3COM 3C13880, 3C13751, 3C13701, 3C13759, 3C13755 User Manual

3Com Router 5000 Family and
Router 6000 Family
Module Guide

3C13701
3C13751
3C13755
3C13759

3C13840
3C13880

www.3Com.com

Part Number: 10015049 Rev AA

March 2006

Copyright © 2006, 3Com Corporation. 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) without written permission

from 3Com Corporation.

3Com Corporation reserves the right to revise this documentation and to make changes in content from time to time without

obligation on the part of 3Com Corporation to provide notification of such revision or change.

3Com Corporation provides this documentation without warranty, term, or condition of any kind, either implied or expressed,

including, but not limited to, the implied warranties, terms or conditions of merchantability, satisfactory quality, and fitness for a

particular purpose. 3Com may make improvements or changes in the product(s) and/or the program(s) described in this

documentation at any time.

If there is any software on removable media described in this documentation, it is furnished under a license agreement included

with the product as a separate document, in the hard copy documentation, or on the removable media in a directory file named

LICENSE.TXT or !LICENSE.TXT. If you are unable to locate a copy, please contact 3Com and a copy will be provided to you.

UNITED STATES GOVERNMENT LEGEND

If you are a United States government agency, then this documentation and the software described herein are provided to you

subject to the following:

All technical data and computer software are commercial in nature and developed solely at private expense. Software is

delivered as “Commercial Computer Software” as defined in DFARS 252.227-7014 (June 1995) or as a “commercial item” as

defined in FAR 2.101(a) and as such is provided with only such rights as are provided in 3Com’s standard commercial license for

the Software. Technical data is provided with limited rights only as provided in DFAR 252.227-7015 (Nov 1995) or FAR

52.227-14 (June 1987), whichever is applicable. You agree not to remove or deface any portion of any legend provided on any

licensed program or documentation contained in, or delivered to you in conjunction with, this User Guide.

Unless otherwise indicated, 3Com registered trademarks are registered in the United States and may or may not be registered in

other countries.

3Com, the 3Com logo, are registered trademarks of 3Com Corporation.

Intel and Pentium are registered trademarks of Intel Corporation. Microsoft, MS-DOS, Windows, and Windows NT are

registered trademarks of Microsoft Corporation.

exclusively through X/Open Company, Ltd.

All other company and product names may be trademarks of the respective companies with which they are associated.

UNIX is a registered trademark in the United States and other countries, licensed

3Com Corporation

350 Campus Drive

Marlborough, MA

01752-3064

3Com Router 5000 and Router 6000 v2.41
Module Guide

Table of Contents

Table of Contents

Chapter 1 Overview....................................................................................................................... 1-1

1.1 Types of SICs .................................................................................................................... 1-1

1.2 Types of MIMs ................................................................................................................... 1-1

1.3 Types of FICs..................................................................................................................... 1-2

1.4 SIC/MIM Purchasing Guideline.......................................................................................... 1-3

1.5 Installation/Removal of SIC and MIM ................................................................................ 1-3

1.5.1 Installing/Removing SIC.......................................................................................... 1-4

1.5.2 Installing/Removing MIM......................................................................................... 1-5

1.5.3 Installing/Removing an FIC ..................................................................................... 1-6

1.6 Troubleshooting ................................................................................................................. 1-7

Chapter 2 Smart Interface Cards (Router 5000)......................................................................... 2-1

2.1 Router 1-Port 10/100 SIC .................................................................................................. 2-1

2.1.1 Interface Attributes .................................................................................................. 2-1

2.1.2 Interface Cable........................................................................................................ 2-2

2.1.3 Connecting the Interface Cable............................................................................... 2-2

2.2 Router 1-Port Serial SIC .................................................................................................... 2-3

2.2.1 Introduction.............................................................................................................. 2-3

2.2.2 Appearance............................................................................................................. 2-4

2.2.3 Interface Attributes .................................................................................................. 2-5

2.2.4 Interface LEDs......................................................................................................... 2-6

2.2.5 Interface Cable........................................................................................................ 2-6

2.2.6 Connecting Interface Cable..................................................................................... 2-8

2.3 Router 2-Port ISDN-S/T SIC and Router 2-Port ISDN-U SIC ........................................... 2-9

2.3.1 Introduction.............................................................................................................. 2-9

2.3.2 Appearance............................................................................................................. 2-9

2.3.3 Interface Attributes ................................................................................................ 2-10

2.3.4 Interface LEDs....................................................................................................... 2-10

2.3.5 Interface Cable...................................................................................................... 2-11

2.3.6 Connecting Interface Cable................................................................................... 2-12

2.4 Router 1-Port Fractional E1 SIC ...................................................................................... 2-13

2.4.1 Introduction............................................................................................................ 2-13

2.4.2 Appearance........................................................................................................... 2-13

2.4.3 Interface Attributes ................................................................................................ 2-13

2.4.4 DIP Switch............................................................................................................. 2-14

2.4.5 Interface LEDs....................................................................................................... 2-16

2.4.6 Interface Cable...................................................................................................... 2-17

2.4.7 Connecting Interface Cable................................................................................... 2-18

2.5 Router 1-Port Fractional T1 SIC ...................................................................................... 2-20

i

3Com Router 5000 and Router 6000 v2.41
Module Guide

Table of Contents

2.5.1 Introduction............................................................................................................ 2-20

2.5.2 Appearance........................................................................................................... 2-20

2.5.3 Interface Attributes ................................................................................................ 2-20

2.5.4 Interface LEDs....................................................................................................... 2-21

2.5.5 Interface Cable...................................................................................................... 2-22

2.5.6 Connecting Interface Cable................................................................................... 2-22

2.6 Router 1-Port Analog Modem SIC................................................................................... 2-23

2.6.1 Introduction............................................................................................................ 2-23

2.6.2 Appearance........................................................................................................... 2-23

2.6.3 Interface Attributes ................................................................................................ 2-23

2.6.4 Interface LEDs....................................................................................................... 2-24

2.6.5 Interface Cable...................................................................................................... 2-24

2.6.6 Connecting Interface Cable................................................................................... 2-25

2.7 Router 1-Port FXS SIC/FXO SIC and Router 2-Port FXS SIC/FXO SIC ........................ 2-25

2.7.1 Introduction............................................................................................................ 2-25

2.7.2 Appearance........................................................................................................... 2-26

2.7.3 Interface Attributes ................................................................................................ 2-26

2.7.4 Interface LEDs....................................................................................................... 2-27

2.7.5 Interface Cable...................................................................................................... 2-28

2.7.6 Connecting Interface Cable................................................................................... 2-28

2.8 Router 1-Port SAE SIC .................................................................................................... 2-29

2.8.1 Introduction............................................................................................................ 2-29

2.8.2 Interface Attributes ................................................................................................ 2-29

2.8.3 Interface LEDs....................................................................................................... 2-30

2.8.4 Interface Cable...................................................................................................... 2-31

Chapter 3 Multifunctional Interface Modules (Router 5000) ..................................................... 3-1

3.1 Router 2-Port FXS/FXO/E&M MIM Modules &

Router 4-Port 4FXS/4FXO/4E&M MIM Modules .....................................................................

3-1

3.1.1 Introduction.............................................................................................................. 3-1

3.1.2 Appearance............................................................................................................. 3-1

3.1.3 Interface Attributes .................................................................................................. 3-2

3.1.4 Interface LEDs......................................................................................................... 3-3

3.1.5 Interface Cable........................................................................................................ 3-4

3.1.6 Connecting Interface Cable..................................................................................... 3-6

3.2 Router E1 Voice Module.................................................................................................... 3-7

3.2.1 Introduction.............................................................................................................. 3-7

3.2.2 Appearance............................................................................................................. 3-7

3.2.3 Interface Attributes .................................................................................................. 3-8

3.2.4 Interface LEDs......................................................................................................... 3-8

3.2.5 Interface Cable........................................................................................................ 3-9

3.2.6 Connecting Interface Cable................................................................................... 3-10

3.3 Router T1 Voice Module .................................................................................................. 3-11

ii

3Com Router 5000 and Router 6000 v2.41
Module Guide

Table of Contents

3.3.1 Introduction............................................................................................................ 3-11

3.3.2 Appearance........................................................................................................... 3-11

3.3.3 Interface Attributes ................................................................................................ 3-12

3.3.4 Interface LEDs....................................................................................................... 3-12

3.3.5 Interface Cable...................................................................................................... 3-13

3.3.6 Connecting Interface Cable................................................................................... 3-14

3.4 NDEC Module.................................................................................................................. 3-15

3.4.1 Introduction............................................................................................................ 3-15

3.4.2 Appearance........................................................................................................... 3-15

3.4.3 Interface Attributes ................................................................................................ 3-15

3.4.4 Interface LEDs....................................................................................................... 3-16

3.4.5 Troubleshooting..................................................................................................... 3-17

3.5 Router 2-Port 10/100 MIM ............................................................................................... 3-18

3.5.1 Introduction............................................................................................................ 3-18

3.5.2 Interface Attributes ................................................................................................ 3-18

3.5.3 Interface LEDs....................................................................................................... 3-18

3.5.4 Interface Cable...................................................................................................... 3-19

3.5.5 Connecting the Interface Cable............................................................................. 3-20

3.6 Router 4-Port Serial MIM Module .................................................................................... 3-20

3.6.1 Introduction............................................................................................................ 3-20

3.6.2 Interface Attributes ................................................................................................ 3-22

3.6.3 Interface LEDs....................................................................................................... 3-23

3.6.4 Interface Cable...................................................................................................... 3-23

3.6.5 Connecting the Interface Cable............................................................................. 3-24

3.7 Router 2 AND 4-Port Enhanced Serial MIM .................................................................... 3-25

3.7.1 Introduction............................................................................................................ 3-25

3.7.2 Interface Attributes ................................................................................................ 3-26

3.7.3 Interface LEDs....................................................................................................... 3-27

3.7.4 Interface Cable...................................................................................................... 3-28

3.7.5 Connecting the Interface Cable............................................................................. 3-31

3.8 Router 2 and 4-Port CE1/PRI MIM Modules ................................................................... 3-32

3.8.1 Introduction............................................................................................................ 3-32

3.8.2 Interface Attributes ................................................................................................ 3-32

3.8.3 Interface LEDs....................................................................................................... 3-33

3.8.4 Interface Cable...................................................................................................... 3-34

3.8.5 Internal DIP Switches............................................................................................ 3-37

3.8.6 Connecting the Interface Cable............................................................................. 3-38

3.9 Router 4-Port ISDN-S/T MIM Module.............................................................................. 3-41

3.9.1 Introduction............................................................................................................ 3-41

3.9.2 Interface Attributes ................................................................................................ 3-41

3.9.3 Internal DIP switches ............................................................................................ 3-42

3.9.4 Interface LEDs....................................................................................................... 3-43

iii

3Com Router 5000 and Router 6000 v2.41
Module Guide

Table of Contents

3.9.5 Interface Cable...................................................................................................... 3-43

