3Com NETBuilder SI User Manual

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Manual is about: Bridge/Router

Summary of NETBuilder SI

  • Page 1

    ® http://www.3com.Com/ installing the superstack ® ii netbuilder ® si bridge/router part no. 09-1421-001 published july 1998 hwbook page i friday, june 19, 1998 3:42 pm.

  • Page 2

    Ii 3com corporation 5400 bayfront plaza santa clara, california 95052-8145 copyright © 3com corporation, 1998. All rights reserved. No part of this documentation may be reproduced in any form or by any means or used to make any derivative work (such as translation, transformation, or adaptation) wit...

  • Page 3

    Iii marketed for use in an industrial or a commercial area. A system that meets the more stringent class b requirement can be marketed for use in a residential area in addition to an industrial or a commercial area. The end user is generally held responsible for ensuring that her system is suitable ...

  • Page 4

    Iv canadian certification notice the industry canada label identifies certified equipment. This certification means that the equipment meets certain telecommunications network protective, operational, and safety requirements. The department does not guarantee the equipment will operate to the users’...

  • Page 5

    V ce notice marking by the symbol indicates compliance of this equipment with the emc, telecom and low voltage directives of the european community. Such marking is indicative that this equipment meets or exceeds the following technical standards: en55022 — limits and methods of measurement of radio...

  • Page 6

    Vi hwbook page vi friday, june 19, 1998 3:42 pm.

  • Page 7: Ontents

    C ontents a bout t his g uide conventions 11 year 2000 compliance 12 1 u sing the s uper s tack ii b ridge /r outer in your n etwork ethernet lan ports 13 wan port 13 isdn port (model 43x, 53x, 44x and 54x) 13 56/64k csu/dsu port (model 45x and 55x) 14 t1/ft1 csu/dsu port (model 46x and 56x) 14 seri...

  • Page 8

    Connecting a pc, terminal, or modem 26 shutting down 26 3 f eatures and s pecifications features 27 back and front panels 28 normal led meanings 30 system leds 30 serial leds 30 wan leds 31 lan leds 31 dip switches 32 hardware interrupt switch 32 reset button 32 serial device requirements 33 physica...

  • Page 9: Isdn L

    X.21 dte cable pinouts 52 x.21 dce cable pinouts 53 rs-449 dte cable pinouts 54 rs-449 dce cable pinouts 55 rs-530 dte cable pinouts 56 5 i nstalling or r emoving an i nterface m odule removing the cover 59 removing an existing module (model 4xx) 61 installing a new module (model 4xx) 63 removing an...

  • Page 10

    I ndex 3c om c orporation l imited w arranty hwbook page 10 friday, june 19, 1998 3:42 pm.

  • Page 11: Bout

    A bout t his g uide this guide includes complete hardware installation and cabling information for the superstack ® ii netbuilder ® si bridge/routers. This guide is intended for the following audience: ■ inexperienced end users configuring their first internetworking device ■ experienced network adm...

  • Page 12

    12 c hapter : a bout t his g uide year 2000 compliance for information on year 2000 compliance and 3com products, visit the 3com year 2000 web page: http://www.3com.Com/products/yr2000.Html hwbook page 12 friday, june 19, 1998 3:42 pm.

  • Page 13: Sing

    1 u sing the s uper s tack ii b ridge /r outer in your n etwork this chapter provides an overview of the networking capability provided by the lan, wan, and serial ports on the superstack ii netbuilder si bridge/router. Ethernet lan ports the superstack ii netbuilder si bridge/router provides connec...

  • Page 14

    14 c hapter 1: u sing the s uper s tack ii b ridge /r outer in your n etwork order isdn lines from the phone company. See appendix a for more information about ordering isdn lines. Installations in hong kong should be configured to originate and receive isdn calls at 64 kbps. Due to the variety of i...

  • Page 15

    Telco services 15 telco services to create a wan, you must buy lines and services from a telecommunications company (telco). Services include dial-up lines, leased lines, and packet-switched services. Dial-up lines, like isdn, allow you to dial your destination only when you need to and hang up when...

  • Page 16

    16 c hapter 1: u sing the s uper s tack ii b ridge /r outer in your n etwork hwbook page 16 friday, june 19, 1998 3:42 pm.

  • Page 17: Nstalling

    2 i nstalling the h ardware this chapter describes how to install your superstack ii netbuilder si bridge/router. Required equipment table 4 lists the items you receive in the shipping carton and items you need to provide. Warning: to eliminate cable noise emission in excess of fcc regulations, part...

