Instruction/ maintenance manual of the product 317x E1 Paradyne
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ACCULINK 317x E1 DA T A SER VICE UNIT/ CHANNEL SER VICE UNIT OPERA T OR’S GUIDE Document No. 3170-A2-GB20-20 December 1996.
ACCULINK 317x E1 DSU/CSU A December 1996 3170-A2-GB20-20 ACCULINK 317x E1 Data Service Unit/Channel Service Unit Operator ’s Guide 3170-A2-GB20-20 3rd Edition (December 1996) Changes and enhancements to the product and to the information herein will be documented and issued as a new release.
Important Instructions B 3170-A2-GB20-20 December 1996 Important Safety Instructions 1. Read and follow all warning notices and instructions marked on the product or included in the manual. 2. When an ac power source is used, this product is intended to be used with a three-wire grounding type plug – a plug which has a grounding pin.
ACCULINK 317x E1 DSU/CSU C December 1996 3170-A2-GB20-20 In addition, if the equipment is to be used with telecommunications circuits, take the following precautions: – Never install telephone wiring during a lightning storm. – Never install telephone jacks in wet locations unless the jack is specifically designed for wet locations.
Important Instructions D 3170-A2-GB20-20 December 1996 CE Marking Models 3172-A1-410 and 3174-A1-410 Only Models 3172-A1-410 and 3174-A1-410 of this product are marked with the CE mark.
i 3170-A2-GB20-20 December 1996 T able of Contents Preface Objectives and Reader Assumptions iii . . . . . . . . . . . . . . . . . . . . . . . . . Related Documents iii . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Reference Documents iii .
ACCULINK 317x E1 DSU/CSU ii December 1996 3170-A2-GB20-20 4. Maintenance Overview 4-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Self-T est Health 4-2 . . . . . . . . . . . . . . . . . . . . . . . . . .
iii 3170-A2-GB20-20 December 1996 Preface Objectives and Reader Assumptions This operator ’ s guide contains installation, operation, and maintenance information for the ACCULINK 317x E1 Data Service Unit (DSU)/Channel Service Unit (CSU).
1-1 3170-A2-GB20-20 December 1996 Introduction Overview 1-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Features 1-1 . . . . . . . . . . . . . . . .
ACCULINK 317x E1 DSU/CSU 1-2 December 1996 3170-A2-GB20-20 DTE Drop/Insert Interface The DTE Drop/Insert interface is compatible with the signal format of CCITT Recommendation G.703 and the frame structure of CCITT Recommendation G.704. This interface allows DTEs/PBXs to share the E1 network with other high-speed equipment.
1-3 3170-A2-GB20-20 December 1996 Physical Description The E1 DSU/CSU series of products consists of a Model 3172 DSU/CSU (2-port) and a Model 3174 DSU/CSU (4-port).
ACCULINK 317x E1 DSU/CSU 1-4 December 1996 3170-A2-GB20-20 495-14295-0 2 POWER AUX PORT COM PORT DTE PORT 1 PORT 2 CLOCK IN 120 Ω 75 Ω 75 Ω 120 Ω RX SHIELD OPEN EARTH RX 75 Ω TX NETWORK CAUTION: AUX PORT OR COM POR T MUST NOT BE CONNECTED TO PSTN OR E1 NETWORK Figure 1-2.
Introduction 1-5 3170-A2-GB20-20 December 1996 T able 1-1 Rear Panel Connectors and Switches Name Function POWER Supplies power to the E1 DSU/CSU by providing an attachment for the ac power module or the optional dc power cable (+24 or – 48 Vdc). AUX PORT Supports SNMP LAN Adapter or daisy-chain connections.
2-1 3170-A2-GB20-20 December 1996 Installation Overview 2-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Application Examples 2-1 . . . . . . . . . .
ACCULINK 317x E1 DSU/CSU 2-2 December 1996 3170-A2-GB20-20 NETWORK SERVICES PBX LAN ROUTER 496-14312-0 3 DSU/CSU Figure 2-2. Shared Access Application Example FRACTIONAL NETWORK LAN ROUTER LAN ROUTER LAN ROUTER 496-14313-0 3 DSU/CSU DSU/CSU DSU/CSU LAN ROUTER Figure 2-3.
Installation 2-3 3170-A2-GB20-20 December 1996 SNMP Connection Examples The E1 DSU/CSU can be connected to an SNMP management system in a number of ways. Some examples include: • Directly connecting the COM port to the SNMP manager (Figure 2-5). • Connecting the COM port to a network device (e.
ACCULINK 317x E1 DSU/CSU 2-4 December 1996 3170-A2-GB20-20 NETWORK LAN ROUTER ETHERNET SNMP PPP 496-14548a LAN ADAPTER DSU/CSU SNMP NMS Figure 2-7. Connection through a LAN Adapter to SNMP LAN ROUTER ETHERNET SNMP PPP 496-14549a LAN ADAPTER SNMP PPP SNMP PPP NETWORK DSU/CSU DSU/CSU DSU/CSU SNMP NMS Figure 2-8.
Installation 2-5 3170-A2-GB20-20 December 1996 Important Instructions Read and follow all warning notices and instructions marked on the E1 DSU/CSU or included in this guide. CAUTION Disconnect the power cable before connecting or removing any data cables at the rear of the unit.
ACCULINK 317x E1 DSU/CSU 2-6 December 1996 3170-A2-GB20-20 Installing the Single – ā 48 Vdc Power Supply To install the E1 DSU/CSU using a single source – 48 Vdc power supply , refer to Figure 2-1 1 and use the following procedure. T o install the – 48 Vdc single source power supply , 1.
Installation 2-7 3170-A2-GB20-20 December 1996 Installing the Redundant – ā 48 Vdc Power Supply T o install the E1 DSU/CSU using a redundant – 48 Vdc power supply , refer to Figure 2-12 and use the following procedure. T o install the redundant – 48 Vdc power supply , 1.
ACCULINK 317x E1 DSU/CSU 2-8 December 1996 3170-A2-GB20-20 Cabling Examples The E1 DSU/CSU is supplied with an ac power module. Y ou must provide the DTE and network cables. Optional cables that you can order from the company are described in Appendix D, Pin Assignments .
