DNT2Mi sp/mp Data Network Terminal Single-port and Multiport Operating Instructions User Manual C33975.
Data Network Terminal Single-port and Multiport Operating Instructions The information in this documentation is subject to change without notice and describes only the product defined in the introduction of this documentation. This documentation is intended for the use of Nokia's customers only for the purposes of the agreement under which the documentation is submitted, and no part of it may be reproduced or transmitted in any form or means without the prior written permission of Nokia.
Contents Contents 3 Summary of changes 7 1 About this document 9 2 Introduction to DNT2Mi 11 3 Applications 13 4 4.1 4.1.1 4.1.2 4.2 4.2.1 Construction and interfaces 15 Front panel 15 Indicators and keys 16 Local management interface 16 Rear panel 19 Terminal interfaces 20 5 5.1 5.2 5.3 5.4 5.5 5.6 5.7 5.7.1 5.7.2 5.7.3 5.7.4 5.7.5 5.8 5.8.1 5.8.2 5.9 5.9.1 5.9.2 5.9.
Data Network Terminal Single-port and Multiport Operating Instructions 4 (128) 6.10 Factory values 47 7 7.1 7.2 7.3 7.4 Maintaining DNT2Mi 49 Getting general information 49 Monitoring alarms 50 Testing 51 Checking measurements and statistics 55 8 8.1 8.2 8.2.1 8.2.2 8.2.3 8.2.4 8.3 8.3.1 8.3.2 8.3.3 8.4 8.4.1 8.4.2 8.4.3 8.4.4 8.4.
Appendix A. 121 A.
Data Network Terminal Single-port and Multiport Operating Instructions 6 (128) © Nokia Corporation Nokia Proprietary and Confidential DN01145897 Issue 2-0 en
Summary of changes Document Date DN01145897 Issue 1–0 en 19 April 2002 DN01145897 Issue 2–0 en 27 March 2003 DN01145897 Issue 2-0 en © Nokia Corporation Nokia Proprietary and Confidential Comment Information on two new D2048 interface units (E62628.10 and E62628.11) added.
Data Network Terminal Single-port and Multiport Operating Instructions 8 (128) © Nokia Corporation Nokia Proprietary and Confidential DN01145897 Issue 2-0 en
About this document 1 About this document These operating instructions introduce the DNT2Mi Data Network Terminal and provide information needed for its installation and use. The terminal interface units that are used in DNT products are presented separately in document DTE Interface Units for Nokia Data Network Terminals Operating Instructions.
Data Network Terminal Single-port and Multiport Operating Instructions 10 (128) © Nokia Corporation Nokia Proprietary and Confidential DN01145897 Issue 2-0 en
Introduction to DNT2Mi 2 Introduction to DNT2Mi Figure 1. Single-port (above) and multiport (below) DNT2Mi terminals Nokia DNT2Mi is a single- or multiport (sp/mp) data access network terminal intended for customer premises. It provides a two-wire or four-wire SHDSL line interface (ITU-T G.991.2) and up to three interchangeable DTE interface units. The following interface units are available (for more information, refer to Table 2): DN01145897 Issue 2-0 en • V.11 • V.28 • V.35 • X.21 • G.
Data Network Terminal Single-port and Multiport Operating Instructions • G.704/2M • EIA-530-A • Ethernet • VF • D2048 Single-port and multiport versions The single-port version offers one of the DTE interface types mentioned above, whereas the multiport version can house up to three independent DTE interface types. Additionally, the multiport version includes Time Division Multiplexing (TDM), which allows dividing the transmission capacity over each DTE interface according to application needs.
Applications 3 Applications The DNT2Mi Data Network Terminal can be used for Local Area Network (LAN) and Private Automatic Branch Exchange (PABX) connections (see Figure 2). The device can be controlled, configured, and tested either by using the front panel keys and the LCD display or via Nokia’s common network management system. PDH network Local Exchange Data PABX SHDSL DNT2Mi Multiport Figure 2.
Data Network Terminal Single-port and Multiport Operating Instructions Data Data PABX PABX LAN-IC SHDSL DNT2Mi multiport Figure 3. LAN-IC DNT2Mi multiport DNT2Mi used in a point-to-point application DNT2Mi provides an n x 64 kbit/s (n = 1 to 32) data access and enables TDM multiplexing of line rates to three n x 64k ports. It also incorporates V.110 rate adaptation enabling port rates lower than 64 kbit/s.
Construction and interfaces 4 Construction and interfaces This chapter introduces the mechanical construction and interfaces of DNT2Mi. 4.1 Front panel The front panel of DNT2Mi includes a display, LED indicators, push-button keys, and a local management connector.
Data Network Terminal Single-port and Multiport Operating Instructions 4.1.1 Indicators and keys Multiport DNT2Mi OK STATUS P1 PWR TEST P2 EXIT P3 DNT2Mi DTR DSR DCD RTS CTS Single-port DNT2Mi OK EXIT STATUS PORT PWR TEST DNT2Mi DTR DSR DCD RTS CTS 1. LED indicators Figure 4. 4.1.2 2. LCD display 3. Front panel keys Indicators and keys of the two DNT2Mi units Local management interface The local management interface is located behind the front panel door (see Figure 5).
Construction and interfaces OK EXIT STATUS P1 P3 PWR TEST P2 DTR DSR DCD RTS CTS Local management connector (RJ-45) 1 8 1. 2. 3. 4. 5. 6. 7. 8. Figure 5. Local management connector Table 1. Management interface cables Code TX21750 TX25741.06 V.28 107 (OUT) 108 (IN) 109 (OUT) SG 103 (IN) 104 (OUT) 105 (IN) 106 (OUT) V.11 Tx b (OUT) Tx a (OUT) SG Rx b (IN) Rx a (IN) Name Connector type Length Management cable Euro c/4 3x7F/D15F 1.
Data Network Terminal Single-port and Multiport Operating Instructions Table 1. Management interface cables (Continued) Code E62711.01 Name Connector type Length Management cable RJ45/D15F 1.5 m RJ45/D25F 3m (ST -> DNT2Mi) DZ60639.
Construction and interfaces 4.2 Rear panel Multiport DNT2Mi G.704 V.11 2. 2. X.21 4. 3. RPWR Line OUT The two upper adapters are upside down 1. b 1. a 2. Single-port DNT2Mi 3. X.21 4. RPWR Line OUT 1. a 1. b 2. Remote-powered DNT2Mi 3. RPWR Line OUT 2. 1. c AC VERSION 1.a X.21 4. DC VERSION 1. b REMOTE-POWERED VERSION 1 a) Mains connection 1 a) DC connection 1 a) Remote power input b) Mains switch b) Ground connection b) DC switch c) Remote power input cable 2.
