Paradyne 7510-A2-GB20-00 727 User's Manual
Contents
1. Wire Diameter AWG 19 Gauge 22 Gauge 24 Gauge 26 Gauge Data Rate 0359 or 0253 or 0201 or 0159 or kbps 9122 mm 643 mm 511 mm 404 mm 56 10 84 mi 6 4 mi 4 50 mi 3 34 mi 17 45 km 10 3 km 7 24 km 5 37 km 64 10 69 mi 6 06 mi 4 47 mi 3 20 mi 17 2 km 9 76 km 7 2 km 5 15 km March 1997 7510 A2 GB20 00 Glossary aggregate ASCII ASCII Terminal or Printer asynchronous AT Command Set ATI autobaud mode AUX port BPV CCA CCITT CD channel CMI COM port configuration option CPE CSU CTS DCE DDS 7510 A2 GB20 00 A single bit stream that combines two or more bit streams American Standard Code for Information Interchange A 7 bit code that establishes compatibility between data services ASCII is the standard for data transmission over telephone lines Devices that can be attached either locally or remotely to display or print the DSU s alarm messages A data transmission that is synchronized by a transmission start bit at the beginning of a character five to eight bits and one or more stop bits at the end Attention Command Set A group of commands issued from an asynchronous DTE that allows control of the modem while in Command mode All commands must begin with the characters AT and end with a carriage return Asynchronous terminal interface This feature allows a device to be controlled from an async asynchronous terminal like an A2. CTS Control Standard Follow RTS Forced On Circuit Assurance RLSD Control Standard Forced On DSR Control Standard Forced On On During Test Monitor DTR Enable Disable Terminal Port Configuration Option Settings Default in Bold Monitor DTR Enable Disable Inactivity Timeout Enable Disable Disconnect Time minutes range 1 60 5 March 1997 7510 A2 GB20 00 Cables and Pin Assignments Overview The following sections provide pin assignments for the m Terminal Port EIA 232 Connector m V 35 User Data Port Connector m Standard EIA 232 D Crossover Cable m LAN Adapter Converter and Cable m Modular RJ48S DDS Network Interface Cable 7510 A2 GB20 00 March 1997 Cables and Pin Assignments Terminal Port EIA 232 Connector C 2 The Terminal port connects to a PC or VT100 compatible terminal Signal Direction Pin Transmit Data TXD To DSU In 2 Received Data RXD From DSU Out 3 Request to Send RTS To DSU In 4 Clear to Send CTS From DSU Out 5 Data Set Ready DSR From DSU Out 6 Signal Ground SG 7 Carrier Detect CD From DSU Out 8 Data Terminal Ready DTR To DSU In 20 March 1997 7510 A2 GB20 00 Cables and Pin Assignments V 35 User Data Port Connector 7510 A2 GB20 00 The following table provides the pin assignments for the 34 position
3. Test Duration min option appears when Test Timeout is enabled 1 to 120 Amount of time in minutes for a user initiated test to run before terminating 7510 A2 GB20 00 March 1997 A 3 Configuration Option Tables Network Interface Options Menu For Network Interface Options refer to Table A 2 To access the Network Interface Options screen follow this menu selection sequence Main Menu Configuration Load Configuration From gt Configuration Edit Display Network Table A 2 Network Interface Options Network initiated DSU Loopback 64K CC Possible Settings Enable Disable Default Setting Enable Indicates whether the access unit responds to a DSU latching loopback sequence sent by the network as specified by TR62310 Network initiated DSU Loopback 64K CC option appears when Operating Mode is set to DDS in Table A 1 Enable Responds to network initiated commands to start and stop a latching DSU loopback Disable DSU will not respond to a DSU loopback initiated by the network Data Scrambling 64K CC Possible Settings Enable Disable Default Setting Disable Data scrambling is used to suppress the possible simulation of network initiated DSU latching loopback commands by application data Data Scrambling 64K CC option appears when Operating Mode is set to DDS in Table A 1 Enable Enables data scrambling The local and remote units must be set the sam
4. AREA CODE 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 MODEL 7510 DSU USER S GUIDE Document No 7510 A2 GB20 00 March 1997 Copyright 1997 Paradyne Corporation All rights reserved Printed in U S A Notice This publication is protected by federal copyright law No part of this publication may be copied or distributed transmitted transcribed stored in a retrieval system or translated into any human or computer language in any form or by any means electronic mechanical magnetic manual or otherwise or disclosed to third parties without the express written permission of Paradyne Corporation 8545 126th Avenue North P O Box 2826 Largo Florida 33779 2826 Paradyne Corporation makes no representation or warranties with respect to the contents hereof and specifically disclaims any implied warranties of merchantability or fitness for a 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 Trademarks All products and servic
5. V 35 connector to the User Data terminal equipment 34 Pin ITU Socket Signal CT Direction Connector Signal Ground Common 102 B Request to Send RTS 105 To DSU In C Clear to Send CTS 106 From DSU Out D Data Set Ready DSR 107 From DSU Out E Received Line Signal Detector 109 From DSU Out F RLSD or LSD Data Terminal Ready DTR 108 1 2 To DSU In H Remote Loopback RL 140 To DSU In N Local Loopback LL 141 To DSU In L Transmitted Data TXD 103 To DSU In P A S B Received Data RXD 104 From DSU Out R A T B Transmitter Signal Element Timing 113 To DSU In U A DTE Source XTXC or TT W B Receiver Signal Element Timing 115 From DSU Out V A DCE Source RXC X B Transmitter Signal Element Timing 114 From DSU Out Y A DCE Source TXC AA B Test Mode Indicator TM 142 From DSU Out NN March 1997 C 3 Cables and Pin Assignments Standard EIA 232 D Crossover Cable A standard crossover cable can be used to connect the Terminal port to an external modem Pin 14 Pin 1 Pin 4 Pini4 Pin 13 Pin 25 Pin 25 Pin 13 P1 Pin Pin P2 Chassis Ground 1 1 Chassis Ground TXD 2 2 TXD RXD 3 3 RXD RTS 4 4 RTS 5 5 DSR 6 6 DSR Signal Ground 7 7 Signal Ground CD RLSD 8 8 CD RLSD RXC RXC DTR DTR XTXC XTXC 97 15180 01 C 4 March 1997 7510 A2 GB20 00 Cable
6. A device that makes decisions about the paths network traffic should take and forwards that traffic to its destination A router helps achieve interoperability and connectivity between different vendor s equipment regardless of protocols used An EIA standard for the 25 pin DCE DTE interface Same as EIA 232 Request to Send An EIA lead standard for V 24 circuit CT 105 an input signal DTE to DCE Received Clock An ElA lead standard for V 24 circuit CT 115 an output signal DCE to DTE Received Data An EIA lead standard for V 24 circuit CT 104 an output signal DCE to DTE Synchronous Data Link Control A standard data link protocol Data transmission that is synchronized by timing signals Characters are sent at a fixed rate Time Division Multiplexer A device that enables the simultaneous transmission of multiple independent data streams into a single high speed data stream Test Mode An EIA lead standard for V 24 circuit CT 142 an output signal DCE to DTE Transmit Clock An EIA lead standard for V 24 circuit CT 114 an output signal DCE to DTE Transmit Data An EIA lead standard for V 24 circuit CT 103 an input signal DTE to DCE ITU T standard for a high speed 34 pin DCE DTE interface Wide Area Network A network that operates over long distances and spans a relatively large geographic area e g a country March 1997 GL 3 Index Numbers 511 test pattern 5 6 5 7 A alarm conditi
7. Add or change information on a screen Input or edit fields that have an Underline in the field value or selection See Screen Work Areas Display Display configuration information and results from performance and DSU specific tests Display only fields that have no underline in the field value What Affects Screen Displays What appears on the screens depends on the m Current configuration How the DSU is currently configured m Data selection criteria What you entered in previous screens 7510 A2 GB20 00 March 1997 2 3 Using the Asynchronous Terminal Interface Screen Work Areas There are two user work areas m Screen area This is the area above the dotted line that provides the menu path menus and input fields The menu path appears as the first line on the screen In this manual the menu path is presented as a menu selection sequence with the names of the screens Main Menu Configuration Load Configuration From gt Configuration Edit Display Data Port Options m Screen function key area This is the area below the dotted line that lists function keys specific to the screen field value choices and system messages Menu Path main configuration edit port Device Name Node A Model 7510 DATA PORT OPTIONS Invert Transmit Clock Disable Port DTE Initiated Loopbacks Disable Bilateral Loopback Disable Carrier Control by RTS Constant CTS Control Standard Input Fields RLS
8. Allow test to continue Already Active or DTE Local Loopback or Select ther test a Send 511 or Monitor 511 eect another test The test was already in m Stop the test progress when another selection was made March 1997 6 1 Messages and Troubleshooting 6 2 Table 6 1 Device Messages 2 of 2 Device Message What Message Indicates What To Do Invalid Test A loopback or 511 pattern Wait until other test ends and Combination test was in progress when message clears Start was selected to start another test or was active Abort all tests from the Test on the same or another menu sereen interface when Start was Stop the test from the same selected screen the test was started from Please Wait Command takes longer Wait until message clears than 5 seconds Test Active A test is running and no Contact service provider if test higher priority health and status messages exist initiated by the network Wait until the other test ends and message clears Cancel all tests from the Test screen Stop the test from the same screen the test was started from March 1997 7510 A2 GB20 00 7510 A2 GB20 00 Troubleshooting Messages and Troubleshooting This DSU is designed to provide you with many years of trouble free service If a problem occurs however refer to Table 6 2 for possible solutions Table 6 2 Troubleshooting 1 of 2 Symptom Pos