Installation 2-9 3170-A2-GB20-20 December 1996 Power-Up Self-T est After you connect the E1 DSU/CSU to a power source, the unit performs the power -up self-test to ensure that it is in good working order .
3-1 3170-A2-GB20-20 December 1996 Operation Overview 3-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Using the Front Panel 3-2 . . . . . . . . . . .
ACCULINK 317x E1 DSU/CSU 3-2 December 1996 3170-A2-GB20-20 Overview This chapter contains information for operating your E1 DSU/CSU. It includes a description of the front panel and sample procedures for configuring the E1 DSU/CSU. Using the Front Panel The E1 DSU/CSU front panel (Figure 3-1) consists of an LCD, a keypad, test jacks, and 12 LEDs.
Operation 3-3 3170-A2-GB20-20 December 1996 LCD The LCD (Figure 3-2) displays two types of data: • Messages such as alarms, command/test completion, and action in progress • Front panel menu tree information (see Appendix A, Fr ont Panel Menu ) F1 F2 F3 Figure 3-2.
ACCULINK 317x E1 DSU/CSU 3-4 December 1996 3170-A2-GB20-20 The scroll keys ( and ) serve one of two functions, depending on whether a menu screen or a data entry screen appears on the front panel. For data entry screens, the key scrolls one character to the left while the key scrolls one character to the right.
Operation 3-5 3170-A2-GB20-20 December 1996 T able 3-1 System LEDs Name Color Meaning OK Green Indicates the current operational state of the E1 DSU/CSU. ON : The E1 DSU/CSU is operational and has power . OFF : The E1 DSU/CSU is performing a power-up self-test or a system failure has occurred.
ACCULINK 317x E1 DSU/CSU 3-6 December 1996 3170-A2-GB20-20 T able 3-3 DTE Drop/Insert Port LEDs Name Color Meaning SIG Green Monitors the signal being received from the DTE Drop/Insert port. ON : A recoverable signal is being received from the DTE Drop/Insert port.
Operation 3-7 3170-A2-GB20-20 December 1996 T able 3-4 Data Port LEDs Name Color Meaning DTR Green Monitors the state of interchange circuit CD (CCITT 108/1, /2) – Data T erminal Ready received from the synchronous data DTE. ON : DTR is being asserted by the synchronous data DTE.
ACCULINK 317x E1 DSU/CSU 3-8 December 1996 3170-A2-GB20-20 Displaying Unit Identity The identity of the E1 DSU/CSU (serial number , model number , software revision level, hardware revision level, and customer identification) is available through the Status branch of the front panel menu (see Appendix A, Fr ont Panel Menu ).
Operation 3-9 3170-A2-GB20-20 December 1996 T o change the customer identification (CID), 1. Press the key on the top-level menu to bring the Ctrl branch onto the front panel LCD. F1 D S U E 1 CEPT Stat T est Cnfig F2 F3 2. Press F3 to select Ctrl from the top-level menu screen.
ACCULINK 317x E1 DSU/CSU 3-10 December 1996 3170-A2-GB20-20 Displaying LED Conditions The same conditions monitored by the front panel LEDs can also be monitored by the LED command. This command is most useful when the E1 DSU/CSU is being accessed remotely (see Appendix G, Fr ont Panel Emulation ).
Operation 3-1 1 3170-A2-GB20-20 December 1996 Selecting the DTE Drop/Insert or Data Port for LED Display Use the LED command on the Control branch to select which port’ s (DTE Drop/Insert or data port) status appears on the five shared LEDs on the front panel.
ACCULINK 317x E1 DSU/CSU 3-12 December 1996 3170-A2-GB20-20 The configuration options are divided into functional groups. Appendix C contains a list of the configuration options and defaults.
Operation 3-13 3170-A2-GB20-20 December 1996 Saving Edit Changes Save edit changes to the Active area when you want those changes to take ef fect immediately . Save edit changes to the Customer area when you want to overwrite the existing Customer configuration options and store these changes for future use.
ACCULINK 317x E1 DSU/CSU 3-14 December 1996 3170-A2-GB20-20 7. Select the port fr om which you want to copy the configuration options using the corresponding Function key . F1 Copy From: Prt1 Prt2 Prt3 F2 F3 8. Select the port to which you want to copy the configuration options using the corresponding Function key .
Operation 3-15 3170-A2-GB20-20 December 1996 7. Press F2 to configure the COM port as the management link to an external SNMP manager . F1 Com Use: Next SNMP ASCII F2 F3 Setting the IP Address The IP address is the address used by the SNMP manager to access the device.
ACCULINK 317x E1 DSU/CSU 3-16 December 1996 3170-A2-GB20-20 10. When you are through changing the IP address, you must press F3 (Save) to save the value.
Operation 3-17 3170-A2-GB20-20 December 1996 Specifying the Community Name(s) and Access T ype(s) Y ou have the capability of specifying up to two community names (community name 1 and community name 2) to be used by external SNMP managers when trying to access objects in the E1 DSU/CSU’ s MIB.
ACCULINK 317x E1 DSU/CSU 3-18 December 1996 3170-A2-GB20-20 1 1. Press F1 (Next) until the Access 1 configuration option appears. F1 CommunityName1: Next Edit Clear F2 F3 12.
Operation 3-19 3170-A2-GB20-20 December 1996 Selecting the Number of T rap Managers If you intend to issue traps to an SNMP manager(s) from this device, you must specify the number of SNMP managers that are to receive the traps. T o specify the number of SNMP managers to receive traps from this device, 1.
ACCULINK 317x E1 DSU/CSU 3-20 December 1996 3170-A2-GB20-20 Configuring DS0 Channels The E1 DSU/CSU provides channel configuration options that allow you to do the following: • Display the DS0 assignments for the Network, DTE Drop/Insert, and data port interfaces.