Data Network Terminal Single-port and Multiport Operating Instructions 6-pin modular jack, RJ-11 Line 123456 Figure 8. 4.2.1 Pin 1. 2. 3. 4. 5. 6. Line interface Line 1a Line 1b Not connected Not connected Line 2a (not in use in 2-w mode) Line 2b (not in use in 2-w mode) Line interface connector Terminal interfaces This section briefly introduces the DTE interface unit options.
Construction and interfaces G.704/2M SYM120 5 432 1 V.11 G.704/2M ASYM75 C R T 9 876 IN/OUT IN 19 1 37 20 OUT V.35 X.21 V.28 8 1 15 9 G.703/64k 8 1 13 25 1 9 15 14 G.703/2M EIA-530-A 1 13 25 14 D2048 G.703/2M SYMM:120 ASYMM. 75 54321 9 876 (IN) (OUT) G.703/2M (BNC) IN G.704/2M 1 8 G.704/2M OUT 1 8 75 75 D2048 (RJ45 + BNC) IN G.704/2M OUT 1 75 Figure 9. DN01145897 Issue 2-0 en D2048 (RJ45 + SMB) IN G.
Data Network Terminal Single-port and Multiport Operating Instructions VF Ethernet EC PWR EA EL WL LMI 10Base-T 1 8 CAS Figure 10. DTE interface options (continued) The interface type is selected by installing an appropriate interface unit. You can do this without opening the terminal's case. The interface unit types are given in Table 2. Table 2. DTE interface adapter units Adapter type Electrically Connector type Product code V.11 V.11, V.10 D37F DS 62603.11 V.24 V.
Installing DNT2Mi 5 Installing DNT2Mi This chapter provides instructions on how to mechanically install and connect DNT2Mi. The menu settings required for bringing the unit into use can be found in Chapter 6. 5.1 Electromagnetic compatibility DNT2Mi complies with EMC specifications (refer to Chapter 10) when the following conditions are fulfilled: 5.2 • The securing screws of the multiport DNT2Mi cover are properly fastened.
Data Network Terminal Single-port and Multiport Operating Instructions 5.3 Clearances around DNT2Mi When installing DNT2Mi on a wall or freely on a horizontal level, you must ensure that there is an adequate space for connecting cables. Recommended clearances are shown in Figure 11. In a modem-shelf installation, slot sizing of the shelf ensures adequate horizontal clearances between the units.
Installing DNT2Mi 5.4 Work order First examine the unit and make sure that it has not been damaged during transportation. Also, check that you have the cables needed for connections (mains cable, DTE cable, line cable). Then proceed according to the steps below: 1. Insert DTE interface units into the DNT2Mi terminal, if needed, refer to Section 5.5. 2. Insert DNT2Mi in a special shelf-like modem subrack or on a wall, if needed, refer to Section 5.7.
Data Network Terminal Single-port and Multiport Operating Instructions To insert DTE interface units: 1. Make sure that the power is switched off. Caution The multiport version of DNT2Mi has three slots and the DTE interface units that go to the upper slots (2 and 3) need to be inserted upside down. 2. Insert a DTE interface unit carefully into the slot. 3. Tighten the two screws. Screws Figure 12.
Installing DNT2Mi 5.6 Free-standing installation Note A free-standing installation of DNT2Mi is allowed only if permitted by the local electric safety regulations! To install DNT2Mi free-standing: 1. Place DNT2Mi on a dry and clean horizontal level. Caution Make sure that the unit may not be dropped incidentally! 5.7 2. Guide the strain relief as advised in Figure 24. 3. Take care of the grounding as advised in Section 5.2.
Data Network Terminal Single-port and Multiport Operating Instructions 2 Fasten to DNT2Mi with the screw included Mounting bar 1 Slide angled end of the mounting bar towards the rear panel Wall-mounting bracket Lift DNT2Mi on the bracket 6 5 Fasten the bracket into wall with screws 4 Drill holes ( 45 mm, ø 6 mm drill bit) into the wall 3 Mark fixing points on the wall using the bracket as schema Figure 13. Installation of DNT2Mi on a wall To install DNT2Mi on a wall: 1.
Installing DNT2Mi 2. Fasten the mounting bar into the opening in the bottom of DNT2Mi with the screw included. Use a Phillips screwdriver. 3. Mark fixing points on the wall for two screws using the wall-mounting bracket as schema (Figure 14). - Position the bracket on the wall in horizontal position, its hooks facing upwards. Use a spirit level to check that the bracket is in a straight position. 100 mm Figure 14. 4.
Data Network Terminal Single-port and Multiport Operating Instructions 5. Fasten the wall-mounting bracket on the wall. • 6. Lift DNT2Mi on the wall. • 5.7.2 Position the bracket on the wall and fasten it by screwing the included wall screws into the drilling holes. Slide the fixing holes of the mounting bar into the hooks of the wallmounting bracket and lay the lower end of DNT2Mi down against the wall. Uninstalling a wall-mounted DNT2Mi To uninstall a wall-mounted DNT2Mi: 1.
Installing DNT2Mi To install a modem shelf into a 19-inch rack: 1. Insert the modem shelf into the 19-inch rack. • Align the fixing holes of the modem shelf with the fixing holes in the rack. 2. Put the rack mounting nuts (8 pcs) to the rack and fix the modem shelf to the rack with eight screws. 3. Tighten the screws with a 5 mm Allen key. Rack screws (M6x16, Allen-head) Figure 17. 5.7.
Data Network Terminal Single-port and Multiport Operating Instructions To install DNT2Mi in a modem shelf: 1. Insert DNT2Mi into a free slot in the shelf. • 2. Push until the unit locks into the stopper at the end of the slot rail. Fasten the locking bar with the thumb screws included to lock DNT2Mi into the shelf. • Position the locking bar its openings facing upwards and flat side against the upper edge of the shelf.
Installing DNT2Mi 5.7.5 Uninstalling DNT2Mi from a modem shelf To uninstall DNT2Mi from a modem shelf: 1. Switch off the power. 2. Disconnect the cabling. 3. Loosen the thumb screws of the locking bar. Do not remove the screws completely. 4. Remove the locking bar by pushing it to left and stringing it out through the slots. 5. Draw DNT2Mi out of the modem shelf. 4 Remove locking bar 3 Loosen thumb screws 1 Switch power off 2 Disconnect cabling 5 Draw DNT2Mi out Figure 19.