9. B 1 C Cables and Pin Assignments OVEIVIBW uoces ethEr EX OPERE a e pa v ee ex Hw RN eR ARA C 1 Terminal Port EIA 232 Connector 00 aa C 2 V 35 User Data Port Connector 0 0 c cee eee C 3 Standard EIA 232 D Crossover Cable 0 cc cece een eens C 4 LAN Adapter Converter and Cable 0 ccc eee ee eee eee es C 5 Modular RJ48S DDS Network Interface Cable C 5 D Technical Specifications Glossary Index 7510 A2 GB20 00 March 1997 iii About This Guide Document Purpose and Intended Audience This guide contains information needed to set up configure and operate the Model 7510 DSU and is intended for installers and operators Document Summary 7510 A2 GB20 00 Section Chapter 1 Chapter 2 Chapter 3 Chapter 4 Chapter 5 Chapter 6 Appendix A Appendix B Appendix C Appendix D Description About the DSU Describes the DSU features and shows examples of typical configurations Using the Asynchronous Terminal Interface Provides instructions for accessing the user interface and navigating the screens Customizing the DSU Provides procedures for setting up the user interface and DSU configuration Monitoring the DSU Describes monitoring details about the LEDs DSU status and network statistics Testing Provides details about available tests and test setup Messages and Troubleshooting Provides information on device messages and
10. LADS Default Setting DDS The unit s operating mode depends upon the DSU s application DDS Standard DDS network operation The operating rate is either 56 kbps or 64 kbps CC LADS The Local Area Data Set operating mode requires that the local and remote units are connected directly to each other This is a point to point application also known as LDM DDS Line Rate Kbps Possible Settings 56 64CC Autobaud Default Setting Autobaud The unit starts up with Autobaud When the DDS line rate obtained from the service provider is detected Autobaud is replaced with the actual rate DDS Line Rate Kbps option appears when Operating Mode is set to DDS NOTE Setting the actual data rate will result in minimum power up time Configuring the actual data rate is recommended after initial installation 56 56 kbps line rate 64CC 64 kbps Clear Channel on a 72 kbps circuit Autobaud This setting is automatically changed to the actual operating line rate of 56 kbps or 64CC as soon as the signal is detected LADS Timing Possible Settings Internal External Receive Default Setting Receive Determines the timing source for the unit LADS Timing option appears when Operating Mode is set to LADS Internal Timing derived from the unit s local clock Use this setting for the LADS primary timing unit that establishes the timing for both point to point units External Timing is derived fro
11. March 1997 6 3 Messages and Troubleshooting Table 6 2 Troubleshooting 2 of 2 Symptom Possible Cause Solutions Not receiving data DSU is not responding DDS line rate speed has changed Excessive BPVs causing DSU to become stuck in Autobaud mode Excessive Loop Loss causing DSU to become stuck in Autobaud mode 1 Verify that your subscriber loop is If getting Excessive BPVs verify If getting excessive Loop Loss If the DDS Line Rate Kbps field Run Loopback tests Refer to running at 56 or 64 CC kbps that you do not have a bad cable If the cable is good contact the network provider dB indications install a higher quality cable Refer to Table D 2 in Appendix D Model 7510 DSU LADS Connection Distances shows Autobaud the DSU may be stuck in Autobaud mode Configure Line Rate Kbps for 56 or 64 kbps Running Network Tests in of Chapter 5 Power Up Self Test fails Only Alarm LED is on after power up The DSU has detected an internal hardware failure Reset the DSU and try again Contact your service representative Resetting the DSU The DSU can be reset locally or remotely To reset the DSU follow this menu selection sequence Main Menu Control Reset Device The DSU reinitializes itself performing a Device Self Test Refer to Self Test Results Messages Table 4 3 Displaying DSU Identity Information To
12. Tables A 6 Table A 3 Data Port Options 2 of 3 Carrier Control by RTS Possible Settings Constant Switched Default Setting Constant Simulates Constant or Switched Carrier operation Constant The internal RTS is forced on and the DSU is in a constant Data Mode on the transmit line The external RTS lead is ignored The actual signal on the line is either all ones DMI or DTE transmitted data Switched RTS is monitored and CMI codes are transmitted when RTS is off CTS Control Possible Settings Standard Follow RTS Forced On Circuit Assurance Default Setting Standard Specifies the operation of the Interchange Circuit CT106 Clear to Send CTS which is an output from the DSU Standard CTS follows the internal RTS with a fixed delay except that CTS will be off when a network interface related alarm is detected or a test is active The active test may be initiated locally remotely or by the network Follow RTS CTS follows the external RTS lead without delay regardless of alarms and tests Forced On CTS is always forced on after the unit is powered up with a successful self test Circuit Assurance With circuit assurance CTS operates the same as the Standard option except that CTS will also be deasserted when CMI codes are being received RLSD Control Possible Settings Standard Forced On Default Setting Standard Specifies the operation of the Interchange Circ
13. detected an alarm condition locally or from the network Refer to the Troubleshooting section in Chapter 6 TEST ON Test in progress Test can be initiated locally remotely or from the network Includes power up self test 9 So er FG UB PIDODO etwork mr Pm Port red green yellow 496 15062 March 1997 4 9 Monitoring the DSU Network LEDs DM Data Mode ON DSU DDS network interface is sending or receiving data or is in DMI condition all 1s being received OFF DDS network interface is receiving CMI codes OOS Out of Service ON DSU is receiving out of Service code from the remote unit Refer to Health and Status Messages Table 4 2 OOF Out of Frame ON DSU is detecting an out of frame condition Refer to Health and Status Messages Table 4 2 NS No Signal ON DDS network interface detects no signal Refer to Health and Status Messages Table 4 2 E 7 L System Network L Port red green yellow 496 15062 4 10 March 1997 7510 A2 GB20 00 Port LEDs 7510 A2 GB20 00 Monitoring the DSU PN NO A A D c amp S aw om Fu SE N a 5 B d B B etwork mr L Port z red green yellow 496 15062 TXD Transmitted Data ON Receiving all Os from the DTE OFF Receiving all 1s from the DTE Blinking User data is being transferred RXD Received Data O
14. display the DSU s system name location contact serial number model number and software and hardware revision numbers follow this menu selection sequence Main Menu Status Identity 6 4 March 1997 7510 A2 GB20 00 Configuration Option Tables Overview 7510 A2 GB20 00 The tables in this appendix summarize the configuration options accessed when you select Configuration on the Main Menu The configuration options are arranged into groups based upon functionality Select To Access the To Configure the System System Options Table A 1 General system options Network Network Interface Options Table A 2 DDS network interface Data Port Data Port Options Table A 3 User data on DTE port Terminal Port Terminal Port Options Table A 4 ATI NOTE All changes to configuration options must be saved Refer to Saving Configuration Options in Chapter 3 MAIN MENU Configuration Status Edit Display Test Load System Configuration Configuration Network Data Port Terminal Port 497 15239 Control From March 1997 A 1 Configuration Option Tables System Options Menu A 2 For System Options refer to Table A 1 To access the System Options screen follow this menu selection sequence Main Menu Configuration Load Configuration From gt Configuration Edit Display gt System Table A 1 System Options 1 of 2 Operating Mode Possible Settings DDS
15. main menu 2 2 p 3 menu tree 2 2 messages alarm and device health and status 4 3 1 4 self test results test status 4 5 IN 2 N navigating the screens network interface cable interface LEDs interface options interface status loopbacks 5 4 performance statistics 4 7 tests 5 3 NS no signal LED O OK LED OOF out of frame LED 4 10 OOS out of service LED 4 10 options configuration areas 3 3 configuration tables configuration worksheets B 1 overview of DSU features of user s guide M P performance network statistics pin assignments port LEDs 4 11 Power On Self Test problems Alarm LED on ATI detecting Device Fail error message no data 6 4 March 1997 7510 A2 GB20 00 R rear panel connections 1 4 reset device revision numbers RJ48S network interface cable RTS request to send LED RXD received data LED S safety instructions See Start Up Instructions saving option changes screen function keys screen work areas screens for user interface self test self test results serial number software revision number specifications start up ATI statistics of network performance status indicators on front panel network interface of DSU 4 2 4 3 test messages 4 5 Status menu 4 2 f 6 E 4 8 switching screen areas system device name field LEDs System and Test Status branch S