3.9.6 Connecting the Interface Cable............................................................................. 3-43

3.10 Router 2-Port CT1/PRI MIM .......................................................................................... 3-44

3.10.1 Introduction.......................................................................................................... 3-44

3.10.2 Interface Attributes .............................................................................................. 3-44

3.10.3 Interface LEDs..................................................................................................... 3-45

3.10.4 Interface Cable.................................................................................................... 3-46

3.10.5 Connecting the Interface Cable........................................................................... 3-46

3.11 Router 1-Port ADSL Over POTS MIM ........................................................................... 3-47

3.11.1 Introduction.......................................................................................................... 3-47

3.11.2 Interface Attributes .............................................................................................. 3-48

3.11.3 Panel and Interface LED ..................................................................................... 3-48

3.11.4 Interface Cable.................................................................................................... 3-49

3.11.5 Connecting the Interface Cable........................................................................... 3-49

3.12 Router 2-Port ADSL Over POTS MIM ........................................................................... 3-50

3.12.1 Introduction.......................................................................................................... 3-50

3.12.2 Interface Attributes .............................................................................................. 3-50

3.12.3 Panel and Interface LED ..................................................................................... 3-51

3.12.4 Interface Cable.................................................................................................... 3-51

3.12.5 Connecting the Interface Cable........................................................................... 3-52

3.13 Router NDEC2 Encryption Accelerator MIM ................................................................. 3-52

3.13.1 Introduction.......................................................................................................... 3-52

3.13.2 Appearance......................................................................................................... 3-53

3.13.3 Interface Attributes .............................................................................................. 3-53

3.13.4 Interface LEDs..................................................................................................... 3-53

3.13.5 Troubleshooting .................................................................................................. 3-54

3.14 Router 4-Port E1 IMA MIM ............................................................................................ 3-55

3.14.1 Introduction.......................................................................................................... 3-55

3.14.2 Appearance of the Interface Card....................................................................... 3-55

3.14.3 Interface Attributes .............................................................................................. 3-55

3.14.4 Panels and Interface LEDs ................................................................................. 3-56

3.14.5 Interface Cable.................................................................................................... 3-57

3.14.6 Connection of the Interface Cable ...................................................................... 3-57

3.15 Router 4-Port T1 IMA MIM............................................................................................. 3-58

3.15.1 Introduction to the Interface card ........................................................................3-58

3.15.2 Appearance of the Interface Card....................................................................... 3-58

3.15.3 Interface Attributes .............................................................................................. 3-58

3.15.4 Panels and Interface LEDs ................................................................................. 3-59

3.15.5 Connection of the Interface Cable ...................................................................... 3-59

3.16 Router 1-Port CE3 MIM Module .................................................................................... 3-60

3.16.1 Introduction.......................................................................................................... 3-60

3.16.2 Interface Attributes .............................................................................................. 3-60

iv

3Com Router 5000 and Router 6000 v2.41
Module Guide

Table of Contents

3.16.3 Interface LEDs..................................................................................................... 3-61

3.16.4 Interface Cable.................................................................................................... 3-61

3.16.5 Connecting the Interface Cable........................................................................... 3-62

3.17 Router 1-Port CT3 MIM Module..................................................................................... 3-62

3.17.1 Introduction.......................................................................................................... 3-62

3.17.2 Interface Attributes .............................................................................................. 3-63

3.17.3 Interface LEDs..................................................................................................... 3-63

3.17.4 Interface Cable.................................................................................................... 3-64

3.18 Router 1-Port 10/100/1000 MIM .................................................................................... 3-64

3.18.1 Introduction.......................................................................................................... 3-64

3.18.2 Interface Attributes .............................................................................................. 3-64

3.18.3 Interface Cable.................................................................................................... 3-65

3.18.4 Connecting the Interface Cable........................................................................... 3-65

Chapter 4 Flexible Interface Cards (Router 6000)...................................................................... 4-1

4.1 Router 2-Port 10/100 FIC .................................................................................................. 4-1

4.1.1 Introduction.............................................................................................................. 4-1

4.1.2 Interface Attributes .................................................................................................. 4-1

4.1.3 Panel and Interface LEDs ....................................................................................... 4-1

4.1.4 Interface Cable........................................................................................................ 4-2

4.1.5 Connecting the Interface Cable............................................................................... 4-3

4.2 Router 1-Port 100FX MM FIC/100FX SM FIC................................................................... 4-3

4.2.1 Introduction.............................................................................................................. 4-3

4.2.2 Interface Attributes .................................................................................................. 4-4

4.2.3 Panel and Interface LEDs ....................................................................................... 4-5

4.2.4 Interface Optical Fiber............................................................................................. 4-5

4.2.5 Connecting the Interface Optical Fiber ................................................................... 4-6

4.3 Router 1-Port 10/100/1000 FIC ......................................................................................... 4-7

4.3.1 Introduction.............................................................................................................. 4-7

4.3.2 Interface Attributes .................................................................................................. 4-7

4.3.3 Panel and Interface LEDs ....................................................................................... 4-8

4.3.4 Interface Cable........................................................................................................ 4-8

4.3.5 Connecting the Interface Cable............................................................................... 4-8

4.4 Router 1-Port Gigabit Ethernet Fiber FIC .......................................................................... 4-9

4.4.1 Introduction.............................................................................................................. 4-9

4.4.2 Interface Attributes .................................................................................................. 4-9

4.4.3 Panel and Interface LEDs ....................................................................................... 4-9

4.4.4 Interface Cable...................................................................................................... 4-10

4.4.5 Connecting the Interface Optic Fiber .................................................................... 4-11

4.5 1-Port GEF FIC................................................................................................................ 4-11

4.5.1 Introduction............................................................................................................ 4-11

4.5.2 Interface Attributes ................................................................................................ 4-12

4.5.3 Interface LEDs....................................................................................................... 4-12

v

3Com Router 5000 and Router 6000 v2.41
Module Guide

Table of Contents

4.5.4 Interface Cable...................................................................................................... 4-13

4.5.5 Connecting the Interface Optic Fiber .................................................................... 4-14

4.6 Router 4-Port/8-Port Enhanced Serial FIC ...................................................................... 4-14

4.6.1 Introduction............................................................................................................ 4-14

4.6.2 Interface Attributes ................................................................................................ 4-16

4.6.3 Panel and Interface LEDs ..................................................................................... 4-17

4.6.4 Interface Cable...................................................................................................... 4-17

4.6.5 Connecting the Interface Cable............................................................................. 4-20

4.7 Router 4-Port CE1/PRI FIC ............................................................................................. 4-21

4.7.1 Introduction............................................................................................................ 4-21

4.7.2 Interface Attributes ................................................................................................ 4-21

4.7.3 Panel and Interface LEDs ..................................................................................... 4-22

4.7.4 Interface Cable...................................................................................................... 4-23

4.7.5 Internal DIP Switch................................................................................................ 4-25

4.7.6 Connecting the Interface Cable............................................................................. 4-26

4.8 Router 4-Port CT1/PRI FIC and Router 4-Port Fractional T1 FIC................................... 4-28

4.8.1 Introduction............................................................................................................ 4-28

4.8.2 Interface Attributes ................................................................................................ 4-28

4.8.3 Panel and Interface LEDs ..................................................................................... 4-29

4.8.4 Interface Cable...................................................................................................... 4-29

4.8.5 Connecting the Interface Cable............................................................................. 4-30

4.9 Router 1-Port CE3 FIC .................................................................................................... 4-31

4.9.1 Introduction............................................................................................................ 4-31

4.9.2 Interface Attributes ................................................................................................ 4-31

4.9.3 Panel and Interface LEDs ..................................................................................... 4-32

4.9.4 Interface Cable...................................................................................................... 4-32

4.9.5 Connecting the Interface Cable............................................................................. 4-33

4.10 Router 1-Port CT3 FIC................................................................................................... 4-33

4.10.1 Introduction.......................................................................................................... 4-33

4.10.2 Interface Attributes .............................................................................................. 4-33

4.10.3 Panel and Interface LEDs ................................................................................... 4-34

4.10.4 Interface Cable.................................................................................................... 4-34

4.11 8.8 Router 1-Port E3 ATM FIC.................................................................................... 4-35

4.11.1 Introduction.......................................................................................................... 4-35

4.11.2 Interface Attributes .............................................................................................. 4-35

4.11.3 Panel and Interface LEDs ................................................................................... 4-36

4.11.4 Interface Cable.................................................................................................... 4-36

4.11.5 Connecting the Interface Cable........................................................................... 4-37

4.12 Router 1-Port T3 ATM FIC............................................................................................. 4-37

4.12.1 Introduction.......................................................................................................... 4-37

4.12.2 Interface Attributes .............................................................................................. 4-37

4.12.3 Panel and Interface LEDs ................................................................................... 4-38

vi

3Com Router 5000 and Router 6000 v2.41
Module Guide

Table of Contents

4.12.4 Interface Cable.................................................................................................... 4-39

4.12.5 Connecting the Interface Cable........................................................................... 4-39

4.13 Router 1-Port OC-3 ATM MM FIC & Router 1-Port OC-3 ATM SM FIC &

Router 1-Port OC-3 ATM SML FIC........................................................................................

4.13.1 Introduction.......................................................................................................... 4-40

4.13.2 Interface Attributes .............................................................................................. 4-40

4.13.3 Panel and Interface LEDs ................................................................................... 4-41

4.13.4 Interface Optical Fiber......................................................................................... 4-44

4.14 Router 1/2-Port ADSL FIC ............................................................................................. 4-45

4.14.1 Introduction.......................................................................................................... 4-45

4.14.2 Interface Attributes .............................................................................................. 4-45

4.14.3 Panel and Interface LED ..................................................................................... 4-46

4.14.4 Interface Cable.................................................................................................... 4-46

4.14.5 Connecting the Interface Cable........................................................................... 4-47

4.15 Router 1-Port ADSL FIC/Router 2-Port ADSL FIC........................................................ 4-47

4.15.1 Introduction.......................................................................................................... 4-47

4.15.2 Interface Attributes .............................................................................................. 4-48

4.15.3 Panel and Interface LEDs ................................................................................... 4-48

4.15.4 Interface Cable.................................................................................................... 4-49

4.15.5 Connecting the Interface Cable........................................................................... 4-49

4.16 Router 4-Port E1 IMA FIC.............................................................................................. 4-50

4.16.1 Introduction.......................................................................................................... 4-50

4.16.2 Interface Attributes .............................................................................................. 4-50

4.16.3 Panel and Interface LEDs ................................................................................... 4-51

4.16.4 Interface Cable.................................................................................................... 4-51

4.16.5 Connecting the Interface Cable........................................................................... 4-52

4.17 Router 4-Port T1 IMA FIC.............................................................................................. 4-53

4.17.1 Introduction.......................................................................................................... 4-53

4.17.2 Interface Attributes .............................................................................................. 4-53

4.17.3 Panel and Interface LEDs ................................................................................... 4-54

4.17.4 Interface Cable.................................................................................................... 4-54

4.17.5 Connecting the Interface Cable........................................................................... 4-54

4.18 Router 1-Port OC3 POS FIC ......................................................................................... 4-54

