Instruction/ maintenance manual of the product 336x E1 Paradyne
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ACCULINK 336x E1 NETWORK TERMINA TION UNIT OPERA T OR’S GUIDE Document No. 3360-A2-GB20-20 December 1996.
ACCULINK 336x E1 NTU A December 1996 3360-A2-GB20-20 ACCULINK 336x E1 Network T ermination Unit Operator ’s Guide 3360-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 3360-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 336x E1 NTU C December 1996 3360-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.
i 3360-A2-GB20-20 December 1996 T able of Contents Preface Objectives and Reader Assumptions iii . . . . . . . . . . . . . . . . . . . . . . . . . Related Documents iii . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Reference Documents iii .
ACCULINK 336x E1 NTU ii December 1996 3360-A2-GB20-20 4. Maintenance Overview 4-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Self-T est Health 4-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
iii 3360-A2-GB20-20 December 1996 Preface Objectives and Reader Assumptions This operator ’ s guide contains installation, operation, and maintenance information for the ACCULINK 336x E1 Network T ermination Unit (NTU). It is assumed that you are familiar with the operation of digital data communication equipment and NTUs in particular .
1-1 3360-A2-GB20-20 December 1996 Introduction Overview 1-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Features 1-1 . . . . . . . . . . . . . . . .
ACCULINK 336x E1 NTU 1-2 December 1996 3360-A2-GB20-20 G.703 DTE Interface The G.703 DTE interface is compatible with the signal format of ITU Recommendation G.703 and the frame structure of ITU Recommendation G.704. This interface allows DTEs/PBXs to share the network with other high-speed equipment.
Introduction 1-3 3360-A2-GB20-20 December 1996 Physical Description The 336x Series consists of a Model 3360 NTU (2-port), a Model 3364 NTU (4-port), and a Model 3365 NTU (1-port).
ACCULINK 336x E1 NTU 1-4 December 1996 3360-A2-GB20-20 495-1473 3 AUX PORT COM PORT POWER HDSL NETWORK 120 Ω 75 Ω TX RX OPEN EARTH 75 Ω 120 Ω IN OUT 75 Ω G.703 PORT 3 PORT 4 PORT 2 PORT 1 CLOCK IN CAUTION: AUX PORT OR COM PORT MUST NOT BE CONNECTED T O HDSL NETWORK RX SHIELD Figure 1-2.
Introduction 1-5 3360-A2-GB20-20 December 1996 495-1473 2 AUX PORT COM PORT POWER HDSL NETWORK 120 Ω 75 Ω TX RX RX SHIELD OPEN EARTH 75 Ω 120 Ω IN OUT 75 Ω G.
2-1 3360-A2-GB20-20 December 1996 Installation Overview 2-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Application Examples 2-1 . . . . . . . . . .
ACCULINK 336x E1 NTU 2-2 December 1996 3360-A2-GB20-20 496-14735-0 1 NETWORK NTU NTU LAN ROUTER LAN ROUTER AAC LT U AAC LT U HDSL HDSL Figure 2-2. Point-to-Point Application Example LAN ROUTER LAN ROUTER LAN ROUTER 496-14737-0 1 NTU DSU/CSU DSU/CSU LAN ROUTER FRACTIONAL NETWORK AAC LT U E1 E1 HDSL Figure 2-3.
Installation 2-3 3360-A2-GB20-20 December 1996 SNMP Connection Examples The E1 NTU 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 2-4 ). • Connecting the COM port to a network device (e.
ACCULINK 336x E1 NTU 2-4 December 1996 3360-A2-GB20-20 LAN ROUTER ETHERNET SNMP NMS SNMP PPP 496-14740-01 LAN ADAPTER NTU NETWORK AAC LT U HDSL Figure 2-6.
Installation 2-5 3360-A2-GB20-20 December 1996 Important Instructions Read and follow all warning notices and instructions marked on the E1 NTU or included in this guide. For a complete listing of the safety instructions, see the Important Safety Instructions section at the beginning of this guide.
ACCULINK 336x E1 NTU 2-6 December 1996 3360-A2-GB20-20 Installing the Single – 48 Vdc Power Supply T o install the E1 NTU using a single source – 48 Vdc power supply , refer to Figure 2-10 and use the following procedure. T o install the – 48 Vdc single source power supply , 1.