Data Network Terminal Single-port and Multiport Operating Instructions 5.8 Connecting power supply This section specifies the requirements for the mains power supply of the site. WARNING MAINS VOLTAGE! Follow the national legislation when working with the power supply. DNT2Mi must be permanently wired to a disconnect device (for example circuit breaker) in accordance with the current local and national wiring standards.
Installing DNT2Mi Earthing bar Fuse 2 A max. 10 A 1.0 mm2 + - + - + bar E -48V system Figure 20. 1.0 mm2 Principle of a negative-grounded DC power system Earthing bar Fuse 2 A max. 10 A 1.0 mm2 + - - bar +48V system Figure 21. DN01145897 Issue 2-0 en + E 1.
Data Network Terminal Single-port and Multiport Operating Instructions Earthing bar 2 1.0 mm Line Figure 22. Power cable Grounding principle of the remote-powered system Note If the remote power feed is connected in a wrong way, that is, if the pairs are cross-connected at the DNT end, the receiving remote unit still functions properly. However, in this situation data transfer is not possible. See Figure 23.
Installing DNT2Mi 5.8.1 Troubleshooting Remote-powered DNT2Mi If there is a backlight but no menu on the display of DNT2Mi, the line is too long, or there is a line break on one of the pairs. If the initial displays are shown, but the unit resets after a while, the situation may be due to the fact that the line is too long. If there is no backlight to be seen, the line is too long, or the power supply is broken.
Data Network Terminal Single-port and Multiport Operating Instructions 5.9 Completing the installation 5.9.1 Verifying the installation To verify that you have installed DNT2Mi correctly: 1. Switch the power to DNT2Mi with the power switch on the rear panel. 2. Check that the green LED (PWR) lights up on the front panel. Caution Do not cover DNT2Mi. The air inlets and outlets must be unobstructed to maintain proper circulation of air. 5.9.
Commissioning DNT2Mi 6 Commissioning DNT2Mi This chapter describes the most common items that need to be checked before DNT2Mi is taken into use. DNT2Mi is ready to operate after the power supply (AC, DC, or remote power) and port and line cables are connected. However, identifications and settings should be checked and, if required, statistics and error counter should be reset.
Data Network Terminal Single-port and Multiport Operating Instructions After the automatic power-up test, the display indicates possible errors found during the test. More detailed information on the fault can then be found in the Self test menu. The test ends automatically if no fatal errors were found. 6.2 Management DNT2Mi can be managed through the line connection, local management, or port connection.
Commissioning DNT2Mi 6.3 Timing source Before connecting DNT2Mi to a network, you need to know how the network is timed. DNT2Mi can receive timing information through the line and port interfaces. DNT2Mi can also be used as a network timing source using the unit’s internal timing circuits. More information can be found in Sections 9.3.3 and 9.3.5. 6.
Data Network Terminal Single-port and Multiport Operating Instructions Port settings (Q1: 6,4, port#,3) Different adapters include different configurable parameters. Check that port settings are compatible with the equipment they are connected to. Note There are some adapter settings that are done by changing the jumper settings on the actual adapter. For more information, refer to document DTE Interface Units for Nokia Data Network Terminals Operating Instructions.
Commissioning DNT2Mi 6.8 Measurements After all the settings have been checked, we recommend that you carry out a line quality and a BER test. Note Before starting the BER test, reset all statistics and error counters. Read statistics and error counters after the BER test. Noise margins, Rx and Tx line levels, and attenuations (Q1: 7,1...3) Establish a link between two units. After the line is up, check the noise margin, Rx level, and line attenuation from the Measurements menu.
Data Network Terminal Single-port and Multiport Operating Instructions Table 3. Monitoring a line (Continued) Line voltage: xx V Alternatives: 55 to 155 V + no remote power Signal quality Signal quality monitored during 1 period of 15 minutes to max. 4 (with front panel menus) or 100 (with Q1 menus) successive periods of 15 minutes. Last 15 min Front panel menus give you absolute values and Q1 menus both absolute and relative values.
Commissioning DNT2Mi Table 5. Global parameters (Continued) Use of front panel keys In use Q1 rate *) 4800 bit/s *) = Recalling the default values does not change the values set for the Q1 management parameters. The original values for these parameters can be recalled by recalling the factory settings, refer to Section 6.10. Table 6. Line parameters Line interface STU-R rate adaptive, 2-wire Power backoff ON Bit error alarm limit 10-6 Table 7.
Data Network Terminal Single-port and Multiport Operating Instructions Table 9. Port parameters, X.21 Port rate n x 64k (n=1) Use of V.110 rate adaptation in port 2 or 3 Not in use In port 2 or 3 9600 kbit/s, Synchronous Remote loop detection Allowed Externally caused alarms Disabled (not to be seen through Q1). However, even if these alarms are disabled, they cause front panel alarms.
Commissioning DNT2Mi Table 11. 6.10 Port parameters, G.704/2M (Continued) G.704 TS map Equal to line Unused time slots Filled with FF National bits Sa4 to Sa8 1 BER alarm limit 1E-3 BER alarm severity B-level Factory values Recalling the default values does not affect the following settings that are considered as factory settings. When the factory settings are recalled, the values in this section and in Section 6.9 become effective.
Data Network Terminal Single-port and Multiport Operating Instructions 48 (128) © Nokia Corporation Nokia Proprietary and Confidential DN01145897 Issue 2-0 en
Maintaining DNT2Mi 7 Maintaining DNT2Mi This chapter describes what general information and statistics you can get on the equipment to be monitored. It also deals with possible alarms and faults. You can access all this information using front panel or Q1 menus. The menus are described in detail in Chapters 8 and 9. 7.
Data Network Terminal Single-port and Multiport Operating Instructions 7.2 Monitoring alarms The Fault display (see Figure 27) gives error information concerning the unit chosen. The information includes the name, which the user has given to the supervised device, supervision block, that is, the type of the device to be monitored, the type of a fault, and the fault status shown by the alarm class (A = urgent, B = non-urgent, AS = urgent, service alarm). *DNT2Mi (AS) Line: -no incoming signal Figure 27.
Maintaining DNT2Mi Table 13. Alarm Q1 message source Alarms Front panel message Port n BER > 1E-6 (1E-3) Loss of incoming signal No incoming signal Blocked from use Test mode 7.
Data Network Terminal Single-port and Multiport Operating Instructions The following tests are available for testing a DNT2Mi terminal: Table 14. Tests available for DNT2Mi Front Q1 Automatic panel management control Note Equipment tests Power up test After power is switched on Self test Equipment self test Self test (5,4) Line DL test Loop to line (DL) Port LL test Loop to DTE (LL) (5,2,#,3) Line interface test Network test loop ITU-T X.
