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5. Testing

8776-A2-GB20-40

February 2001

5-3

Network Line Loopback

A Network Line Loopback (LLB) loops the received signal on the network interface
back to the network without change.

Procedure

To run a Network Line Loopback:

1. Position the cursor at the Start command next to Network Line Loopback on

the Network & G.703 Tests screen.

2. Press Enter.

The Start command is changed to Stop.

3. To manually stop the test, verify that the cursor is positioned at the Stop

command.

4. Press Enter.

The Network Line Loopback cannot be started when a Repeater Loopback, DTE
Loopback, or network-initiated Line Loopback is in progress.

CAP

DSL
Port

G.703
Port

CAP

LIU

Framer

Transceiver

AIS

98-15997

Summary of Contents for Hotwire 8776

Page 1: ...Hotwire 8776 TDM SDSL Termination Unit with G 703 Interface User s Guide Document No 8776 A2 GB20 40 February 2001...

Page 2: ...cal sales representative service representative or distributor directly for any help needed For additional information concerning warranty sales service repair installation documentation training dist...

Page 3: ...requirements of the country in which it is installed If necessary consult with the appropriate regulatory agencies and inspection authorities to ensure compliance 7 A rare phenomenon can create a vol...

Page 4: ...may cause 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...

Page 5: ...1 3 SNMP Management Capabilities 1 4 Management Information Base MIB Support 1 4 SNMP Trap Support 1 4 2 Using the Asynchronous Terminal Interface User Interface Access 2 1 Management Serial Port Set...

Page 6: ...ng AutoRate 3 10 Resetting AutoRate 3 11 Restoring Access to the User Interface 3 12 Resetting the Unit 3 12 4 Monitoring the Unit What to Monitor 4 1 Viewing System and Test Status 4 2 Health and Sta...

Page 7: ...ssages and Troubleshooting Overview 6 1 Configuring SNMP Traps 6 2 Device Messages 6 3 Troubleshooting 6 5 7 Security Overview 7 1 ATI Access Levels 7 1 Creating a Login 7 2 Deleting a Login 7 3 Contr...

Page 8: ...n Menu A 10 Telnet Session Options A 10 General SNMP Management Options A 12 SNMP NMS Security Options A 14 SNMP Trap Options A 16 B Standards Compliance for SNMP Traps SNMP Traps B 1 warmStart B 1 au...

Page 9: ...rovides procedures for setting up the user interface and configuring the unit Chapter 4 Monitoring the Unit Describes using the LEDs status and network statistics to monitor the unit Chapter 5 Testing...

Page 10: ...er Document Title 7970 A2 GB20 HotwireTDM SDSL Standalone Termination Units Models 7974 7975 7976 7984 7985 and 7986 User s Guide 8000 A2 GB22 Hotwire Management Communications Controller MCC Card IP...

Page 11: ...04 Mbps or fractional payload rates over a 2 wire full duplex circuit over varying distances based on the conditions of the 2 wire loop Examples include support for router multiplexer and PBX connect...

Page 12: ...erface for configuring and managing the unit locally or remotely by Telnet session Local Management Provides local management using the Management Communications Card MCC with a Terminal or PC via the...

Page 13: ...uter and frame relay encapsulated or unframed data Figure 1 1 Sample CO to CP Configuration Figure 1 2 Sample Campus Configuration shows termination units used to distribute T1 lines over a campus Fig...

Page 14: ...tistics and tests SNMP Trap Support The Hotwire 8776 Termination Unit supports traps as defined in RFC 1215 They may include variable bindings specified in the following MIBs MIB II RFC 1573 Defines t...

Page 15: ...one ATI session can be active at a time and another user s session cannot be forced to end To automatically log out a user due to inactivity enable the Inactivity Timeout option To enable the Inactivi...

Page 16: ...iating an ATI Session The Main Menu screen is displayed unless a login ID and password is required or the ATI is already in use If the ATI is already in use the message connection refused is sent to t...

Page 17: ...m administrator for each interface and each user Data selection criteria What you entered in previous screens main Access Level Administrator Hotwire Slot 4 Model 8776 MAIN MENU Status Test Configurat...

Page 18: ...tistics Network Performance Statistics Configuration Control Default Factory Configuration Configuration Loader Current Configuration Network G 703 Copy Ports System Options Management and Communicati...

Page 19: ...urrent Configuration Network Function keys and message area This is the area below the dotted line that lists function keys specific to the screen field value choices and system messages main config n...