Installation 2-7 3360-A2-GB20-20 December 1996 Installing the Redundant – 48 Vdc Power Supply T o install the E1 NTU using a redundant – 48 Vdc power supply , refer to Figure 2-1 1 and use the following procedure. T o install the redundant – 48 Vdc power supply , 1.
ACCULINK 336x E1 NTU 2-8 December 1996 3360-A2-GB20-20 Cabling Examples The E1 NTU is supplied with an ac power module. Optional cables that you can order from the company are described in Appendix D, Pin Assignments . Figure 2-12 illustrates some cabling examples.
Installation 2-9 3360-A2-GB20-20 December 1996 Power-Up Self-T est After you connect the E1 NTU to a power source, the unit performs the power-up self-test to ensure that it is in good working order .
3-1 3360-A2-GB20-20 December 1996 Operation Overview 3-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Using the Front Panel 3-2 . . . . . . . . . . .
ACCULINK 336x E1 NTU 3-2 December 1996 3360-A2-GB20-20 Overview This chapter contains information for operating your E1 NTU. It includes a description of the front panel and sample procedures for configuring the E1 NTU. Using the Front Panel The E1 NTU front panel ( Figure 3-1 ) consists of an LCD, a keypad, test jacks, and 12 LEDs.
Operation 3-3 3360-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 336x E1 NTU 3-4 December 1996 3360-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 3360-A2-GB20-20 December 1996 T able 3-1 System LEDs Name Color Meaning OK Green Indicates the current operational state of the E1 NTU. ON : The E1 NTU is operational and has power . OFF : The E1 NTU is performing a power-up self-test or a system failure has occurred.
ACCULINK 336x E1 NTU 3-6 December 1996 3360-A2-GB20-20 T able 3-3 G.703 DTE Port LEDs Name Color Meaning SIG Green Monitors the signal being received from the G.703 DTE port. ON : A recoverable signal is being received from the G.703 DTE port. OFF : The signal cannot be recovered from the G.
Operation 3-7 3360-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 336x E1 NTU 3-8 December 1996 3360-A2-GB20-20 Displaying Unit Identity The identity of the E1 NTU (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 3360-A2-GB20-20 December 1996 T o change the customer identification (CID), 1. From the top-level menu, press the key until the Ctrl selection appears on the screen. F1 E 1 H D S L N T U Stat T est Cnfig F2 F3 2. Select Ctrl. F1 E 1 H D S L N T U T est Cnfig Ctrl F2 F3 3.
ACCULINK 336x E1 NTU 3-10 December 1996 3360-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 NTU is being accessed remotely (see Appendix G, Fr ont Panel Emulation ).
Operation 3-1 1 3360-A2-GB20-20 December 1996 Selecting the G.703 DTE or Data Port for LED Display Use the LED command on the Control branch to select which port’ s (G.703 DTE or data port) status appears on the five shared LEDs on the front panel. NOTE The following procedure is an example only .
ACCULINK 336x E1 NTU 3-12 December 1996 3360-A2-GB20-20 • Customer 1 (Cust1) . The first of two sets of customer -defined configuration options. This area can be written to. • Customer 2 (Cust2) . The second of two sets of customer -defined configuration options.
Operation 3-13 3360-A2-GB20-20 December 1996 Saving Edit Changes Save edit changes to the Active area when you want those changes to take effect 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 336x E1 NTU 3-14 December 1996 3360-A2-GB20-20 T o copy the configuration options to one or all ports, 6. From the Port Select screen, select Copy . F1 Port Select: Copy Prt1 Prt2 F2 F3 7. Select the port fr om which you want to copy the configuration options using the corresponding Function key .
Operation 3-15 3360-A2-GB20-20 December 1996 7. Select SNMP 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 336x E1 NTU 3-16 December 1996 3360-A2-GB20-20 10. When you are through changing the IP address, you must press F3 (Save) to save the value. Otherwise, the original value will be retained.
Operation 3-17 3360-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 NTU’ s MIB.
ACCULINK 336x E1 NTU 3-18 December 1996 3360-A2-GB20-20 1 1. Press F1 (Next) until the Access 1 configuration option appears. 12. Press F2 (Read) or F3 (R/W). F1 Access 1: Next Read R/W F2 F3 The Read selection allows read-only access (SNMP “Get”) to the accessible objects in the MIB when community name 1 is used.