Maintaining DNT2Mi Table 14. PRBS tests ITU-T V.52 29-1 test pattern Tests available for DNT2Mi (Continued) Front Q1 Automatic panel management control Port TR test Tx-Rx test (TR) (5,2,#,4) Note See Figure “PRBS (291) test (transmitter / receiver)” after this table. Transmitter and receiver towards the line. Port RL test Remotely controlled network test loop ITU-T X.150 loop 2 at remote end V.xx Circuit 140 or X.21 loop 2 command Data coming from the line is looped back to the line.
Data Network Terminal Single-port and Multiport Operating Instructions REMOTE DNT LOCAL DNT PORT 1 DTE PORT 2 DTE DTE DTE Figure 29. DTE PORT 3 DTE PORT 2 PORT 3 Local test loop in a port REMOTE DNT LOCAL DNT PORT 1 PORT 2 PORT 3 DTE DTE DTE Figure 30. PORT 2 DTE DTE DTE PORT 3 Network test loop (single-port) REMOTE DNT LOCAL DNT PORT 1 PORT 2 DTE DTE DTE Figure 31.
Maintaining DNT2Mi REMOTE DNT LOCAL DNT DTE PORT 2 PORT 1 DTE DTE DTE Figure 32. PORT 3 PORT 2 DTE DTE PORT 3 Remotely controlled network test loop REMOTE DNT LOCAL DNT DTE PORT 2 Tx Rx DTE PORT 2 DTE 7.4 DTE PORT 3 DTE Figure 33.
Data Network Terminal Single-port and Multiport Operating Instructions • Line attenuation • Line voltage (remote-powered) Attenuation can be 0 to 41 dB. DNT statistics via the front panel or Q1 Signal qualities of the selected 15-minute periods (4 periods with front panel menus and 100 with Q1) and 24-hour periods (4 periods with front panel menus and 30 with Q1) and since the last reset, according to Rec. G.826, are indicated by the quality parameters in Table 15. Table 15.
Using front panel menus 8 Using front panel menus This chapter describes the front panel menus and how to navigate between them using the front panel keys.
Data Network Terminal Single-port and Multiport Operating Instructions Multiport DNT2Mi OK STATUS P1 PWR TEST P2 EXIT P3 DNT2Mi DTR DSR DCD RTS CTS Single-port DNT2Mi OK EXIT STATUS PORT PWR TEST DNT2Mi DTR DSR DCD RTS CTS LED INDICATORS LED Colour Function PWR STATUS Green Red (blinking) Red Green Power on Alarm TEST P1, P2, P3 The states of these signals are shown in the Port display of the Monitoring menu.
Using front panel menus OK EXIT STATUS P3 P1 TEST PWR P2 DTR DSR DCD RTS CTS L1: 1024 L2: 1024 STU-R: OK The OK key takes you one level down in the menu. It also selects or activates a desired test, monitoring, or configuration alternative. The EXIT key takes you one step up in the menu without activating or storing anything. The arrow keys < > are used for scrolling the alternatives on a menu level. Display Shows the status information, test results, configuration options, and monitoring information.
Data Network Terminal Single-port and Multiport Operating Instructions 8.
Using front panel menus The modem automatically detects the port adapter type in use and shows the corresponding configuration parameters under the Configure: Port menu option. Note The text Save? (OK/Exit) appears in the display only when changes have been made to the edit buffer. If the OK key is pressed, the changes are stored and activated. Pressing the EXIT key ends the configuration procedure and nothing is changed.
Data Network Terminal Single-port and Multiport Operating Instructions 8.2.
Using front panel menus Configure Port 3 Configure Port 2 OK EX OK Save? OK/Exit OK EX V.110 Not in use * Port mode Synchronous * OK EX OK EX V.110 Not in use * V.110 1200 bits/s V.110 2400 bits/s Port mode Synchronous * Port mode Async. 8 bits Port mode Async. 11 bits V.110 56 kbits/s Only if V.28 adapter and V.
Data Network Terminal Single-port and Multiport Operating Instructions Configure Port 1 OK Configure Port 3 Configure Port 2 EX OK Save? OK/Exit Accept OK EX V.110 Not in use OK * EX V.110 Not in use * V.110 1200 bits/s V.110 2400 bits/s Dismiss OK Circuit C Ignored * Circuit I Normal * EX OK EX DTE alarms Disabled * OK Remote loop Allowed * OK RL from DTE Not allowed * OK EX EX EX Circuit C Ignored * Circuit C Simul. Carrier Circuit I Normal * Circuit I Simul.
Using front panel menus Configure Port 1 OK Configure Port 2 Configure Port 3 EX OK Save? OK/Exit OK Accept EX Interface mode Codir. * OK EX Interface mode Codir. * Interface mode Contradir. Dismiss AIS mode Octet tim disab * OK DTE alarms Disabled OK * Remote loop Allowed * Figure 40. EX EX OK EX AIS mode Octet tim enab DTE alarms Disabled * DTE alarms Enabled Remote loop Allowed * Remote loop Not allowed Configuring ports / G.
Data Network Terminal Single-port and Multiport Operating Instructions Configure Port 1 OK Configure Port 2 Configure Port 3 EX Save? OK/Exit OK Only with D2048 adapter Accept EX Framing format Basic frame * OK Framing format Basic frame * OK EX Framing format CRC multiframe Framing format BF monitoring Framing format CRC monitoring Dismiss Framing format No frame TS map Equal to line * OK TS map Special TS= -- * OK Idle Channels Code FF * OK EX EX EX TS map Equal to line * TS map
Using front panel menus Configure Port 1 OK Configure Port 2 Configure Port 3 Ports 2 and 3 in multiport version only EX OK Save? OK/Exit 1) EX Input level -22.0 dBm (2-w) OK * EX DTE if alarms Disabled * OK Remote loop Allowed * OK EX EX Input level -22.0 dBm (2-w) * Input level -7.0 dBm (2-w) DTE if alarms Disabled * DTE if alarms Enabled Remote loop Allowed * Remote loop Not alowed Figure 43. DN01145897 Issue 2-0 en ... 1) Scale (0.5 dBm resolution): -22.0 dBm to -7.
Data Network Terminal Single-port and Multiport Operating Instructions 8.2.2 Configuring a line Configure Line OK psdS = PSD mask, Symmetric 32 = Line rate, the value of n x 64k For more information, refer to Section 9.3.