16. tests commanded by the Network such as the network initiated CSU and DSU Loopbacks DTE such as the DTE initiated Local Loopback On each test screen is a command column Pressing Return when the cursor is on the Stop command stops the test Use the Abort All Tests selection from the Test menu to stop all tests running on all interfaces with the exception of network or DTE initiated loopbacks Command Complete appears when all tests on all interfaces have been terminated March 1997 7510 A2 GB20 00 Messages and Troubleshooting Messages and Troubleshooting There are many messages available to assess the status of the device and contribute to problem resolutions Refer to the following sections m Responding to Device Messages m Troubleshooting Responding to Device Messages 7510 A2 GB20 00 The Device Messages in Table 6 1 listed in alphabetical order may appear in the messages area at the bottom of the ATI screens Table 6 1 Device Messages 1 of 2 Device Message What Message Indicates What To Do Command Complete Action requested has No action needed successfully completed Invalid Character x A nonprintable ASCII Reenter information using valid character has been characters entered Invalid Network Network initiated loopback No action needed Initiated CSU or DSU was in progress when Loopback Active another selection was made Invalid Test Test can be a CSU DSU
17. troubleshooting Configuration Option Tables Contains all configuration options default settings and possible settings Worksheets Contains all the configuration options default settings and possible settings to use for planning Cables and Pin Assignments Contains connector and interface details Technical Specifications Contains physical and regulatory specifications of the DSU March 1997 About This Guide Section Description Glossary Defines acronyms and terms used in this document Index Lists key terms acronyms concepts and sections in alphabetical order Product Related Documents Document Number Document Title 7510 A2 GN10 Model 7510 DSU Startup Instructions To order additional product documentation refer to Warranty Sales and Service Information on page A at the beginning of this User s Guide vi March 1997 7510 A2 GB20 00 About the DSU Model 7510 DSU Features The DSU provides an interface between the customer premises equipment CPE and a Digital Data Service DDS network The DSU s features and capabilities include 7510 A2 GB20 00 Easy Installation Connects to your equipment using standard connectors and cables Easy Configuration A compact and well thought set of configuration options minimizes your customization effort DDS Operation Operates at 56 and 64 kbps CC clear channel Local Area Data Set LADS Operation Operates at 56 and 64 kbps full duplex as a limite
18. Commission Board of Commissioners that regulates all U S interstate intrastate and foreign electrical communication systems that originate from the United States A switching interface that is designed to get frames from one part of the network to another as quickly as possible The capability to transmit in two directions simultaneously High Level Data Link Control A communications protocol defined by the International Standards Organization ISO A shared boundary between functional units International Telecommunication Union formerly known as CCITT An advisory committee established by the United Nations to recommend communications standards and policies Local Area Data Set is used to provide a point to point link between two devices also called LDM limited distance modem Local Area Network A network designed to connect devices over short distances like within a building A latching loopback can only be initiated or terminated by the 64 kbps clear channel network service provider Light Emitting Diode A status indicator that responds to the presence of a certain conditions The protocol that regulates the communication between two network nodes Local Loopback An EIA lead standard for V 24 circuit CT 141 an input signal DTE to DCE Used to test various portions of a data link in order to isolate an equipment or data line problem A diagnostic procedure that sends a test message back to its origination po
19. D Control Standard DSR Control Standard Monitor DTR Enable Screen Ctrl a to access these functions ESC for previous menu MainMenu Exit Function Save Keys Select Disable Enable No Signal Field Value System Choices Messages 2 4 March 1997 7510 A2 GB20 00 Using the Asynchronous Terminal Interface Navigating the Screens Keyboard Keys 7510 A2 GB20 00 You can navigate the screens by m Using keyboard keys m Using screen function keys Switching between the two screen work areas Use the following keyboard keys to navigate within the screen To Press Move cursor between the screen area and the screen function Ctrl a keys area below the dotted line at the bottom of the screen Return to the previous screen Esc Move cursor to the next field on the screen Tab Accept entry or display valid options on the last row of the screen Return Enter when pressed before entering data or after entering invalid data Move cursor to the previous field Ctrl k 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 right in a text field Right Arrow or Ctrl f Move cursor one character to the left in a text field Left Arrow or Ctrl b Redraw t
20. Device Name screen information 1 Position the cursor in the Device Name field Enter a name unique in your system to identify the unit The maximum length of Device Name is 20 characters Position the cursor in the System Name field Enter a name unique in your network to identify the system The maximum length of System Name is 127 characters Position the cursor in the System Location field Enter the physical location of the system The maximum length of System Location is 127 characters Position the cursor in the System Contact field Enter the name and contact information for the person responsible for the unit The maximum length of System Contact is 127 characters Save the Device Name screen information as shown in the next section Saving Configuration Options 3 2 When changes are made to the configuration options the changes must be saved to take effect Use the Save key or Save Configuration screen gt Procedure To save configuration options changes 1 Press Ctrl a to switch to the screen function key area below the dotted line 2 Select Save and press Return NOTE When Exit is selected before Save a Save Configuration screen appears requiring a Yes or No response If you select Then Yes The configuration is saved No The Main Menu appears and changes are not saved March 1997 7510 A2 GB20 00 Customizing the DSU Configuring the DSU Configuration option se
21. Exit Testing Local Loopback Local Loopback loops the user data back to the DTE This loopback is located as closely as possible to the User Data Port DTE interface p Procedure To run a local loopback 1 Position the cursor at the Start command next to Local Loopback on the Data Port Tests screen 2 Press Enter 3 The Start command is changed to Stop If you want to manually stop the test verify that the cursor is positioned at the Stop command 4 Press Enter The duration of the test is displayed DTE DDS PIE Interface Aggregate Network Port Port Local Loopback 496 15145 511 Test Pattern for the DTE This test sends or monitors a 511 test pattern over the User Data Port interface p Procedure To run a Send 511 test 1 Position the cursor at the Start command next to Send 511 on the Data Port Tests screen 2 Press Enter 3 The Start command is changed to Stop If you want to manually stop the test verify that the cursor is positioned at the Stop command 4 Press Enter The duration of the test is displayed 5 8 March 1997 7510 A2 GB20 00 Testing B gt Procedure To run a Monitor 511 test 1 Position the cursor at the Start command next to Monitor 511 on the Data Port Tests screen 2 If desired use Ctrl a to switch to the screen function key area and use the virtual function key r or R ResetMon to clear the error counter to zero Press Ctrl a to return the cursor to the Start comman
22. N Sending all Os to the DTE OFF Sending all 1s to the DTE Blinking User data is being transferred RTS Request to Send ON DTE is activating a control signal to indicate readiness to transmit data CTS Clear to Send ON DSU is activating a control signal to indicate to the DTE that it can start sending data DTR Data Terminal Ready ON DTE is activating a control signal to indicate readiness for operation March 1997 4 11 Testing Accessing the Test Menu From the Test menu you can run network tests data port tests and a lamp test for the front panel LEDs To access the Test menu follow this menu selection sequence Main Menu Test main test Device Name Model 7510 TEST Network Tests Data Port Tests Lamp Test Abort All Tests Ctrl a to access these functions The DSU supports independent tests at the physical level m The CSU and DSU loopbacks and 511 test pattern send monitor are supported on the network interface m The Local Loopback and 511 test pattern send monitor are supported on the DTE port 7510 A2 GB20 00 March 1997 5 1 Testing 5 2 Loopbacks can be started from a variety of points in the network as shown in Table 5 1 Table 5 1 Device Messages Loopback Type Initiated By Notes Bilateral Loopback User Remote unit sending V 54 sequence When enabled running a DSU loopback also automatically starts a local loopback Refe