  • Page 18

    18 c hapter 2: i nstalling the h ardware for more information on cables, see chapter 3. Mounting the bridge/router you can mount your bridge/router on a tabletop, stack several with brackets, or mount the bridge/router in a rack. Mounting kit the mounting kit contains the following hardware: figure ...

  • Page 19

    Mounting the bridge/router 19 stacking with brackets see figure 2 to securely stack several bridge/routers on a tabletop. Figure 2 stacking bridge/routers installing in a rack to install the bridge/router in a rack, follow these steps: 1 secure the rack-mount brackets to each side of the chassis usi...

  • Page 20

    20 c hapter 2: i nstalling the h ardware 2 hold the chassis between the poles of the rack and attach the brackets to the rack using panhead screws (you must provide these screws). Tighten each screw securely. Caution: using fewer than two screws to secure the brackets to the rack may cause the bound...

  • Page 21

    Cabling the connectors 21 cabling the lan connectors you can cable one or two ethernet connectors using either 10base-t or 100base-tx cabling. If you have a boundary router, cable only the l1 connector. For more information about ethernet connectors and cables, see “lan connector and cables” on page...

  • Page 22

    22 c hapter 2: i nstalling the h ardware the isdn s/t port uses an rj-45 connector. In the u.S. And canada, purchase an nt1 from an isdn equipment vendor, and use it between the bridge/router and the isdn outlet. In other countries, you do not need to provide an nt1 because the function is provided ...

  • Page 23

    Cabling the connectors 23 model 45x and 54x 56/64k csu/dsu models 45x and 55x bridge/routers have a 56/64k csu/dsu connector. The 56/64k csu/dsu port uses an rj-48s connector. For more information on csu/dsu cables, see “56/64k csu/dsu cable” on page 44. Model 46x and 56x t1/ft1 models 46x and 56x b...

  • Page 24

    24 c hapter 2: i nstalling the h ardware cabling the serial connectors the superstack ii bridge/router has either two or four flex-wan serial connectors depending on the model. Order the appropriate flex-wan cable from 3com for your serial device. See “serial connectors and flex-wan cables” on page ...

  • Page 25

    Attaching a redundant power system 25 attaching a redundant power system you can attach your superstack ii bridge/router to a superstack ii redundant power system (rps). For full power supply redundancy, attach one end of the rps cable to the rear panel on the bridge/router and the other end to the ...

  • Page 26

    26 c hapter 2: i nstalling the h ardware connecting a pc, terminal, or modem connect a pc running a terminal emulation program, a terminal, or a modem to the console port on the superstack ii bridge/router to configure the bridge/router software and review startup and system operation messages. To c...

  • Page 27: Eatures

    3 f eatures and s pecifications this chapter provides an overview of the superstack ii netbuilder si bridge/router and includes the following information: ■ features ■ back and front panels ■ normal led meanings ■ dip switches ■ hardware interrupt switch ■ serial device requirements ■ physical speci...

  • Page 28

    28 c hapter 3: f eatures and s pecifications back and front panels figure 3 shows the back panel of the superstack ii bridge/router. Figure 3 back panel figure 4 shows the front panel of the model 4xx bridge/router and the model 5xx bridge/router. Memory 8 mb flash memory and 16 mb dram. Serial port...

  • Page 29

    Back and front panels 29 figure 4 models 4xx and 5xx chassis front panel system superstack ii netbuilder status reset run aux load test a 100mb link fault active l1 l1 l2 l2 lan a link active fault b connect fault fwd power/ fault l1 and l2 ethernet connectors serial flex-wan connectors (a and b) wa...

  • Page 30

    30 c hapter 3: f eatures and s pecifications normal led meanings the following sections describe the normal operation of the superstack ii bridge/router leds. For information about led error modes, see the superstack ii bridge/router software guide. System leds the system leds are on the right side ...

  • Page 31

    Normal led meanings 31 wan leds the following figure describes the wan leds when using an isdn connection or a csu/dsu connection. Lan leds the following figure describes the lan leds. Lights green when the path is up. (d channel). Lights green when the isdn line is activated. (d channel). Lights am...

  • Page 32

    32 c hapter 3: f eatures and s pecifications dip switches dip switches are located on the left side of the bridge/router (when facing the front panel) and are for 3com use only. Caution: to avoid accidentally erasing your flash memory or reinitializing the eeprom, make sure all switches are in the d...