Using front panel menus 8.2.3 Configuring common settings Configure Common OK EX OK Save? OK/Exit EX Timing source OK Line * EX Time slots 0-15 . . . . . . . . . . . . . . . .OK Timing source Internal Timing source Line * Timing source Port 1 Give 1st TS: n=0 OK Give last TS: n=0 Give 1st TS: n=1 OK Give last TS: n=1 Add time slot to Port 3 OK Give last TS: n=2 Remove time slot OK Time slots 16-31 OK ................ Timing source Transparent Add time slot to Port 1 ...
Data Network Terminal Single-port and Multiport Operating Instructions 8.2.4 Default settings Configure Default settings OK EX OK Save? OK/Exit EX Common defaults Line Common defaults Port 1 Common defaults Port 2 Common defaults Port 3 Common defaults All Common defaults Factory Figure 46.
Using front panel menus 8.3 Testing DNT2Mi 8.3.1 Testing a port Test Port 1 Test Port 3 Test Port 2 OK EX Port # LL test OK Port # TR test 1) OK Port # DL test OK Port # RL test 1) OK Port # RLTR test 1) OK EX EX EX EX EX Port # LL test or ON Port #: TR test Error count:0000 Port # DL test Port # Test not allowed 1) The test is not possible with the D2048 adapter ON Port # RL test ... Port # RL test Port # RLTR test ...
Data Network Terminal Single-port and Multiport Operating Instructions 8.3.3 Testing the equipment Test Equipment OK Equipment Self test Figure 49. 72 (128) EX OK EX Equipment Self test ...
Using front panel menus 8.4 Monitoring DNT2Mi 8.4.1 Monitoring a port Monitor Port 1 OK Monitor Port 2 Monitor Port 3 EX Port 1 00 00 00 00 00 00 Only with V.xx or X.21 or EIA or ET adapters Port 1 slips Tx 0000 Rx 0000 P1 signal qual. 15 min periods P1 signal qual. 24 h periods OK EX OK EX Start time 0 d:xx h:xx m:xx Start time 0 d:xx h:xx m:xx Rx UAT: 0000 Tx UAT: 0000 Rx ES: 0000 Tx ES: 0000 Rx SES: 0000 Tx SES: 0000 Rx BBE: 0000 Start time 1 d:xx h:xx m:xx ...
Data Network Terminal Single-port and Multiport Operating Instructions 8.4.2 Monitoring a line Monitor Line OK EX Monitor line Measurements OK EX Tx level L1: xx Rx level L1: xx [dBm] L2: xx [dBm] L2: xx Attenuation L1: xx [dB] L2: xx Noise margin [dB] L1: xx L2: xx Line voltage xxx Monitor line Statistics OK EX Signal qual.
Using front panel menus 8.4.3 Monitoring alarms Monitor Alarms OK EX Line No line signal Port # No incoming sig. Equipment Hardware error Line No frame sync Port # Framing lost Equipment Sync clock fault Line BER > 1E-6 Port # CRC MFA lost Alarms No alarms Line BER > 1E-3 Port # AIS Line STU-R pwr OFF Port # BER > 1E-6 Port # BER > 1E-3 Port # CT140 Port # CT141 Port # Remote test Port # No adapter Port # V.110 frame lost Port # Far-end alarm Port # Blocked from use Figure 52.
Data Network Terminal Single-port and Multiport Operating Instructions 8.4.4 Monitoring equipment information Monitor Info OK EX Info DNT2Mi T65680 SW: S65672.01 A0 Basic HW: E65671.01 A0 Mux HW: E65633.01 A0 Port 2: D2048 E62628.01 A0 Port 3: Empty v.28 v.11 v.35 x.21 G.703/2M G.704/2M G.703/64K EIA-530-A D2048 ET VF Figure 53. 8.4.5 Port 1: V.11 DS62604 DS62602 DS62603 DS62604 DS62605 DS62607 DS62608 DS62609 DS62610 E62628 E66210 (displayed as V.
Using Q1 menus 9 Using Q1 menus 9.1 General The Q1 main menu level contains the following 11 menus, of which those available in DNT2Mi are typed in boldface in the list below: 1. Fault display 2. Local alarm cancel 3. Reset local cancel 4. Identifications 5. Controls (temporary) 6. Settings (permanent) 7. Measurements 8. Statistics 9. Testing 10. User privileges 11. Miscellaneous The options of the DNT2Mi menus are described in more detail in the following subsections.
Data Network Terminal Single-port and Multiport Operating Instructions 1 4 5 1 Fault display 2 Local alarm cancel *) 3 Reset local cancel *) 4 Identifications 5 Controls 6 Settings 7 Measurements 8 Statistics 9 Testing *) 10 User privileges 11 Miscellaneous *) 6 7 *) not implemented 8 10 Figure 55.
Using Q1 menus 4 DNT Identifications: 0 Display 1 Eq type 2 Eq name 5 HW units 6 SW versions 7 Modify 4,0 Identifications Equipment name: DNT2Mi Equipment type: DNT2Mi mp (T65680) HW: Main E65671.01 A Mux E65633.01 A SW: S65672.01 A0 Port 1: V.11 (DS62603) Port 2: No adapter Port 3: G.704/2M (DS62608) Installation Date: First:2003-03-16 Last:2003-03-27 Installed by:K.Reijonen Serial number: 4H0122334455H 4,1 DNT2Mi mp 4,2 DNT2Mi 4,5 HW units: Main E65671.01 A Mux E65633.01 A 4,6 SW version: S65672.
Data Network Terminal Single-port and Multiport Operating Instructions 4,7,4 Intallation info: 0 Display 1 Modify 4,7,4,0 Installation info: Date: First:2003-03-22 Last:2003-03-29 Installed by:K.Reijonen 4,7,4,1 1 Date 2 Installed by 4,7,4,1,1 Give new Installation date: yyyy-mm-dd 4,7,4,1,2 Give new Installer: Max20 characters Figure 57.
Using Q1 menus 5 DNT controls: 0 Display 1 All test loops off 2 Port test loops 3 Line test loops 4 Self test 5,2 Port test loops: Give port number 1,2 or 3 5,2, port # Port port# test loops: 0 Display 1 Port test loops off 2 Loop to line (DL) 3 Loop to DTE (LL) 4 Tx-Rx test (TR) 5,3 Line test loops: 0 Display 1 Line test loops off 2 Loop to Line (DL) 5,4 Self test: 0 Result of last ST 1 Start Self Test Figure 58.