23. SCII VT100 compatible terminal An operational mode in which the DSU forces automatic setting of the DDS line rate speed 56 or 64 kbps as soon as a valid DDS network signal is detected The auxiliary communications port on a router Bipolar Violation A modified bipolar signaling method in which a control code is inserted Circuit Card Assembly A printed circuit board to which separate components are attached Consultative Committee on International Telegraphy and Telephony See ITU Carrier Detect A signal indicating that energy exists on the transmission circuit Associated with Pin 8 on an EIA 232 interface An independent data path Control Mode Idle A control signal sent over the DDS line to indicate that no data is being sent Communications port A computer s serial communications port used to transmit to and receive data from a DCE The DCE connects directly to this port Device software that sets specific operating parameters for the DSU Customer Premises Equipment Terminating equipment supplied by either the customer or some other supplier that is connected to the telecommunications network e g DSUs terminals phones routers modems Channel Service Unit The function of the DSU that protects the T1 line from damage and regenerates the T1 signal Clear to Send An EIA lead standard for V 24 circuit CT 106 an output signal DCE to DTE Data Communications Equipment The equipment that provides the functi
24. alid bipolar violations In the last column hhh mm ss indicates the amount of time the condition has existed in hours minutes and seconds When the maximum time has been exceeded 255 59 59 appears The screen appears with the cursor in the function area below the dotted line To update the performance statistics select Refresh and press Return Select ClrStats and press Return to clear all statistics and refresh the screen 7510 A2 GB20 00 March 1997 4 7 4 8 Monitoring the DSU Monitoring the LEDs The status of DSU LEDs can be viewed on the Display LEDs Status screen The 12 LEDs are organized into three groups System LEDs display the status of the unit m Network LEDs display the status of the network interface Port LEDs display the activity on the user data DTE port To view the LED status screen follow this menu selection sequence Main Menu Status gt Display LEDs main status leds Device Name Model 7510 DISPLAY LEDS SYSTEM NETWORK ALARM TEST DM OOS OOF ESC for previous menu MainMenu Exit Refresh When viewed via the ATI the status display screen is updated approximately every 5 seconds Use Refresh to obtain a current status of all LEDs March 1997 7510 A2 GB20 00 System LEDs 7510 A2 GB20 00 Monitoring the DSU OK ON DSU is operational OFF DSU is performing a power up self test has detected a system failure or there is no power ALARM ON DSU has
25. command is changed to Stop If you want to manually stop the test verify that the cursor is positioned at the Stop command 4 Press Enter The duration of the test is displayed Aggregate DTE Interface DSU Loopback 496 15160 DDS Network Port DTE Port Send V 54 Up Down Sequences The local DSU can send an ITU T V 54 Up or Down sequence to request the activation or termination of a DSU digital loopback of a remote unit This is the same as the DSU Loopback shown above except the test is activated remotely The DSU can send m In band V 54 Up activation code to request a Remote DSU Loopback V 54 Loop 2 at the remote DSU or m In band V 54 Down deactivation code to request the termination of a Remote DSU Loopback V 54 Loop 2 at the remote DSU B gt Procedure To start or stop a remote DSU loopback 1 Position the cursor at the Send command next to Send V 54 Up or Send V 54 Down on the Network Tests screen 2 Press Enter Sending appears in the Status column followed after 3 seconds by Command Complete at the bottom of the screen Refer to Running Network Tests for an example of the Network Tests screen 7510 A2 GB20 00 March 1997 5 5 Testing 511 Test Pattern for the Network 5 6 This test sends or monitors the 511 test pattern over the network interface p Procedure To run a Send 511 test 1 Position the cursor at the Start command next to Send 511 on the Network Tests scre
26. d 3 Press Enter 4 The Start command is changed to Stop If you want to manually stop the test verify that the cursor is positioned at the Stop command 5 Press Enter The duration of the test is displayed The 511 monitor expects the external equipment to provide the clock for the 511 pattern on the interchange circuit CT113 TT for timing the incoming pattern Refer to V 35 User Data Port Connector in Appendix C Running the Lamp Test The DSU supports a Lamp test from the Test menu to determine whether all LEDs light up During the Lamp test all LEDs blink simultaneously once per second When you stop the Lamp test the LEDs are restored to their normal condition To access the Data Port Tests screen follow this menu selection sequence Main Menu gt Test 5 Lamp Test B gt Procedure To run a Lamp test 1 Position the cursor at the Start command next to Lamp Test on the Lamp Test Screen 2 Press Enter 3 The Start command is changed to Stop When you want to stop the test verify that the cursor is positioned at the Stop command 4 Press Enter 7510 A2 GB20 00 March 1997 5 9 Testing Ending an Active Test 5 10 A test initiated by the user can be ended by the user A Test Timeout option is available to automatically terminate a user initiated Loopback or Pattern test after it has been running a specified period of time Refer to System Options Table A 1 Test Timeout does not pertain to
27. d distance modem Autorating Automatically adjusts to the detected line rate Data Port Rates Automatically adjusts to the DDS or LADS operating rates Asynchronous Terminal Interface ATI Provides a menu driven VT100 compatible interface for configuring and managing the DSU Local Management Provides local management using an asynchronous terminal connection through the Terminal port Remote Management Provides remote management using an external modem through the Terminal port Diagnostics Lets you diagnose device and network problems with digital loopbacks and pattern tests Device and Test Monitoring Lets you track and evaluate the unit s operation with status and test result information March 1997 1 1 About the DSU Typical DSU Configurations 1 2 The following illustration shows a typical LAN WAN interconnection application for the DSU The routers connected to the DSU at each location provide the LAN interconnection DDS SS ES d Sa SR 7 DSU DSU 497 15084 01 The DSU can also be used in a Frame Relay network Pe Frame Router is P Relay P Router NNA Network DSU DSU 497 15271 Two DSUs can be connected back to back to act as Local Area Data Sets 56 Kbps Router x DS LSS Z Router DSU DSU 497 15236 Table D 2 in Appendix D shows the maximum distances for LADS applications March 1997 7510 A2 GB20 00 About the DSU User Interfaces There are two types of user interfaces fo
28. dition has existed in hours minutes and seconds When the maximum time has been exceeded 255 59 59 appears March 1997 4 3 Monitoring the DSU Self Test Results 4 4 Table 4 2 Health and Status Messages 2 of 2 Message What Message Indicates What To Do Device Fail An internal error has been 1 Provide the 8 digit failure code Yyyyyyyy detected by the operating shown yyyyyyyy to your service software yyyyyyyy indicates representative ens nexacgema Hall 2 Reset the DSU to clear the condition and message DSU Operational DSU is functioning properly No action needed and there are no status messages to display The results of the last power up or reset self test appear in the middle column of the System and Test Status screen Table 4 3 Self Test Results Messages Message What Message Indicates What To Do Device Fail One or more of the DSU s integrated 1 Reset the DSU and try again circuit chips has failed device level 1 2 Call your service testing representative for assistance if Memory Fail DSU failed memory verification the message reappears Passed The DSU has been plugged in or reset and has passed the diagnostic test There are no other status messages No action needed March 1997 7510 A2 GB20 00 Test Status Messages 7510 A2 GB20 00 Monitoring the DSU The Test Status Messages in the following table appear
29. e Disable No data scrambling V 54 Initiated DSU Loopback Possible Settings Enable Disable Default Setting Disable When enabled user data is looped back to the network when a V 54 Loop Up sequence is received The DSU loopback ends when a V 54 Loop Down sequence is detected Enable DSU loopback can be initiated or terminated by a remote unit sending in band V 54 Loop 2 Up or Down sequences Disable V 54 Loop 2 sequences are ignored A 4 March 1997 7510 A2 GB20 00 Configuration Option Tables Data Port Options Menu 7510 A2 GB20 00 For Data Port Options refer to Table A 3 To access the Data Port Options screen follow this menu selection sequence Main Menu Configuration Load Configuration From gt Configuration Edit Display Data Port Table A 3 Data Port Options 1 of 3 Invert Transmit Clock Possible Settings Enable Disable Default Setting Disable The DSU clock provided on Interchange Circuit CT114 Transmit Signal Element Timing DCE source TXC is phase inverted with respect to Interchange Circuit CT103 Transmitted Data TXD Recommended when data errors are occurring due to long cable lengths Enable The DSU supplied clock is phase inverted with respect to the transmitted data TXD Disable The clock supplied by the DSU on TXC is normal i e not inverted Port DTE Initiated Loopbacks Possible Settings Disable Local Remote Bot
