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Chapter 1. Introduction

1202060L2-1

TSU LT User Manual

1-9

connection. Network and DTE interface loopbacks are
discussed in this section.

Network Loopbacks

There are three types of network loopbacks. See Figure 1-4.

Line Loopback

Loops all of the received data back toward the network. The
transmitted data is the identical line code that was received,
including any bipolar violations or framing errors.

Payload Loopback

Similar to line loopback, except that the framing is extracted
from the received data and then regenerated for the transmit-
ted data.

Data Loopback

Loops back all active DS0s and inserts idle code into unoccu-
pied DS0s.

Figure 1-4. Network Loopback Tests

Содержание 1202060L2-1

Страница 1: ...TSU LT User Manual Part Number 1202060L2 1 Document Number 1202060L2 1 February 1999...

Страница 3: ...ll products meet Y2K specifications regardless of model or revision Information about ADTRAN s Y2K compliance program is available at the fol lowing locations ADTRAN Web Site www adtran com Product Ma...

Страница 4: ...ty to maintain uninterrupted service 4 If you experience trouble with the TSU LT equipment please contact ADTRAN at 205 963 8000 for repair war ranty information The telephone company may ask you to d...

Страница 5: ...d can radiate radio frequency energy and if not installed and used in accor dance with the instruction manual may cause harmful interference to radio fre quencies Operation of this equipment in a resi...

Страница 6: ...lephone lines and internal metallic waterpipe sys tem if present are connected together This precaution may be particularly important in rural areas The Load Number LN assigned to each terminal device...

Страница 7: ...owl kitchen sink laundry tub in a wet base ment or near a swimming pool 2 Avoid using a telephone other than a cordless type dur ing an electrical storm There is a remote risk of shock from lightning...

Страница 8: ...ifications or if it fails while in service For detailed warranty repair and return information see the ADTRAN Equipment Warranty and Repair and Return Policy Procedure Return Material Authorization RM...

Страница 9: ...ol Port Input 1 6 Chain Port Output 1 7 Software Management 1 7 Front Panel 1 7 T Watch Pro Management Software Program 1 7 TSU LT Testing 1 8 Self test 1 8 Loopback Tests 1 8 DTE Interface Loopbacks...

Страница 10: ...t Panel 3 8 Chapter 4 Status Menu 4 1 STATUS 4 1 NI PERF RPTS 4 2 CURR ERR ALM 4 3 Alarms and Errors 4 4 ERR ALM Hist 4 5 Chapter 5 Configuration Menu 5 1 CONFIG 5 1 Network NI 5 2 FORMAT 5 2 CODE 5 2...

Страница 11: ...dress 6 3 Set Passcode 6 3 Fact Restore 6 3 Chapter 7 Test Menu 7 1 TEST 7 1 Network Tests 7 2 LOCAL LOOPBCK 7 2 REMOTE LOOPBCK 7 2 TEST PATTERN 7 3 CLR ERRORS 7 4 INSERT 511 ERRORS 7 4 Run Self test...

Страница 12: ...Table of Contents xii TSU LT User Manual 61202060L2 1 Control In Chain In C 2 Chain Out C 3 Nx56K 64K DTE V 35 C 4 Index Index 1...

Страница 13: ...3 5 Front Panel Layout 3 8 Figure 4 1 Status Menu 4 1 Figure 4 2 Severely Errored Seconds Screen 4 2 Figure 4 3 Loss of Signal Current Errors Alarms Screens 4 3 Figure 4 4 Clear History Screen 4 5 Fi...

Страница 14: ...8 1 Main Menu with TEST Selected 8 2 Figure 8 2 Test Menu with NETWORK TESTS Selected 8 2 Figure 8 3 Local Loopback Test Menu 8 3 Figure 8 4 Remote Loopback Test Menu 8 3 Figure 8 5 Test Pattern Scre...

Страница 15: ...al Mode Operation 5 10 Table 6 1 Editing the Time Date 6 2 Table B 1 DTE Data Rate vs DS0s B 1 Table C 1 Network Pin Assignments C 1 Table C 2 Control In Chain In Pin Assignments C 2 Table C 3 Chain O...

Страница 16: ...List of Tables xvi TSU LT User Manual 61202060L2 1...

Страница 17: ...nnel banks began to be used for T1 in corporate network topographies for voice The technological advances in computer development also created a demand for T1 data communication which now is a large p...

Страница 18: ...tween two points Most carriers offer fractional T1 in increments of 56 or 64 kbps Connection is made to the same network elements The network allows multiple users to share the same interoffice T1 ban...

Страница 19: ...rear panel to house an option module Each module offers up to four additional data ports TSU 600 Same as the TSU with the added feature of six slots in the rear panel to house up to six option module...