Operation 3-19 3360-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 336x E1 NTU 3-20 December 1996 3360-A2-GB20-20 9. Press F1 (Next) until the T rap n Destination configuration appears, and select the destination for the SNMP trap by using the appropriate Function key .
Operation 3-21 3360-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 D13 D14 D15 D16 D17 D18 D19 D20 D21 D22 D23 D24 D25 D26 D27 D28 D29 D30 D31 PRT 1 PRT 2 PRT 3 PRT 4 PORTS G.
ACCULINK 336x E1 NTU 3-22 December 1996 3360-A2-GB20-20 Network 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 N17 N18.
Operation 3-23 3360-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 D13 D14 D15 D16 D17 D18 D19 D20 D21 D22 D23 D24 D25 D26 D27 D28 D29 D30 D31 PRT 1 PRT 2 PRT 3 PRT 4 PORTS G.
ACCULINK 336x E1 NTU 3-24 December 1996 3360-A2-GB20-20 Network 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 Prt1 N1.
Operation 3-25 3360-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 336x E1 NTU 3-26 December 1996 3360-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, 19.
Operation 3-27 3360-A2-GB20-20 December 1996 NOTE The following procedures are examples only . Screen displays may vary depending on the model and configuration of the E1 NTU. Displaying DS0 Channel Assignments Use the Display command (in the Channel Configuration branch) to view how the DS0 channels are currently allocated.
ACCULINK 336x E1 NTU 3-28 December 1996 3360-A2-GB20-20 8. If you selected NET the channels allocated to the network interface are displayed. Line 1 displays the 31 channels for the network interface, while Line 2 displays what is allocated to the DS0 channel shown in Line 1.
Operation 3-29 3360-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 336x E1 NTU 3-30 December 1996 3360-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 By: Next Block Chan F2 F3 2.
Operation 3-31 3360-A2-GB20-20 December 1996 7. From the DTE Channels screen, select TS16. F1 DTE Channels: TS16 Assign F2 F3 8. Pressing F2 (Rsvd) reserves time-slot 16 for Common-Channel Signaling (CSS). Pressing F3 (CAS) selects Channel-Associated Signaling.
ACCULINK 336x E1 NTU 3-32 December 1996 3360-A2-GB20-20 Clearing DS0 Channel Allocation Y ou can clear (deallocate) all the DS0 channels currently allocated to either the network interface, the G.703 DTE interface, or the synchronous data ports. T o clear DS0 channel allocation, 1.
Operation 3-33 3360-A2-GB20-20 December 1996 Selecting the T iming Source The E1 NTU 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 NTU. The clock for each interface is at the appropriate rate for that interface (e.
ACCULINK 336x E1 NTU 3-34 December 1996 3360-A2-GB20-20 Configuring for Network Timing T o configure for network timing, 1. From the top-level menu screen, select Cnfig. 2. Select the configuration option set to be copied into the Edit area by using the appropriate Function key .
Operation 3-35 3360-A2-GB20-20 December 1996 8. Select the appropriate external clock rate by pressing the corresponding Function key . This step is mandatory if you have chosen external clocking.
ACCULINK 336x E1 NTU 3-36 December 1996 3360-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 3360-A2-GB20-20 December 1996 E1 NTU User Interface Access Security The E1 NTU User Interface Access Security section of this document is not available for viewing online due to its security-sensitive contents. T o order this manual, please contact your sales or service representative.
4-1 3360-A2-GB20-20 December 1996 Maintenance Overview 4-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Self-T est Health 4-2 . . . . . . . . . . . .
ACCULINK 336x E1 NTU 4-2 December 1996 3360-A2-GB20-20 Self-T est Health Use the Self-T est Health command to display the results of the power-up self-test. Possible messages are listed in T able 4-1 . See Chapter 2, Installation , for more information about power-up self-test.
Maintenance 4-3 3360-A2-GB20-20 December 1996 Device Health and Status Use the Device Health and Status branch to view the current health and status messages for the E1 NTU. T able 4-2 lists these messages in priority order . T o display device health and status, 1.
ACCULINK 336x E1 NTU 4-4 December 1996 3360-A2-GB20-20 T able 4-2 (2 of 2) Health and Status Messages Message Description EER at DTE An Excessive Error Rate condition has been detected on the G.703 DTE interface. The condition is cleared when the error rate falls below the threshold value (10 -4 ) for 5 seconds.