30. en Press Enter The Start command is changed to Stop If you want to manually stop the test verify that the cursor is positioned at the Stop command Press Enter The duration of the test is displayed p Procedure To run a Monitor 511 test 1 Position the cursor at the Start command next to Monitor 511 on the Network Tests screen If desired use Ctrl a to switch to the screen function key area and use the virtual function key r or R ResetMon to clear the error counter to zero Press Ctrl a to return the cursor to the Start command Press Enter The Start command is changed to Stop If you want to manually stop the test verify that the cursor is positioned at the Stop command Press Enter The duration of the test is displayed Refer to Running Network Tests for an example of the Network Tests screen March 1997 7510 A2 GB20 00 Running Data Port Tests Testing For an example of the fields on a test menu screen refer to Running Network Tests To access the Data Port Tests screen follow this menu selection sequence Main Menu Test Data Port Tests main test port Device Name Node A Test DATA PORT TESTS Command Status Model 7510 Result Local Loopback Send 511 Monitor 511 Start Inactive Start Inactive Stop Active Ctrl a to access these functions ESC for previous ResetMon 7510 A2 GB20 00 March 1997 000 00 00 000 00 00 255 59 59 Errors 99999 MainMenu
31. es mentioned herein are the trademarks service marks registered trademarks or registered service marks of their respective owners Warranty Sales and Service Information Contact your sales or service representative directly for any help needed For additional information concerning warranty service repair spare parts installation documentation or training use one of the following methods m Via the Internet Visit the Paradyne World Wide Web site at http www paradyne com Via Telephone Call our automated call system to receive current information via fax or to speak with a company representative Within the U S A call 1 800 870 2221 International call 813 530 2340 FO Printed on recycled paper A March 1997 7510 A2 GB20 00 Contents About This Guide m Document Purpose and Intended Audience 00 5 V m Document Summary nn v m Product Related Documents 00 00 c cece eaea vi 1 About the DSU B Model 7510 DSU Features coire e RE RE TRERETS 1 1 m Typical DSU Configurations iiic nee em ete ehem ede 1 2 m User Interface Types eeeseeeeeeeeee e 1 3 Rear Panel Interface Connections 200 cc eee eee eee 1 4 2 Using the Asynchronous Terminal Interface m Connecting to the Terminal Port 0 0 cece eee eee ees 2 1 m Initiatingan ATI Session a eee 2 2 m Screen Format Types 22 cece cece eens 2 3 What Affects Scree
32. es of inactivity before the ATI session terminates automatically Timeout is based on no keyboard activity Disconnect Time minutes option appears when Inactivity Timeout is enabled 1 to 60 The ATI user session is closed after the selected number of minutes March 1997 7510 A2 GB20 00 Worksheets Overview The worksheets in this appendix summarize the configuration options accessed when you select Configuration on the Main Menu The possible menu selections are displayed with the default settings and the possible settings Configuration Worksheets System Configuration Option Settings Default in Bold Operating Mode DDS LADS DDS Line Rate Kbps 56 64CC Autobaud LADS Timing Internal External Receive LADS Line Rate Kbps 56 64 Test Timeout Enable Disable Test Duration min 1 120 10 7510 A2 GB20 00 March 1997 B 1 Worksheets Network Interface Configuration Option Settings Default in Bold Network initiated DSU Loopback 64K CC Enable Disable Data Scrambling 64K CC Enable Disable V 54 Initiated DSU Loopback Enable Disable Data Port Configuration Option Settings Default in Bold Invert Transmit Clock Enable Disable Port DTE Initiated Loopbacks Disable Local Remote Both Bilateral Loopback Enable Disable Carrier Control by RTS Constant Switched
33. esults of the Diagnostic test run on the device itself Refer to Self Test Results Messages Table 4 3 Test Status Currently active tests Refer to Test Status Messages Table 4 4 main status system Device Name Node A HEALTH AND STATUS Cross Pair Detection No Signal hhh mm ss Out of Service hhh mm ss Out of Frame hhh mm ss Excessive BPVs hhh mm ss User Data Port DTR Off Device Fail yyyyyyyy DSU Operational Refresh Clear Model 7510 SYSTEM AND TEST STATUS SELF TEST RESULTS TEST STATUS Device Fail o Test Active Memory Fail CSU Loopback Active Passed Network init CSU LB Active DSU Loopback Active etwork init DSU LB Active V 54 initiated DSU LB Active Local Loopback Active Sending 511 on Port onitoring 511 on Port Sending 511 on Network onitoring 511 on Network Lamp Test Active ESC for previous menu MainMenu Exit March 1997 7510 A2 GB20 00 Monitoring the DSU Health and Status 7510 A2 GB20 00 The following messages appear in the first column of the System and Test Status screen The highest priority Health and Status message also appears on all ATI screens on the bottom right Table 4 2 Health and Status Messages 1 of 2 Message What Message Indicates What To Do Cross Pair The DDS Receive RX and Reverse the RX and TX pair at the Detection Transmit TX pairs are punchdown block or other crossed on the network termination point interface Alarm LED is on No Signal No
34. formance statistics and refresh the screen PgUp Uoru Display the previous page PgDn Dord Display the next page ResetMon Rorr Reset an active Monitor 511 test counter to zero March 1997 7510 A2 GB20 00 Using the Asynchronous Terminal Interface Switching to the Screen Function Key Area Selecting Ctrl a allows you to switch between the two screen work areas to perform all screen functions gt Procedure To access the screen function area below the dotted line 1 Press Ctrl a to switch from the screen area to the screen function key area below the dotted line The available selections for the first input field appear on the last line as shown below 2 Select either the function s designated underlined character or press the tab key until you reach the desired function key Example To reset the Monitor 511 error counter to zero type r or R ResetMon 3 Press Return The function is performed 4 To return to the screen area above the dotted line press Ctrl a again main test network Device Name Model 7510 NETWORK TESTS Test Command Status Result CSU Loopback Start Inactive 0 00 DSU Loopback Start Inactive 0 00 Send V 54 Up Send Sending Send V 54 Down Send Inactive Send 511 Start Inactive Monitor 511 Stop Active Errors 99999 Ctrl a to access these functions ESC for previous menu MainMenu Exit ResetMon 7510 A2 GB20 00 March 1997 2 7 Using the Asynchronous Termina
35. h Default Setting Disable Specifies whether the DTE can initiate and terminate local and or remote loopbacks The DTE loopback control is done through the Interchange Circuits specified by the V 54 standard NOTE Refer to Running Network Tests in Chapter 5 Disable No local or remote loopbacks can be initiated by the DTE Local A local loopback can be controlled by the DTE via the Interchange Circuit LL CT141 as specified by V 54 The DTE port remains in loopback as along as LL remains on Aborting the loopback from the ATI has no effect Remote A remote digital loopback can be controlled by the DTE via Interchange Circuit RL CT140 as specified by V 54 The remote equipment must be able to detect the in band V 54 loopback sequence Both Both the local and remote loopbacks can be controlled by the DTE Bilateral Loopback Possible Settings Enable Disable Default Setting Disable When a DSU loopback is initiated a local DTE loopback is also automatically initiated A Bilateral Loopback can be started by the ATI NMS or by detection of a V 54 Loop 2 Up sequence Enable When Bilateral Loopback is enabled running a DSU loopback also automatically starts a local loopback The local loopback ends when the DSU loopback terminates Disable Running a DSU loopback does not start a local loopback NOTE Refer to Running Network Tests in Chapter 5 March 1997 A 5 Configuration Option
36. he screen display clearing information typed in but not Ctrl I yet entered gt Procedure To make a menu or field selection 1 Press the tab key or the right arrow key to position the cursor on a menu or field selection Each selection is highlighted as you press the key to move the cursor from position to position 2 Press Return The selected menu or screen appears 3 Continue Steps 1 and 2 until you reach the screen you want March 1997 2 5 Using the Asynchronous Terminal Interface The current setting or value appears to the right of the field name The valid choices for the field are displayed in the screen function area You can enter information into a selected field by typing in the first letter or letters of a field value or command If a field is blank and the Field Values screen area displays valid selections press the spacebar and the first valid value for the field will appear Continue pressing the spacebar to scroll through other valid values Screen Function Keys 2 6 All screen function keys located below the dotted line operate the same way upper or lowercase throughout the screens For the screen function Select And press Return to MainMenu Morm Return to the Main Menu screen Exit Eore Terminate the async terminal session Save Sors Save information Refresh Rorr Update screen with current information ClrStats Corc Clear network per
37. he user interface is blank until activated Press Return to activate the user interface The first time you do this the Main Menu screen is displayed main Device Name Model 7510 MAIN MENU Status Test Configuration Control Ctrl a to access these functions Entry to all of the DSU s tasks begins at the Main Menu screen which has four menus or branches Select To Status View results of diagnostic tests network status of interfaces statistics LEDs and DSU identity information Test Select and cancel tests for the DSU s interfaces Configuration Display and edit the configuration options Control Establish identification for the DSU and system or to initiate a power up reset of the DSU 2 2 March 1997 7510 A2 GB20 00 Using the Asynchronous Terminal Interface MAIN MENU Status Test Configuration Control Load Configuration From Status System and Test Status Network Interface Status Test Configuration Control Network Tests Edit Display Device Name Data Port Tests System Reset Device Lamp Test Network Abort All Tests Data Port Terminal P ort Network Performance Statistics Display LEDs Identity 497 15238 Screen Format Types Three types of screen formats are available on the ATI Use the screen format To Menu selection Display a list of available functions for user selection Input