  • Page 33

    Serial device requirements 33 figure 5 reset switch (model 5xx) serial device requirements serial devices using the v.25bis command set over a superstack ii bridge/router must support: ■ high-level data link control (hdlc) with nrz. ■ crn command. ■ 8 (data bits), n (no parity), and 1 (stop bit) if ...

  • Page 34

    34 c hapter 3: f eatures and s pecifications physical specifications table 7 provides the environmental requirements of the superstack ii bridge/routers. Table 7 environmental requirements parameter minimum requirement maximum requirement temperature operating 5 °c 40 °c nonoperating -40 °c 75 °c al...

  • Page 35: Onnectors

    4 c onnectors and c ables this chapter describes each connector and the cables that can be used with each connector on the bridge/router. Console connector and cables you can connect a pc running a terminal emulation program, a terminal, or a modem to the console connector on the superstack ii bridg...

  • Page 36

    36 c hapter 4: c onnectors and c ables terminal cable figure 7 shows the pinouts for a 9-pin female to 25-pin null modem-type cable. Figure 7 9-pin to 25-pin terminal cable (null modem-type) modem cable figure 8 shows the pinouts for a 9-pin female to 25-pin male straight-through-type cable. Figure ...

  • Page 37

    Lan connector and cables 37 lan connector and cables the two ethernet connectors, labeled l1 and l2, can be cabled using either 10base-t or 100base-tx cabling. Boundary router models can use only the l1 ethernet port. If you upgrade to full router software, the second port will be functional. The fo...

  • Page 38

    38 c hapter 4: c onnectors and c ables cabling standards cabling should be installed in accordance with the following standards: ■ eia/tia-568 – commercial building telecommunications wiring standard ■ tsb-36 – additional cable specifications for unshielded twisted pair cables ■ ibm cabling guidelin...

  • Page 39

    Lan connector and cables 39 to create a valid collision domain diameter, you must adhere to the following maximum cable span lengths along with the collision domain diameter guidelines in table 9: ■ utp (running tx or t4) — maximum cable span length is ≤ 100 m. ■ fiber (running fx) — maximum cable s...

  • Page 40

    40 c hapter 4: c onnectors and c ables for expanded guidelines, refer to the ieee standard 802.3. Figure 11 collision domain diameter with no repeater figure 12 collision domain diameter with one repeater dte device superstack ii netbuilder dte device superstack ii netbuilder fast ethernet repeater ...

  • Page 41

    Lan connector and cables 41 figure 13 collision domain diameter with two repeaters fast ethernet repeater fast ethernet repeater dte device dte device superstack ii netbuilder table 10 maximum cable length in example collision domain diameters maximum combined cable length, by interface scenario tx ...

  • Page 42

    42 c hapter 4: c onnectors and c ables wan connector and cables the wan connector can be an isdn s/t (model 43x and 53x), isdn u (model 44x and 54x), 56/64 kbps csu/dsu (model 45x and 55x), or t1/ft1 csu/dsu (model 46x and 56x) connector, depending on the interface module installed. Isdn s/t cable t...

  • Page 43

    Wan connector and cables 43 isdn u cable to connect a model 44x or model 54x bridge/router to an isdn network, use a category 5 shielded twisted-pair cable with an rj-45 connector on the bridge/router end, and an rj-11 connector at the wall. This cable comes with your bridge/router. Figure 15 shows ...

  • Page 44

    44 c hapter 4: c onnectors and c ables 56/64k csu/dsu cable to connect a model 45x or model 55x bridge/router to a data digital service (dds), use a cable with an rj-48s connector. 3com supplies this cable. Figure 16 shows the pin assignments of the cable with both ends terminated in rj-48s connecto...

  • Page 45

    Serial connectors and flex-wan cables 45 rj-48 t1 cable to connect a model 46x or model 56x bridge/router to a t1 or fractional t1 line, use a cable with an rj-48 connector. 3com does not supply this cable. Figure 16 shows the pin assignments of the cable with both ends terminated in rj-48 connector...

  • Page 46

    46 c hapter 4: c onnectors and c ables dtes include mainframes and automatic teller machines. Dces include modems and csu/dsus. A dce must always connect to a dte, and vice versa. If you need to connect a dte to a dte, or a dce to a dce, you can use a crossover cable between the two devices. For exa...

  • Page 47

    Serial connectors and flex-wan cables 47 flex-wan cables can be purchased from 3com. Table 11 lists each flex-wan cable and part number. Cable pinouts are provided in the following sections. Table 11 flex-wan cables cable length cable type part number pinouts 4 ft. Rs-232 dte (straight-through cable...