Maintenance 4-5 3360-A2-GB20-20 December 1996 HDSL Loop Performance Use the HDSL Loop Performance branch to view the signal quality and loop loss messages for each loop on the local E1 NTU. T able 4-3 lists these messages. T o display HDSL loop performance, 1.
ACCULINK 336x E1 NTU 4-6 December 1996 3360-A2-GB20-20 Performance Reports Network performance is continuously monitored and maintained in network registers (NET), in G.703 DTE registers (DTE) and, if configured to do so, in far-end and near -end port registers (Prt n , where n is 1, 2, 3, or 4).
Maintenance 4-7 3360-A2-GB20-20 December 1996 7. When you press F1 from the E1 Registers screen, the E1 registers for the current 15-minute interval appear . F1 E1 Current: Event = xx , xxx F2 F3 8. When you press F2 from the E1 Registers screen, the E1 registers for the 24-hour total interval appear .
ACCULINK 336x E1 NTU 4-8 December 1996 3360-A2-GB20-20 T able 4-4 (1 of 2) Performance Registers Register Interval Description T otals Description Event (Not valid for Lp n registers.) Error events counter . An error event is a frame with either a Cyclic Redundancy Check (CRC) error or an Out Of Frame (OOF) event.
Maintenance 4-9 3360-A2-GB20-20 December 1996 T able 4-4 (2 of 2) Performance Registers Register T otals Description Interval Description LOFC (Not valid for Lp n registers.) The loss of frame count for the current interval. This is a count of the number of times that an LOF is declared.
ACCULINK 336x E1 NTU 4-10 December 1996 3360-A2-GB20-20 Alarms The E1 NTU 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.
Maintenance 4-1 1 3360-A2-GB20-20 December 1996 SNMP T raps A trap is an unsolicited message that is sent from the E1 NTU 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.
ACCULINK 336x E1 NTU 4-12 December 1996 3360-A2-GB20-20 T roubleshooting The E1 NTU is designed to provide you with many years of trouble-free service. However , T able 4-7 gives you some direction if a problem occurs. For problems other than those listed in the table, please contact your service representative.
Maintenance 4-13 3360-A2-GB20-20 December 1996 T able 4-7 (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 Facility problem. Contact your facility provider .
ACCULINK 336x E1 NTU 4-14 December 1996 3360-A2-GB20-20 T est Jacks Six test jacks are located on the front panel ( Figure 4-1 ). These test jacks allow for four break-in tests and two monitor access points to the E1 NTU. T est jack functions are shown in Figure 4-2 and described in T able 4-8 .
Maintenance 4-15 3360-A2-GB20-20 December 1996 T est Commands The test commands enable you to run loopbacks and test patterns on the E1 NTU, and to test the front panel LEDs. These tests can help you isolate areas of trouble if you are having problems with your E1 NTU.
ACCULINK 336x E1 NTU 4-16 December 1996 3360-A2-GB20-20 Local Loopback T ests The Local Loopback tests enable you to conduct circuit testing and fault isolation for the digital line.
Maintenance 4-17 3360-A2-GB20-20 December 1996 Starting a Line Loopback The Line Loopback command (LLB) loops the received signal on the network interface back to the network without change. All ones are transmitted on the G.703 DTE port for the DS0 channels allocated to the network interface.
ACCULINK 336x E1 NTU 4-18 December 1996 3360-A2-GB20-20 Starting a DTE Loopback The DTE Loopback command (DLB) loops the received signal on the G.703 DTE port back to the DTE without change. All ones are inserted into the DS0 channels allocated to the G.
Maintenance 4-19 3360-A2-GB20-20 December 1996 3. From the Loopback screen, press the key until the RLB selection appears on the screen. F1 Loopback: Abort LLB PLB F2 F3 4. Select RLB. F1 Loopback: PLB DLB RLB F2 F3 T est Started appears on Line 2. If a Repeater loopback is already in progress, the Alr eady Active message appears.
ACCULINK 336x E1 NTU 4-20 December 1996 3360-A2-GB20-20 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.
Maintenance 4-21 3360-A2-GB20-20 December 1996 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: Abort All LLB PLB F2 F3 If you select ALL, LLB, PLB, DLB, or RLB, skip Step 5.
