending on how your network is configured you can start a session using one of the following methods H Telnet session through an in band management channel through the frame relay network H Telnet session through a local in band management channel configured on the...

Страница 23: ... the unit through Telnet and the user interface is currently in session The message Connection refused appears Access unit allows only one connection at a time See Device Status Messages in Chapter 5 Attempting direct access through the COM port and the user interface is currently in session The message User Interface Already In Use appears with the active user s IP address See Device Status Messa...

Страница 24: ...he terminal is disconnected 3 If ending a configuration editing session the Save Configuration screen appears with the Save Changes prompt If you select Then No The session is terminated without the configuration option changes being saved Yes The Save Configuration To screen appears Select a configuration option area to save your changes to Current Customer 1 or Customer 2 and press Return Config...

Страница 25: ...tion is available for viewing Use the right and left arrow keys to scroll additional text into view View this field To find the System Identity System Name Domain name for the SNMP managed node A maximum of 40 characters System Contact Contact person for this SNMP managed node System Location Physical location for this SNMP managed node NAM Identity Serial Number NAM s 7 character serial number Mo...

Страница 26: ...ame Relay Access Unit Model 9120 9121 Technical Reference for more information Statuses Status information is useful when monitoring the access unit Use the Status menu to display information concerning Select To System and Test Status View System and Test Status including H Health and Status Displayed in priority order highest to lowest H Self Test Results Diagnostic test run on the device itself...

Страница 27: ...includes H Operating mode H Name of the active ISDN call profile s destination H Last cause value message H Calling ID of the remote DBM Displaying Status Information Procedure To display statuses 1 Use the following menu sequence Main Menu Status 2 Select the type of information you want to view e g Status PVC Connection Status The following sections provide information about the status informati...

Страница 28: ...abled ISDN backup call manual or automatic could not be made because the Call Profile had been disabled Enable the ISDN Call Profile Main Menu Control ISDN Call Profiles Enable BRI Bn Call Profile Invalid ISDN backup call manual or automatic could not be made because the Call Profile is invalid 1 Verify that the ISDN Call Profile identifier is not blank 2 Check that the phone number associated wit...

Страница 29: ...RI B2 interface Verify that the RJ45 backup cable ISDN U is properly seated in the physical interface BKP Wait and see if the DLCI s link is active on the primary destination link If it is no action is required If not contact network provider No action is needed if communicating directly with another access unit The other unit has chosen to revert back to the primary destination link Device Fail y...

Страница 30: ...n a dial backup module DBM is installed Contact network provider if problem persists LMI Down interface The Local Management Interface is down for the Network Port 1 Port 2 BRI B1 or BRI B2 LMI for a BRI interface only applies when the B channel is configured as the originating device interface Originate or Answer configuration option set to Originate See if the DLCI s link is active on the altern...

Страница 31: ...ative Network Com Link Down The communication link for the COM port is down and the COM port is configured for Net Link Check the router connected to the COM port OOF at Network An Out of Frame OOF condition is detected on the network interface 1 Incompatible framing format between the network and the access unit 2 Network cabling problem 3 T1 facility problem 1 Check that the framing format for t...

Страница 32: ...ming for the NAM The clock source will not automatically switch from internal until the primary clock source returns If the secondary clock was derived from the network contact the network provider Check the clock source connector Yellow at Network A yellow alarm signal is received on the network interface 1 Network cable problem 2 Far end access unit has lost framing sync on the T1 line 3 T1 faci...

Страница 33: ...unit to the factory see Page A at the front of this guide DSX 1 T1 Fail The NAM failed to internally loop data on the DSX 1 circuit 1 Reset the unit and try again 1 2 Call your service representative for assistance 3 Return the unit to the factory see Page A at the front of this guide Failure xxxxxxxx An internal failure occurred xxxxxxxx represents an eight digit hexadecimal failure code for use ...

Страница 34: ...k T1 Fail The NAM failed to internally loop data on the network T1 circuit 1 Reset the unit and try again 1 2 Call your service representative for assistance 3 Return the unit to the factory see Page A at the front of this guide Passed Self Test is enabled the access unit has been plugged in or reset the access unit has passed the diagnostic test and there are no other status messages No action ne...

Страница 35: ... DSX 1 Physical Tests screen Path main test dsx_phy to activate or deactivate the test DSX 1 RLB Test Active A DSX 1 Repeater Loopback RLB test is active Allow the loopback to continue or abort the test Press Return while the loopback is selected via the Command column on the DSX 1 Physical Tests screen Path main test dsx_phy to activate or deactivate the test DTE External LB Port n An external DT...