4.18.1 Introduction.......................................................................................................... 4-54

4.18.2 Interface Attributes .............................................................................................. 4-55

4.18.3 Panel and Interface LEDs ................................................................................... 4-56

4.18.4 Connecting the Interface Optical Fiber ............................................................... 4-57

4.19 Router 2-Port FXS/2-Port FXO FIC and Router 4-Port FXS/4-Port FXO FIC ............... 4-57

4.19.1 Introduction.......................................................................................................... 4-57

4.19.2 Interface Attributes .............................................................................................. 4-58

4.19.3 Panel and Interface LEDs ................................................................................... 4-58

4.19.4 Interface Cable.................................................................................................... 4-59

4-40

vii

3Com Router 5000 and Router 6000 v2.41
Module Guide

Table of Contents

4.19.5 Connecting the Interface Cable........................................................................... 4-60

4.20 Router 1-Port E1 Voice FIC ........................................................................................... 4-60

4.20.1 Introduction.......................................................................................................... 4-60

4.20.2 Interface Attributes .............................................................................................. 4-61

4.20.3 Panel and Interface LEDs ................................................................................... 4-61

4.20.4 Interface Cable.................................................................................................... 4-62

4.20.5 Connecting the Interface Cable........................................................................... 4-63

4.21 Router 1-Port T1 Voice FIC ........................................................................................... 4-64

4.21.1 Introduction.......................................................................................................... 4-64

4.21.2 Interface Attributes .............................................................................................. 4-64

4.21.3 Panel and Interface LEDs ................................................................................... 4-64

4.21.4 Interface Cable.................................................................................................... 4-65

4.21.5 Connecting the Interface Cable........................................................................... 4-65

4.22 Router NDEC2 Encryption Accelerator FIC................................................................... 4-66

4.22.1 Introduction.......................................................................................................... 4-66

4.22.2 Interface Features ............................................................................................... 4-66

4.22.3 Panel and LEDs .................................................................................................. 4-67

4.22.4 Troubleshooting .................................................................................................. 4-67

4.23 RPU2 Encryption Accelerator ........................................................................................ 4-68

4.23.2 Specifications ...................................................................................................... 4-69

4.23.3 LED and button ................................................................................................... 4-69

4.23.4 Interface .............................................................................................................. 4-70

4.23.5 Encryption daughter card .................................................................................... 4-70

viii

3Com Router 5000 and Router 6000 v2.41
Module Guide

Chapter 1 Overview

Information about interface cards and modules other than Smart Interface Cards

(SICs), Multi-Functional Interface Modules (MIMs), and Flexible Interface Cards (FICs)

are beyond the scope of this manual. This specifically addresses the modules

associated with this release. Information on other modules appears in the Router

5000 or Router 6000 Family Installation Manuals.

1.1 Types of SICs

3Com 5000 Router Family provide two SIC slots which can accept the following types

of SICs for this release.

z Router 1-Port 10/100 SIC (3C13712)

z Router 1-Port Serial SIC (3C13714)

z Router 1-Port SAE SIC card (3C13715)

z Router 2-Port ISDN-S/T SIC (3C13716)

z Router 2-Port ISDN-U SIC (3C13718)

z Router 1-Port Fractional T1 SIC (3C13720A)

z Router 1-Port Fractional E1 SIC (3C13722)

z Router 1-Port Analog Modem SIC (3C13724)

z Router 1-port FXS SIC card (3C13725)

z Router 2-port FXS SIC card (3C13726)

z Router 1-port FXO SIC card (3C13727)

z Router 2-port FXO SIC card (3C13728)

Chapter 1 Overview

1.2 Types of MIMs

3Com 5000 Router Family modular routers provide MIM slots for this release and

support the following MIMs:

z Router 2-Port 10/100 MIM ((3C13761)

z Router 2-Port Enhanced Serial MIM (3C13762)

z Router 4-Port Serial MIM (3C13763)

z Router 4-Port Enhanced Serial MIM (3C13764)

z Router 2-Port CE1/PRI MIM (3C13765)

z Router 4-Port CE1/PRI MIM (3C13766)

z Router 4-Port ISDN-S/T MIM (3C13767)

z Router 2-Port CT1/PRI MIM (3C13769A)

z Router 1-Port ADSL over POTS MIM (3C13770)

z Router NDEC Encryption Accelerator MIM (3C13771-75)

z Router 2-Port ADSL over POTS MIM (3C13772)

1-1

3Com Router 5000 and Router 6000 v2.41
Module Guide

z Router NDEC2 Encryption Accelerator MIM (3CR13773-75)

z Router 1-Port 10/100/1000 MIM (3C13774)

z Router 1-Port CT-3 MIM (3C13775A)

z Router 1-Port CE3 MIM (3C13777)

z Router 4-Port E1 IMA MIM (3C13778)

z Router 4-Port T1 IMA MIM (3C13779)

z Router 2-port FXS MIM module (3C13780)

z Router 2-port FXO MIM module (3C13783)

z Router 2-port E&M MIM module (3C13785)

z Router 4-port FXS MIM module (3C13781)

z Router 4-port FXO MIM module (3C13784)

z Router 4-port E&M module (3C13786)

z Router 1-port E1 Voice MIM module (3C13787)

z Router 1-port T1 Voice MIM module (3C13788)

1.3 Types of FICs

Chapter 1 Overview

3Com 6000 Router Family modular routers provide FIC slots for this release and

support the following FICs:

z Router 1-Port 100FX MM FIC (3C13860)

z Router 2-Port 10/100 FIC (3C13861)

z Router 1-Port 100FX SM FIC (3C13862)

z Router 4-Port Enhanced Serial FIC (3C13863)

z Router 8-Port Enhanced Serial FIC (3C13864)

z Router 4-Port CE1/PRI FIC (3C13866)

z Router 4-Port CT1/PRI FIC (3C13870A)

z Router 1-Port ADSL (over POTS) FIC (3C13871)

z Router 2-Port ADSL (over POTS) FIC (3C13872)

z Router NDEC2 Encryption Accelerator FIC (3CR13873-75)

z Router 4-Port E1 IMA FIC (3C13874)

z Router 4-Port T1 IMA FIC (3C13875)

z Router 1-Port E3 ATM FIC (3C13876)

z Router 1-Port T3 ATM FIC (3C13877)

z Router 4-Port Fractional T1 FIC (3C13821)

z Router 4-Port Fractional E1 FIC (3C13823)

z Router 1-Port OC-3 POS FIC (3C13881)

z Router 1-Port OC-3 ATM MM FIC (3C13882)

z Router 1-Port OC-3 ATM SM FIC (3C13884)

z Router 1-Port OC-3 ATM SML FIC (3C13886)

z Router 1-Port 10/100/1000 FIC (3C13887)

z Router 1-Port Gigabit Ethernet Fiber FIC (3C13879)

z Router 1-Port 1000Base-SX SFP FIC (3CSFP91)

1-2

3Com Router 5000 and Router 6000 v2.41
Module Guide

z Router 1-Port CE3 FIC (3C13888)

z Router 1-Port CT3 FIC (3C13889A)

z Router 1-Port Fractional T1 FIC (3C13889A)

z Router 1-Port Fractional T3 FIC (3C13889A)

z Router 2-Port FXS FIC (3C13890)

z Router 4-Port FXS FIC (3C13891)

z Router 2-Port FXO FIC (3C13893)

z Router 4-Port FXO FIC (3C13894)

z Router 2-Port E&M FIC (3C13895)

z Router 4-Port E&M FIC (3C13896)

z Router 1-Port E1 Voice FIC (3C13897)

z Router 1-Port T1 Voice FIC (3C13898)

z Router RPU2 Encryption Accelerator FIC (3CR13806-75)

1.4 SIC/MIM Purchasing Guideline

Chapter 1 Overview

You may equip a 3Com Series Modular Router with appropriate SICs and MIMs and

are allowed to:

z Install several SICs or MIMs of the same type on the router;

z Install a SIC or MIM in any slot on the router, disregarding its type.

Also, you should:

z Select interface cable appropriate to each SIC or MIM;

1.5 Installation/Removal of SIC and MIM

Warning:

3Com 5000 Family Routers do not support online insertion and removal of SICs and MIMs. Before

implementing any of the following operations, wear an anti-static wrist strap and ESD-preventive glove,

and make sure that the power of the Router has been turned off and the power cord has been

unplugged. Otherwise, the operator may get an electric shock or the Router may get damaged.

Caution:

z The electromagnetic interference (EMI) gaskets on the front panel of each MIM/SIC can protect the

whole router. Please leave the gaskets intact when uninstalling or replacing the MIM/SIC and never

remove them;

1-3

3Com Router 5000 and Router 6000 v2.41
Module Guide

z In case of the possible damage to MIMs, put the MIMs on the Printed Circuit Board (PCB) tray during

the installation and replacement;

z Hold the circuit board by the edge and do not touch the components and the surface of the PCB;

z If you are not planning to install a new MIM/SIC after removing the old one, install a blank filler panel

to keep the chassis dust-free and thereby to ensure the normal ventilation of the Router.

1.5.1 Installing/Removing SIC

I. Tools required

z Flat-blade screwdriver
z ESD-preventive wrist strap and ESD-preventive glove

II. Removing blank filler panel from SIC slot

Following the rotating direction shown in this figure, remove the captive screws of the
blank filler panel using the flat-blade screwdriver.

Chapter 1 Overview

Figure 1-1 Removing the blank filler panel from a SIC slot

III. Installing SIC

Follow these steps to install a SIC:

Step 1: Place the rear panel of the Router towards you;

Step 2: Turn off the power switch of the Router and unplug the power cord;

Step 3: Take out the SIC and align its remote edge with the edge of the slot on the
Router’s rear panel;

Step 4: Push the SIC into the Router until it closely mates with the rear panel of the
Router;

Step 5: Fasten the SIC into the Router with captive screws;

Step 6: Power on the Router, and check the LEDs of the corresponding slot on the

front panel: after the initialization of the SIC, ON means that the SIC is operating

normally and OFF means that its Power-On Self-Test (POST) has failed. In the latter
case, please contact your agent.

1-4

3Com Router 5000 and Router 6000 v2.41
Module Guide

Figure 1-2 Installing SIC

IV. Removing SIC

Follow these steps to remove a SIC:

Step 1: Place the rear panel of the Router towards you;

Chapter 1 Overview

Step 2: Turn off the power switch of the Router and unplug the power cord;

Step 3: Unplug all the network interface cables connected to the rear panel of the
Router;

Step 4: Remove the captive screws on both sides of the SIC using the flat-blade
screwdriver;

Step 5: Pull the SIC outward until it is completely taken out of the Router chassis.

1.5.2 Installing/Removing MIM

I. Tools required

z Flat-blade screwdriver

z ESD-preventive wrist strap and ESD-preventive glove

II. Installing MIM

Follow these steps to install a MIM:

Step 1: Place the rear panel of the Router towards you;

Step 2: Turn off the power switch of the Router and unplug the power cord;

Step 3: Select a slot and insert the MIM along the guides in the slot until it contacts the

rear panel of the Router;

Step 4: Fix the MIM into the Router with captive screws;

Step 5: Power on the Router, and check the LEDs of the corresponding slot on the

front panel: ON means that the MIM is operating normally and OFF means that the

POST of the MIM has failed. In the latter case, please contact your agent.