Страница 20: ...interface 2 In Bantam test jack 3 Out Bantam test jack 4 MON Monitor Bantam test jack 5 Chain In Interface of chain in 6 Chain Out Connects to chain in of another TSU LT 7 V 35 Nx56 64 DTE port 8 Pow...

Страница 21: ...test patterns Extensive self testing and monitoring ensures proper op eration Flexible channel allocation any starting channel and al ternate or contiguous TSU LT Interfaces The TSU LT is equipped wit...

Страница 22: ...oopbacks Extensive self testing Nx56 64 Serial Interface Features of the Nx56 64 serial interface include Data rates N 56K or N 64K where N 1 to 24 DS0s Inverted data inverted high level data link con...

Страница 23: ...tion on page 3 1 The menu options are found in Chapters 4 through 7 T Watch Pro Management Software Program T Watch Pro is the ADTRAN management software program that allows the user to control the TS...

Страница 24: ...anel menu or from the control port In addition to the specified self tests background tests are also run on various parts of the internal electronics These run during normal operation to confirm conti...

Страница 25: ...ll of the received data back toward the network The transmitted data is the identical line code that was received including any bipolar violations or framing errors Payload Loopback Similar to line lo...

Страница 26: ...on page 1 10 DTE Loopback Loops all data from the DTE back towards the DTE This loopback may be initiated by the DTE asserting the local loop back LL input on the connector or by using the front pane...

Страница 27: ...Circuit 511 The 511 pattern is generated and checked by the Nx56K 64K serial interface It only appears in the DS0s assigned to the Nx56K 64K port When used in conjunction with the payload loopback at...

Страница 28: ...Chapter 1 Introduction 1 12 TSU LT User Manual 1202060L2 1...

Страница 29: ...Customer Service If possible keep the original shipping container for use in shipping the TSU LT back for repair or for verification of damage during shipment Items Shipped by ADTRAN The following it...

Страница 30: ...elf Test Power to the TSU LT must be from a grounded 220 230 VAC 60 Hz power source When Then A power up or com manded self test oc curs The LCD displays ADTRAN TSU INITIALIZ ING and the LEDs illumina...

Страница 31: ...tructure containing both menu items and data fields All menu operations and data are displayed in the LCD window The menu items are numbered and can be viewed by using the Up and Down arrows Figure 3...

Страница 32: ...item has several functions and submenus to identify and access specific parameters Each main item menu contains a complete menu diagram to identify the location of each operation Menu Structure The TS...

Страница 33: ...d by the TSU LT ERR ALM HIST Used to view and clear history errors and alarms CONFIG The CONFIGURATION MENU is used to set the TSU LT operational configuration This menu includes the following sub ite...

Страница 34: ...ss used for control port access SET PASSCODE Allows a passcode to be set FACT RESTORE Restores factory default settings for all unit parameters TEST The TEST MENU is used to initiate different types o...

Страница 35: ...itional menu items are accessed with the Up or Down Arrows Undisplayed menu items are also available by using the appropriate menu number Example Menu Operations To select a menu item Step Action 1 Us...

Страница 36: ...ed to select an opening menu item 2 Use the Up and Down Arrows to place the cursor on the desired menu item In this example NETWORK NI The unit responds by displaying the first two available data fiel...

Страница 37: ...Down Arrows to scan the available value settings which display in the data field position one at a time 2 When the desired value is in the data field position press Enter to set the value The unit is...

Страница 38: ...on exists 4 TEST LED ON when unit is in test mode 5 TD LED ON when DTE data is being received 6 RD LED ON when DTE data is being received 7 RS LED ON when request to send RTS active from DTE 8 CS LED...

Страница 39: ...4 1 Figure 4 1 Status Menu RESET PERF CNTRS SES ES NI PERF RPTS AV EF LOSS OF SIGNAL CVs AIS ALARM CURR ERR ALM OUT OF FRAME STATUS YELLOW ALARM CLEAR HISTORY RED ALARM LOSS OF SIGNAL CODE VIOLATIONS...

Страница 40: ...played is data accumulated over the last 15 minutes and over the last 24 hours These fields cannot be edited only cleared as previously discussed Only the user copy of performance data is cleared See...

Страница 41: ...gure 4 3 Figure 4 3 Loss of Signal Current Errors Alarms Screens The Up and Down Arrows are used to access the complete display of the errors alarms that are currently active Since only the user s cop...

Страница 42: ...attern sync at NI Yellow Alarm Receiving yellow alarm pattern from NI Red Alarm Loss of signal out of frame LOS OOF causing red alarm at NI Code Violations Cyclic redundancy check CRC errors in ESF or...