Operation 3-21 3170-A2-GB20-20 December 1996 N1 N2 N3 N4 N5 N6 N7 N8 N9 N10 N1 1 N12 N13 N14 N15 N16 N17 N18 N19 N20 N21 N22 N23 N24 N25 N26 N27 N28 N29 N30 N31 D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D1 1 D12.
ACCULINK 317x E1 DSU/CSU 3-22 December 1996 3170-A2-GB20-20 Network E1 Interface Network Channel Allocation N1 D1 N2 D2 N3 D3 N4 D4 N5 D5 N6 N7 N8 N9 N10 D10 N1 1 D1 1 N12 D12 N13 D13 N14 N15 N16 D16 .
Operation 3-23 3170-A2-GB20-20 December 1996 N1 N2 N3 N4 N5 N6 N7 N8 N9 N10 N1 1 N12 N13 N14 N15 N16 N17 N18 N19 N20 N21 N22 N23 N24 N25 N26 N27 N28 N29 N30 N31 D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D1 1 D12.
ACCULINK 317x E1 DSU/CSU 3-24 December 1996 3170-A2-GB20-20 Network E1 Interface Network Channel Allocation N1 D1 N2 D2 N3 D3 N4 D4 N5 N6 D5 N7 N8 N9 N10 D10 N1 1 D1 1 N12 D12 N13 D13 N14 D16 N15 N16 .
Operation 3-25 3170-A2-GB20-20 December 1996 Port Chan Conf Options V alue Assign T o NET , DTE, Prt2, Prt3, Prt4 Assign By Block, Chan Port 1 If Assign By Block Port Rate Nx64: 64, 128, 192, 256, 320.
ACCULINK 317x E1 DSU/CSU 3-26 December 1996 3170-A2-GB20-20 Port Chan Conf Options V alue Assign T o NET , DTE, Prt1, Prt2, Prt4 Assign By Block, Chan Port 3 If Assign By Block Port Rate Nx64: 64, 128.
Operation 3-27 3170-A2-GB20-20 December 1996 Displaying DS0 Channel Assignments Use the Display command (in the Channel Configuration branch) to view how the DS0 channels are currently allocated. Line 1 of the display shows the 31 channels of the selected interface.
ACCULINK 317x E1 DSU/CSU 3-28 December 1996 3170-A2-GB20-20 8. If you selected NET the channels allocated to the Network E1 interface are displayed. Line 1 displays the 31 channels for the Network E1 interface, while Line 2 displays what is allocated to the DS0 channel shown in Line 1.
Operation 3-29 3170-A2-GB20-20 December 1996 7. Select the desired port by pressing its corresponding Function key . F1 Channel Config: Prt1 Prt2 Prt3 F2 F3 8. The configuration option for the data port channel allocation destination appears on the screen.
ACCULINK 317x E1 DSU/CSU 3-30 December 1996 3170-A2-GB20-20 Individual Channel Assignment Method The Assign By configuration option screen appears after you select a port. T o assign by the individual channel method, 1. Press F3 (Chan). F1 Assign B y: Next Block Chan F2 F3 2.
Operation 3-31 3170-A2-GB20-20 December 1996 7. From the DTE Channels screen, press F1 to select TS16. F1 DTE Channels: TS16 Assign F2 F3 8. Rsvd (Reserved) is the default for TS16. This indicates that time-slot 16 is reserved for signaling information.
ACCULINK 317x E1 DSU/CSU 3-32 December 1996 3170-A2-GB20-20 Clearing DS0 Channel Allocation Y ou can clear (deallocate) all the DS0 channels currently allocated to either the Network E1 interface, the DTE Drop/Insert interface, or the synchronous data ports.
Operation 3-33 3170-A2-GB20-20 December 1996 Selecting the T iming Source The E1 DSU/CSU provides the ability to select a primary clock (timing) source that is used to synchronize all of the E1 and data port interfaces on the E1 DSU/CSU. The clock for each interface is at the appropriate rate for that interface (e.
ACCULINK 317x E1 DSU/CSU 3-34 December 1996 3170-A2-GB20-20 Configuring for Network Timing T o configure for network timing, 1. Press F3 to select Cnfig from the top-level menu screen. 2. Select the configuration option set to be copied into the Edit area by using the appropriate Function key .
Operation 3-35 3170-A2-GB20-20 December 1996 F1 Clock Rate:2048 Next 2048 8 F2 F3 Acquiring/Releasing the User Interface Y ou can access the user interface from either the front panel or the COM port. The E1 DSU/CSU allows only one user interface to be active at a time.
ACCULINK 317x E1 DSU/CSU 3-36 December 1996 3170-A2-GB20-20 3. From the Control screen, select Rel (Release). F1 Control: Rel LED ClrReg F2 F3 The active user interface is released. A screen with this message appears. No user interface is active until input is received from a user interface.
Operation 3-37 3170-A2-GB20-20 December 1996 E1 DSU/CSU User Interface Access Security NOTE This page of the manual is self- supporting and can be removed to prevent unwanted knowledge of the security access levels and their selection.
4-1 3170-A2-GB20-20 December 1996 Maintenance Overview 4-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Self-T est Health 4-2 . . . . . . . . . . . .
ACCULINK 317x E1 DSU/CSU 4-2 December 1996 3170-A2-GB20-20 Overview The E1 DSU/CSU can detect and report faults, and perform diagnostic tests. These features ensure that your E1 DSU/CSU is giving you optimum performance in your network. Self-T est Health Use the Self-T est Health command to display the results of the power -up self-test.
Maintenance 4-3 3170-A2-GB20-20 December 1996 Device Health and Status Use the Device Health and Status branch to view current health and status of the E1 DSU/CSU. When you access this branch, one or more status messages appear in priority order (highest to lowest) on Line 2 of the LCD.
ACCULINK 317x E1 DSU/CSU 4-4 December 1996 3170-A2-GB20-20 T able 4-2 Health and Status Messages Message Description LOS at Net A Loss Of Signal condition (declared after 175 consecutive zeros) has been detected on the network interface. The condition is cleared when the density of ones to zeros received is 12.