Data Network Terminal Single-port and Multiport Operating Instructions 6 DNT settings: 0 Display 1 Service options 2 Timing source 3 Line settings 4 Port settings 5 Timeslot use 6 Default settings 7 Load factory settings 6,1 Service options: 1 Q1 Speed 2 Q1 Address 3 Q1 Management path 4 Test time out limit 6,1,1 Q1 speed: 0 Display Set speed 600 ...9600 6,1,2 Q1 address: 0 Display 1 Modify 6,2 6,3 6,4 6,5 6,6 6,7 Give new address: 0 to 4094 6,1,3 6,1,4 Figure 59.
Using Q1 menus 6,1,3 Q1 Management path: 0 Display 1 Q1 via Line 2 LM interface 6,1,3,1 Q1 via Line: 0 Display 1 On 2 Off 6,1,3,2 LM Interface: 0 Display 1 On 2 Off 3 Interface type 6,1,3,2,3 Interface type: 0 Display 1 V.11 2 V.28 6,1,4 Test time out limit: 0 Display 1 to 64999 min 65000 no limit 6,2 Timing source: 0 Display 1 Internal 2 Line 3 Port1 4 Transparent 6,3 6,4 6,5 6,6 6,7 Figure 60.
Data Network Terminal Single-port and Multiport Operating Instructions 6,3 Line settings: 0 Display 3 Line interface 6 Power backoff 8 BER alarm limit 9 BER alarm severity psdS = Power special density mask, Symmetric 32 = Line rate, the value of n x 64k For more information, refer to Section 9.3.4 "Line settings" 6,3,3 Line interface SHDSL mode: 1 STU-C (fixed) 2 STU-R (rate adaptive) 6,3,3,1 Line if: STU-C 2/4-wire mode: 2 Two-wire 4 Four-wire 6,3,3,1,2 Line if: STU-C, 2w, PSDS Give line rate n = 3 ..
Using Q1 menus 6,3,6 Power backoff: 0 Display 1 ON 2 OFF 6,3,8 BER alarm limit: 0 Display 1 E-3 2 E-6 6,4 6,5 6,6 6,7 Figure 62.
Data Network Terminal Single-port and Multiport Operating Instructions 6,4 Port settings: Give port number: 1,2 or 3. 6,4,port# 6,5 Timeslot use: 0 Display 1 Modify 6,5,1 Give TS(s): (e.g 0-8.16-20) 6,5,1,TS# Modify TS: 1 Add to port1 2 Add to paort2 3 Add to port3 4 Remove 6,6 Default settings: 1 Port1 2 Port2 3 Port3 4 Line 9 All 6,6,1...9 Default settings: Are you sure? 1 Cancel 99 Yes 6,7 Load factory settings: Are you sure? 1 Cancel 99 Yes Figure 63.
Using Q1 menus 6,4, port # Port settings: 0 Display 2 RL control 3 DTE if parameters 4 V.110 rates 5 DTE if alarms 6 Connection name 6,4, port#,2 RL control: 0 Display 1 Allowed 2 Not allowed 6,4, port#,4 V.
Data Network Terminal Single-port and Multiport Operating Instructions G.704/2M & D2048 Interface settings: 6,4, port #, 3 G.
Using Q1 menus V-type inteface settings: 6,4,port#,3 1) Only in ports 2 and 3 and if V.28 adapter and V.
Data Network Terminal Single-port and Multiport Operating Instructions X.21 interface settings: 6,4,port#,3 X.
Using Q1 menus G.703/64k Interface settings: 6,4, port #, 3 G.703/64k DTE: 0 Display 1 AIS mode 2 Interface mode 6,4,port #,3,1 AIS mode: 0 Display 1 Octet timing enabled 2 Octet timing disabled 6,4,port #,3,2 Interface mode: 0 Display 1 Codirectional 2 Contradirectional G.703/2M Interface settings: 6,4, port #, 3 G703/2M DTE: No parameters Figure 68. DN01145897 Issue 2-0 en Settings menu structure (continued), G.703/64k & G.
Data Network Terminal Single-port and Multiport Operating Instructions 7 DNT measurements: 0 Display all 1 Noise margins 2 Rx levels 3 Tx levels 4 Attenuations 5 Line voltage NM = Noise margin At = Attenuation 7,0 Pair NM At Tx dB dB dBm # xx xx xx 1 xx xx xx 2 Line voltage xxV Rx dBm xx xx 7,1 Noise margins Pair 1 xxdB Pair 2 xxdB 7,2 Rx levels Pair 1 xxdBm Pair 2 xxdBm 7,3 Tx levels Pair 1 xxdBm Pair 2 xxdBm 7,4 Attenuation Pair 1 xxdB Pair 2 xxdB 7,5 Line voltage xxV Figure 69.
Using Q1 menus 8 DNT statistics: 1 Port statistics 2 Line statistics 3 System counters 99 Reset all statistics 8,1 Port statistics: Give port number: 1, 2 or 3 * 8,1,port# Port statistics: 1 Interface status 2 Timing slip 3 Relative values 4 Absolute values 5 Reset statistics * This menu is not displayed in the single-port version 8,1,port#,2 Timing slip: 0 Display 1 Reset counters 8,1,port#,3 Port stat relative: 1 15 min periods 2 24h periods 1) You can choose up to 100 15 min periods or up to 30 24h
Data Network Terminal Single-port and Multiport Operating Instructions 1) You can choose up to 100 15 min periods or up to 30 24h periods 8,2 Line statistics: 1 Line status 3 Relative values 4 Absolute values 5 Reset statistics 8,2,3 Line stat relative: 1 15 min periods 2 24h periods 8,2,3,1/8,2,3,2 Give period 0 to 100 1) (0=current, 1=last, 2=prev.
Using Q1 menus 10 DNT privileges: 1 Password 4 Setting parameters 5 Front panel rights 10,1 Give password 1...7 characters 10,4 Setting parameters: 1 Password timeout 2 Protections 3 Password 10,4,1 Password timeout: 0 Display 1 to 1000 min 10,4,2 Protections: 0 Display 1 No protection 2 Password required 10,4,3 Give new password: 1...
Data Network Terminal Single-port and Multiport Operating Instructions 9.2 DNT controls (5) The DNT controls menu (see Figure 58) contains all possible tests to be activated in DNT2Mi via the Q1 management. It also shows if DNT2Mi in question is being tested. See the example below. Display controls: type Port1: -Port2: -Port3: -Line: G.704 control ----- The DNT Controls menu also has a Self Test submenu, which shows the result of the last self test and enables the activation of a self test.