ACCULINK 336x E1 NTU 4-22 December 1996 3360-A2-GB20-20 4. From the Patterns Send screen, press F1 to send a 32767 pattern, F2 to send a 51 1 pattern, F3 to send a 1-in-8 pattern, or press the key and the appropriate Function key to send a QRSS pattern.
Maintenance 4-23 3360-A2-GB20-20 December 1996 Monitoring T est Patterns Use the Monitor command to monitor 32767, QRSS, or 51 1 test patterns. This command provides the number of errors detected in the test pattern (5 digits, maximum 99999). T o monitor a 32767, QRSS, or 51 1 test pattern, 1.
ACCULINK 336x E1 NTU 4-24 December 1996 3360-A2-GB20-20 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.
Maintenance 4-25 3360-A2-GB20-20 December 1996 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.
ACCULINK 336x E1 NTU 4-26 December 1996 3360-A2-GB20-20 T able 4-1 1 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 3360-A2-GB20-20 December 1996 Front Panel Menu NOTE Some selections are not available on 1-port and 2-port E1 NTUs. E1 HDSL NTU Stat T est 495-1475 6 E1 Prt n Rlpbk Lpbk Ptrns Lamp NET DevHs ST es.
B-1 3360-A2-GB20-20 December 1996 T echnical Specifications Overview B-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Overview The technical specifications for the Models 3360, 3364, and 3365 NTUs are listed in T able B-1 .
ACCULINK 336x E1 NTU B-2 December 1996 3360-A2-GB20-20 T able B-1 (2 of 2) Models 3360/3364/3365 NTUs T echnical Specifications Specifications Criteria APPROV ALS CISPR 22 Class A compliant CLOCKING SOURCES HDSL Network interface, synchronous data port, internal clock, G.
C-1 3360-A2-GB20-20 December 1996 Configuration Options Overview C-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DTE Interface Configuration Options C-2 .
ACCULINK 336x E1 NTU C-2 December 1996 3360-A2-GB20-20 DTE Interface Configuration Options T able C-1 DTE Interface Configuration Options DTE Port: Enab Next Enab Disab Prev G.703 DTE Port. Enables the use of the G.703 DTE port. Enab – Allows the use of the G.
Configuration Options C-3 3360-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 X.21 Prev Data Port T ype. Allows selection of the data port interface type. E530 – Configures the port as an EIA 530A compatible interface.
ACCULINK 336x E1 NTU C-4 December 1996 3360-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 3360-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 336x E1 NTU C-6 December 1996 3360-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 3360-A2-GB20-20 December 1996 Network Interface Configuration Options T able C-3 Network Interface Configuration Options HDSL Mode: NTU Next NTU L TU Prev HDSL Mode. Specifies whether the operating mode is Network T ermination Unit (NTU) or Line T ermination Unit (L TU).
ACCULINK 336x E1 NTU C-8 December 1996 3360-A2-GB20-20 Channel Configuration Options The Channel configuration options are divided into two tables as follows: • DTE Channel Configuration Options ( T able C-4 ) • Data Port Channel Configuration Options ( T able C-5 ) NOTE T ables C-4 and C-5 describe the DTE and data port configuration options.
Configuration Options C-9 3360-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 336x E1 NTU C-10 December 1996 3360-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 1024 .
Configuration Options C-1 1 3360-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 336x E1 NTU C-12 December 1996 3360-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 NTU.
Configuration Options C-13 3360-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 NTU performs a device self-test at power-up and after a device reset.
ACCULINK 336x E1 NTU C-14 December 1996 3360-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. 1.2 – Sets the bit rate to 1200 bps.
Configuration Options C-15 3360-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 NTU ignores the state of the Data T erminal Ready (DTR) input to the communication port.
ACCULINK 336x E1 NTU C-16 December 1996 3360-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 3360-A2-GB20-20 December 1996 SNMP Configuration Options The SNMP configuration options are divided into two tables as follows: • General SNMP Configuration Options ( T ab.
ACCULINK 336x E1 NTU C-18 December 1996 3360-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 3360-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 336x E1 NTU C-20 December 1996 3360-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 3360-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 336x E1 NTU C-22 December 1996 3360-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 3360-A2-GB20-20 December 1996 Configuration W orksheets This section contains one set of blank worksheets to be used when configuring your E1 NTU in the network. It is recommended that you copy these blank worksheets before using them.