Page 20: ...message area below the dotted line at the bottom of the screen Esc Return to the previous screen Tab Move cursor to the next field on the screen Backspace Move cursor to the previous field on the scre...

Page 21: ...alid values Press Enter to select the value Function Keys All function keys located below the dotted line operate the same way upper or lowercase throughout the screens For the screen function Select...

Page 22: ...erlined character for the function key or press the Tab key until you reach the desired function key Example To save the current options type s or S Save 3 Press Enter The function is performed 4 To r...

Page 23: ...ccessed the card through the MCC the Hotwire Chassis Card Selection menu appears Exiting From the DSLAM Session You can manually log out of the system or after five minutes of inactivity the system au...

Page 24: ...2 Using the Asynchronous Terminal Interface 2 10 February 2001 8776 A2 GB20 40...

Page 25: ...d reset the unit These procedures include Entering Identity Information on page 3 2 Configuring the Unit on page 3 3 Current and Default Factory Configurations on page 3 4 Configuration Loader on page...

Page 26: ...System Name The general SNMP system name System Location The physical location of the SNMP managed device System Contact Identification information such as contact name phone number or mailing address...

Page 27: ...on keys area below the dotted line 5 Select Save and press Enter Configuring the Unit Configuration option settings determine how the termination unit operates Use the Configuration menus to select di...

Page 28: ...has been misconfigured In the menu selection sequences contained in this manual Current Configuration is assumed and shown If you select Then Current Configuration The selected configuration option s...

Page 29: ...opy Ports Copy Ports Options Table A 3 DSL network and G 703 interface ports by copying options from port to port System Options System Options Table A 4 General system options of the unit Management...

Page 30: ...d write permissions 2 Position the cursor in the TFTP Server IP Address field Enter the TFTP server IP address The first three digits of the IP address cannot be 000 or greater than 223 3 Position the...

Page 31: ...ion to disconnect Do not answer Yes unless you are prepared to disconnect If the DSL Mode configuration option is changed the Save Configuration screen bears the warning that an answer of Yes will cau...

Page 32: ...e cursor in the TFTP Server IP Address field Enter the TFTP server IP address The first three digits of the IP address cannot be 000 or greater than 223 3 Position the cursor in the Destination field...

Page 33: ...the Escape key to return to the Control menu Select Apply Download 2 On the Apply Download screen type Yes to reset the card and activate the code Selecting Yes causes the termination unit to reset N...

Page 34: ...his menu selection sequence Main Menu Configuration Current Configuration Network The AutoRate option defaults to Enable Procedure To disable AutoRate 1 Position the cursor in the AutoRate field and p...

Page 35: ...t the highest rate or the value of DSL Line Rate which represents the AutoRate ceiling when AutoRate is enabled If the link fails the next lower rate is tried until the link is established To access t...

Page 36: ...N Entering Y restores the Default Factory Configuration 5 Enter Y at the prompt to confirm NOTE When you enter Y all data connectivity is interrupted You can also restore access to the user interface...

Page 37: ...tions Viewing System and Test Status on page 4 2 Health and Status Messages on page 4 3 Self Test Results Messages on page 4 5 Test Status Messages on page 4 5 Performance Statistics on page 4 6 Viewi...

Page 38: ...s in priority order highest to lowest Refer to Table 4 1 Health and Status Messages Self Test Results Results of the Diagnostic test run on the device itself Refer to Table 4 2 Self Test Results Messa...

Page 39: ...terrupted Repeat the download EER at G 703 Pt n An EER Excessive Error Rate condition has been detected on the G 703 interface 1 Verify that the network cable is securely attached at both ends 2 Verif...

Page 40: ...rted The LTU is configured for TS16 signaling and the NTU is not configured to support TS16 signaling 1 Verify endpoint is a G 703 product EIA 530 A products do not support signaling 2 Replace endpoin...

Page 41: ...digit hexadecimal failure code for use by service personnel Record the failure code and contact your service representative G 703 Failed Pt n The unit failed to loop data on the G 703 on Port n 1 Rese...

Page 42: ...cs on the network DSL interface for each port To view Network Error Statistics follow this menu selection sequence Main Menu Status Performance Statistics Network Error Statistics main status performa...

Page 43: ...e elapsed in the current 15 minute interval Maximum value is 900 seconds 15 minutes This counter is reset every 15 minutes When zero the port is disabled Error Events Counter A running total of CRC er...

Page 44: ...r better XmtPw The transmit power level RxGn The receiver gain level Complete Whether the interval register contains data for all 900 seconds of the interval main status performance net_perf Hotwire S...