Страница 36: ...ing and the number of errors during that time are displayed 2 Continue monitoring test Press Return while the test is selected via the Command column on the interface s PVC Tests screen Path main test network port 1 port 2 BRI _pvc to activate or deactivate the test Monitor Pattern interface 3 Access unit is monitoring the selected test pattern on the network or DSX 1 interface When status is Acti...

Страница 37: ... Network Physical Tests screen Path main test network_phy to activate or deactivate the test PVC Loopback DLCI nnnn 1 interface 3 A PVC Loopback is running on the selected DLCI Allow the loopback to continue Press Return while the loopback is selected via the Command column on the interface s Physical Tests screen Path main test network port 1 port 2 BRI _pvc to activate or deactivate the test Sen...

Страница 38: ...lay LMI Reported DLCIs Status 1 Use the following menu sequence Main Menu Status LMI Reported DLCIs 2 Select the desired interface Network Port 1 Port 2 BRI B1 or BRI B2 Field Status What It Indicates DLCI 16 through 1007 Identifies the Local Management Interface reported DLCI numbers assigned to the selected interface the identifying number assigned to the path between two frame relay access unit...

Страница 39: ...nt link that terminates in the access unit name is set up from Management PVCs Options Path main configuration management pvc entry Source DLCI Primary Destination DLCI and Alternate Destination DLCI 16 to 1007 Identifies the DLCI number for a frame relay interface once the source or destination link has been selected Source EDLCI Primary Destination EDLCI and Alternate Destination EDLCI 0 to 62 F...

Страница 40: ...1001 5 Active 6 Port 2 206 Network 1001 3 Active 7 Port 1 207 Network 1001 Active BRI 400 Inactive 8 Port 1 208 Network 500 Active 9 Port 1 209 Network 502 Inactive BRI B1 302 Active 10 Port 1 210 Network 504 Inactive BRI B1 304 Active ESC for previous menu MainMenu Exit Refresh PgUp PgDn DBM Interface Status ISDN BRI DBM statuses appear when DBM Interface Status is selected from the Status menu T...

Страница 41: ... Local call origination Called ID of the remote device Negotiated Rate 64 Kbps 56 Kbps Negotiated rate of the connection link Performance Statistics Use the Status menu to display statistical information for a selected interface Network Port 1 Port 2 DBM BRI B1 or DBM BRI B2 Statistical information is useful when trying to determine the severity and frequency or duration of a condition NOTE All st...

Страница 42: ...o be cleared reset to 0 You can clear these statistics for the individual interfaces or for all interfaces Statistics can also be cleared from the individual performance statistics screens Selection only appears when 1 Line Framing Format is set to ESF 2 Port is enabled 3 Interface the port BRI B1 or BRI B2 is enabled and the frame relay Link Status is enabled 4 ISDN BRI DBM is installed and enabl...

Страница 43: ... a replication or deletion of a DS1 frame by the receiving device This is collected for network performance statistics only Loss of Frame Count LOFC The number of Loss of Frame conditions In addition to the metrics kept for the Network physical interface the value of the Status Event Register is kept for each 15 minute interval user count only The system records the occurrence of the following eve...

Страница 45: ...ics only appear when an ISDN BRI DBM is installed enabled and DBM Physical is selected from the Performance Statistics menu Main Menu Status Performance Statistics DBM Physical Statistic What It Indicates Call Attempts Number of unsuccessful call attempts made by the DBM Calls Originated Number of successful call attempts made by the DBM Calls Answered Number of successful calls answered by the DB...

Страница 46: ...S Received Number of Backward Explicit Congestion Notifications received over the interface The network sends BECNS to notify users of data traffic congestion in the opposite direction of the frame carrying the BECN indicator Frame Relay Errors Invalid Rx Frames Number of invalid frames received over the interface There is a non frame relay device on the far end of the circuit Short Rx Frames Numb...

Страница 47: ...rectly Unknown Error Number of frames received over the interface that do not fall into one of the other statistic categories Indicates that the error is not one that the unit can recognize Frame Relay LMI Status Msg Received Number of LMI status messages received over the interface Normal condition Reliability Errors Number of LMI reliability errors received over the interface Normal condition Pr...

Страница 48: ...y have occurred and backup may not have occurred over the same BRI interface each time Statistic What It Indicates Interface s PVC DLCI DLCI number selected for display of the PVC statistics for a specific DLCI This is a DLCI selection or entry field Tx Rx Characters Number of data octets 8 bit bytes sent received for the selected DLCI on the interface Tx Rx Frames Number of frames sent received f...

Страница 49: ...ives BECNs to notify users of data traffic congestion in the opposite direction of the frame carrying the BECN indicator Rx FECN Frames Number of Forward Explicit Congestion Notifications received for the selected DLCI on the interface The network sends FECNs to notify users of data traffic congestion in the same direction of the frame carrying the FECN indicator NOTE Clearing statistics from the ...