  • Page 48

    48 c hapter 4: c onnectors and c ables rs-232 dte cable pinouts this cable connects the bridge/router to an rs-232 dce. Figure 20 flex-wan and rs-232 dte connectors . Table 12 rs-232 dte cable pinouts flex-wan connector rs-232 dte connector signal pin direction pin signal twisted pair * * unused twi...

  • Page 49

    Serial connectors and flex-wan cables 49 rs-232 dce cable pinouts this cable connects the bridge/router to an rs-232 dte. Figure 21 flex-wan and rs-232 dce connectors . Table 13 rs-232 dce cable pinouts flex-wan connector rs-232 dce connector signal pin direction pin signal twisted pair * * unused t...

  • Page 50

    50 c hapter 4: c onnectors and c ables v.35 dte cable pinouts this cable connects the bridge/router to a v.35 dce. Figure 22 flex-wan and v.35 dte connectors table 14 v.35 dte cable pinouts flex-wan connector v.35 dte connector signal pin direction pin signal twisted pair * * unused twisted wires of...

  • Page 51

    Serial connectors and flex-wan cables 51 v.35 dce cable pinouts this cable connects the bridge/router to a v.35 dte. Figure 23 flex-wan and v.35 dce connectors . Table 15 v.35 dce cable pinouts flex-wan connector v.35 dce connector signal pin direction pin signal twisted pair * * unused twisted wire...

  • Page 52

    52 c hapter 4: c onnectors and c ables x.21 dte cable pinouts this cable connects the bridge/router to an x.21 dce. Figure 24 flex-wan and x.21 dte connectors . Table 16 x.21 dte cable pinouts flex-wan connector x.21 dte connector signal pin direction pin signal twisted pair * * unused twisted wires...

  • Page 53

    Serial connectors and flex-wan cables 53 x.21 dce cable pinouts this cable connects the bridge/router to an x.21 dte. Figure 25 flex-wan and x.21 dce connectors . Table 17 x.21 dce cable pinouts flex-wan connector x.21 dce connector signal pin direction pin signal twisted pair * * unused twisted wir...

  • Page 54

    54 c hapter 4: c onnectors and c ables rs-449 dte cable pinouts this cable connects the bridge/router to an rs-449 dce. Figure 26 flex-wan and rs-449 dte connectors . Table 18 rs-449 dte cable pinouts flex-wan connector rs-449 dte connector signal pin direction pin signal twisted pair cts/rts+ 1 ← 9...

  • Page 55

    Serial connectors and flex-wan cables 55 rs-449 dce cable pinouts this cable connects the bridge/router to an rs-449 dte. Figure 27 flex-wan and rs-449 dce connectors ll/dcd 44 → 10 llsc 12 circuit ground 45 − 37 circuit ground shield ground 46 cable shield 1 shield ground - shorting group 1 48 49 -...

  • Page 56

    56 c hapter 4: c onnectors and c ables rs-530 dte cable pinouts this cable connects the bridge/router to an rs-530 dce. Figure 28 flex-wan and rs-530 dte connectors (continued) txce/txc+ 13 → 5 st+ 7 txce/txc- 14 → 23 st- circuit ground 15 - 19 sgrc 8 circuit ground 16 - 20 sgrc txc/rxc- 23 ← 26 rt-...

  • Page 57

    Serial connectors and flex-wan cables 57 table 20 rs-530 dte cable pinouts flex-wan connector rs-530 dte connector signal pin direction pin signal cts/rts+ 1 ← 5 cts+ cts/rts- 2 ← 13 cts- dsr/dtr+ 3 ← 6 dsr+ dsr/dtr- 4 ← 22 dsr- dcd/dcd+ 5 ← 8 dcd+ dcd/dcd- 5 ← 10 dcd- dtr/dsr+ 7 → 20 dtr+ dtr/dsr- ...

  • Page 58

    58 c hapter 4: c onnectors and c ables hwbook page 58 friday, june 19, 1998 3:42 pm.

  • Page 59: Nstalling

    5 i nstalling or r emoving an i nterface m odule this chapter describes how to install or remove interface modules in superstack ii netbuilder si bridge/routers. The following table lists each model number and the interface module it contains. You can change any model 4xx bridge/router to another mo...

  • Page 60

    60 c hapter 5: i nstalling or r emoving an i nterface m odule 4 remove the cover. Lift cover away from chassis with the front panel facing you, push down on cover with both hands slide cover back slightly hwbook page 60 friday, june 19, 1998 3:42 pm.