Maintenance 4-5 3170-A2-GB20-20 December 1996 Network Performance Reports Network performance is continuously monitored and maintained in network aggregate registers (NET) and, if configured for EDL, in far -end and near-end port registers.
ACCULINK 317x E1 DSU/CSU 4-6 December 1996 3170-A2-GB20-20 7. When you press F3 from the NET Registers screen, the interval screen appears. Use this screen to choose the specific 15-minute interval.
Maintenance 4-7 3170-A2-GB20-20 December 1996 T able 4-3 (1 of 2) Performance Registers Register Interval Description T otals Description Event Error events counter . An error event is a frame with either a Cyclic Redundancy Check (CRC) error or an Out Of Frame (OOF) event.
ACCULINK 317x E1 DSU/CSU 4-8 December 1996 3170-A2-GB20-20 T able 4-3 (2 of 2) Performance Registers Register T otals Description Interval Description LOFC The loss of frame count for the current interval. This is a count of the number of times that an LOF is declared.
Maintenance 4-9 3170-A2-GB20-20 December 1996 Alarms The E1 DSU/CSU can be attached, either locally or remotely , to an ASCII terminal or printer to display or print alarm messages. The Communications (COM) port can be used as the destination for Alarm Set and Alarm Clear messages.
ACCULINK 317x E1 DSU/CSU 4-10 December 1996 3170-A2-GB20-20 SNMP T raps A trap is an unsolicited message that is sent from the E1 DSU/CSU to an SNMP manager when the device detects certain, pre-specified conditions. These traps enable the SNMP manager to monitor the state of the network.
Maintenance 4-1 1 3170-A2-GB20-20 December 1996 T roubleshooting The E1 DSU/CSU is designed to provide you with many years of trouble-free service. However , T able 4-6 gives you some direction if a problem occurs. For problems other than those listed in the table, please contact your service representative.
ACCULINK 317x E1 DSU/CSU 4-12 December 1996 3170-A2-GB20-20 T able 4-6 (2 of 2) T roubleshooting Symptom Solutions Possible Cause Message AIS at DTE appears DTE is sending an AIS. Check the DTE. Message EER at Net appears E1 facility problem. Contact your E1 facility provider .
Maintenance 4-13 3170-A2-GB20-20 December 1996 T est Jacks Six test jacks are located on the front panel (Figure 4-1). These test jacks allow for two break-in tests (Network In and Network Out) and four monitor access points (Equipment Monitor In, Equipment Monitor Out, Network Monitor In, and Network Monitor Out) to the E1 DSU/CSU.
ACCULINK 317x E1 DSU/CSU 4-14 December 1996 3170-A2-GB20-20 T est Commands The test commands enable you to run loopbacks and test patterns on the E1 DSU/CSU, and to test the front panel LEDs. These tests can help you isolate areas of trouble if you are having problems with your E1 DSU/CSU.
Maintenance 4-15 3170-A2-GB20-20 December 1996 Local Loopback T ests The Local Loopback tests enable you to conduct circuit testing and fault isolation for the digital line.
ACCULINK 317x E1 DSU/CSU 4-16 December 1996 3170-A2-GB20-20 Starting a Line Loopback The Line Loopback command (LLB) loops the received signal on the network interface back to the network without change. T o perform a Line loopback, 1. Press F2 to select T est from the top-level display screen.
Maintenance 4-17 3170-A2-GB20-20 December 1996 Starting a DTE Loopback The DTE Loopback command (DLB) loops the received signal on the DTE Drop/Insert port back to the DTE without change. A DTE loopback can be activated and deactivated based on the state of an external contact on the DTE Drop/Insert port.
ACCULINK 317x E1 DSU/CSU 4-18 December 1996 3170-A2-GB20-20 3. From the Loopback screen, press twice to display the RLB selection on the screen. F1 Loopback: Abort LLB PLB F2 F3 4. Press F3 to select RLB. F1 Loopback: PLB DLB RLB F2 F3 T est Started appears on Line 2.
Maintenance 4-19 3170-A2-GB20-20 December 1996 Starting a Data T erminal Loopback The Data T erminal Loopback command (DTLB) loops the data received from the selected port, for all DS0 channels allocated to the port, back out of the port. This loopback occurs after the data passes through the port circuitry but before it reaches the E1 framer .
ACCULINK 317x E1 DSU/CSU 4-20 December 1996 3170-A2-GB20-20 4. From the Loopback Abort screen, press the desired Function key to abort All or one specific loopback test. Use the scroll keys, if necessary . F1 Loopback: A bort All LLB PLB F2 F3 If you select ALL, LLB, PLB, DLB, or RLB, skip Step 5.
Maintenance 4-21 3170-A2-GB20-20 December 1996 4. From the Patterns Send screen, press F1 to send a 51 1 pattern, F2 to send a 1-in-8 pattern, or F3 to send a QRSS pattern. F1 Patterns: S end 51 1 1in8 QRSS F2 F3 If you send a 1-in-8 pattern, skip Step 5.
ACCULINK 317x E1 DSU/CSU 4-22 December 1996 3170-A2-GB20-20 Monitoring T est Patterns on Individual Data Ports Use the Monitor command to monitor QRSS or 51 1 test patterns on the channels allocated to an individual data port. This command provides the number of errors detected in the test pattern (5 digits, maximum 99999).
Maintenance 4-23 3170-A2-GB20-20 December 1996 4. From the Patterns Abort screen, press the desired Function key to abort either All active test patterns, active Send test patterns, or the active Monitor (Mon) test pattern.
ACCULINK 317x E1 DSU/CSU 4-24 December 1996 3170-A2-GB20-20 5. The following screens alternately appear on the LCD until you press a Function key to return to the Lamp T est screen. In addition, all LEDs blink. F1 F2 F3 F1 0123456789 : ; < = > ? @ABCDEFGHIJKLMNO F2 F3 6.
Maintenance 4-25 3170-A2-GB20-20 December 1996 T able 4-10 T est Status Messages Message Description No T est Active No tests are currently active. LLB T est Active The network interface is in Line loopback. PLB T est Active The network interface is in Payload loopback.