Using Q1 menus DNT settings: Q1 speed: 4800 Q1 address: 2 Q1 via line: Off LM interface: On Test timeout limit: 10 Timing source: Line Line interface: STU-R rate adaptive 2-wire PSD symmetric Line rate n=32 (2048k) Power backoff: On BER alarm limit: 1E-3 BER alarm severity: B-level Port 1 (V.
Data Network Terminal Single-port and Multiport Operating Instructions Q1 address (6,1,2) The Q1 address must be selected before DNT2Mi can be accessed using management. The address can range from 0000 to 4095. The last address (4095) is a universal address that cannot be selected by the Q1 manager. Q1 management path (6,1,3) A Q1 management source is selected from this menu. The source can either be: 9.3.3 • Q1 via line, EOC • Local management interface • Q1 via Port1 (only with G.704 adapter).
Using Q1 menus Internal timing DTE DNT2Mi DTE adapter 113 114 115 Line SHDSL Timing Timing Port timing DTE DNT2Mi 113 Line SHDSL DTE adapter 114 115 Timing Line timing DNT2Mi 114 115 DTE adapter DTE Line SHDSL 113 Timing Transparent timing Timing DTE DNT2Mi DNT2Mi DTE adapter 114 115 DTE adapter 113 DTE 114 115 113 Timing Figure 73.
Data Network Terminal Single-port and Multiport Operating Instructions 9.3.4 Line settings (6,3) This menu branch allows you to perform settings to a line. Line interface (6,3,3) In this menu, you can select the following line settings: • SHDSL mode • 2-wire or 4-wire mode • Line rate. Line interface SHDSL mode STU-C Fixed 2-wire 4-wire Line Rate n=3...32 Line Rate n=6...32 Figure 74.
Using Q1 menus • STU-C (6,3,3,1) This option defines the unit as a SHDSL Termination Unit (STU) Central office. It also sets the bit rate in the line as Fixed. STU-C determines line rate to the value given with the menu command Give line rate (6,3,3,1,2,1). • STU-R (6,3,3,2) This option defines the unit as a SHDSL Termination Unit (STU) Remote. It also sets the bit rate in the line as Rate adaptive. If the line conditions (attenuation/noise) allow, STU-R adapts to the line rate set on the STU-C side.
Data Network Terminal Single-port and Multiport Operating Instructions 102 (128) Figure 75. Measured SHDSL symmetric PSD and mask; 2-w, 2M Figure 76.
Using Q1 menus • Give line rate (6,3,3,1,2,n; 6,3,3,1,4,n) This setting defines the maximum achievable bit rate in the line only if the STU-C option is taken into use. In the 4-wire mode, only even numbers for n are allowed (n = 6, 8, 10...32). Power backoff (6,3,6) • ON (6,3,6,1) Select this option to enable transmit power reduction on short loops. The transmit power is reduced as a function of the line power loss shown in Table 16. Table 16.
Data Network Terminal Single-port and Multiport Operating Instructions DNT2Mi reach 0.4mm cable, no noise, BER < 1E-7 m 9000 8000 7000 6000 5000 4000 3000 2000 0 192 256 320 384 448 512 576 640 704 768 832 896 960 1024 1088 1152 1216 1280 1344 1408 1472 1536 1600 1664 1728 1792 1856 1920 1984 2048 1000 kbit/s 2-w, no noise 4-w, no noise Figure 77.
Using Q1 menus • Cable impulse noise level Impulse noise in a cable can be caused, for example, by a telephone's pulse dialling signals and exchanges based on relay technique. • Cable distortion DNT2Mi has an effective adapter equalizer, which corrects the distortion caused by the cable. However, if the connection is extremely long, the extent of the distortion may also restrict the length. • Remote power feeding If a 110 V remote power is used, the maximum line length may be limited.
Data Network Terminal Single-port and Multiport Operating Instructions This setting can allow the port to react to a RL request (ITU-T V.54) incoming from the line or prevent this to happen. If the RL control is allowed, a digital loop (loop to line) is established in the port if a request has been detected from the incoming data. V-type interface settings (6,4, port #,3) • Synchronous or asynchronous (6,4, port #,3,1) The asynchronous or synchronous conversion according to ITU-T V.14.
Using Q1 menus CT103 timing by CT113, Line timing DNT2Mi DTE 103 Tx V.xx 113 PLL PLL Line SHDSL 114 104 PLL 115 Rx Timing CT103 timing by CT114, Line timing DNT2Mi DTE 103 114 Tx V.xx PLL Line SHDSL 104 115 PLL Rx Timing Figure 78.
Data Network Terminal Single-port and Multiport Operating Instructions CT103 timing by CT113, Internal timing DNT2Mi DTE 103 113 Tx V.xx PLL PLL Line SHDSL 114 104 PLL 115 Rx Timing Timing CT103 timing by CT114, Internal timing DNT2Mi DTE 103 Tx V.xx 114 PLL Line SHDSL 104 PLL 115 Timing Figure 79.
Using Q1 menus - - - - - CTS use (6,4, port #,3,3,1) The suboptions of the menu allow you to: • display the current use of the circuits • set the CTS (106) circuit ON • make the CTS circuit follow the RTS (105) circuit with a 8bit delay in transition from the OFF state to the ON state • make the CTS circuit follow the RTS circuit with a 255-bit delay in transition from the OFF state to the ON state • set the RTS circuit to control the DCD (109) circuit at the remote end (Simulated carrier).
Data Network Terminal Single-port and Multiport Operating Instructions - BF monitoring (only with the D2048-type adapters) CRC monitoring (only with the D2048-type adapters). Note The collection of statistics data is not possible in the ’No frame’ mode. • TS mapping (6,4, port #,3,4) The placement of time slots to a G.704 frame can be set via this menu. There are two placement alternatives: either in the same way as in the line side or starting from a user given time slot, see the example in Figure 80.
Using Q1 menus • BER alarm limit (6,4, port #,3,7) The bit error rate (BER) alarm limit of the G.704/2M port can be checked and changed using this menu. The BER alarm limit can be either 10-3 (E3) or 10-6(E-6). Alarms can only appear if the frame format is either one of the CRC-4 alternatives. • BER alarm severity (6,4, port #,3,8) This menu allows you to view and change the value set to the BER alarm severity. Alarms can only appear if the frame format is either one of the CRC-4 alternatives. X.
Data Network Terminal Single-port and Multiport Operating Instructions 9.3.6 Time slot use (6,5) The mapping of time slots can be viewed and configured via this menu (see Figure 63). The format of the display showing the current use of the time slots is as follows: • Time slots can be freely selected between the ports. • Time slots can be reserved only if they are not in use. Otherwise, they must be first removed from the time slot map.