  • Page 61

    Removing an existing module (model 4xx) 61 removing an existing module (model 4xx) to remove an existing module from a model 4xx bridge/router, follow these steps: 1 remove the screw from the standoff. 2 remove the module. Rear panel front panel remove screw front panel lift module straight up off t...

  • Page 62

    62 c hapter 5: i nstalling or r emoving an i nterface m odule 3 if you are not installing another module, change the jumper to the left-hand set of pins and reinstall the screw on the standoff. 4 reinstall the cover and the cover screws. Caution: the dip switches should all be in the down position. ...

  • Page 63

    Installing a new module (model 4xx) 63 installing a new module (model 4xx) to install a new module in a model 4xx bridge/router, follow these steps: 1 remove the screw from the standoff if necessary. 2 move the jumper to the right-hand set of pins. Remove screw front panel front panel move the jumpe...

  • Page 64

    64 c hapter 5: i nstalling or r emoving an i nterface m odule 3 insert the new module. 4 reinstall the screw on the standoff. 5 reinstall the cover and the cover screws. Caution: the dip switches should all be in the down position. The dip switches are accessible through an opening on the side of th...

  • Page 65

    Removing an existing module (model 5xx) 65 removing an existing module (model 5xx) to remove an existing module from a model 5xx bridge/router, follow these steps: 1 remove the screw from the standoff. 2 remove the module. Rear panel front panel remove screw front panel lift module straight up off t...

  • Page 66

    66 c hapter 5: i nstalling or r emoving an i nterface m odule 3 if you are not installing another module, change the jumper to the left-hand set of pins and reinstall the screw on the standoff. 4 reinstall the cover and the cover screws. Caution: the dip switches should all be in the down position. ...

  • Page 67

    Installing a new module (model 5xx) 67 installing a new module (model 5xx) to install a new module in a model 5xx bridge/router, follow these steps: 1 remove the screw from the standoff if necessary. Rear panel front panel remove screw hwbook page 67 friday, june 19, 1998 3:42 pm.

  • Page 68

    68 c hapter 5: i nstalling or r emoving an i nterface m odule 2 move the jumper to the right-hand set of pins. 3 insert the new module. Front panel move the jumper to the right-hand set of pins front panel connectors connectors (on underside of module) install module by matching connectors hwbook pa...

  • Page 69

    Installing a new module (model 5xx) 69 4 reinstall the screw on the standoff. 5 reinstall the cover and the cover screws. Caution: the dip switches should all be in the down position. The dip switches are accessible through an opening on the side of the chassis. 6 if the bridge/router was mounted wi...

  • Page 70

    70 c hapter 5: i nstalling or r emoving an i nterface m odule hwbook page 70 friday, june 19, 1998 3:42 pm.

  • Page 71: Rovisioning

    A p rovisioning y our isdn l ine this appendix provides u.S., canadian, german, and dutch provisioning information for the built-in isdn port on model 43x, 53x, 44x and 54x superstack ii netbuilder si bridge/routers. Ordering u.S. And canadian isdn bri services to order isdn service from your teleph...

  • Page 72

    72 a ppendix a: p rovisioning y our isdn l ine ■ phone numbers. Ask the telephone representative for your isdn phone numbers and write them in the space provided. ■ service profile id (spid) number. Ask the telephone representative for your spid numbers. ((for a point-to-point line only one spid may...

  • Page 73

    Ordering u.S. And canadian isdn bri services 73 switch provisioning tables this section provides provisioning information for the following switch types in the u.S. And canada: ■ at&t 5ess ■ at&t 5ess custom ■ dms 100 and national isdn 1 ■ siemens ewsd hwbook page 73 friday, june 19, 1998 3:42 pm.

  • Page 74

    74 a ppendix a: p rovisioning y our isdn l ine at&t 5ess switch to order isdn service for an at&t 5ess switch, provide the telephone company with the information in table 21. Table 21 ordering isdn service for an at&t 5ess switch required information specification line type national isdn 1 line line...

  • Page 75

    Ordering u.S. And canadian isdn bri services 75 at&t 5ess custom switch to order isdn service for an at&t 5ess custom switch, provide the telephone company with the information in table 22. A point-to-point configuration on a superstack ii bridge/router or boundary router is selected by setting the ...

  • Page 76

    76 a ppendix a: p rovisioning y our isdn l ine dms 100 and national isdn 1 to order isdn service for a dms 100 or national isdn 1 switch, provide the telephone company with the information in table 23. Table 23 ordering isdn service for a dms 100 switch required information specification line type d...