ACCULINK 336x E1 NTU C-24 December 1996 3360-A2-GB20-20 Prt1 Options V alue Port T ype E530, V .35, RS449, X.21 NetDCLB Enab, Disab Port LB Disab, DTLB, DCLB, Both All Ones Disab, DTR, RTS, Both Rcv R.
Configuration Options C-25 3360-A2-GB20-20 December 1996 Network 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 (G.
ACCULINK 336x E1 NTU C-26 December 1996 3360-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, 19.
Configuration Options C-27 3360-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 336x E1 NTU C-28 December 1996 3360-A2-GB20-20 General SNMP Options V alue System Name Edit, Clear System Location Edit, Clear System Contact Edit, Clear CommunityName1 Edit, Clear Access 1 R.
D-1 3360-A2-GB20-20 December 1996 Pin Assignments Overview D-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HDSL Network Interface D-1 . . . . . . .
ACCULINK 336x E1 NTU D-2 December 1996 3360-A2-GB20-20 G.703 DTE Interface The G.703 DTE interface is either two BNC connectors (T ransmit and Receive) for a 75 ohm unbalanced interface, or a DB15-type socket connector ( T able D-2 ) for a 120 ohm balanced interface.
Pin Assignments D-3 3360-A2-GB20-20 December 1996 AUX Port Interface The Auxiliary (AUX) port connects to the SNMP LAN Adapter for SNMP applications, or to another E1 NTU’ s COM port for daisy chain connectivity . (The SNMP LAN Adapter includes the cable that is needed to attach it to the E1 NTU.
ACCULINK 336x E1 NTU D-4 December 1996 3360-A2-GB20-20 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 NTU’ s AUX port for daisy chain connectivity .
Pin Assignments D-5 3360-A2-GB20-20 December 1996 Figure D-2. COM Port-to-PC Cable Figure D-3. COM Port-to-T erminal/Printer Cable.
ACCULINK 336x E1 NTU D-6 December 1996 3360-A2-GB20-20 EIA 530A Port Interface Connector The EIA 530A Port interface connector information is shown in T able D-5 .
Pin Assignments D-7 3360-A2-GB20-20 December 1996 EIA 530A-to-RS449 Cable Interface The EIA 530A-to-RS449 adapter cable ( Figure D-4 ) provides the RS449 interface shown in T able D-6 .
ACCULINK 336x E1 NTU D-8 December 1996 3360-A2-GB20-20 T able D-6 RS449 Cable Interface Signal Circuit Mnemonic CCITT Number Direction Pin Shield — — — 1 Signal Ground SG 102A — 19 Receive Gro.
Pin Assignments D-9 3360-A2-GB20-20 December 1996 EIA 530A-to-V .35 Cable Interface The EIA 530A-to-V .35 adapter cable ( Figure D-5 ) provides the V .
ACCULINK 336x E1 NTU D-10 December 1996 3360-A2-GB20-20 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 NTU P (A) .
Pin Assignments D-1 1 3360-A2-GB20-20 December 1996 EIA 530A-to-X.21 Cable Interface The EIA 530A-to-X.21 adapter cable ( Figure D-6 ) 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.
ACCULINK 336x E1 NTU D-12 December 1996 3360-A2-GB20-20 T able D-8 X.21 Cable Interface Signal CCITT Number Direction Pin Signal Common 102 — 8 T ransmitted Data 103 T o NTU 2 (A) 9 (B) Received Dat.
Pin Assignments D-13 3360-A2-GB20-20 December 1996 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.
ACCULINK 336x E1 NTU D-14 December 1996 3360-A2-GB20-20 External Clock Interface The External Clock connector pinouts are in T able D-10 . A cable diagram is shown in Figure D-8 .
E-1 3360-A2-GB20-20 December 1996 SNMP MIB Objects Overview E-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Management Information Base (MIB) II (RFC 1213) E-1 .
ACCULINK 336x E1 NTU E-2 December 1996 3360-A2-GB20-20 IP Group Supported. ICMP Group Supported. TCP Group Not supported since the TCP protocol is not supported by the E1 NTU. UDP Group Supported. EGP Group Not supported since the EGP protocol is not supported by the E1 NTU.