Using Q1 menus 9.4 Statistics (8) This menu provides information on port, line, and system statistics. Port statistics (8,1) The Port statistics submenu (see Figure 70) allows you first to choose the number of the port. Line statistics (8,2 and 8,3) The Line statistics submenu (see Fig. 70) allows you to monitor the signal quality. In the Port/Line statistics submenu: • You must first select whether you want to monitor port or line statistics. Then select absolute or relative values.
Data Network Terminal Single-port and Multiport Operating Instructions Since last reset: TT: 0 d 0 h 26 min 1 s UAT (Rx): xx ES (Rx): xx xx SES (Rx): xx BBE (Rx): xx UAT (Tx): xx ES (Tx): xx SES (Tx): • 9.5 You can clear all statistic parameters. User privileges (10) This menu allows you to give a new password (see Figure 72). The length of the password can be 1 to 7 characters. The default password is: DNT2Mi. The menu allows also to restrict user rights by changing the settings of the parameters.
Technical specifications 10 Technical specifications 10.1 Dimensions Table 17. Width 293.5 mm Height 91.4 mm Depth 236.8 mm Weight 2.6 kg Table 18. DN01145897 Issue 2-0 en DNT2Mi multiport dimensions DNT2Mi single-port dimensions Width 293.5 mm Height 55 mm Depth 236.8 mm Weight 2.
Data Network Terminal Single-port and Multiport Operating Instructions 10.2 Power supply Table 19. DNT2Mi power supply Power consumption, depending on adapters and power supply used (AC, DC, RP) DNT2Mi multiport DNT2Mi single-port 5 – 15.5 W • 5 W, when one G.703/2M adapter, remote power supply and 2-wire line used • 12 W, when three V.35 adapters, AC power supply and 2-wire line used • 15.5 W, when three ET adapters, AC power supply and 4-wire line used 4.4 – 10.5 W • 4.4 W, when G.
Technical specifications 10.3 Line interfaces Table 20. Line interface 192 kbit/s to 2048 kbit/s (in accordance with ITU-T G.991.2 Recommendation) Line code 16-TCPAM Line rate 2-w (payload) 192 to 2048 kbit/s Line rate 4-w (payload) 384 to 2048 kbit/s DTE interfaces Supported interchangeable DTE interface types: 10.4 • V.11 • V.28 • V.35 • X.21 • G.703/64k • D2048 • ET interface • G.703/2M • G.
Data Network Terminal Single-port and Multiport Operating Instructions Figure 81. Example of DNT2Mi identification sticker 10.5 Ambient conditions 10.5.1 Environmental and mechanical requirements The climatic and mechanical requirements of DNT2Mi comply with the following ETSI specifications: Table 21. Environmental and mechanical requirements Transportation ETSI ETS 300 019-2-2 class 2.3 Storage ETSI ETS 300 019-2-1 class 1.2 Operation ETSI ETS 300 019-2-3 class 3.
Technical specifications 1 2 Air temp. ˚C 60 Operating conditions Storage conditions 2 50 40 1 30 29 20 10 Absolute humidity g/m3 0 -10 -20 1 -30 0.5 -40 -50 0 10.5.2 10 20 30 40 50 60 70 80 90 100 Figure 82. DNT2Mi climatogram Table 22.
Data Network Terminal Single-port and Multiport Operating Instructions Table 23. EMC requirements EN 55022 class B (1994) EN 55024 (1998) EN 300386-2 (1998) Note The conditions listed in Section 5.1 must be fulfilled. 10.5.3 Safety and protection Concerning protection and safety, DNT2Mi follows the requirements and specifications listed below: Table 24.
Appendix A. A.1 Commissioning chart You can use this appendix to mark down results of the commissioning procedure (refer to Chapter 6). Note We recommend that you take a copy of the charts in the following pages; do not make any markings to the original document. Table 25. General settings Setting Setting Equipment ID Q1 speed Q1 address Q1 management path Line frame format Timing source Protections Password Test timeout Power feed Table 26.
Data Network Terminal Single-port and Multiport Operating Instructions Table 26. Port settings (Continued) Setting Port 1 Port 2 Port 3 RTS & CTS DCD DSR& DTR 140 / RL req 141 / LL req Circuit C Circuit I AIS mode Interface mode CRC-4 Unused TS fill TS 0 fill BER alarm limit BER alarm sev Table 27. BER test results Port 1 Port 2 Port 3 Table 28.
Table 29. Statistics CPU reset count Line Port 1 *) Port 2 *) Port 3 *) UAT rx SES rx ES rx BBE rx UAT tx ES tx SES tx *) only with G.
Data Network Terminal Single-port and Multiport Operating Instructions 124 (128) © Nokia Corporation Nokia Proprietary and Confidential DN01145897 Issue 2-0 en
Glossary Abbreviations 2M 2 Mbit/s AC Alternating Current AIS Alarm Indication Signal BBE Background Block Error BBER Background Block Error Ratio BER Bit Error Ratio BNC Bayonet-lock coaxial Connector CAS Cascade Switch CPU Central Processing Unit CRC Cyclic Redundancy Check CTS Clear To Send dB Decibel DC Direct Current DCD Line signal detector DCE Data Circuit-terminating Equipment DL Digital Loop DNT Data Network Terminal DSL Digital Subscriber Line DSR Data Set Read
Data Network Terminal Single-port and Multiport Operating Instructions ESR Errored Seconds Ratio ES Errored Second ESD Electrostatic Discharge ET Ethernet ETS European Telecommunication Standard ETSI European Telecommunication Standards Institute GND Ground IF Interface ISO International Organisation for Standardisation ITU-T International Telecommunication Union − Telecommunication Standardisation Sector (former CCITT) LAN Local Area Network LAN-IC Local Area Network Interconnection
PWR Power RL Remote Loop RLTR Remote Loop pseudo random bit sequence 29−1 test RTS Request To Send Rx Receiver RxC Receive Clock RxD Received Data SES Severely Errored Seconds SESR Severely Errored Seconds Ratio SG Signal Ground SHDSL Single-Pair High-bit-rate DSL SMB Snap-on subminiature coaxial cable sp/mp single-port/multiport STE Service Terminal Emulator TC-PAM Trellis Coded Pulse Amplitude Modulation TDM Time Division Multiplexing TMC Transmission Management Computer
Data Network Terminal Single-port and Multiport Operating Instructions Terms Data network termi- A piece of equipment which is used for data transmission over the subscriber nal loop, providing access to the trunk network. DYNANET Nokia’s family of primary rate equipment and their tributaries used in access networks.