A-1 3170-A2-GB20-20 December 1996 Front Panel Menu DSU E1 CEPT Stat T est 495-14606-03 DevHs ST est Perf T Stat LED ID E1 Prt n Rlpbk Lpbk Ptrns Lamp Cnfig Edit Save Load Edit Area From: Choose Functi.
B-1 3170-A2-GB20-20 December 1996 T echnical Specifications Overview B-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Overview The technical specifications for the Models 3172 and 3174 DSU/CSUs are listed in T able B-1.
ACCULINK 317x E1 DSU/CSU B-2 December 1996 3170-A2-GB20-20 T able B-1 (2 of 2) Models 3172/3174 DSU/CSUs T echnical Specifications Specifications Criteria PORT INTERF ACE Standards Rates EIA 530A, V .
C-1 3170-A2-GB20-20 December 1996 Configuration Options Overview C-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DTE Interface Configuration Options C-2 .
ACCULINK 317x E1 DSU/CSU C-2 December 1996 3170-A2-GB20-20 DTE Interface Configuration Options T able C-1 DTE Interface Configuration Options DTE Port: Enab Next Enab Disab Prev DTE Drop/Insert Port. Enables the use of the DTE Drop/Insert port. Enab – Allows the use of the DTE Drop/Insert interface.
Configuration Options C-3 3170-A2-GB20-20 December 1996 Port Configuration Options T able C-2 (1 of 4) Port Configuration Options Port T ype: E530 Next E530 V .35 RS449 Prev Data Port T ype. Allows selection of the data port interface type. E530 – Configures the port as an EIA 530A compatible interface.
ACCULINK 317x E1 DSU/CSU C-4 December 1996 3170-A2-GB20-20 T able C-2 (2 of 4) Port Configuration Options All Ones: Both Next Disab DTR RTS Both Prev Send All Ones on Data Port Not Ready . Specifies the conditions on the data port that determine when valid data is not being sent from the DTE.
Configuration Options C-5 3170-A2-GB20-20 December 1996 T able C-2 (3 of 4) Port Configuration Options EDL: Disab Next Enab Disab Prev Embedded Data Link.
ACCULINK 317x E1 DSU/CSU C-6 December 1996 3170-A2-GB20-20 T able C-2 (4 of 4) Port Configuration Options Far-end: Disab Next Disab Maint Prev Far-End Performance Statistics. Specifies whether to monitor for far-end performance report messages (PRMs) and maintain far-end performance registers for a particular port.
Configuration Options C-7 3170-A2-GB20-20 December 1996 Network Interface Configuration Options T able C-3 Network Interface Configuration Options NET Frame: noCRC Next CRC4 noCRC Prev Network Line Framing Format. Designates the framing format for the Network E1 interface.
ACCULINK 317x E1 DSU/CSU C-8 December 1996 3170-A2-GB20-20 Channel Configuration Options The Channel configuration options are divided into two tables as follows: • DTE Channel Configuration Options.
Configuration Options C-9 3170-A2-GB20-20 December 1996 T able C-5 (1 of 3) Data Port Channel Configuration Options Channel Config: Dsply Clear DTE Prt1 Prt2 Prt3 Prt4 _______________________ NOTE: The configuration options described in this table are made available by selecting Prt1, Prt2, Prt3, or Prt4 from this Channel Config screen.
ACCULINK 317x E1 DSU/CSU C-10 December 1996 3170-A2-GB20-20 T able C-5 (2 of 3) Data Port Channel Configuration Options Port Rate: 384 Next 64 128 192 256 320 384 448 512 576 640 704 768 832 896 960 1.
Configuration Options C-1 1 3170-A2-GB20-20 December 1996 T able C-5 (3 of 3) Data Port Channel Configuration Options N1 N2 N3 N4 N5 N6 N7 N8 N9 N10 N1 1 N12 ... N31 Next – – – – – – – – – – – – ... Prev OR D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D1 1 D12 .
ACCULINK 317x E1 DSU/CSU C-12 December 1996 3170-A2-GB20-20 General Configuration Options T able C-6 General Configuration Options Pri Clk Src: NET Next NET DTE Prt1 Prt2 Prt3 Prt4 Int Ext Prev Primary Clock Source. Specifies the primary clock source for the E1 DSU/CSU.
Configuration Options C-13 3170-A2-GB20-20 December 1996 User Interface Configuration Options T able C-7 (1 of 3) User Interface Configuration Options Self-T est: Enab Next Enab Disab Prev Initial Self-T est. Specifies whether the E1 DSU/CSU performs a device self-test at power-up and after a device reset.
ACCULINK 317x E1 DSU/CSU C-14 December 1996 3170-A2-GB20-20 T able C-7 (2 of 3) User Interface Configuration Options Com Rate: 9.6 Next 1.2 2.4 4.8 9.6 14.4 19.2 38.4 Prev Communication Port Rate. Configures the bit rate for the communication port. 1.
Configuration Options C-15 3170-A2-GB20-20 December 1996 T able C-7 (3 of 3) User Interface Configuration Options Ignore DTR: No Next Y es No Prev Communication Port Ignore DTR State. Specifies whether the E1 DSU/CSU ignores the state of the Data T erminal Ready (DTR) input to the communication port.
ACCULINK 317x E1 DSU/CSU C-16 December 1996 3170-A2-GB20-20 Alarm Configuration Options T able C-8 Alarm Configuration Options Alrm Msg: Disab Next Enab Disab Prev Alarm Messages. Controls the generation of alarm messages, which are routed to an ASCII terminal or printer attached to the communication port.
Configuration Options C-17 3170-A2-GB20-20 December 1996 SNMP Configuration Options The SNMP configuration options are divided into two tables as follows: • General SNMP Configuration Options (T abl.
ACCULINK 317x E1 DSU/CSU C-18 December 1996 3170-A2-GB20-20 T able C-9 (2 of 4) General SNMP Configuration Options CommunityName2: Next Edit Clear Prev Community Name 2. Specifies the second of two community names that are allowed to access this unit’ s Management Information Base (MIB).