SNMP MIB Objects E-3 3360-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 336x E1 NTU E-4 December 1996 3360-A2-GB20-20 Interface Group – “ifMtu” Object (ifEntry 4) This object identifies the largest datagram that can be sent or received on the interface. It is applicable only to the interface configured as the SNMP management link.
SNMP MIB Objects E-5 3360-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 NTU, this object is only updated for the “up” and “down” states.
ACCULINK 336x E1 NTU E-6 December 1996 3360-A2-GB20-20 IP Group – “ipRouteT able” Object (ip 21) The routing table used by the E1 NTU 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.
SNMP MIB Objects E-7 3360-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 NTU. • 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 336x E1 NTU E-8 December 1996 3360-A2-GB20-20 DS1/E1 MIB (RFC 1406) The “ds1” object defined by RFC 1406 is supported for both the network and G.703 DTE interfaces. The DS1 Near End Group and DS1 Fractional Group are supported for both interfaces.
SNMP MIB Objects E-9 3360-A2-GB20-20 December 1996 Near End Group – “dsx1LoopbackConfig” Object (dsx1ConfigEntry 9) This object specifies the loopback state of the E1 interfaces. Only the following values are supported by the E1 NTU. • dsx1NoLoop(1) – The E1 interface is not in a loopback state.
ACCULINK 336x E1 NTU E-10 December 1996 3360-A2-GB20-20 Near End Group – The DS1 Current T able Objects (dsx1CurrentEntry) The following DS1 current table objects are provided for the network interface only . Objects in the table that are not listed are not supported and will return an error status if access is attempted.
SNMP MIB Objects E-1 1 3360-A2-GB20-20 December 1996 When time-slot 16 is reserved for signaling, allocated DTE channels must be mapped to the corresponding network channels (e.
ACCULINK 336x E1 NTU E-12 December 1996 3360-A2-GB20-20 synchronous data ports and 0 for the AUX and COM ports. General Port T able – “rs232PortOutSigNumber” Object (rs232PortEntry 4) This object contains the number of output signals contained in the output signal table.
SNMP MIB Objects E-13 3360-A2-GB20-20 December 1996 Synchronous Port T able, RS-232-like MIB The synchronous port table contains an entry for each of the synchronous data ports and the COM port when the port is configured for synchronous operation.
ACCULINK 336x E1 NTU E-14 December 1996 3360-A2-GB20-20 Generic Interface T est T able, Generic Interface MIB The test table provides access to additional tests (loopbacks and pattern tests) that are not in the interfaces group of MIB II.
SNMP MIB Objects E-15 3360-A2-GB20-20 December 1996 Generic Interface T est T able – “ifExtnsT estResult” Object (ifExtnsT estEntry 5) This object contains the result of the most recently requested test. Only the following values are supported by the E1 NTU.
ACCULINK 336x E1 NTU E-16 December 1996 3360-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.
SNMP MIB Objects E-17 3360-A2-GB20-20 December 1996 T able E-1 (2 of 4) SNMP MIB to Front Panel Command Cross-Reference Front Panel Command SNMP MIB Object Stat–>T stat: LLB T est Active PLB T es.
ACCULINK 336x E1 NTU E-18 December 1996 3360-A2-GB20-20 T able E-1 (3 of 4) SNMP MIB to Front Panel Command Cross-Reference Front Panel Command SNMP MIB Object T est–>Lpbk–>DCLB–>Prt n .
SNMP MIB Objects E-19 3360-A2-GB20-20 December 1996 T able E-1 (4 of 4) SNMP MIB to Front Panel Command Cross-Reference Front Panel Command SNMP MIB Object Cnfig–>Activ–>Edit–>Chan–&g.
F-1 3360-A2-GB20-20 December 1996 IP Network Addressing Scenario Overview F-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . IP Network Addressing F-1 .
ACCULINK 336x E1 NTU F-2 December 1996 3360-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 135.18.1.3 135.18.1.4 135.18.1.5 135.18.1.7 135.
G-1 3360-A2-GB20-20 December 1996 Front Panel Emulation Overview G-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Installing Front Panel Emulation Software G-1 .
ACCULINK 336x E1 NTU G-2 December 1996 3360-A2-GB20-20 Starting Front Panel Emulation If the E1 NTU selected is not locally attached to the PC, you must first dial to the remote E1 NTU before starting front panel emulation. The modem attached to the PC must support A T commands for the Front Panel Emulation software to successfully place the call.