38. in the rightmost column of the System and Test Status screen Table 4 4 Test Status Messages Test Status Message Meaning No Test Active Status message indicating no local remote or network test in progress CSU Loopback Active A CSU Loopback toward the network is currently active Network init CSU LB Active A CSU Loopback initiated by the network is currently active DSU Loopback Active A DSU Loopback toward the network is currently active Network init DSU LB Active A DSU Loopback initiated by the network is currently active f the network service is 56 kbps the network loopback is non latching A non latching loopback ends when the network activation codes stop f the network service is 64 kbps CC the network loopback is latching This condition can only occur when the Network Interface option Network initiated DSU Loopback 64K CC is enabled Refer to Network Interface Options Table A 2 V 54 initiated DSU LB Active A DSU loopback is active that was initiated by the detection of a V 54 sequence originated by the remote unit This condition can only occur when V 54 Initiated DSU Loopback is enabled Refer to Network Interface Options Table A 2 Local Loopback Active A local loopback toward the DTE is currently active Sending 511 on Port A 511 test pattern is being sent over the DTE port Monitoring 511 on Port DSU is monitoring a 511 test patter
39. int Line Signal Detect An EIA lead standard for V 24 circuit CT 109 an output signal DCE to DTE March 1997 7510 A2 GB20 00 multiplexing node non latching loopback NS OOF OOS PAD point to point circuit protocol PSTN reset RIP RLSD router RS 232 RTS RXC RXD SDLC synchronous TDM TXC TXD V 35 WAN 7510 A2 GB20 00 Glossary A method for interleaving several access channels onto a single circuit for transmission over the network A connection or switching point on the network A non latching loopback can only be initiated or terminated by the 56 kbps network service provider No Signal A network reported condition Out Of Frame An error condition in which frame synchronization bits are in error A network reported condition Out of Service A digital network trouble signal Packet Assembler Disassembler A data network circuit with one control and one tributary device The rules that govern how devices exchange information on a network It covers timing format error control and flow control during data transmission Public Switched Telephone Network A network shared among many users who can use telephones to establish connections between two points A reinitialization of the device that occurs at power up or in response to a reset command Routing Information Protocol Specifies the routing protocol used between DSUs Receive Line Signal Detect See CD
40. l Interface Ending an ATI Session Use the Exit function key from any screen to terminate the session p Procedure To end an ATI session 1 Press Ctrl a to go to the screen function key area below the dotted line 2 Save changes if required A confirmation message appears if you have made but not saved changes to your configuration 3 Tab to Exit or type e or E and press Return The User Interface Idle screen appears 2 8 March 1997 7510 A2 GB20 00 Customizing the DSU Identifying the Device and System Use the Device Name screen to determine the name that will be displayed at the top of all ATI screens and system information that will be displayed on the Identity screen To access the Device Name screen follow this menu selection sequence Main Menu Control gt Device Name main control device name Device Name Node A Model 7510 DEVICE NAME Device Name System Name System Location System Contact Ctrl a to access these functions ESC for previous menu MainMenu Exit Save Fields on the Device Name screen are null until you enter values Allowable values are any printable ASCII character ASCII printable characters include m Numeric 0 9 m Upper or lower case A Z m Space m All ASCII symbols Use the left and right arrow keys to scroll through the fields Select Clear to reset a field to a null value 7510 A2 GB20 00 March 1997 3 1 Customizing the DSU gt Procedure To enter
41. m the external clock provided by the DTE connected to the V 35 interface on circuit CT113 pins U W Receive Timing is derived from the line receive signal unless the unit is running diagnostic tests During the tests the timing source is the internal clock This setting should be used for a LADS secondary timing unit March 1997 7510 A2 GB20 00 Configuration Option Tables Table A 1 System Options 2 of 2 LADS Line Rate Kbps Possible Settings 56 64 Default Setting 64 Line operating rate for LADS operation LADS Line Rate Kbps option appears when Operating Mode is set to LADS 56 56 kbps line rate Provides increased distance for the LADS applications 64 64 kbps line rate Test Timeout Possible Settings Enable Disable Default Setting Enable Allows user initiated tests to end automatically Recommend enabling when the unit is managed remotely through the IMC to avoid the requirement to terminate the test manually Enable User initiated loopback and pattern tests end when test duration is reached Disable Tests must be terminated manually from the Network Tests screen Refer to Running Network Tests in Chapter 5 NOTE Tests commanded by the DTE or network initiated tests are not affected by this test timeout Test Duration min Possible Settings 1 120 Default Setting 10 Number of minutes for a test to be active before automatically ending
42. minal Port Options For Terminal Port options refer to Table A 4 To access the Terminal Port Options screen follow this menu selection sequence Main Menu Configuration Load Configuration From gt Configuration Edit Display gt Terminal Port Table A 4 Terminal Port Options 1 of 2 Monitor DTR Possible Settings Enable Disable Default Setting Enable Specifies monitoring of the Data Terminal Ready DTR control lead Enable Standard operation of the DTR control lead Disable DTR is ignored Some external device connections may require this setting Inactivity Timeout Possible Settings Enable Disable Default Setting Disable Provides automatic logoff of an ATI session through the Terminal Port When the session is closed User Interface Idle appears on the screen and the unit toggles the Terminal port DSR lead Enable The ATI session terminates automatically after the Disconnect Time set in the next option When the session was occurring over an external modem connected to the Terminal port the modem will interpret the DSR toggle as DTR being dropped and disconnect Disable An ATI session through the Terminal port will remain active indefinitely 7510 A2 GB20 00 March 1997 A 7 Configuration Option Tables A 8 Table A 4 Terminal Port Options 2 of 2 Disconnect Time minutes Possible Settings range 1 60 Default Setting 5 Number of minut
43. n Displays 0 cece eee cece 2 3 Screen Work Areas Ka maa eee Deaan KALA eee 2 4 E Navigating ine Screens naal cid adele dia Bie eb bebe wee 4 2 5 Keyboard KEY Sin iue ao etes AA 2 5 Screen Function K8ys os a veers cet Re RR I Bb oe ee eee E E EE 2 6 Switching to the Screen Function Key Area ssssuu 2 7 m Ending an ATI SeSSION 0c cece eese 2 8 3 Customizing the DSU m Identifying the Device and System a 3 1 Saving Configuration Options 0 c eee eee eee 3 2 E Configuring the DSU LL a Kaka NG kd ed Wee NG kei eg Da 3 3 Configuration Option Areas eee es 3 3 Accessing and Displaying Configuration Options 3 3 7510 A2 GB20 00 March 1997 Contents 4 Monitoring the DSU a MhattoMODKOE nce ie eee eer ce sie a an 4 1 m Viewing System and Test Status 0 000 cece eee eee eee 4 2 Heaslthiand Stats cine voce wiridiana wile x cepe ka icem E ERE S 4 3 Selle test Hesulls AA AA PA TEE NA EK 4 4 Test Status Messages 000 aaa 4 5 m Viewing Network Interface Status 00 0 c cee eee eee 4 6 m Viewing Network Performance Statistics eee eens 4 7 a Monitonnig the LEDS 3 cin de tee hee te Baad been rer end wih 4 8 SVEM LEDS 2 ouk Dido eg A hee hae bett ee ee a 4 9 NOWO LEDS sapna at eeaaeysn Mov Oer ree Mise NAP YU APTE 4 10 POR LEDS Mc 4 11 5 Testing m Accessing the Test Menu 0 cece eee eee ee
44. n over the DTE port Sending 511 on Network A 511 test pattern is being sent over the network interface Monitoring 511 on Network DSU is monitoring a 511 test pattern on the network interface Lamp Test Active The Lamp Test is active causing the LEDs on the front panel to light March 1997 4 5 Monitoring the DSU Viewing Network Interface Status 4 6 The network interface status fields are read only m Line Rate Kbps If the DSU is connected to an operating line and the Line Rate Kbps shows Autobaud and does not change to a line rate within about 15 seconds Line Rate Kbps may have to be reconfigured manually Refer to Network Interface Options Table A 2 Loop Loss dB The loop loss is the loss of signal strength of the receive line signal from the local loop To view the Network Interface Status follow this menu selection sequence Main Menu Status gt Network Interface Status Table 4 5 describes the contents of the Network Interface Status screen Table 4 5 Network Interface Status Screen Contents Field Status What the Status Indicates Line Rate Kbps 56 Kbps Line rate on the network interface 64 CC Autobaud indicates the DSU is 64 LADS trying to determine the network line Autobaud rate This should be a temporary condition No Signal No signal can be detected over the network interface Loop Loss dB 0 to 65 dB Amount of loop loss loss