Страница 50: ...ork Port 1 Port 2 or BRI Clear Statistics menu appears Select All or the statistics associated with a selected interface For interface Select To clear Network Port 1 Port 2 or BRI 1 All T1 network s port s or ISDN BRI DBM s statistics Physical Only statistics associated with the physical interface network NET port Port 1 or Port 2 or ISDN BRI DBM BKP Frame Relay Link Only frame relay link statisti...

Страница 51: ...the DTE interfaces Test jacks are also provided on the faceplate The following illustration shows a Model 9120 9121 T1 Frame Relay Access Unit faceplate 97 15315 2 O K O K A L M T S T B K P S I G O O F A L M S I G O O F A L M 1 O K 9121 I N O U T I N O U T I N O U T I N O U T NET DSX NET MON DSX MON NETWORK DSX PORT From the user interface async terminal or NMS access this status information by go...

Страница 52: ... downloaded ALM Operational Alarm Fail Red ON Access unit has just been reset or an error or fault has been detected Error fault alarm conditions Out of Frame OOF Loss of Signal LOS Alarm Indication Signal AIS Exceeded Error Rate EER Yellow Alarm Signal Device Fail DBM Card Failed Memory Failed T1 Failed CPU Failed ISDN Network Failed LMI Down DLCI Down Network Communication Link Down CTS Down to ...

Страница 53: ...d OFF Rate 1 Hz Alternate Destination Link is being established but no data has been passed Network DSX Interface Label Indication Color What It Means SIG Signal Green ON A recoverable signal is present on the Network DSX interface OFF The signal cannot be recovered from the Network DSX interface An LOS condition exists OOF Out of Frame Yellow ON At least one OOF was detected during the sampling p...

Страница 54: ... one alarm condition is detected only the highest priority message will be sent other alarm conditions could exist Example When a 04 10 97 10 26 32 Frame Relay DLCI number 201 is down on the Port 1 Interface message is reported you could also have a Primary or Secondary Clock Source Failure as well All messages in the following table are listed in order of priority Each message is preceded by the ...

Страница 55: ...etwork provider mm dd yy hh mm ss Alarm Cleared for Out of Frame OOF condition at the Network DSX 1 Interface Alarm condition no longer exists No action needed mm dd yy hh mm ss Alarm Indication Signal AIS received at the Network DSX 1 Interface An Alarm Indication Signal condition is detected on the network or DSX 1 interface Check the status of the far end unit If necessary contact network provi...

Страница 56: ...a DBM Card Failure Alarm condition no longer exists mm dd yy hh mm ss An ISDN Network Failure has been detected active ISDN Network Failure condition has been detected at the specified date month day year and time hour minute second Check the network connection Contact network provider mm dd yy hh mm ss Alarm Cleared for an ISDN Network Failure Alarm condition no longer exists mm dd yy hh mm ss Th...

Страница 57: ...unit The other unit has chosen to revert back to the primary destination link mm dd yy hh mm ss Alarm Cleared Frame Relay DLCI Number DLCI number is up on the T1 Network Port 1 Port 2 BRI B1 BRI B2 Interface Alarm condition no longer exists mm dd yy hh mm ss A Primary Clock Source Failure has occurred The primary clock source has failed The system is operating from the secondary clock source 1 If ...

Страница 58: ...has been entered Re enter information using valid characters Invalid Test Already Active A test was already in progress when it was selected No action needed Invalid CSU DTE Network Initiated Loopback Active Network initiated loopback was in progress when CSU or DTE Loopback Start was selected No action needed Selecting Abort All Tests from the Test menu Path main test will not interrupt a network...

Страница 59: ...combination 2 Reenter the new login ID Limit of 40 Links Reached A management PVC is being created and 40 links already exist Do not create the link Delete another link and try again Name Must be Unique Name entered for a management PVC has been used previously Enter another 4 character name for the logical management link No DLCIs Available for Net Link A management PVC is being created and the m...

Страница 60: ...ain Contact your system administrator to verify your password Set Frame Relay Link Status to Disable first Tried to disable the physical port when the logical link was up tried to change Port Status to Disable while Link Status was enabled 1 Change Link Status to Disable 2 Retry disabling the port Value Out of Range CIR entered for the DLCI is a number greater than 64 000 or is a special character...

Страница 61: ...en saved or all tests have been aborted No action needed Connection Refused User interface is in use access unit already accessed Wait and try again Please Wait Command takes longer than 5 seconds Wait until message clears Test Active No higher priority health and status messages exist and a test is running Contact service provider if test initiated by the network Wait until the other test ends an...