H-1 3360-A2-GB20-20 December 1996 Equipment List Equipment Feature Number COMCODE Model 3360 E1 NTU 3360-A1-310 107699035 Model 3364 E1 NTU 3364-A1-310 107699043 Model 3365 E1 NTU 3365-A1-310 10769906.
Glossary-1 3360-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 336x E1 NTU Glossary-2 December 1996 3360-A2-GB20-20 BNC Bayonet-Neill-Concelman. A bayonet-type connector for coaxial cables. bps Bits per second. Indicates the speed at which bits are transmitted across a data connection. BPV Bipolar V iolation.
Glossary Glossary-3 3360-A2-GB20-20 December 1996 CRC Cyclic Redundancy Check. A mathematical method of confirming the integrity of received digital data. CRC4 CRC using four check bits. CRC5 CRC using five check bits. CRC6 CRC using six check bits. CSA Canadian Standards Association.
ACCULINK 336x E1 NTU Glossary-4 December 1996 3360-A2-GB20-20 DSR Data Set Ready . V .24 circuit 107. DS0 Digital Signal Level 0. A 64 kbps standard signal or channel. DS0 channel allocation Assigning specific DS0 channels in the E1 NTU to specific interfaces (HDSL Network, G.
Glossary Glossary-5 3360-A2-GB20-20 December 1996 framing A technique that separates bits into identifiable groups. Generic-Interface Extension MIB An extension to MIB II that defines additional objects for control of generic interfaces in MIB II. Get command (SNMP) Read-only access to SNMP MIB objects.
ACCULINK 336x E1 NTU Glossary-6 December 1996 3360-A2-GB20-20 link trap A trap that identifies the condition of the communications interface (linkDown or linkUp traps). LLB Line Loopback. Loops the received signal on the network interface back to the network without change.
Glossary Glossary-7 3360-A2-GB20-20 December 1996 parity A way of checking data accuracy by counting the number of bits that have a value of one. payload The information bits in a frame. PBX Private Branch Exchange. T elephone switching equipment dedicated to one customer .
ACCULINK 336x E1 NTU Glossary-8 December 1996 3360-A2-GB20-20 reset A reinitialization of the E1 NTU that occurs at power -up or in response to a reset command. RFC Request for Comments. The set of documents that describes the standard specifications for the TCP/IP protocol suite.
Glossary Glossary-9 3360-A2-GB20-20 December 1996 time slot The allocated DS0 channel slot when DS0 channels are combined to form an aggregate bit stream. trap (SNMP) A notification message to the SNMP manager when an unusual event occurs on a network device, such as a reinitialization.
Index-1 3360-A2-GB20-20 December 1996 Index A abort lamp test, 4-25 loopback, 4-20–4-21 test patterns, 4-23–4-24 ac power module, 1-5, B-1 Activ (Active) configuration area functional description, 3-1 1 in the menu tree, A-1 addressing.
ACCULINK 336x E1 NTU Index-2 December 1996 3360-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–C-2.
Index Index-3 3360-A2-GB20-20 December 1996 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 .
ACCULINK 336x E1 NTU Index-4 December 1996 3360-A2-GB20-20 N NET (Network) Configuration branch example of use, 3-12 in the menu tree, A-1 option table, C-7 option worksheet, C-23 network interface ca.
Index Index-5 3360-A2-GB20-20 December 1996 Reset branch example of use, 3-36 in the menu tree, A-1 Rlpbk (Remote Loopback) branch example of use, 4-15 in the menu tree, A-1 RMA (Remote Multiframe Ala.
ACCULINK 336x E1 NTU Index-6 December 1996 3360-A2-GB20-20 U UAS (Unavailable Seconds) report, 4-8 User Configuration branch example of use, 3-14–3-15 in the menu tree, A-1 option table, C-13–C-15 option worksheet, C-23 user interface, acquiring/releasing, 3-35–3-36 V V .
An important point after buying a device Paradyne 336x 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 336x 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 336x E1 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Paradyne 336x E1 you will learn all the available features of the product, as well as information on its operation. The information that you get Paradyne 336x E1 will certainly help you make a decision on the purchase.
If you already are a holder of Paradyne 336x 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 336x E1.
However, one of the most important roles played by the user manual is to help in solving problems with Paradyne 336x E1. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Paradyne 336x 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