1-5

3Com Router 5000 and Router 6000 v2.41
Module Guide

Figure 1-3 Installing MIM (1)

Chapter 1 Overview

Figure 1-4 Installing MIM (2)

III. Removing MIM

Follow these steps to remove a MIM:

Step 1: Place the rear panel of the Router towards you;

Step 2: Turn off the power switch of the Router and unplug the power cord;

Step 3: Unplug all interface cables from the rear panel of the Router;

Step 4: Loosen the captive screws at both sides of the MIM;

Step 5: Pull the MIM towards you until it is completely separated from the bottom of the

router.

1.5.3 Installing/Removing an FIC

Caution:

The EMI gaskets on the FIC panel can filter electromagnetic interference of the router.

Do not damage them when uninstalling or replacing an FIC.

If you do not install a new FIC after removing the old one, replace the blank filter panel

to keep off the dust and ensure adequate ventilation of the router.

1-6

3Com Router 5000 and Router 6000 v2.41
Module Guide

Chapter 1 Overview

The router series supports hot swapping. Thus, you can remove or install FICs when

the router is running without disconnecting the power supply. But before that, you must

first execute the remove slot command; otherwise, unknown errors might occur. When

you replace the removed FICs, you do not need to execute the undo remove slot

command however.

If you execute the remove slot command inadvertently, you can cancel that operation

by using the undo remove slot command.

I. Tools required

ESD-preventive wrist strap

II. Removing an FIC

Step 1: Place the router with the front panel forward.

Step 2: Remove the cables connected to the FIC.

Step 3: Loosen the captive screws at both sides of the FIC.

Step 4: Push the ejector levers at both sides of the FIC outward, pull the FIC out of the slot

along the guides until disengaging it totally from the slot.

III. Installing an FIC

Step 1: Place the router with the front panel forward.

Step 2: Align the remote edge of the FIC with the slot edge, push it into the slot, push the

ejector levers inward until it presses against the FIC panel (the angles thus formed

between the FIC panel and the levers are the minimum angles).

Step 3: Fix the FIC in the chassis by fastening the captive screws.

Repeat these steps to install all the other FICs.

1.6 Troubleshooting

3Com 5000 Routers LEDs, indicate the state of the module as follows:

After the installation of a SIC/MIM, turn on the power and view the corresponding

LEDs (such as SLOT0, SLOT1 or SLOT2) on the cover of the Router chassis: ON

means that the SIC/MIM is operating normally and OFF means that the Power-On

Self-Test (POST) of the SIC/MIM has failed.

If the installed SIC/MIM is in abnormal state, check that:

z Proper interface cable is used;

z The LEDs on the panel of SIC/MIM are displaying normally (see the section

introducing the SIC/MIM for its LED status and description);

z The SIC/MIM accepts the configuration and works well using the display

command.

1-7

3Com Router 5000 and Router 6000 v2.41
Module Guide

Chapter 2 Smart Interface Cards

Chapter 2 Smart Interface Cards (Router 5000)

2.1 Router 1-Port 10/100 SIC

1-port 10Base-T/100Base-TX Ethernet interface card, in which FE stands for Fast

Ethernet module. This is used to implement the communication between Routers and

LANs. It supports:

z Effective transmission distance of 100 meters with category-5 twisted pair cables;

z Operating speeds of both 100 Mbps and 10 Mbps and autosensing;

z Both full duplex (in common use) and half-duplex operating modes.

2.1.1 Interface Attributes

The interface attributes of Router 1-Port 10/100 SIC are given in the following table:

Table 2-1 Interface attributes of Router 1-Port 10/100 SIC

Attribute Router 1-Port 10/100 SIC

Connector type RJ-45

Interface type MDI

Number of connectors 1

Cable type Straight-through Ethernet cable

Router 1-Port 10/100 SIC panel is shown in the following figure:

Figure 2-1 Router 1-Port 10/100 SIC panel

The status description of the LEDs on Router 1-Port 10/100 SIC panel is listed in the

following table:

Table 2-2 Description of the LEDs on Router 1-Port 10/100 SIC panel

LINK OFF means no link is present; ON means a link is present.

ACT

OFF means no data is being transmitted or received; blinking means data is

2-1

3Com Router 5000 and Router 6000 v2.41
Module Guide

being received or/and transmitted.

2.1.2 Interface Cable

Normally, category-5 twisted pair cable is adopted to connect the 10BASE-T

/100BASE-TX Ethernet interface to the Ethernet, as shown in the following figure:

Figure 2-2 Ethernet cable

Ethernet cables fall into two categories: straight-through cables and crossover cables,

specifically,

Chapter 2 Smart Interface Cards

z Straight-through cable: the wire sequences of the twisted pair cable crimped in

the RJ-45 connectors at both ends are completely the same. It is used to connect

terminal devices (such as PCs, routers) to Hubs or LAN Switches.

z Crossover cable: The wire sequences of twisted pair cable crimped in the RJ-45

connectors at both ends are different. It can be used to connect two terminal

devices (such as PCs and Routers). You can such kind of cables by yourself if

necessary.

2.1.3 Connecting the Interface Cable

If the SIC has been properly installed, follow these steps to connect the interface

cable:

Step 1: Connect the Ethernet port of SIC to a PC or router using a crossover cable and

to a Hub or LAN Switch using a straight-through cable;

Step 2: Power on the Router and check the SLOT1 LED on its front panel: ON means

that the SIC is operating normally and OFF means that the Power-On Self-Test (POST)

of the SIC has failed. In the latter case, please contact your agent.

Step 3: Check the status of LINK LED on the panel: ON means the link is connected

and OFF means the link is not connected. In the latter case, check the line.

2-2

3Com Router 5000 and Router 6000 v2.41
Module Guide

2.2 Router 1-Port Serial SIC

2.2.1 Introduction

1-port multiprotocol synchronous/asynchronous serial interface card (Router 1-Port

Serial SIC) supports both synchronous and asynchronous operating modes. It
supports:

z Transmission/Receiving and handling of synchronous and asynchronous serial

data streams;

z Different operating modes, such as V.24/V.35 and DTE/DCE, depending on the

actual applications;

z Automatic external cable type detection without the need of manual configuration;
z Local loopback and remote loopback, facilitating fault test and location.

I. Synchronous and asynchronous

In different operating modes, a synchronous/asynchronous serial interface supports

different signal standards and baud rates and the maximum transmission distance of
the signals is related to the baud rate setting. For the relationships between cable type,
baud rate setting and signal transmission distance, see the following table.

Chapter 2 Smart Interface Cards

Table 2-3 Baud rate and transmission distance of V.24 (RS232)/V.35 cable

V.24 (RS232) V.35

Baud rate (bps)

Maximum

transmission

Distance (m)

Baud rate (bps)

Maximum

transmission

Distance (m)

2400 60 2400 1250

4800 60 4800 625

9600 30 9600 312

19200 30 19200 156

38400 20 38400 78

64000 20 56000 60

115200 10 64000 50

- - 2048000 30

2-3

3Com Router 5000 and Router 6000 v2.41
Module Guide

Caution:

The baud rate cannot exceed 64 kbps if V.24 cable is used and the interface operates in synchronous
mode.

II. DTE and DCE

The synchronous serial interface supports both DTE (Data Terminal Equipment) and
DCE (Data Circuit-terminating Equipment) operating modes. Given that two devices

are directly connected, if one operates in the DTE mode, the other will operate in the

DCE mode. The DCE device provides the synchronous clock and specifies the

communicating rate. The DTE device receives the synchronous clock and
communicates at the specified rate. Generally, the Router is used as a DTE device. To

make sure that the device is a DTE or DCE, refer to the manual shipped with this

device. In addition, the following table may also help you to identify the type of the
device.

Chapter 2 Smart Interface Cards

Table 2-4 Typical DTE and DCE equipment

Equipment type Interface type Typical equipment

DTE Male PC, Router

DCE Female Modem, Multiplexer, CSU/DSU

Asynchronous serial interface is generally used as dialing port and connected to a

modem or a Terminal Adapter (TA). In this case, regardless of the operating mode of
the device, only an appropriate baud rate for the interface needs to be selected.

Synchronous serial interface is generally used for the direct connection to such a
device as DDN, frame relay, or X.25 switch.

2.2.2 Appearance

Router 1-Port Serial SIC is illustrated in the following figure:

2-4

3Com Router 5000 and Router 6000 v2.41
Module Guide

Figure 2-3 Router 1-Port Serial SIC

2.2.3 Interface Attributes

The interface attributes of Router 1-Port Serial SIC are given in the following table:

Table 2-5 Interface attributes of Router 1-Port Serial SIC

Attribute

Chapter 2 Smart Interface Cards

Description

Synchronous Asynchronous

Connector type DB50

Number of

connectors

1

V.24 (RS232) DTE cable

V.24 (RS232) DCE cable

Cable type

V.35 DTE cable

V.35 DCE cable

Interface standard

and Operating mode

Minimum baud rate

(bps)

Maximum baud rate

(bps)

V.24 V.35

DTE, DCE DTE DCE

1200 1200 1200 300

64K 4.096M 2.048M 115.2K

RS232

2-5

3Com Router 5000 and Router 6000 v2.41
Module Guide

Attribute

Chapter 2 Smart Interface Cards

Description

Synchronous Asynchronous

Modem dial-up

Supported service

2.2.4 Interface LEDs

Router 1-Port Serial SIC panel is shown in the following figure:

Figure 2-4 Router 1-Port Serial SIC panel

The status description of the LEDs on Router 1-Port Serial SIC panel is listed in the
following table:

DDN leased line

Terminal access

Backup

Dumb terminal

access

Asynchronous

leased line

Backup

Table 2-6 Description of the LEDs on Router 1-Port Serial SIC panel

LINK OFF means no link is present; ON means a link is present.

ACT

2.2.5 Interface Cable

Router 1-Port Serial SIC interface cables are synchronous/asynchronous serial
interface cables that fit into four types:

z V.24 (RS232) DTE cable, with DB25 (male) connector at the network end;
z V.24 (RS232) DCE cable, with DB25 (female) connector at the network end;
z V.35 DTE cable, with 34PIN (male) connector at the network end;
z V.35 DCE cable, with 34PIN (female) connector at the network end.

OFF means no data is being transmitted or received; blinking means data is being

received or/and transmitted.

2-6

3Com Router 5000 and Router 6000 v2.41
Module Guide

At one end of these cables is DB50 connector for the connection to a router, and at the

other end (network end) is a connector whose type varies by the network device (or

line type) to be connected.