45. ns 5 1 m Running Network TESIS ien Shad Rinse Hated bad obec hoe d 5 3 CSU or External Network Loopback aaa 5 4 DSU or Internal Network Loopback 000eee eee eens 5 5 Send V 54 Up Down Sequences aaa aaa 5 5 511 Test Pattern for the Network aa 5 6 a Running Data Pot Teste stea hon cite cee PAGAN ANGAT KGG 5 7 Local EGOpDEDN AA AA 5 8 bil Test Patternifor the DTE 2 ui NG ea Seeds eles 5 8 m Running the Lamp Test irre RR e ERR RR 5 9 m Ending anActive Tesi soccer Romer RE RD UR RE LETS E NAR 5 10 6 Messages and Troubleshooting m Messages and Troubleshooting 02 e eee eee eee ees 6 1 m Responding to Device Messages eee eee eee ee 6 1 BM TVOUDIGSNOOUNG pesca cce sten an AEAEE IELPCRE ed RR A EDEN 6 3 m Resetting the DSU woe sender ews eae erem rre RRIDRRRE LER chee ds 6 4 m Displaying DSU Identity Information 006 6 4 ii March 1997 7510 A2 GB20 00 Contents A Configuration Option Tables B Worksheets ONENEN orane ace rene ie PX dade Ae eei aes iu A 1 System Options Ment 2 anap er rt RR RR PAA EX Ure PESE A 2 Network Interface Options Menu 0 cece eee eee ees A 4 Data Port Options MENU 2 20 55 KAPAL KANE NANDAYA eee dane deans A 5 Terminal Port ODUN S wo iced acm ohana wees ee etka atta Seed nG A 7 NEE aaa iude ded CE PAANAN d dee oe ced hee Ge baler AA deed B 1 Configuration Worksheets sssseeesesee eese
46. of signal strength of the receive line signal from the local loop measured in decibels Inoperative The line may be disconnected March 1997 7510 A2 GB20 00 Monitoring the DSU Viewing Network Performance Statistics Performance statistics for the network interface are available to Monitor the current status of the network operations m View the DSU s performance statistics which Assist you in determining the duration of specific conditions Provide a historical context for problem detection and analysis To view the Network Performance Statistics follow this menu selection sequence Main Menu Status Network Performance Statistics main status performance Device Name Model 7510 NETWORK PERFORMANCE STATISTICS No Signal Count 101920 26 Out of Service Count 0 0 Out of Frame Count 621 8 Excessive BPV Count 99830 Invalid BPV Count 87409 ESC for previous menu MainMenu Exit lrStats All counts show the number of occurrences since the last reset of the counters m No Signal Count is the number of occurrences of a No Signal condition m Out of Service Count is the number of occurrences of an Out of Service OOS condition m Outof Frame Count is the number of occurrences of an Out of Frame OOF condition m Excessive BPV Count is the number of times at least one invalid bipolar violation was detected every 20 ms for a 2 second period m Invalid BPV Count is a raw count of the number of inv
47. on LED ASCII printable characters ATI Configuration menu Control menu exiting initiating menus 2 2 monitoring C cables rear panel communication protocol options configuration example option areas 3 3 option tables option worksheets saving Configuration menu connectors rear panel C 1 Control menu crossover EIA 232 cable C 4 CTS clear to send LED 4 11 customer configuration areas 7510 A2 GB20 00 D data port options A 5 A 7 data port tests 5 7 defaults configuration option detecting problems device messages 6 1 p 2 name 3 1 reset display revision numbers 6 4 displaying configuration options default configuration identity information DM data mode LED DTE test DTR data terminal ready LED E effective access to ATI EIA 232 pin assignments C 2 C 4 ending a test ending an ATI session error messages Exit ATI function F factory defaults for configuration options features front panel status indicators G glossary GL 1 GL 4 March 1997 IN 1 Index H hardware revision number health and status messages 4 3 4 4 I identity device name 3 1 interface connections 1 4 network status K keyboard functions L LADS Local Area Data Set example maximum distances 1 3 Operating Mode setting lamp test LAN adapter and cable LEDs 4 8 4 11 front panel testing loopbacks M
48. ons required to establish maintain and end a connection It also provides the signal conversion required for communication between the DTE and the network Digital Data Service Provides digital communication circuits March 1997 GL 1 Glossary DMI DSR DSU DTE DTR EIA EIA 232 excessive BPV factory defaults FCC frame relay full duplex HDLC interface ITU LADS LAN latching loopback LED link layer protocol LL loopback LSD GL 2 Data Mode Idle Refers to a sequence of ones transmitted or received on the DDS network Data Set Reagy An EIA lead standard for V 24 circuit CT 107 an output signal DCE to DTE Data Service Unit Data communications equipment that provides an interface between the DTE and the digital network Data Terminal Equipment The equipment such as computers and printers that provides or creates data Data Terminal Ready An EIA lead standard for V 24 circuit CT 108 an input signal DTE to DCE Electronic Industries Association This organization provides standards for the data communications industry to ensure uniformity of interface between DTEs and DCEs The EIA s standards defining the 25 pin interface between the DTE and DCE An excessive bipolar violation condition results when at least one invalid bipolar violation has occurred every 20 milliseconds for 2 seconds A predetermined set of configuration options for general operation Federal Communications
49. oopback Start Inactive Send V 54 Up Send Sending Send V 54 Down Send Inactive Send 511 Start Inactive Monitor 511 Stop Active Errors 99999 Ctrl a to access these functions ESC for previous menu MainMenu Exit ResetMon Use the Command column to start or stop a test by pressing Enter The Result column displays the test duration since the last device reset When the Monitor 511 test is active ResetMon is available to reset the error counter to zero 7510 A2 GB20 00 March 1997 5 3 Testing CSU or External Network Loopback CSU loopback is an external loopback that is located as closely as possible to the network interface gt Procedure To run a CSU loopback 1 Position the cursor at the Start command next to CSU Loopback on the Network Tests screen 2 Press Enter 3 The Start command is changed to Stop If you want to manually stop the test verify that the cursor is positioned at the Stop command 4 Press Enter The duration of the test is displayed PSU csu DTE DTE Aggregate DDS Port Interface pean o CSU Loopback 496 15144 5 4 March 1997 7510 A2 GB20 00 Testing DSU or Internal Network Loopback DSU loopback is an internal loopback that is located as closely as possible to the customer interface serving the DTE B gt Procedure To run a DSU loopback 1 Position the cursor at the Start command next to DSU Loopback on the Network Tests screen 2 Press Enter 3 The Start
50. ors 6 51 inches 165 3 mm Weight 1 3 pounds 0 6 kg Power Normal service voltage range Input 120 Vac 12 Vac 60 Hz 3 Hz 4 9 watts max at 120 Vac Approvals FCC Part 15 FCC Part 68 Safety Certifications Emissions Class A digital device Refer to the equipment s label for Registration Number Refer to the equipment s label for approvals on product Class A digital apparatus Interface and Connectors 25 pin D subminiature connector 34 pin MS34 connector EIA 232 ITU V 24 ISO 2110 for Terminal Port ITU V 35 ISO 2593 for DTE Port Physical Environment Operating Temperature Storage Temperature Relative Humidity Shock and Vibration 32 to 122 F 0 to 50 C 4 to 158 F 20 to 70 C 596 95 noncondensing Withstands normal shipping and handling Heat Dissipation 11 6 Btu hr max at 120 Vac March 1997 D 1 Technical Specifications D 2 Table D 1 Model 7510 DSU Technical Specifications 2 of 2 Item Specifications Network Interface Data rates LADS data rates Services supported 56 kbps and 64 kbps clear channel CC 56 kbps and 64 kbps 4 wire service 62310 1993 Network Compatibility ANSI T1 410 1992 and AT amp T Technical Reference 56 and 64 kbps meeting desired loop loss DTE Data Port Interface 34 pin V 35 connector Table D 2 Model 7510 DSU LADS Connection Distances
51. r the DSU m Menu driven Asynchronous Terminal Interface ATI screens see Using the Asynchronous Terminal Interface Chapter 2 m Front panel LED status indicators see Monitoring the DSU Chapter 4 7510 DSU PURO Na KA SF e MME DONNA NON 56 64K u Network 497 15245 Rear Panel Interfaces The following illustration shows the physical interfaces of the DSU Information about the installation of the DSU is contained in the Model 7510 DSU Startup Instructions QOOOOOPOOOCOCOUUO0O0O0O0000O QOOOOOMOOOCCOUOOO0O00000O Uu 0 NETWORK elejejele oo O eooo cooo DODONG O A O TERMINAL OOOO je REH 497 15237 7510 A2 GB20 00 March 1997 1 3 Using the Asynchronous Terminal Interface Connecting to the Terminal Port The device used for the Asynchronous Terminal Interface ATI can be a VT100 compatible async terminal or a PC running emulation software The terminal or PC can be connected to the Terminal port directly or through an external modem Ensure that the device you connect communicates using these settings m Data rate set to 9 6 kbps m Character length set to 8 m Parity set to None m Stop Bits set to 1 Terminal port settings cannot be changed from the ATI 7510 A2 GB20 00 March 1997 2 1 Using the Asynchronous Terminal Interface Initiating an ATI Session T