Configuration Options C-19 3170-A2-GB20-20 December 1996 T able C-9 (3 of 4) General SNMP Configuration Options Com IP Adr: Next Edit Clear Prev Com Port IP Address. Specifies the IP address for the communication port when it is configured as the SNMP management link.
ACCULINK 317x E1 DSU/CSU C-20 December 1996 3170-A2-GB20-20 T able C-9 (4 of 4) General SNMP Configuration Options Aux IP Adr: Next Edit Clear Prev IP Address for the Auxiliary Port. Specifies the IP address needed to access the unit when the auxiliary port is configured as the SNMP management link.
Configuration Options C-21 3170-A2-GB20-20 December 1996 T able C-10 (1 of 2) SNMP T rap Configuration Options Num T rap Mgrs: 1 Next 1 2 3 4 5 6 Prev Number of T rap Managers. Specifies the number of SNMP trap managers that are to receive traps for this unit.
ACCULINK 317x E1 DSU/CSU C-22 December 1996 3170-A2-GB20-20 T able C-10 (2 of 2) SNMP T rap Configuration Options Entp T rap: Enab Next Enab Disab Prev Enterprise Specific T raps. Specifies whether enterpriseSpecific traps are enabled. For more information, refer to the SNMP T raps section in Chapter 4, Maintenance .
Configuration Options C-23 3170-A2-GB20-20 December 1996 Configuration W orksheets This section contains one set of blank worksheets to be used when configuring your E1 DSU/CSU in the network. It is recommended that you copy these blank worksheets before using them.
ACCULINK 317x E1 DSU/CSU C-24 December 1996 3170-A2-GB20-20 Prt1 Options V alue Port T ype E530, V .35, RS449 Base Rate Nx64, Nx56 NetDCLB Enab, Disab Port LB Disab, DTLB, DCLB, Both All Ones Disab, D.
Configuration Options C-25 3170-A2-GB20-20 December 1996 Network E1 Interface Network Channel Allocation N1 N2 N3 N4 N5 N6 N7 N8 N9 N10 N1 1 N12 N13 N14 N15 N16 N17 N18 N19 N20 N21 N22 N23 N24 N25 N26 N27 N28 N29 N30 N31 Allocations D1 – D31 indicates allocation to DTE Drop/Insert channels.
ACCULINK 317x E1 DSU/CSU C-26 December 1996 3170-A2-GB20-20 Port Chan Conf Options V alue Assign T o NET , DTE, Prt2, Prt3, Prt4 Assign By Block, Chan Port 1 If Assign By Block Port Rate Nx64: 64, 128.
Configuration Options C-27 3170-A2-GB20-20 December 1996 Port Chan Conf Options V alue Assign T o NET , DTE, Prt1, Prt2, Prt4 Assign By Block, Chan Port 3 If Assign By Block Port Rate Nx64: 64, 128, 1.
ACCULINK 317x E1 DSU/CSU C-28 December 1996 3170-A2-GB20-20 General SNMP Options V alue System Name Edit, Clear System Location Edit, Clear System Contact Edit, Clear CommunityName1 Edit, Clear Access.
D-1 3170-A2-GB20-20 December 1996 Pin Assignments Overview D-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E1 Network Interface D-2 . . . . . . . .
ACCULINK 317x E1 DSU/CSU D-2 December 1996 3170-A2-GB20-20 E1 Network Interface The E1 network interface is either two BNC connectors (T ransmit and Receive) for a 75 ohm unbalanced interface, or an RJ48C, 8-position, unkeyed modular connector (T able D-1) for a 120 ohm balanced interface.
Pin Assignments D-3 3170-A2-GB20-20 December 1996 DTE Drop/Insert Interface The DTE Drop/Insert interface connector is a DB15-type socket connector (T able D-2). For information about using Relay Contact Sense for external DTE loopback, refer to the Extrn DLB configuration option in the DTE Interface Configuration Options section of Appendix C.
ACCULINK 317x E1 DSU/CSU D-4 December 1996 3170-A2-GB20-20 AUX Port Interface The Auxiliary (AUX) port connects to the SNMP LAN Adapter for SNMP applications, or to another E1 DSU/CSU’ s COM port for daisy chain connectivity . ( The SNMP LAN Adapter includes the cable that is needed to attach it to the E1 DSU/CSU.
Pin Assignments D-5 3170-A2-GB20-20 December 1996 COM Port Interface The COM port connects to a PC for front panel emulation, to an ASCII terminal or printer for alarms, to a network device (e.g., a router) for SNMP applications, to the SNMP LAN Adapter for SNMP applications, or to another E1 DSU/CSU’ s AUX port for daisy chain connectivity .
ACCULINK 317x E1 DSU/CSU D-6 December 1996 3170-A2-GB20-20 Figure D-3. COM Port-to-PC Cable Figure D-4. COM Port-to-T erminal/Printer Cable.
Pin Assignments D-7 3170-A2-GB20-20 December 1996 EIA 530A Port Interface Connector The EIA 530A Port Interface DB25 connector information is shown in T able D-5.
ACCULINK 317x E1 DSU/CSU D-8 December 1996 3170-A2-GB20-20 EIA 530A-to-RS449 Cable Interface The EIA 530A-to-RS449 adapter cable (Figure D-5) provides the RS449 interface shown in T able D-6.
Pin Assignments D-9 3170-A2-GB20-20 December 1996 T able D-6 RS449 Cable Interface Signal Circuit Mnemonic CCITT Number Direction Pin Shield — — — 1 Signal Ground SG 102A — 19 Receive Ground R.
ACCULINK 317x E1 DSU/CSU D-10 December 1996 3170-A2-GB20-20 EIA 530A-to-V .35 Cable Interface The EIA 530A-to-V .35 adapter cable (Figure D-6) provides the V .
Pin Assignments D-1 1 3170-A2-GB20-20 December 1996 T able D-7 V .35 Cable Interface Signal CCITT Number Direction Pin Shield — — A Signal Common 102 — B T ransmitted Data 103 T o DSU/CSU P (A) .