Caution:

The four types of cables listed above are optional, which must be selected while purchasing the Router

1-Port Serial SIC. Otherwise they will not be supplied.

z V.24 (RS232) DTE cable

Chapter 2 Smart Interface Cards

Figure 2-5 V.24 (RS232) DTE cable

z V.24 (RS232) DCE cable

Figure 2-6 V.24 (RS232) DCE cable

z V.35 DTE cable

2-7

3Com Router 5000 and Router 6000 v2.41
Module Guide

Figure 2-7 V.35 DTE cable

z V.35 DCE cable

Chapter 2 Smart Interface Cards

Figure 2-8 V.35 DCE cable

For the pinouts of synchronous/asynchronous serial interface cable, see Low-End and
Mid-Range Series Routers Cable Manual.

2.2.6 Connecting Interface Cable

Warning:

Do not plug or unplug synchronous/asynchronous serial interface cables when the Router has power.

Otherwise, it is likely to damage the equipment and ports.

If the SIC has been properly installed, follow these steps to connect the
synchronous/asynchronous serial interface cable:

Step 1: Insert the DB50 connector of the cable into the DB50 port on the Router 1-Port
Serial SIC;

Step 2: Connect the other end of the cable to:

z CSU/DSU (a type of data transfer device), if the WAN is a DDN line, or
z Analog modem, if the WAN is a dial-up line.

2-8

3Com Router 5000 and Router 6000 v2.41
Module Guide

Step 3: Power on the Router, and check the LEDs of the corresponding slot on the

front panel: ON means that the SIC is operating normally and OFF means that the
POST of the SIC has failed. In the latter case, please contact your agent;

Step 4: Check the status of LINK LED on the Router 1-Port Serial SIC panel: ON

means the link is connected and OFF means the link is not connected. In the latter
case, check the line.

Chapter 2 Smart Interface Cards

2.3 Router 2-Port ISDN-S/T SIC and Router 2-Port ISDN-U SIC

2.3.1 Introduction

1/2-port ISDN BRI S/T interface cards (Router 2-Port ISDN-S/T SIC) serve to

transmit/receive and handle one and two channels of ISDN BRI S/T data streams.

1/2-port ISDN BRI U interface cards (Router 2-Port ISDN-U SIC) server to
transmit/receive and handle one and two channels of ISDN BRI U data streams.

Both Router 2-Port ISDN-S/T SIC and Router 2-Port ISDN-U SIC have two types of
operating modes: dial-up and leased line.

2.3.2 Appearance

Router 2-Port ISDN-S/T SIC and Router 2-Port ISDN-U SIC are shown in the following
figures:

Figure 2-9 Router 2-Port ISDN-S/T SIC

2-9

3Com Router 5000 and Router 6000 v2.41
Module Guide

Figure 2-10 Router 2-Port ISDN-U SIC

2.3.3 Interface Attributes

The interface attributes of Router 2-Port ISDN-S/T SIC and Router 2-Port ISDN-U SIC
are given in the following table:

Table 2-7 Interface attributes of Router 2-Port ISDN-S/T SIC and Router 2-Port ISDN-U SIC

Chapter 2 Smart Interface Cards

Attribute Description

RJ45 (Router 2-Port ISDN-S/T SIC)

Connector type

RJ45 (Router 2-Port ISDN-U SIC, compatible with RJ11)

1

Number of connectors

2

Cable type Telephone cable with ferrite core

Protocol standard ITU-T I.430, Q.921, Q.931 Recommendations

ISDN dial-up mode

Operating mode

ISDN leased line mode

ISDN

ISDN complementary services

Supported service

Multi-user number

Sub-address

Backup

2.3.4 Interface LEDs

Router 2-Port ISDN-S/T SIC and Router 2-Port ISDN-U SIC panels are shown in the
following figures:

2-10

3Com Router 5000 and Router 6000 v2.41
Module Guide

Figure 2-11 SIC-2BS panel

Figure 2-12 SIC-2BU panel

The status description of the LEDs is given in the following table:

Table 2-8 Description of the LEDs on SIC-BS and SIC-BU panels

LED Description

Chapter 2 Smart Interface Cards

B1

B2

ACT

OFF means B1 channel is idle. Blinking means B1 channel is occupied and

data communication is being conducted.

OFF means B2 channel is idle. Blinking means B2 channel is occupied and

data communication is being conducted.

OFF means deactivation. Blinking means activating process. ON means

active status.

OFF means the power to the SIC is disconnected (caused by the failure of

ON

power supply to the SIC and so on). ON means the SIC is normally

powered on.

 Note:

For ISDN, “active” describes the action or process that a terminal device synchronizes the network clock.

It belongs to the physical layer category. In order to decrease power consumption of exchange device

and etc., usually the terminals and network (LT port) should be “deactivated”.

2.3.5 Interface Cable

Both of Router 2-Port ISDN-S/T SIC and Router 2-Port ISDN-U SIC use the telephone

cable with ferrite core.

2-11

3Com Router 5000 and Router 6000 v2.41
Module Guide

Caution:

The relevant cables have been included in the standard configurations of Router 2-Port ISDN-S/T SIC

and Router 2-Port ISDN-U SIC.

2.3.6 Connecting Interface Cable

Caution:

z You should connect a cable to the port with the correct mark. Misplugging is prone to impair the

SIC/MIM and even damage the router.

z When using a telephone cable with ferrite core outdoors, you are recommended to install a special

lightning arrester on the input end of the cable in order to avoid lightning more effectively.

Chapter 2 Smart Interface Cards

If the SIC has been properly installed, follow these steps to connect the cable:

Step 1: Confirm the type of the ISDN line provided by your telecom service provider;

Step 2: Connect the cable;

z For Router 2-Port ISDN-S/T SIC

If the ISDN U interface is adopted for the line, use NT1 for conversion. The connecting

procedure is to insert one end of the telephone cable with ferrite core into the BRI S/T
interface of Router 2-Port ISDN-S/T SIC and the other end into the NT1.

If the line uses the ISDN S/T interface, directly insert the cable with ferrite core into the

BRI S/T interface of the Router 2-Port ISDN-S/T SIC and the other end into the ISDN
S/T interface.

z For Router 2-Port ISDN-U SIC

If the ISDN U interface is adopted for the line, directly insert the cable with ferrite core

into the BRI U interface of the Router 2-Port ISDN-U SIC and the other end into the
ISDN U interface.

If the line uses the ISDN S/T interface, contact the agent and replace the SIC with
Router 2-Port ISDN-S/T SIC.

Step 3: Power on the Router, and check the corresponding Related LED on the front

panel of the Router. If the LED is ON, it indicates that the SIC has passed the self-test

and can operate normally. If the LED is OFF, it indicates the failure of the self-test. In
such a case, please contact your agent.

2-12

3Com Router 5000 and Router 6000 v2.41
Module Guide

Step 4: Check the LED on the SIC panel: ON means the SIC is normally powered on.

If it is OFF, contact the agent.

Chapter 2 Smart Interface Cards

2.4 Router 1-Port Fractional E1 SIC

2.4.1 Introduction

1-port channelized E1/cE1/PRI compatible interface card supports:

z Transmission/Receiving and handling of E1 data streams;
z CE1 (channelized E1) access;
z ISDN PRI function;
z Remote loopback and local loopback functions, facilitating fault test and location.

It is possible to use the card for multiple purposes through different configurations.

Following are the differences between SIC-EPRI and 1-port Fractional E1 interface

card (Router 1-Port Fractional E1 SIC):

z FE1 mode of Router 1-Port Fractional E1 SIC can support only one channel

bundle (the rate is n x 64kbps, n=1-31), while the 31 channels can be grouped

into multiple arbitrary bundles by SIC-EPRI;

z Router 1-Port Fractional E1 SIC does not support PRI mode.

2.4.2 Appearance

Figure 2-13 Router 1-Port Fractional E1 SIC

2.4.3 Interface Attributes

The interface attributes of Router 1-Port Fractional E1 SIC are given in the following
table:

2-13

3Com Router 5000 and Router 6000 v2.41
Module Guide

Table 2-9 Interface attributes of Router 1-Port Fractional E1 SIC

Attribute Description

Connector type DB15

Number of connectors 1

Interface standard G.703, G.704

Interface rate 2.048Mbps

75-ohm non-balanced coaxial cable (DB15 to BNC)

Chapter 2 Smart Interface Cards

Cable type

Operating mode

Supported service

2.4.4 DIP Switch

E1/cE1/PRI interface is compatible with both 75-ohm impedance and 120-ohm

impedance. The interface matches different types of impedance through an 8BIT DIP

switch. By default, all the 8 positions of the DIP switch are ON, as shown in the
following figure:

120-ohm balanced twisted-pair cable (DB15 to RJ45)

Coaxial connector, network interface connector and 75-ohm to 120-ohm
adapter

E1

cE1, ISDN PRI (supported by SIC-EPRI only )

FE1(supported by Router 1-Port Fractional E1 SIC only)

Backup

Terminal access

ISDN (supported by SIC-EPRI only)

2-14

3Com Router 5000 and Router 6000 v2.41
Module Guide

on

1

2

3

4

5

6

7

8

Figure 2-14 Default setting of the DIP switches

8BIT description and settings of DIP switch are given in the following table:

Table 2-10 Description and settings of the internal DIP switch of SIC-ERRI/Router 1-Port Fractional E1

SIC

Chapter 2 Smart Interface Cards

DIP switch Description

75 -ohm

impedance

120 -ohm impedance

1BIT ON OFF

2BIT ON OFF

Switch for

3BIT ON OFF

75-ohm/120-ohm
options

4BIT ON OFF

5BIT

ON OFF

OFF: RxRing

grounding via

6BIT

Switch for RxRing

grounding mode options

capacitor

-

ON: RxRing directly
grounding

ON: RxShield grounding

7BIT

Switch for RxShield
grounding options

-

OFF: RxShield
ungrounding

2-15

3Com Router 5000 and Router 6000 v2.41
Module Guide

Chapter 2 Smart Interface Cards

DIP switch Description

8BIT

Caution:

z When setting internal DIP switch, you are recommended to: turn ON all BITs from 1 to 8 when a

75-ohm cable is connected. Turn OFF all BITs from 1 to 8 when a 120-ohm cable is connected;

z The default configuration of internal DIP switch is that all the 8 positions of the BIT switch are ON,

that is, the E1 interface impedance is 75-ohm.

2.4.5 Interface LEDs

Switch for RxShield
grounding options

impedance

-

75 -ohm

120 -ohm impedance

OFF: RxShield grounding
via capacitor

ON: RxShield directly
grounding

Router 1-Port Fractional E1 SIC panel is shown in the following figure:

Fractional E1

Figure 2-15 Router 1-Port Fractional E1 SIC panel

The status description of the LEDs is given in the following table:

Table 2-11 Description of the LEDs on Router 1-Port Fractional E1 SIC panel

LED Description

OFF means the link is not connected. ON means the link is connected and

LINK

can correctly receive carrier (E1 mode) or frame synchronous signals

(cE1/PRI or FE1).

ACT

OFF means no data is being transmitted or received; blinking means data is

being received or/and transmitted.