Страница 43: ...and alarms If an alarm has occurred since the last CLEAR HISTORY selection the menu is active If the condition has not occurred then the menu is inactive see Figure 4 4 Figure 4 4 Clear History Screen...

Страница 44: ...Chapter 4 Status Menu 4 6 TSU LT User Manual 61202060L2 1...

Страница 45: ...allocation of the DS0s and the port parameters See Figure 5 1 Figure 5 1 Configuration Menu 1 FORMAT 2 CODE 3 YEL ALRM 4 XMIT PRM 5 CLOCK SOURCE 1 NETWORK NI 6 BIT STUFFING 7 SET LBO 8 RX SENSITIVITY...

Страница 46: ...items that include setting the format the line build out LBO and the clock source See Figure 5 2 Figure 5 2 Network Submenu The fields and parameters available are FORMAT Sets the frame format for the...

Страница 47: ...ansmission toward the network from the NI Choices NETWORK DTE INTERNAL TSU LT Clock Sources The TSU LT is operable from various clock sources permitting it to perform properly in many different applic...

Страница 48: ...referred to as looped timed as the transmission clock is derived from the received clock See Figure 5 3 Figure 5 3 Network Timed Clock Source DTE Timing The DTE is the source of timing The TSU LT uses...

Страница 49: ...t a one 1 when needed to maintain ones at 12 5 percent This option should be disabled if B8ZS is enabled if Nx56 is selected or if alternate channels are being used All of these other options already...

Страница 50: ...units and to initialize a modem and the control port data rate POSITION of TSU LT Determines if this TSU LT is at the head of a chain of units directly connected to the modem or PC The head of the cha...

Страница 51: ...ort This should be consistent with all units on a chain and with the modem and or PC Proxy Agent serial port Choices 1200 2400 9600 ALARMS Used to initialize the method by which the control port handl...

Страница 52: ...is entered into the TSU LT only upon pressing Enter after typing the semicolon Choices 20 digits 0 9 and Port The menu item PORT is used to select and then to configure the parameters associated with...

Страница 53: ...phase of the clock This feature will automatically select between the INTERNAL and INT INV settings If the DTE provides a clock with TX data the clock selection is set to EXTERNAL The TSU LT will depe...

Страница 54: ...ration channel See Figure 5 7 on page 5 11 When this option is set to ON the first DS0 occupied operates in 56K mode and the DTE clock rate is reduced by 8 kbps The TSU LT uses this 8 kbps channel to...

Страница 55: ...mapped the DTE rate would be 120 kbps instead of 128 kbps This menu option can also be set to AUTO which activates the Inband Channel only when commands are sent from T Watch to the remote unit TSU LT...

Страница 56: ...Chapter 5 Configuration Menu 5 12 TSU LT User Manual 61202060L2 1...

Страница 57: ...and resetting all parameters to factory values or to re initialize the unit This menu is also used to view the unit s software revision and the unit ID setting Figure 6 1 Utility Menu TIME HH MM SS 1...

Страница 58: ...enu to access the display of the current software revision level This information is required when requesting assistance from ADTRAN Customer Service or when updates are needed Table 6 1 Editing the T...

Страница 59: ...rs Address ADDRESS is used to access the current UNIT ADDRESS setting Unit identification numbers must be between 000 and 256 See Figure 6 3 Figure 6 3 Address Screen Set Passcode Set Passcode allows...

Страница 60: ...Chapter 6 Utility Menu 6 4 TSU LT User Manual 61202060L2 1...

Страница 61: ...est execution will disrupt some of the normal operation See in dividual menu items concerning tests before executing NO LOOPBACK 1 LOCAL LOOPBK LINE ON NO LOOPBACK PAYLOAD ON V 54 INBAND PLB 2 REMOTE...

Страница 62: ...rk interface NI Three different test configurations can be selected to determine the type of loopback and the pattern to run Test results are displayed in the LCD window See Figure 7 2 Figure 7 2 Loca...

Страница 63: ...Deactivates the loopback V 54 Inband PLB Indicates inband transmission of V 54 loopup pattern in channels occupied by DTE data only This choice should be used for public fractional network AT T Inban...

Страница 64: ...s Generates an all zero s pattern in every channel All Ones Generates an all one s pattern in every channel CLR ERRORS CLR ERRORS has two functions 1 It clears out the 511 error total when you press E...

Страница 65: ...sts are displayed in the LCD Upon invoking the command the LCD displays INITIALIZING and test failures are displayed in the LCD window see Figure 7 4 To initialize a self test proceed with the followi...

Страница 66: ...202060L2 1 Figure 7 4 Self Test Results Screen Port Tests Port Tests are used to control the activation of a DTE loopback This test loops data received at the V 35 interface back towards the DTE See F...