ACCULINK 317x E1 DSU/CSU D-12 December 1996 3170-A2-GB20-20 EIA 530A-to-X.21 Cable Interface The EIA 530A-to-X.21 adapter cable (Figure D-7) provides the X.21 interface shown in T able D-8. 2 14 3 16 17 9 4 19 8 10 7 24 11 2 9 4 11 6 13 3 10 5 12 8 7 14 TD-A TD-B RD-A RD-B RXC-A RXC-B RTS-A RTS-B RLSD-A RLSD-B SIG.
Pin Assignments D-13 3170-A2-GB20-20 December 1996 T able D-8 X.21 Cable Interface Signal CCITT Number Direction Pin Signal Common 102 — 8 T ransmitted Data 103 T o DSU/CSU 2 (A) 9 (B) Received Data.
ACCULINK 317x E1 DSU/CSU D-14 December 1996 3170-A2-GB20-20 Power Input Connector The input power connector leads are shown in T able D-9. T able D-9 DC Power Connector Signal Pin Number – 48 Vdc Return 1, 2 – 48 Vdc A 6 – 48 Vdc B 5 +24 Vdc 5 +24 Vdc Return 4 Chassis Ground 3 Optional DC Power Cable The power cable is a 14.
Pin Assignments D-15 3170-A2-GB20-20 December 1996 External Clock Interface The External Clock connector pinouts are in T able D-10. A cable diagram is shown in Figure D-9.
E-1 3170-A2-GB20-20 December 1996 SNMP MIB Objects Overview E-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Management Information Base (MIB) II (RFC 1213) E-1 .
ACCULINK 317x E1 DSU/CSU E-2 December 1996 3170-A2-GB20-20 IP Group Supported. ICMP Gr oup Supported. TCP Group Not supported since the TCP protocol is not supported by the E1 DSU/CSU. UDP Group Supported. EGP Group Not supported since the EGP protocol is not supported by the E1 DSU/CSU.
E-3 3170-A2-GB20-20 December 1996 Interface Group – “ifIndex” Object (ifEntry 1) This object provides the index into the ifT able and typically into tables in other MIBs also. The values of the ifIndex object do not vary between models even though not all indexes are supported for a particular model.
ACCULINK 317x E1 DSU/CSU E-4 December 1996 3170-A2-GB20-20 Interface Group – “ifMtu” Object (ifEntry 4) This object identifies the lar gest datagram that can be sent or received on the interface. It is applicable only to the interface configured as the SNMP management link.
E-5 3170-A2-GB20-20 December 1996 Interface Group – “ifLastChange” Object (ifEntry 9) This object contains the value of “sysUpT ime” at the time the interface entered its current operational state. For the E1 DSU/CSU, this object is only updated for the “up” and “down” states.
ACCULINK 317x E1 DSU/CSU E-6 December 1996 3170-A2-GB20-20 IP Group – “ipRouteT able” Object (ip 21) The routing table used by the E1 DSU/CSU is supported as a read/write table. Entries in this table may be added, deleted, or changed. Y ou should exercise great caution when adding or modifying routes in the ipRoutingT able.
E-7 3170-A2-GB20-20 December 1996 IP Group – “ipRouteProto” Object (ipRouteEntry 9) This object is a read-only object and may have the following values in the E1 DSU/CSU. • other(1) – T emporary route added by IP . • local(2) – Route added or modified as a result of user configuration via the front panel.
ACCULINK 317x E1 DSU/CSU E-8 December 1996 3170-A2-GB20-20 DS1/E1 MIB (RFC 1406) The “ds1” object defined by RFC 1406 is supported for both the network and DTE Drop/Insert interfaces. The DS1 Near End Group and DS1 Fractional Group are supported for both interfaces.
E-9 3170-A2-GB20-20 December 1996 Near End Group – “dsx1CircuitIdentifier” Object (dsx1ConfigEntry 8) This object is only supported on the network interface. Near End Group – “dsx1LoopbackConfig” Object (dsx1ConfigEntry 9) This object specifies the loopback state of the E1 interfaces.
ACCULINK 317x E1 DSU/CSU E-10 December 1996 3170-A2-GB20-20 Near End Group – “dsx1Fdl” Object (dsx1ConfigEntry 13) This object specifies how Facility Data Link is being used. Only the following values are supported by the E1 DSU/CSU. More than one value may be active at a time.
E-1 1 3170-A2-GB20-20 December 1996 The DS1 Fractional Group, DS1/E1 MIB The DS1 Fractional group consists of the DS1 fractional table. This table (dsx1FracT able) is fully supported by the E1 DSU/CSU and allows channel (time slots) to be mapped between the E1 interfaces and data ports.
ACCULINK 317x E1 DSU/CSU E-12 December 1996 3170-A2-GB20-20 General Port T able – “rs232PortT ype” Object (rs232PortEntry 2) This object is used to identify the port’ s hardware type. Only the following values are supported by the E1 DSU/CSU. • rs232(2) – Used to identify the AUX and COM ports.
E-13 3170-A2-GB20-20 December 1996 Asynchronous Port T able, “rs232AsyncPortParity” (rs232AsyncPortEntry 4) This object specifies the parity used by the port. Only the following values are supported by the E1 DSU/CSU. • none(1) – No parity bit.
ACCULINK 317x E1 DSU/CSU E-14 December 1996 3170-A2-GB20-20 Output Signal T able – “rs232OutSigChanges” (rs232OutSigEntry 4) This object is not supported by the E1 DSU/CSU. Generic-Interface Extension MIB (RFC 1229) The generic-interface MIB is an experimental MIB that provides extensions to the generic interface group defined in MIB II.
E-15 3170-A2-GB20-20 December 1996 • testSendV54Up – OBJECT IDENTIFIER ::= [wellKnownT ests 7] • testSendV54Down – OBJECT IDENTIFIER ::= [wellKnownT ests 8] • testSend1in8 – OBJECT IDENTIF.
ACCULINK 317x E1 DSU/CSU E-16 December 1996 3170-A2-GB20-20 Correlation between Menu Commands and SNMP Objects T able E-1 provides a correlation between how a function is performed or status is displayed on the front panel and how the same function is accomplished using access to the SNMP database.