2-16

3Com Router 5000 and Router 6000 v2.41
Module Guide

2.4.6 Interface Cable

Interface cables for Router 1-Port Fractional E1 SIC are standard E1 G.703 cables. E1

G.703 cables have two types: 75-ohm non-balanced coaxial cables and 120-ohm
balanced twisted pair cables, shown as follows:

z 75-ohm non-balanced coaxial cable

Enlarged A side

Pos.1

DB15 Male

Magnetic core

Label

Chapter 2 Smart Interface Cards

BNC connector

Cable tie

A

Pos.15

HUAWEI

Hot-shrinkable tube

Figure 2-16 E1 G.703 75-ohm non-balanced coaxial cable

75-ohm non-balanced coaxial cable connects Router 1-Port Fractional E1 SIC with the

DB15 connector and the network end with the BNC connector.

 Note:

A pair of coaxial connectors are available for extending the E1 cable. Both ends of the connectors are

BNC receptacles that can be used to connect two 75-ohm non-balanced coaxial cables with BNC

connectors.

z 120-ohm balanced twisted pair cable

Figure 2-17 E1 G.703 120-ohm balanced twisted pair cable

120-ohm balanced twisted pair cable connects Router 1-Port Fractional E1 SIC with

the DB15 connector and network end with the RJ45 connector.

2-17

3Com Router 5000 and Router 6000 v2.41
Module Guide

 Note:

A network interface connector is available for extending the E1 cable. Both ends of the connector are

RJ45 jacks that can be used to connect two 120-ohm balanced twisted pair cables.

In addition, a 75-ohm to 120-ohm adapter is available.

For the pinouts of E1 cables, see Low-End and Mid-Range Series Routers Cable
Manual.

Caution:

E1 cable, coaxial connector, network interface connector and 75ohm-to-120ohm adapter are optional,

which must be ordered together with Router 1-Port Fractional E1 SIC. Otherwise they will not be

supplied.

Chapter 2 Smart Interface Cards

2.4.7 Connecting Interface Cable

Caution:

When using E1 cable outdoors, you are recommended to install a special lightning arrester on the input

end of the cable in order to avoid lightning more effectively.

If the SIC has been properly installed, follow these steps to connect the cable:

Step 1: Check the type of E1 cable and correctly set the DIP switch (the ex-factory
setting of E1/cE1/PRI interface impedance is 75-ohm);

Step 2: Connect the DB15 connector of E1 cable to Router 1-Port Fractional E1 SIC;

Step 3: Connect the other end of the E1 cable to the corresponding network device:

1) When the E1 cable is a 75-ohm unbalanced coaxial cable:

z Directly connect the BNC connector of the cable to the remote equipment if there

is no need for extension, or

z Connect the BNC connector of the cable to the coaxial connector and the other

end of the coaxial connector to the remote network equipment through a 75-ohm
E1 trunk cable, if cable extension is needed.

2-18

3Com Router 5000 and Router 6000 v2.41
Module Guide

Caution:

The wire marked TX in the E1 cable should be connected to the peer wire marked RX and the wire

marked RX should be connected to the peer wire marked TX.

DB-15

Chapter 2 Smart Interface Cards

Network
devices
such as DDN

Router

Coaxial connector

75-ohm non-balanced coaxial cable

BNC

BNC

75-ohm E1 trunk cable

Figure 2-18 Extending an E1 75-ohm non-balanced coaxial cable

If the remote device has 120-ohm interface, it is needed to use a 75-ohm-to-120-ohm
adapter or use a 120-ohm cable.

2) When the E1 cable is a 120-ohm balanced twisted pair cable:

z Directly connect the RJ45 connector of the cable to the RJ45 port of the remote

equipment, if there is no need to extend the E1 cable, or

z Connect the RJ45 connector of the cable to the network connector and the other

end of the network connector to the network equipment through a 120-ohm E1
trunk cable, if cable extension is needed.

DB-15

Network
devices such
as DDN

Router

Network interface connector

120-ohm balanced twisted pair

RJ-45

RJ-45

120-ohm E1 trunk cable

Figure 2-19 Extending an E1 120-ohm balanced twisted pair cable

Step 4: Power on the Router, and check the LEDs of the corresponding slot on the

front panel: ON means that the SIC is operating normally and OFF means that the

Power-On Self-Test (POST) of the SIC has failed. In the latter case, please contact
your agent;

2-19

3Com Router 5000 and Router 6000 v2.41
Module Guide

Step 5: Check the status of LINK LED on the Router 1-Port Fractional E1 SIC panel:

ON means the link is connected and OFF means the link is not connected. In the latter
case, check the line.

Chapter 2 Smart Interface Cards

2.5 Router 1-Port Fractional T1 SIC

2.5.1 Introduction

1-port channelized T1/cT1/PRI compatible interface card supports:

z Transmission/Receiving and handling of T1 data streams;
z cT1 (channel T1) access;
z ISDN PRI function;

z Remote loopback and local loopback, facilitating the effective and flexible

debugging.

It is possible to use the card for multiple purposes through different configurations.

Following are the differences between and 1-port Fractional T1 interface card (Router
1-Port Fractional T1 SIC):

z FT1 mode of Router 1-Port Fractional T1 SIC can support only one channel

bundle (the rate is n x 56 kbps, n=1-24), while the 24 channels can be grouped

into multiple arbitrary bundles by SIC-TPRI.

z Router 1-Port Fractional T1 SIC does not support PRI mode.

2.5.2 Appearance

Figure 2-20 Router 1-Port Fractional T1 SIC

2.5.3 Interface Attributes

The interface attributes of Router 1-Port Fractional T1 SIC are given in the following
table:

2-20

3Com Router 5000 and Router 6000 v2.41
Module Guide

Table 2-12 Interface attributes of Router 1-Port Fractional T1 SIC

Attribute Description

Connector type RJ45

Number of connectors 1

Interface standard G.703/T1.102, G.704

Interface rate 1.544Mbps

Cable type T1 cable (100-ohm standard shielded network cable)

Chapter 2 Smart Interface Cards

Operating mode

Supported service

2.5.4 Interface LEDs

Router 1-Port Fractional T1 SIC panel is shown in the following figure:

Figure 2-21 Router 1-Port Fractional T1 SIC panel

cT1, ISDN PRI

FT1(supported by Router 1-Port Fractional T1 SIC only)

Backup

Terminal access

ISDN (supported by SIC-TPRI ony)

Fractional T1

The status description of the LEDs is given in the following table:

Table 2-13 Description of the LEDs on Router 1-Port Fractional T1 SIC panel

LED Description

OFF means the link is not connected. ON means the link is

LINK

connected and frame synchronization signal can be correctly

received.

ACT

OFF means no data is being transmitted or received; blinking

means data is being received or/and transmitted.

2-21

3Com Router 5000 and Router 6000 v2.41
Module Guide

2.5.5 Interface Cable

Router 1-Port Fractional T1 SIC interface cable is 100-ohm standard shielded network

cable that has RJ45 connectors at both ends. The following figure illustrates a Router

1-Port Fractional T1 SIC interface cable:

Figure 2-22 T1 cable

For the pinouts of T1 cable, see Low-End and Mid-Range Series Routers Cable
Manual.

Chapter 2 Smart Interface Cards

Caution:

Relevant cables are included in the standard shipment package of Router 1-Port Fractional T1 SIC.

2.5.6 Connecting Interface Cable

Caution:

z You should connect a cable to the port with the correct mark. Misplugging is prone to impair the

SIC/MIM and even damage the router.

z When using T1 cable outdoors, you are recommended to install a special lightning arrester on the

input end of the cable so as to avoid lightning more effectively.

If the SIC has been properly installed, follow these steps to connect the cable:

Step 1: Connect one end of the T1 cable to the RJ45 port of Router 1-Port Fractional
T1 SIC;

Step 2: Connect the other end of the T1 cable to the relevant equipment;

2-22

3Com Router 5000 and Router 6000 v2.41
Module Guide

Step 3: Power on the Router, and check the LEDs of the corresponding slot on the

front panel: ON means that the SIC is operating normally and OFF means that the
POST of the SIC has failed. In the latter case, please contact your agent.

Step 4: Check the status of LINK LED on the Router 1-Port Fractional T1 SIC panel:

ON means the link is connected and OFF means the link is not connected. In the latter
case, check the line.

Chapter 2 Smart Interface Cards

2.6 Router 1-Port Analog Modem SIC

2.6.1 Introduction

1/2-port analog modem interface card (Router 1-Port Analog Modem SIC) integrates

the functions of asynchronous interface and external modem, that is, allowing 1/2
channel(s) of remote modem subscribers to directly access the Router. They support:

z Data rate of 56 kbps.

z Accessing and handling analog signals and transmitting the processed data to

the Router host through the serial interface bus. And also, processing the data

received from the host and then transmitting them to the PSTN via the telephone
port.

2.6.2 Appearance

Router 1-Port Analog Modem SIC and are shown in the following figures:

Figure 2-23 Router 1-Port Analog Modem SIC

2.6.3 Interface Attributes

The interface attributes of Router 1-Port Analog Modem SIC are given in the following
table:

Table 2-14 Interface attributes of Router 1-Port Analog Modem SIC

Attribute Description

Connector type RJ11

2-23

3Com Router 5000 and Router 6000 v2.41
Module Guide

Attribute Description

Chapter 2 Smart Interface Cards

Number of connectors

Cable type Telephone cable with ferrite core

Maximum speed 56kbps

Supported standard

Supported service

2.6.4 Interface LEDs

Figure 2-24 Router 1-Port Analog Modem SIC panel

1 (Router 1-Port Analog Modem SIC)

2 ()

ITU-T V.90, V.34 (33.6 kbps), V.FC, V.32 bis, V.32, V.22 bis,
V.22A/B, V.23, V.21, Bell 212A a, Bell 103.

Modem dial-up

Table 2-15 Description of the LEDs on Router 1-Port Analog Modem SIC panel

LED Description

LINK

ACT

2.6.5 Interface Cable

The connection cables for Router 1-Port Analog Modem SIC are telephone cables with
ferrite core. Both ends of the cables are RJ11 connectors. For cable pinouts, refer to

Low-End and Mid-Range Series Routers Cable Manual.

Caution:

OFF means the link is idle. ON means the connection has been established.

Blinking means the connection is being set up.

OFF means the link is idle. Blinking means data is being transmitted or

received.

Relevant cables are included in the standard shipment package of Router 1-Port Analog Modem SIC.

2-24

3Com Router 5000 and Router 6000 v2.41
Module Guide

2.6.6 Connecting Interface Cable

Caution:

z You should connect a cable to the port with the correct mark. Misplugging is prone to impair the

SIC/MIM and even damage the router.

z You are recommended to install a special lightning arrester on the input end of the telephone line in

order to avoid the lightning effects more efficiently.

If the SIC has been properly installed, follow these steps to connect the cable:

Step 1: Insert the end with ferrite core into one LINE port of Router 1-Port Analog
Modem SIC;

Chapter 2 Smart Interface Cards

Step 2: Plug the other end of the cable into the telephone wall jack;

Step 3: Power on the Router, and check the LEDs of the corresponding slot on the

front panel: ON means that the SIC is operating normally and OFF means that the
POST of the SIC has failed. In the latter case, please contact your agent.