Page 45: ...every 15 minutes Payload Rate The Payload Rate across the DSL interface Refer to Table 3 1 Fixed Rate Payload Rates and DSL Line Rates in Chapter 3 Initial Startup and Configuration DSL Line Rate The...

Page 46: ...Rate BER of 10 7 or better XmtPw The transmit power level RxGn The receiver gain level The following Network Error Statistics are collected for the selected port ES Errored Seconds Seconds during whic...

Page 47: ...ontains Current Interval Timer The number of seconds which have elapsed in the current 15 minute interval Maximum value is 900 seconds 15 minutes This counter is reset every 15 minutes When zero the p...

Page 48: ...ast one Out of Frame OOF event occurred BES Bursty Errored Seconds Contains the number of bursty errored seconds for the current interval A bursty errored second is any second with more than one but l...

Page 49: ...is screen include This Field Contains Current Interval Timer The number of seconds which have elapsed in the current 15 minute interval Maximum value is 900 seconds 15 minutes This counter resets ever...

Page 50: ...703 interface DSL Loop LEDs display the activity on the DSL network To view the LED status screen follow this menu selection sequence Main Menu Status Display LEDs The LED status display screen is upd...

Page 51: ...1 test pattern is in progress POST is in progress No tests are active G 703 1 2 3 4 Green On Slow cycling Fast cycling Off Recoverable signal is present on the G 703 interface Remote Alarm Indication...

Page 52: ...4 Monitoring the Unit 4 16 February 2001 8776 A2 GB20 40...

Page 53: ...G 703 Tests Start and stop tests on the network or G 703 interface Device Tests Start and stop a lamp test Abort All Tests To abort all currently active tests excluding Network initiated and G 703 loo...

Page 54: ...t duration Selecting a Stop command on the Network G 703 Tests screen or Abort All Tests from the Test menu will not disrupt a network initiated loopback When the Send and Monitor 511 test is active R...

Page 55: ...at the Start command next to Network Line Loopback on the Network G 703 Tests screen 2 Press Enter The Start command is changed to Stop 3 To manually stop the test verify that the cursor is positione...

Page 56: ...ater Loopback on the Network G 703 Tests screen 2 Press Enter The Start command is changed to Stop 3 To manually stop the test verify that the cursor is positioned at the Stop command 4 Press Enter Th...

Page 57: ...tion the cursor at the Start command next to G 703 DTE Loopback on the Network G 703 Tests screen 2 Press Enter The Start command is changed to Stop 3 To manually stop the test verify that the cursor...

Page 58: ...to verify the link Procedure To run a Remote Send Line Loopback 1 Position the cursor at the Up or Down selection next to Send Line Loopback on the Network G 703 Tests screen 2 Press the spacebar to s...

Page 59: ...itor 511 test 1 Position the cursor at the Start command next to Send and Monitor 511 on the Network G 703 Tests screen 2 Press Enter The Start command is changed to Stop 3 To manually stop the test v...

Page 60: ...LEDs 1 Position the cursor at the Start command next to Lamp Test on the Device Tests screen 2 Press Enter The Start command is changed to Stop During the Lamp Test all LEDs blink simultaneously ever...

Page 61: ...e test The default is 10 minutes Refer to Table A 4 System Options in Appendix A Configuration Options Command column Under the Command column on any test screen position the cursor at Stop next to th...

Page 62: ...5 Testing 5 10 February 2001 8776 A2 GB20 40...

Page 63: ...ubleshooting Overview There are many messages available to assess the status of the device and contribute to problem resolutions Refer to the following sections Configuring SNMP Traps on page 6 2 Devi...

Page 64: ...stination for each SNMP manager specified Select the type of SNMP traps to be sent from the unit To configure SNMP Traps follow this menu selection sequence Main Menu Configuration Current Configurati...

Page 65: ...aracter has been entered Re enter information using valid characters Invalid Password Login is required and an incorrect password was entered access is denied Try again Contact your system administrat...

Page 66: ...sword field of the Administer Logins screen does not match what was entered in the Password field Try again Contact your system administrator to verify your password Please Wait Command takes longer t...

Page 67: ...an internal hardware failure Reset the unit Contact your service representative No power or the LEDs are not lit The unit is not properly seated in the DSLAM Verify that the unit is properly inserted...

Page 68: ...6 Messages and Troubleshooting 6 6 February 2001 8776 A2 GB20 40...