Страница 67: ...rom both ends and check at both ends Far End Looped Back Test Two types of tests can be executed with the far end looped The first is a check of the network and the network interfaces at both ends 511...

Страница 68: ...igure 8 2 Test Menu with NETWORK TESTS Selected Step Action 1 Use the Up and Down arrows to place the cursor on NETWORK TESTS 2 Press Enter to select 3 Press Enter again to enter the NETWORK TEST menu...

Страница 69: ...pback Test Menu The menu offers the following options Line On Payload On No Loopback The menu options for the REMOTE LOOPBACK TEST MENU are shown in Figure 8 4 on page 8 3 Figure 8 4 Remote Loopback T...

Страница 70: ...tern 1 8 all DS0s 511 Active DS0s All Zeros All Ones Step Action 1 Use the Up and Down arrows to place the cursor on REMOTE LOOPBK 2 Press Enter to select 3 Use the Up and Down arrows to set PAYLOAD i...

Страница 71: ...PATTERN sub menu 3 Use the Up and Down arrows to select 511 ACT DS0S 4 Press Enter to activate the selection Results The TSU LT always checks for 511 errors The results of this check are shown under s...

Страница 72: ...Chapter 8 Example Operations 8 6 TSU LT User Manual 61202060L2 1...

Страница 73: ...EAR HISTORY CVs RED ALARM LOSS OF SIGNAL STATUS CODE VIOLATIONS AIS ALARM BIPOLAR VIOL OUT OF FRAME FRAME BIT ERRORS YELLOW ALARM PLL ALARM RED ALARM CODE VIOLATIONS ERR ALM HIST BIPOLAR VIOLATIONS FO...

Страница 74: ...PASSCODE FACT RESTORE Returns all configurations to factory settings NO LOOPBACK MAIN MENU LOCAL LOOPBK LINE ON PAYLOAD ON NO LOOPBACK REMOTE LOOPBK V 24 INBAND PLB NETWORK TESTS ANSI FDL LLB NO PATTE...

Страница 75: ...ATE 64K N 1 56K 64K N 2 112K 128K N 3 168K 192K N 4 224K 256K N 5 280K 320K N 6 336K 384K N 7 392K 448K N 8 448K 512K N 9 504K 576K N 10 560K 640K N 11 616K 704K N 12 672K 768K N 13 728K 832K N 14 784...

Страница 76: ...Appendix B DTE Data Rate Chart B 2 TSU LT User Manual 61202060L2 1...

Страница 77: ...nector is used for connecting to the network See Table C 1 for the network connector pin assignments Table C 1 Network Pin Assignments Connector Type Product Number USOC RJ 48C AMP 555164 2 Pin Name D...

Страница 78: ...TSU chain out See Table C 2 for the pin assignment for this connector Table C 2 Control In Chain In Pin Assignments Connector Type Product Number RJ 48 AMP 555164 2 Pin Name Description 1 GND Ground c...

Страница 79: ...n Assignments Connector Type Product Number RJ 48 AMP 555164 2 Pin Name Description 1 GND Ground connected to unit chassis Connect to GND of next unit pin 1 2 UNUSED 3 TXDATA Data transmitted to chain...

Страница 80: ...r to send CTS to DTE E 107 Data set ready DSR to DTE F 109 Received line signal detector DCD to DTE H Data terminal ready DTR from DTE J Ring indicator RI L Local loopback LL N Remote loopback RL R 10...

Страница 81: ...nfig menu 5 5 Bridge Router Application 1 11 C CAPS Department v chain port output 1 7 chain in pin assignments C 2 chain out pin assignments C 3 channels config menu 5 8 clear to send CTS 5 10 clock...

Страница 82: ...front panel software management 1 7 I inband config channel 5 10 initialization power up 2 2 INSERT 511 ERRORS test menu 7 4 interfaces Nx56 64 1 6 interfaces TSU LT 1 5 internal timing config menu 5...

Страница 83: ...ower up 2 2 primary V 35 pin assignments C 4 Product Matrix iii Product Matrix Y2K information iii R rate 56 64 config menu 5 8 red alarm 4 4 REINIT UNIT util menu 3 4 reinit unit utility menu 6 3 REM...

Страница 84: ...TSU LT overview 1 2 TSU LT clock sources 5 3 TSU LT Features 1 5 TSU LT pattern generation 1 11 TSU LT testing 1 8 TSU LT main menu 3 1 TSU LT network interfaces 1 6 TSU LT packing list 2 1 T Watch P...

Страница 85: ...is needed Technical Support will coordinate with the Customer and Product Service CAPS depart ment to issue an RMA number For information regarding equipment currently in house or possible fees assoc...

Страница 86: ......

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