2.7 Router 1-Port FXS SIC/FXO SIC and Router 2-Port FXS SIC/FXO SIC

2.7.1 Introduction

1/2-port voice subscriber circuit interface card (Router 1 or 2-Port FXS SIC) and

1/2-port voice AT0 analog trunk interface card (Router 1 or 2-Port FXO SIC) serve to

access and handle 1/2 channel(s) of analog voice signals over data communication
networks. The differences between FXS SIC and FXO SIC are listed below:

z FXS SIC cards are analog subscriber line cards that provide ordinary analog

z FXO SIC cards are loop trunk cards that provide access of common subscriber

telephone and fax access and also can connect AT0 loop trunks of exchanges;

lines of exchanges.

2-25

3Com Router 5000 and Router 6000 v2.41
Module Guide

Caution:

While using FXS SIC/FXO SIC, you must ensure that the 3Com Routers can be connected to IP

networks or other WANs.

2.7.2 Appearance

z Router 1-Port FXS/FXO SIC

Chapter 2 Smart Interface Cards

Figure 2-25 Router 1-Port FXS/FXO SIC

z Router 2-Port FXS/FXO SIC

Figure 2-26 Router 2-Port FXS/FXO SIC

2.7.3 Interface Attributes

The interface attributes of Router 1-Port FXS/FXO SIC and Router 2-Port FXS/FXO
SIC are given in the following table:

2-26

3Com Router 5000 and Router 6000 v2.41
Module Guide

Table 2-16 Interface attributes of Router 1-Port FXS/FXO SIC and Router 2-Port FXS/FXO SIC

Attribute Description

Connector type RJ11

Chapter 2 Smart Interface Cards

Number of connectors

Interface standard

Cable type Telephone cable with ferrite core.

Dialing mode Supports DTMF, not supports pulse dial-up.

Bandwidth 300 to 3400Hz

2.7.4 Interface LEDs

z Router 1-Port FXS/FXO SIC panel

1 (Router 1-Port FXS/FXO SIC)

2 (Router 2-Port FXS/FXO SIC)

Subscriber circuit interface (Router 1 or 2-Port FXS SIC)

compliant with ITU Q.512.

Loop trunk interface (SIC-1FXO/SIC-2FXO) compliant with ITU

Q.552.

Over-current and over-voltage protection compliant with ITU

K.20

Figure 2-27 Router 1-Port FXS SIC panel

Figure 2-28 Router 1-Port FXO SIC panel

z Router 2-Port FXS/FXO SIC panel

2-27

3Com Router 5000 and Router 6000 v2.41
Module Guide

Figure 2-29 Router 2-Port FXS SIC panel

Figure 2-30 Router 2-Port FXO SIC panel

The status description of the LEDs of Router 1-Port FXS/FXO SIC and Router 2- Port
FXS/FXO SIC is shown in the following table:

Table 2-17 Description of the LEDs on Router 1-Port FXS/FXO SIC and Router 2-Port FXS/FXO SIC

panels

Chapter 2 Smart Interface Cards

LED Description

LINK

ACT

2.7.5 Interface Cable

Connection cables for Router 1-Port FXS/FXO SIC and Router 2- Port FXS/FXO SIC

are telephone cables with ferrite core. Both ends of the cables are RJ11 connectors.

For cable pinouts, see Low-End and Mid-Range Series Routers Cable Manual.

Caution:

The standard shipment package of Router 1-Port FXS/FXO SIC and Router 2-Port FXS/FXO SIC

includes a ferrite core telephone cable.

OFF means the link is idle. ON means the link is being occupied for call

connection.

OFF means the link is idle. ON means the link is being occupied for
communication.

2.7.6 Connecting Interface Cable

2-28

3Com Router 5000 and Router 6000 v2.41
Module Guide

Caution:

z You should connect a cable to the port with the correct mark. Misplugging is prone to impair the

SIC/MIM and even damage the router.

z When the telephone cable is used outdoors, it is recommended that users install a special lightning

arrester on the input end of the cable in order to avoid the lightning effects more efficiently.

z One end of the telephone cable has a ferrite core. To ensure the compatibility of the Router, users

should connect the end with the ferrite core to the Router.

If the SIC is properly installed, follow these steps to connect the cable:

Step 1: Connect the end with the ferrite core to a RJ11 port of FXS/FXO SIC ;

Step 2: Insert the other end to

z a telephone or fax or the AT0 loop trunk if a Router 1 or 2-Port FXS SIC is

installed;

z a subscriber line of exchange if a Router 1 or 2-Port FXO SIC is installed;

Chapter 2 Smart Interface Cards

Step 3: Power on the Router, and check the LEDs of the corresponding slot on the

front panel: ON means that the SIC is operating normally and OFF means that the

POST of the SIC has failed. In the latter case, please contact your agent.

2.8 Router 1-Port SAE SIC

2.8.1 Introduction

Router 1-Port SAE SIC, 1-port enhanced high-speed sync/async serial interface card,

provides functions similar to SA, but its serial interfaces support more protocols, such

as RS449, X.21, and RS530.

2.8.2 Interface Attributes

The interface attributes of the Router 1-Port SAE SIC are given in the following table:

Table 2-18 Interface attributes of the Router 1-Port SAE SIC

Attribute

Description

Synchronous Asynchronous

Connector DB-28

Number of connectors 1

Interface standard and

V.24 V.35, RS449, X.21, RS530 RS232

2-29

3Com Router 5000 and Router 6000 v2.41
Module Guide

Attribute

Chapter 2 Smart Interface Cards

Description

Synchronous Asynchronous

operating mode

Minimum baud rate

(bps)

Maximum baud rate

(bps)

Cable

DTE, DCE DTE, DCE

1200 1200 300

64 k 2.048 M 115.2

V.24 (RS232) DTE cable

V.24 (RS232) DCE cable

V.35 DTE cable

V.35 DCE cable

X.21 DTE cable

X.21 DCE cable

RS449 DTE cable

RS449 DCE cable

RS530 DTE cable

Services supported

2.8.3 Interface LEDs

Router 1-Port SAE SIC panel is shown in the following figure:

RS530 DCE cable

1) DDN leased line

2) Terminal access service

1) Dialup through

modems

2) Backup

3) Async leased

line

4) Terminal access

Figure 2-31 Router 1-Port SAE SIC panel

2-30

3Com Router 5000 and Router 6000 v2.41
Module Guide

Description of the LEDs on Router 1-Port SAE SIC panel is given in the following table:

Table 2-19 LEDs on Router 1-Port SAE SIC panel

LED Description

LINK OFF means no link is present; ON means a link is present.

Chapter 2 Smart Interface Cards

ACT

2.8.4 Interface Cable

The Router 1-Port SAE SIC uses a synchronous/asynchronous serial interface cable

with DB-28 connectors for connection.

Before connecting to a port on the Router 1-Port SAE SIC, confirm the line properties

of the interface to select an appropriate cable from the following cable options:

z V.24 (RS232) DTE cable: DB-25 (male) connector at the network end

z V.24 (RS232) DCE cable: DB-25 (female) connector at the network end

z V.35 DTE cable: 34PIN (male) connector at the network end

z V.35 DCE cable: 34PIN (female) connector at the network end

z X.21 DTE cable: DB-15 (male) connector at the network end

z X.21 DCE cable: DB-15 (female) connector at the network end

z RS449 DTE cable: DB-37 (male) connector at the network end

z RS449 DCE cable: DB-37 (female) connector at the network end

z RS530 DTE cable: DB-25 (male) connector at the network end

z RS530 DCE cable: DB-25 (female) connector at the network end

OFF means no data is being transmitted or received; blinking

means data is being received or/and transmitted.

At one end of these cables is a DB-28 connector and at the other end is the connector

that varies with the port at the network side.

z V.24 DTE cable

Figure 2-32 V24 DTE cable

z V.24 DCE cable

2-31

3Com Router 5000 and Router 6000 v2.41
Module Guide

Figure 2-33 V.24 DCE cable

z V.35 DTE cable

Chapter 2 Smart Interface Cards

Figure 2-34 V.35 DTE cable

z V.35 DCE cable

Figure 2-35 V.35 DCE cable

z X.21 DTE cable

Figure 2-36 X.21 DTE cable

z X.21 DCE cable

2-32

3Com Router 5000 and Router 6000 v2.41
Module Guide

Figure 2-37 X.21 DCE cable

z RS449 DTE cable

Chapter 2 Smart Interface Cards

Figure 2-38 RS449 DTE cable

z RS449 DCE cable

Figure 2-39 RS449 DCE cable

z RS530 DTE cable

Figure 2-40 RS530 DTE cable

2-33

3Com Router 5000 and Router 6000 v2.41
Module Guide

z RS530 DCE cable

Figure 2-41 RS530 DCE cable

 Note:

These cables are optional items. You need to select one when purchasing a Router

1-Port SAE SIC card; otherwise, the cable is not provided.

Chapter 2 Smart Interface Cards

2-34

3Com Router 5000 and Router 6000 v2.41
Module Guide

Multifunctional Interface Modules (Router 5000)

Chapter 3

Chapter 3 Multifunctional Interface Modules

(Router 5000)

3.1 Router 2-Port FXS/FXO/E&M MIM Modules & Router 4-Port 4FXS/4FXO/4E&M MIM Modules

3.1.1 Introduction

2/4-port voice subscriber circuit interface module (Router 2 or 4-Port FXS MIM) serves

to access and handle 2/4 channels of ordinary analog phone, fax, or AT0 loop trunk of

telephone exchange.

2/4-port voice AT0 analog trunk interface module (Router 2 or 4-Port FXO MIM) serves

to access and handle 2/4 channels of common user lines of telephone exchange.

2/4-port voice E&M analog trunk interface module (Router 2 or 4-Port E&M MIM)

serves to access and handle 2/4 channels of E&M analog trunks.

These modules make it possible to transfer voice signals over data communication

networks.

Caution:

When connecting a voice MIM, make sure that 3Com 5000 Family Routers can be connected to an IP

network or other LAN.

3.1.2 Appearance

I. Router 2-Port FXS/FXO/E&M MIM module

The appearance of Router 2-Port FXS/FXO/E&M MIM Module is shown in the

following figure:

3-1

3Com Router 5000 and Router 6000 v2.41
Module Guide

Figure 3-1 Router 2-Port FXS/FXO/E&M MIM MOdule

II. Router 4-Port FXS/FXO/E&M MIM module

The appearance of Router 4-Port FXS/FXO/E&M is shown in the following figure:

Chapter 3

Multifunctional Interface Modules (Router 5000)

Figure 3-2 Router 4-Port FXS/FXO/E&M

3.1.3 Interface Attributes

The interface attributes of FXS/FXO/E&M modules are given in the following table:

Table 3-1 Interface attributes of 2FXS/2FXO/2E&M and 4FXS/4FXO/4E&M and 8FXS

Attribute Description

Connector RJ45

Number of

connectors

Cable

2 (Router 2-Port FXS/FXO/E&M

MIM module)

4 (Router 4-Port FXS/FXO/E&M

MIM module)

Telephone cable with ferrite core

E&M trunk (for E&M module, which should be made by users depending on

3-2

3Com Router 5000 and Router 6000 v2.41
Module Guide

Attribute Description

the actual needs at the site.)