Page 69: ...vels Administrator and Operator The access level determines what functions are accessible as shown in Table 7 1 Access Levels Access level is also used to control access via Telnet If the Telnet Sessi...

Page 70: ...Logins 2 Select New and press Enter The Login Entry screen is displayed main control admin_logins Hotwire Slot 4 Model 8776 ADMINISTER LOGINS Page 1 of 1 Login ID newuser Access Level Administrator Ar...

Page 71: ...d follow this menu selection sequence Main Menu Control Administer Logins 2 Select PgUp or PgDn and press Enter to page through login pages records until you find the one to be deleted 3 Once the corr...

Page 72: ...nagement Options in Appendix A Configuration Options to Enable SNMP Management Assign the SNMP community names of the SNMP Managers that are allowed to access the units Management Information Base MIB...

Page 73: ...assigned you can use the ATI to assign Peer IP addresses to the four DSL ports These addresses are used as the IP addresses of the remote units See Table A 1 Network Interface Options in Appendix A C...

Page 74: ...eer IP Address Assignments for an example of an IP addressing scheme In the example the Peer IP Address Refers to the IP address of the unit configured as an NTU Is assigned by the LTU Figure 8 1 Peer...

Page 75: ...tion Select To Access the To Configure the Network Network Interface Options Table A 1 DSL network interface Ports 1 4 G 703 Interface G 703 Interface Options Table A 2 G 703 interfaces 1 4 Copy Ports...

Page 76: ...condition is recognized 5db to 10db Sets the margin threshold to this value Excessive Error Rate Threshold Possible Settings 1E 4 1E 5 1E 6 1E 7 1E 8 1E 9 Default Setting 1E 6 Determines the error ra...

Page 77: ...and DSL Line Rates in Chapter 3 Initial Startup and Configuration Peer IP Address Possible Settings 001 000 000 000 223 255 255 255 Clear Default Setting 000 000 000 000 Specifies the peer IP address...

Page 78: ...en follow this menu selection sequence Main Menu Configuration Current Configuration G 703 main config G 703 Hotwire Slot 4 Model 8776 Port 3 G 703 INTERFACE OPTIONS Port Status Enable Framing Framed...

Page 79: ...led Line Coding Possible Settings AMI HDB3 Default Setting HDB3 Specifies the line coding format to be used by the G 703 interface AMI Indicates the line coding format used by the G 703 interface is A...

Page 80: ...aken on the signal transmitted to the G 703 when a valid signal cannot be recovered from the network interface LOS or OOF Enable An Alarm Indication Signal AIS is sent to the DTE in the event an LOS o...

Page 81: ...s the source of the configuration options 1 4 The configuration of the selected port is copied To Port y Possible Settings 1 2 3 4 All Default Setting 2 Controls the target of the configuration option...

Page 82: ...the System Options screen follow this menu selection sequence Main Menu Configuration Current Configuration System main config system Hotwire Slot 4 Model 8776 SYSTEM OPTIONS DSL Mode LTU Test Timeou...

Page 83: ...is remotely managed so that control can be regained after a test is accidentally executed Enable Loopback and pattern tests end when test duration is reached Disable Tests run until manually terminat...

Page 84: ...determine what level of security applies to the session to control access Only one Telnet session is allowed at a time Initial values are determined by the configuration you currently have loaded To...

Page 85: ...for a Telnet session Session Access Level Possible Settings Administrator Operator Default Setting Administrator The Telnet session access level is interrelated with the access level of the Login ID...

Page 86: ...s automatically Timeout is based on no keyboard activity Disconnect Time minutes appears when Inactivity Timeout is enabled It does not appear when the unit is connected to a DSLAM card running in IP...

Page 87: ...nity name field Name 1 Access Possible Settings Read Read Write Default Setting Read Determines the access level for Community Name 1 Read Allows read only access get for Community Name 1 Read Write A...

Page 88: ...ement security Hotwire Slot 4 Model 8776 SNMP NMS SECURITY OPTIONS NMS IP Validation Enable Number of Managers 2 NMS 1 IP Address 135 014 040 001 Clear Access Type Read Write NMS 2 IP Address 135 014...

Page 89: ...s An NMS IP address is required for each manager NMS n IP Address Possible Settings 001 000 000 000 223 255 255 255 Clear Default Setting 000 000 000 000 Specifies the Internet Protocol address used t...