E-17 3170-A2-GB20-20 December 1996 T able E-1 (2 of 3) SNMP MIB to Front Panel Command Cross-Reference Front Panel Command SNMP MIB Object Stat–>T stat: LLB T est Active PLB T est Active RLB T es.
ACCULINK 317x E1 DSU/CSU E-18 December 1996 3170-A2-GB20-20 T able E-1 (3 of 3) SNMP MIB to Front Panel Command Cross-Reference Front Panel Command SNMP MIB Object T est–>Ptrns–>Send–>5.
F-1 3170-A2-GB20-20 December 1996 IP Network Addressing Scenario Overview F-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . IP Network Addressing F-1 .
ACCULINK 317x E1 DSU/CSU F-2 December 1996 3170-A2-GB20-20 ETHERNET 135.18.1.2 496-14645-03 LAN ADAPTER COMSPHERE 3610 COMSPHERE 3610 COMSPHERE 3610 COMSPHERE 3610 COMSPHERE 3610 COMSPHERE 3610 COMSPHERE 3610 135.18.1.3 135.18.1.4 135.18.1.5 135.18.1.
G-1 3170-A2-GB20-20 December 1996 Front Panel Emulation Overview G-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Installing Front Panel Emulation Software G-1 .
ACCULINK 317x E1 DSU/CSU G-2 December 1996 3170-A2-GB20-20 Starting Front Panel Emulation If the E1 DSU/CSU selected is not locally attached to the PC, you must first dial to the remote E1 DSU/CSU before starting front panel emulation.
H-1 3170-A2-GB20-20 December 1996 Equipment List Equipment Feature Number COMCODE Model 3172 DSU/CSU (120 V ac) 3172-A1-310 107608903 Model 3174 DSU/CSU (120 V ac) 3174-A1-310 10760891 1 Model 3172 DS.
Glossary-1 3170-A2-GB20-20 December 1996 Glossary Activ Active configuration area. The configuration option set that is currently active for the device. Before a configuration option set becomes active, you must save the set to the Active configuration area.
ACCULINK 317x E1 DSU/CSU Glossary-2 December 1996 3170-A2-GB20-20 bit Binary digit. The smallest unit of information, representing a choice between a one or a zero (sometimes called mark or space). block allocation method A method of allocating DS0 channels as a group rather than individually .
Glossary Glossary-3 3170-A2-GB20-20 December 1996 CRC6 CRC using six check bits. CSA Canadian Standards Association. CSU Channel Service Unit. Protects the E1 line from damage and regenerates the E1 signal. Ctrl branch Control branch of the E1 DSU/CSU menu tree.
ACCULINK 317x E1 DSU/CSU Glossary-4 December 1996 3170-A2-GB20-20 DSU Data Service Unit. Data communications equipment that provides an interface between the DTE and the digital network. DS0 Digital Signal Level 0. A 64 kbps standard signal or channel.
Glossary Glossary-5 3170-A2-GB20-20 December 1996 frame relay A switching interface that is designed to get frames from one part of the network to another as quickly as possible.
ACCULINK 317x E1 DSU/CSU Glossary-6 December 1996 3170-A2-GB20-20 Lpbk branch Local Loopback branch of the E1 DSU/CSU menu tree. LQR Link Quality Reports. manager (SNMP) The device that queries agents for management information, or receives unsolicited messages (traps) indicating the occurrence of specific events.
Glossary Glossary-7 3170-A2-GB20-20 December 1996 power -up self-test A test that checks most hardware components when power is applied to the device or a reset is initiated. PPP Point-to-Point Protocol. A link layer protocol used by SNMP . PRBS Psuedo-Random Bit Sequence.
ACCULINK 317x E1 DSU/CSU Glossary-8 December 1996 3170-A2-GB20-20 self-test A test that checks most hardware components when power is applied to the device or a reset is initiated. server A device that of fers a specific service, such as database management, to a client.
Glossary Glossary-9 3170-A2-GB20-20 December 1996 warmStart trap An SNMP trap that indicates that the device has reinitialized itself. wireless communications The transmission of voice and/or data over the airwaves. XTXC External T ransmit Clock. V .24 circuit 1 13.
Index-1 3170-A2-GB20-20 December 1996 Index A abort lamp test, 4-24 loopback, 4-19–4-20 test patterns, 4-22–4-23 ac power module, 1-5, B-1 Activ (Active) configuration area functional description, 3-1 1 in the menu tree, A-1 addressing.
ACCULINK 317x E1 DSU/CSU Index-2 December 1996 3170-A2-GB20-20 DTE Interface, C-2 General, C-12 Network Interface, C-7 Port, C-3–C-6 SNMP , C-17–C-22 User Interface, C-13–C-15 worksheets, C-23.
Index-3 3170-A2-GB20-20 December 1996 G Gen (General) Configuration branch example of use, 3-34–3-35 in the menu tree, A-1 option table, C-12 option worksheet, C-23 H HDB3 (High Density Bipolar 3) coding configuration option, C-2 Self-T est Health message, 4-2 I ID (Identity) branch example of use, 3-8 in the menu tree, A-1 indicators.
ACCULINK 317x E1 DSU/CSU Index-4 December 1996 3170-A2-GB20-20 channel allocation procedure, 3-20–3-26 configuration options, C-7 failure message, 4-2 front panel LED indications, 3-5 functional des.
Index-5 3170-A2-GB20-20 December 1996 S secondary clock configuration option, C-12 functional description, 3-33 self-test displaying results, 4-2 front panel indications, 2-9, 3-5 troubleshooting, 4-1.
An important point after buying a device Paradyne 317x E1 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Paradyne 317x E1 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Paradyne 317x E1 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Paradyne 317x E1 you will learn all the available features of the product, as well as information on its operation. The information that you get Paradyne 317x E1 will certainly help you make a decision on the purchase.
If you already are a holder of Paradyne 317x E1, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Paradyne 317x E1.
However, one of the most important roles played by the user manual is to help in solving problems with Paradyne 317x E1. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Paradyne 317x E1 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