  • Page 77

    Ordering u.S. And canadian isdn bri services 77 siemens ewsd switch to order isdn service for a siemens ewsd switch, provide the phone company with the information in table 23. Spids when you request services, you may also need the following information about spids and other service attributes: ■ re...

  • Page 78

    78 a ppendix a: p rovisioning y our isdn l ine ■ the spid numbers must be unique. The 2-digit tid can be any number from 0 to 62. The tid has no effect on the operation of the superstack ii bridge/router, but it is a necessary part of the spid that the bridge/router uses to gain access to the isdn n...

  • Page 79

    Ordering german isdn bri services 79 ordering german isdn bri services to order german isdn services, follow these steps: 1 acquire a form entitled “telefondienstauftrag im isdn (euro-isdn-anschluß)” from the telekom. 2 at the top of the form, select “neuanschluß.” 3 under “auftraggeber,” provide th...

  • Page 80

    80 a ppendix a: p rovisioning y our isdn l ine ordering dutch isdn bri services to order isdn services from the dutch ptt, follow these steps: 1 acquire a form entitled "aanvraag formulier isdn aansluiting from the dutch ptt." 2 under 1, specify “nieuwe isdn-aansluiting". 3 under 3, specify the requ...

  • Page 81: Echnical

    B t echnical s upport 3com provides easy access to technical support information through a variety of services. This appendix describes these services. Information contained in this appendix is correct at time of publication. For the very latest, 3com recommends that you access the 3com corporation ...

  • Page 82

    82 a ppendix b: t echnical s upport to connect to the 3com ftp site, enter the following information into your ftp client: ■ hostname: ftp.3com.Com (or 192.156.136.12 ) ■ username: anonymous ■ password: a user name and password are not needed with web browser software such as netscape navigator and ...

  • Page 83

    Support from your network supplier 83 3comfacts automated fax service the 3comfacts automated fax service provides technical articles, diagrams, and troubleshooting instructions on 3com products 24 hours a day, 7 days a week. Call 3comfacts using your touch-tone telephone: 1 408 727 7021 support fro...

  • Page 84

    84 a ppendix b: t echnical s upport below is a list of worldwide technical telephone support numbers: country telephone number country telephone number asia pacific rim australia hong kong india indonesia japan malaysia new zealand pakistan philippines 1 800 678 515 800 933 486 61 2 9937 5085 001 80...

  • Page 85

    Returning products for repair 85 returning products for repair before you send a product directly to 3com for repair, you must first obtain a return materials authorization (rma) number. Products sent to 3com without rma numbers will be returned to the sender unopened, at the sender’s expense. To ob...

  • Page 86

    Hwbook page 86 friday, june 19, 1998 3:42 pm.

  • Page 87: Ndex

    I ndex numerics 100base-tx cable 38 connector 37 10base-t cable 37 connector 37 3com bulletin board service (3com bbs) 82 3com url 81 3comfacts 83 a at&t 5ess switch custom, ordering 75 standard, ordering 74 b b channels 13 boundary router active ports 20 cabling ethernet 21 bri 13 bulletin board se...

  • Page 88

    88 i ndex cabling the connector 21 ethernet ports 13 f fax service (3comfacts) 83 fcc part 68 iv csu/dsu module iv nt1 module iv feet, attaching 18 flex-wan. See serial port for 14 front panel leds 30 g german isdn bri services 79 h hardware interrupt switch 32 i installing in a rack 19 on a tableto...

  • Page 89

    I ndex 89 recommended serial devices 33 services packet-switched 15 telco 15 shipping carton contents 17 shutting down 26 siemens ewsd switch, ordering 77 software cd-rom 17 recovery 17 spids 77 stacking units with mounting brackets 19 switches at&t 5ess 74 at&t 5ess (custom) 75 dms 100 76 national ...

  • Page 90

    90 i ndex hwbook page 90 friday, june 19, 1998 3:42 pm.

  • Page 91

    3com corporation l imited w arranty h ardware 3com warrants its hardware products to be free from defects in workmanship and materials, under normal use and service, for the following lengths of time from the date of purchase from 3com or its authorized reseller: if a product does not operate as war...

  • Page 92

    Charge customer for the replacement product, at list price. 3com shall not be responsible for any software, firmware, information, or memory data of customer contained in, stored on, or integrated with any products returned to 3com for repair, whether under warranty or not. W arranties e xclusive if...