52. r to Data Port Options Table A 3 to enable CSU Loopback User Network tests DDS Network by loop current reversal When initiated by the network CSU Loopback cannot be disabled by the user DSU Loopback m User Refer to Data Port Options Table A 3 Digital Local Loopback m User Control via CT141 can be disabled DTE via CT141 Refer to Data Port Options Table A 3 Network initiated 56 kbps DSU Loopback Non latching loopback DDS Network Cannot be disabled by user Network initiated 64 kbps CC DSU Loopback Latching loopback DDS Network Includes optional data scrambling and uses 25 second timer to detect the network sequence Can be disabled by user Remote Digital Loopback Remote unit sending V 54 sequence Same as a DSU Loopback but initiated by a remote unit via V 54 sequence Can be disabled locally Refer to Network Interface Options Table A 2 V 54 Sequences to remote unit User DTE via CT140 Control via CT140 can be disabled Refer to Data Port Options Table A 3 March 1997 7510 A2 GB20 00 Testing Running Network Tests Network tests require the participation of your network service provider To access the Network Tests screen follow this menu selection sequence Main Menu Test Network Tests main test network Device Name Model 7510 NETWORK TESTS Test Command Status Result CSU Loopback Start Inactive DSU L
53. s and Pin Assignments LAN Adapter Converter and Cable The following figure shows the m Pin assignments for the DB25 plug to modular jack converter between the Management port and the 8 conductor LAN Adapter cable and m Pin assignments for the custom 8 conductor cable with modular plugs on both ends between the converter and the LAN Adapter Plug to Modular RTS Rx Clock Frame Ground Unused T Jack Converter Cable Management 8 Position i Plug to Plug to Port DB25 Plug Modular Jack Modular Jack LAN Adapter Tx Clock 15 Unused Rx Data 3 DTR Signal Ground Tx Data Tx Data Signal Ground DTR Rx Data CD CTS I I l 496 15179 Modular RJ48S DDS Network Interface Cable Network access is via a 14 foot modular cable with an RJ48S keyed plug connector on each end RJ48S DDS Network Interface Cable Functions Circuit Pin Transmitted data to the local loop R 1 Transmitted data to the local loop T Received data from the local loop T1 Oo N Received data from the local loop R1 7510 A2 GB20 00 March 1997 C 5 Technical Specifications 7510 A2 GB20 00 Table D 1 Model 7510 DSU Technical Specifications 1 of 2 Item Specifications Housing Height including feet 2 13 inches 54 1 mm Height without feet 1 99 inches 50 6 mm Width 9 10 inches 231 2 mm Depth case 6 20 inches 157 5 mm Depth case and connect
54. sible Cause Solutions Alarm LED is on One of several alarm conditions exists Health and Status displays the alarm condition Refer to Health and Status Messages Table 4 2 for recommended action Cannot access the DSU via the ATI The terminal is not set up for the correct rate or data format or the DSU is configured so it prevents access 1 Check the cable and connections 2 Set up your terminal or PC emulation as shown in Connecting to the Terminal Port in Chapter 2 3 Power the DSU on and off and try again Device Fail appears on the System and Test Status screen under Self Test results The DSU detects an internal hardware failure Power the DSU off and on and try again Contact your service representative An LED is not lit LED is burned out Run the Lamp test If the LED in question does not flash with the other LEDs then contact your service representative No power or the LEDs are not lit The power cord is not securely plugged into the wall receptacle and into the rear panel connection Check that the power cord is securely attached at both ends The wall receptacle has no power Check the wall receptacle power by plugging in some equipment that is known to be working Check the circuit breaker Verify that your site is not on an energy management program Power supply has failed Replace power supply
55. signal is being received 1 Verify that the network cable is hhh mm ss Local DSU network problem securely attached at both ends The Alarm and NS LEDs are on and Network Performance Statistics are active 2 Contact network provider Out of Service hhh mm ss DSU is receiving out of service code from the network for the remote unit The Alarm and OOS LEDs are on and Network Performance Statistics are active 1 Verify that the remote site is in service 2 Contact network provider Out of Frame hhh mm ss DSU is detecting an out of frame condition associated with Receiving out of frame code from the network DSU detecting out of frame errors with 64 kbps CC data rate m DSU unable to synchronize local receiver circuit with line signal 1 Verify that the line rate matches the configured rate 2 Contact network provider Excessive BPVs hhh mm ss Data rates do not match or network trouble is causing bipolar violations Alarm LED is on and Network Performance Statistics are active 1 Verify that the network cable is securely attached at both ends 2 Contact network provider if problem persists User Data Port DTR Off The DTE is not ready to transmit or receive data This message will not appear unless Monitor DTR is enabled Check on the DTE status Verify that the DTE is powered up and asserting DTR hhh mm ss indicates the amount of time the con
56. ttings determine how the DSU operates Use the DSU s Configuration branch to display or change configuration option settings Configuration Option Areas The DSU is shipped with factory settings in the Default Factory configuration area You can find default information by m Referring to Configuration Option Tables Appendix A or Worksheets Appendix B m Accessing the Configuration branch of the DSU menu The DSU has two sets of configuration option settings The Current Configuration matches the Default Factory Configuration until modified and saved by the user Configuration Option Area Configuration Option Set Current Configuration The DSU s active set of configuration options Default Factory Configuration A read only configuration area containing the factory default configuration options If the factory default settings do not support your network s configuration customize the configuration options for your application Accessing and Displaying Configuration Options To display the configuration options you must first copy one configuration option set into the edit area p Procedure To load a configuration option set into the configuration edit area 1 Follow this menu selection sequence Main Menu gt Configuration Load Configuration From 2 Select Current Configuration or Default Factory Configuration Press Return The selected configuration option set is loaded and the Config
57. uit CT109 Received Line Signal Detector RLSD or CD which is an output from the DSU Standard RLSD is asserted when Data Mode is on the receive line RLSD deasserts when a DDS facility alarm is detected or the DSU is receiving CMI codes Forced On RLSD is forced on after the unit is powered up with a successful self test DSR Control Possible Settings Standard Forced On On During Test Default Setting Standard Specifies the operation of the Interchange Circuit CT107 Data Set Ready DSR which is an output from the DSU Standard DSR is always asserted except when a DDS facility alarm is reported or the DSU is in Test mode Forced On DSR is forced on after the unit is powered up with a successful self test On During Test DSU operates the same as the Standard option except that DSR remains asserted when the DSU is in Test mode to allow the DTE to send test patterns March 1997 7510 A2 GB20 00 Configuration Option Tables Table A 3 Data Port Options 3 of 3 Monitor DTR Possible Settings Enable Disable Default Setting Enable Indicates to the DSU whether to monitor the Interchange Circuit CT108 Data Terminal Ready DTR from the DTE Enable The DSU monitors the state of DTR on the DTE port and displays it on the System and Test Status screen Disable DTR is not monitored by the DSU Use when a DTE does not provide the DTR lead at the interface Ter
58. uration Edit Display menu screen appears See Appendix A for a list and explanation of the configuration options available 7510 A2 GB20 00 March 1997 3 3 Monitoring the DSU What to Monitor This chapter presents information on how to access and monitor DSU status and performance statistics on the DDS network You can monitor DSU operations by viewing m System and Test Status screen m Highest priority Health and Status message on the last line of all screens m Network Interface Status screen m Network Performance Statistics screen m LEDs on the ATI Status screen or the DSU s front panel Table 4 1 shows the available indicators of alarm conditions on the network interface and the User Data port Table 4 1 Alarm Indicator Locations Status Specific Alarm Condition Screen LED Crossed Pairs Y N No Signal NS Out of Service OOS Out of Frame OOF Excessive Bipolar Violations BPV lt lt lt lt lt z z lt lt lt Inband Framing Error 7510 A2 GB20 00 March 1997 4 1 Monitoring the DSU Viewing System and Test Status To view System and Test Status information follow this menu selection sequence Main Menu gt Status System and Test Status The System and Test Status screen has three sections Health and Status Displays messages in priority order highest to lowest Refer to Health and Status Messages Table 4 2 Self Test Results R
59. ystem Contact System Location System Name system name 6 4 7510 A2 GB20 00 T technical specifications terminal port direct connection options test DTE LED network status messages Test menu testing troubleshooting TXD transmitted data LED U user interface access 2 1 async terminal V V 35 connector V 54 sequences W worksheets option configuration March 1997 Index IN 3
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