Страница 62: ...esently not available 58 Bearer capability requested is supported by the device generating the cause but it is not available at this time Retry at another time Call awarded and being delivered in est chnl 7 An incoming call is being connected to an already established channel that is used for similar calls No action needed Call profile disabled 129 Call received by the ISDN BRI DBM but Call Profil...

Страница 63: ...stination 88 Request to establish a call has been received but low layer high layer or another compatibility attribute e g data rate cannot be provided Incorrect format of the destination link 1 Check the configured attribute 2 Change the appropriate attribute configuration option e g change data rate Identified channel does not exist 82 Channel requested for a call is not activated on the interfa...

Страница 64: ...ment Contact your service representative Message not compatible with call state 101 Device sending this cause has received a message that is not permissible while in the call state Contact your service representative Msg nonexistent 98 An unexpected message was received in a state other than Null Retry the call Msg type nonexistent or unimplemented 97 Device sending this cause has received a non e...

Страница 65: ...rmal event No action needed No user responding 18 Called device does not respond to the call with an alert or connect indication within the prescribed period of time Internal network timers may be a cause Contact network provider if the cause continues Number changed 22 Called number is no longer assigned Look in the diagnostic field for the new number then change the phone number in your ISDN cal...

Страница 66: ...Requested facility not subscribed 50 The supplementary service requested cannot be provided by the network until user completes arrangement with its supporting networks 1 Notify your system administrator that the arrangements are not complete 2 Complete the necessary arrangements Resource unavailable unspecified 47 No other cause in the resource unavailable class applies for this resource unavaila...

Страница 67: ...ontinue for long Wait and try again Unallocated number 1 Destination requested cannot be reached because the Calling ID number is not assigned or allocated Assign the Calling ID Path main control isdn_call_profile User access information discarded 43 Network was unable to deliver the access information when trying to establish the call No action needed User alerting no answer 19 During call establ...

Страница 68: ...l Backup Module The optional internal ISDN BRI feature that provides automatic dial backup and service restoration of failed digital circuits Provides an ISDN U interface Discard Eligibility Part of the frame header that marks a frame for low priority if there is congestion on the network If congestion occurs DE frames are the first to be discarded by the network Data Link Connection Identifier Th...

Страница 69: ...tion e g ALM on the front panel for an alarm condition Local Management Interface The standard set of procedures and messages that manage PVCs the route between two DTEs It is a common standard for link management signaling information exchange Network Access Module It is a type of CCA that accesses or interfaces with the network Network Management System A computer system used for monitoring and ...

Страница 70: ...ranch 2 2 Shortcut Active 4 4 Shortcuts 1 2 2 2 GL 1 templates 1 2 worksheets ix Control keys 2 5 menu branch 2 2 copyrights A CTS down to Port n Device 4 4 D data port rates 1 1 selection criteria 2 3 DBM Card Failure 5 6 definition GL 1 Download Failed 4 5 ISDN BRI backup 1 2 physical performance statistics 4 21 DE definition GL 1 Delete key 2 5 Device Error messages 5 8 Fail 5 2 messages 5 8 mo...

Страница 71: ...unit wall mounting kit ix 1 slot assembled access unit ix DBM ix NAM ix power cord transformer ix interface async terminal user 2 4 menu driven user 1 1 user 2 1 IP addressing ix definition GL 2 ISDN BRI DBM 1 2 definition GL 2 ISDN Active 4 6 ISDN Network Failed 4 6 K keys keyboard 2 5 screen function 2 4 2 6 L Lamp Test 4 12 Last Cause Value messages 5 12 LED definition GL 2 LEDs ix 2 1 5 1 Link...

Страница 72: ...at Network 4 7 organization of this guide viii Out of Frame 5 2 P performance statistics 4 17 clearing 4 25 physical statistics 4 19 4 21 pin assignments ix Port physical statistics 4 21 primary destination GL 2 Primary Clock Failed 4 8 protocol GL 2 PVC definition GL 2 monitoring 1 1 statistics 4 24 R rates 1 1 regulatory information ix related documents ix Return Enter key 2 5 right arrow key 2 ...

Страница 73: ...information 4 2 LED 5 2 menu branch 2 2 PVC connection 4 15 switching between screen areas 2 8 synchronous GL 2 system and test status messages 4 3 messages 2 4 System Name Contact and Location 4 1 T Tab key 2 5 technical reference ix Telnet GL 2 Test menu branch 2 2 Mode 5 3 monitoring 1 1 Status messages 4 11 TM definition GL 2 trademarks A traps ix troubleshooting 5 1 U user interface 1 1 2 1 t...

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