Page 90: ...t trap Hotwire Slot 4 Model 8776 SNMP TRAPS OPTIONS SNMP Traps Enable Number of Trap Managers 5 NMS 1 IP Address 135 014 040 001 Clear NMS 2 IP Address 135 014 003 027 Clear NMS 3 IP Address 135 014 0...

Page 91: ...55 Enter an address for each SNMP trap manager The range for the first byte is 001 to 223 with the exception of 127 The range for the remaining three bytes is 000 to 255 Clear Clears the IP address an...

Page 92: ...trap is generated when the unit recognizes that one of the communication interfaces is operational Down A linkDown trap is generated when the unit recognizes a failure in one of the communication int...

Page 93: ...ationFailure linkUp and linkDown warmStart authenticationFailure SNMP Trap Description Possible Cause warmStart The unit has reinitialized itself The trap is sent after the unit resets and stabilizes...

Page 94: ...ly into tables in other MIBs The values of ifIndex are the same for all models although not all indexes are supported for each model The ifIndex included with the trap consists of the slot number time...

Page 95: ...lure of one or more of the unit s hardware components enterpriseDeviceFail 3 An internal device failure Operating software has detected an internal device failure enterpriseTestStart 5 A test is runni...

Page 96: ...models although not all indexes are supported for each model The ifIndex included with the trap consists of the slot number times 1000 plus 2 DSL Interface Port 1 3 DSL Interface Port 2 4 DSL Interfa...

Page 97: ...lowing objects control tests in SNMP managed devices noTest Stops the test in progress testLoopLLB Initiates a Local Loopback testLoopRLB Initiates a Remote Loopback testSendMon511 Initiates a Send an...

Page 98: ...B Standards Compliance for SNMP Traps B 6 February 2001 8776 A2 GB20 40...

Page 99: ...ary 2001 C 1 C Connector Pin Assignments Overview This section lists the pin assignments for the front panel 50 pin DTE connector For information about the DSLAM connectors see the appropriate DSLAM i...

Page 100: ...e DTE The following table lists the pin assignments for each of these interfaces G 703 Port 50 Pin Connector Pinout Function Port 4 36 Data Out Ring 11 Data Out Tip 35 Data In Tip 10 Data In Ring Port...

Page 101: ...The Hotwire 8776 TDM SDSL Termination Unit contains a DC to DC converter that requires 48V power input The 48V power is distributed through the Hotwire DSLAM backplane Maximum Power Dissipation 19 wa...

Page 102: ...D Technical Specifications D 2 February 2001 8776 A2 GB20 40...

Page 103: ...ort A computer s serial communications port used to transmit to and receive data from a modem The modem connects directly to this port CP Customer Premises CPE Customer Premises Equipment Terminal equ...

Page 104: ...rror events or OOFs ESF Extended SuperFrame The T1 transmission standard that specifies 24 frames as an extended superframe to be used for frame synchronization and to locate signaling bits Ethernet A...

Page 105: ...A diagnostic procedure that sends a test message back to its origination point Used to test various portions of a data link in order to isolate an equipment or data line problem LOS Loss of Signal The...

Page 106: ...x or one way simplex connection TDM Time Division Multiplexer A device that enables the simultaneous transmission of multiple independent data streams into a single high speed data stream by simultane...

Page 107: ...ability 1 2 ceiling DSL Line Rate A 3 disabling enabling A 3 enabling disabling 3 10 resetting 3 11 B Btu hr D 1 C Change Identity information 3 2 Circuit Identifier A 3 Clock Failed status message 4...

Page 108: ...ion 2 9 ending tests 5 9 entering information about the unit 3 2 Enterprise Specific Traps A 18 B 3 environment requirements D 1 error messages line 24 6 3 statistics 4 6 Excessive Error Rate EER Thre...

Page 109: ...Margin Threshold A 2 MCC defined 1 2 IP addressing scheme 8 1 restoring access to the ATI 3 12 Memory Failed self test result 4 5 menu hierarchy 2 4 messages alarm and device 6 1 and troubleshooting...

Page 110: ...Device from Control menu 3 12 Reset Slot from MCC 3 12 resetting the AutoRate feature 3 11 the unit from the Control menu 3 12 restoring access to the ATI 3 4 3 12 S safety certifications D 1 saving...

Page 111: ...sive Error Rate A 2 Margin A 2 Time Slot 16 A 6 timeout Telnet session inactivity A 11 Test A 9 Traps enabling disabling A 17 Enterprise Specific A 18 B 3 general traps sent A 17 Link A 18 Link Interf...

Page 112: ...Index IN 6 February 2001 8776 A2 GB20 40...

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