ITU Q.512-compliant subscriber circuit interface (Router 2-Port FXS)

ITU Q.552-comliant loop trunk interface (Router 2 or 4-Port FXO)

Chapter 3

Multifunctional Interface Modules (Router 5000)

Interface standard

Dial-up mode DTMF (Dual-Tone Multi-Frequency) but not pulse dial-up

Bandwidth 300 to 3400 Hz

3.1.4 Interface LEDs

Voice MIM panels are shown in the following figures:

Figure 3-3 Router 2-Port FXS panel

G.712-compliant E&M trunk interface (Router 2 or 4 -Port E&M), E&M

interface (supporting Bell type I, II, III, V, and support 2-wire and 4-wire).

ITU K.20-compliant overcurrent and overvoltage protection

LINK
ACT

Figure 3-4 2 Router 2-Port FXO panel

Figure 3-5 Router 2-Port E&M panel

Figure 3-6 Router 4-Port FXS panel

LINK

ACT

LINK

ACT

LINK

ACT

3-3

3Com Router 5000 and Router 6000 v2.41
Module Guide

Figure 3-7 Router 4-Port FXO panel

Figure 3-8 Router 4-Port E&M panel

Table 3-2 Description of the LEDs on voice MIM panel

LED Description

LINK OFF means no link is present; ON means a link is present.

Chapter 3

Multifunctional Interface Modules (Router 5000)

LI NK
ACT

LINK

ACT

ACT OFF means the channel is idle. ON means there is call activity.

3.1.5 Interface Cable

External interfaces of Router 2-Port FXS/FXO/E&M module and Router 4-Port

FXS/FXO/E&M module are standard RJ45 connectors.

Interface cables for Router 2-Port FXS/FXO and Router 4-Port FXS/FXO are

telephone cables with ferrite core, and both ends of which are RJ11 connectors.

Cables for Router 2 and 4-Port E&M need to be selected according to the type of

telephone exchange to be connected.

 Note:

z To ensure the consistency of the receptacles on MIMs, RJ45 receptacles are used as external

interfaces for FXS/FXO/E&M modules. Because they are compatible with RJ11 connectors, they can

be used as normal.

z Telephone cables have been included in the standard shipment package of Router 2-Port FXS/FXO,

Router 4-Port FXS/FXO modules.

I. Interface cable of FXS/FXO modules

Connection cables for Router 2-Port FXS/FXO and Router 4-Port FXS/FXO are

telephone cables with ferrite core.

3-4

3Com Router 5000 and Router 6000 v2.41
Module Guide

II. Interface cable of E&M modules

E&M modules of 3Com 5000 Family Routers support Bell I, II, III, V switches, and

2-wire & 4-wire voice signals.

It is recommended to use Bell V 4-wire voice signal to communicate with the Router in

practice.

The sequence of E&M RJ45 pins is shown in the following figure, numbered 1 to 8

from left to right:

Figure 3-9 Sequence of RJ45 pins

Chapter 3

Multifunctional Interface Modules (Router 5000)

When connection is made in Bell V 4-wire mode, the pinouts of RJ45 receptacles at

router side and at the switch side are shown in the following figure:

Router

on-hook

detect

off-hook

-48 V

-48 V

4- wire

voice signal

-48 V

4- wire

voice signal

PBX

off-hook

detect

on-hook

E

M

T0

R0

T1

R1

T0

R0

T1

R1

M

on-hook

E

6

3

5

4

7

2

Figure 3-10 E&M interface cable (Bell V 4-wire)

3-5

3Com Router 5000 and Router 6000 v2.41
Module Guide

Table 3-3 Pinouts of E&M interface cable (Bell V 4-wire)

Router side

RJ45 Pin RJ45 interface signal

1 SB (negative power supply) -

2 E M

3 RING0 RING0

4 RING1 RING1

5 TIP1 TIP1

6 TIP0 TIP0

7 M E

Chapter 3

Multifunctional Interface Modules (Router 5000)

Signal at switch side (Bell V 4-wire)

8 SG (negative power supply

ground)

 Note:

z Interface cables of Router 2-Port FXS/FXO and Router 4-Port FXS/FXO modules are magnetic loop

lines with a ferrite core at one end. To ensure EMC of the Router, connect the end with ferrite core to

the Router.

z Because it is hard to determine the type of the switch to be connected and its connectors, interface

cables of Router 2 and 4-Port E&M/E&M modules have to be prepared according to the on-spot

conditions or by the user. To ensure the EMC of the Router, install a ferrite core near the connector

of the prepared E&M module interface cable by the router side.

3.1.6 Connecting Interface Cable

-

3-6

3Com Router 5000 and Router 6000 v2.41
Module Guide

Caution:

z Some measures are taken to protect voice modules. Still, you are recommended to install a special

lightning arrester at the input end of each connection cable to obtain better lightning protection effect

when the cable is led outdoors;

z Read the mark identifying a port before you connect a cable to it, making sure it is the correct port.

Wrong connection tends to damage interface modules and even the Router.

z As provisioned by Bell V, cables for FXS/FXO/E&M modules do not provide PGND wire. For this

reason, a loop should be formed via the earth ground between the Router and the connected switch.

In practice, the PGND wire of the switch can be connected to the chassis of the Router;

z To ensure the EMC of the whole Router, you should connect the end of the cable with ferrite core to

the Router.

Step 1: Plug one end of the cable into the RJ45 port on Router 2-Port FXS/FXO/E&M;

Step 2: Connect the other end of the cable to:

Chapter 3

Multifunctional Interface Modules (Router 5000)

z Telephone set, fax or AT0 loop trunk of telephone exchange, if you have installed

an FXS module;

z Subscriber line of telephone exchange, if you have installed an FXO module;

z E&M trunk of telephone exchange, if you have installed an E&M module;

Step 3: Power on the Router and check the LEDs for the slot on the front panel of the

Router. Several seconds after the MIM is initialized, all the LEDs will blink once,

meaning it has completed POST and is ready for work. If it fails to pass POST, the

LEDs for it will keep OFF. In this case, contact your agent.

3.2 Router E1 Voice Module

3.2.1 Introduction

Router E1 Voice Module can handle dense voice signals in VoIP system. It can carry

out the VoIP function over E1 lines and transmit both voice and data signals over E1

lines at the same time.

Router E1 Voice Module is structured in the form of board plus daughter card. It

provides a CE1/PRI port, allowing the access of 30 channels of voice signals.

3.2.2 Appearance

The appearance of Router E1 Voice Module is shown in the following figure:

3-7

3Com Router 5000 and Router 6000 v2.41
Module Guide

Figure 3-11 Router E1Voice Module

3.2.3 Interface Attributes

The interface attributes of Router E1 Voice Module are given in the following table.

Chapter 3

Multifunctional Interface Modules (Router 5000)

Table 3-4 Interface attributes of Router E1 Voice Module

Attribute Description

Connector DB15

Number of connectors 1

1) E1

Operating mode

2) CE1

3) ISDN PRI

Interface rate 2.048Mbps

E1 120-ohm balanced twisted pair cable

Cable

75ohm-to-120ohm adapter

Network interface connector

1) R2 signaling

2) DSS1 signaling

Services supported

3) IP Fax

3.2.4 Interface LEDs

Router E1 Voice Module panel is shown in the following figure:

4) General VoIP features in 3COM Router SOFTWARE

3-8

3Com Router 5000 and Router 6000 v2.41
Module Guide

Figure 3-12 Router E1Voice Module panel

Description of the LEDs on Router E1 Voice Module panel is given in the following

table:

Table 3-5 Description of the LEDs on Router E1Voice Module panel

LED Description

LINK OFF means no link is present; ON means a link is present.

Chapter 3

Multifunctional Interface Modules (Router 5000)

ACTIVE

3.2.5 Interface Cable

Router E1 Voice Module interface cables are G.703-compliant 120-ohm balanced

twisted pair cables. At one end of the cable is a DB-15 male connector for the

connection to the Router, and at the other end is an RJ-45 connector for the

connection to the network.

Figure 3-13 120-ohm balanced twisted pair cable

OFF means no data is being transmitted or received. Blinking means there is

data being transmitted or received.

If the cable with the resistance of 75-ohm is needed, a 75-ohm-to-120-ohm cable

adapter (one end is BNC connector and the other end is RJ45 connector) which is

illustrated in the following figure can be installed.

3-9

3Com Router 5000 and Router 6000 v2.41
Module Guide

Figure 3-14 75-ohm-to120-ohm adapter (with BNC connector)

Caution:

z For the convenience of extending the connection of E1 120-ohm balanced twisted pair cable, you

can use network interface connector.

z E1 120-ohm balanced twisted pair cable, network interface connector, 75-ohm-to-120-ohm adapter

are optional accessories, and you need to make a selection when purchasing an E1VI module;

otherwise, they are not provided.

Chapter 3

Multifunctional Interface Modules (Router 5000)

3.2.6 Connecting Interface Cable

Caution:

z Some measures are taken to protect Router E1 Voice Module. Still, you are recommended to install

a special lightning arrester at the input end of its connection cable to obtain better lightning

protection when the cable is led outdoors;

z Read the mark identifying a port before you connect a cable to it, making sure it is the correct port.

Wrong connection tends to damage the MIM and even the Router.

Step 1: Plug the DB15 connector of the cable into the DB15 port on the Router E1

Voice Module module and fasten the screws;

Step 2: Connect the RJ45 connector of the cable to:

z The peer device directly, if the resistance of the port to be connected is 120-ohm,

and there is no need to extend the cable;

3-10

3Com Router 5000 and Router 6000 v2.41
Module Guide

z A network interface connector and then the peer device using another E1

120-ohm balanced twisted pair cable, if the resistance of the port to be connected

is 120-ohm, and there is a need to extend the cable, as illustrated in the following

figure.

DB -15

Chapter 3

Multifunctional Interface Modules (Router 5000)

Router

120-ohm balanced

twisted pair cable

Network interface

connector

Figure 3-15 Extending E1 120-ohm balanced twisted pair cable

z The peer device using a 75ohm-to-120ohm adapter, if the resistance of the peer

device is 75-ohm;

Step 3: Power on the Router, and check the LEDs of the corresponding slot on the

front panel: ON means Router E1 Voice Module is operating normally and OFF means

the POST of Router E1 Voice Module has failed. In the latter case, please contact your

agent;

Step 4: Check the status of the LINK LED on the Router E1 Voice Module panel. It is

OFF when fault has occurred to the link. In this case, please check the link.

3.3 Router T1 Voice Module

RJ-45

RJ-45

120-ohm E1
trunk cable

Voice
Device

3.3.1 Introduction

Router T1 Voice Module can handle dense signals in VoIP systems. It can implement

the VoIP function over T1 lines and transmit voice and data signals over T1 lines at the

same time.

Router T1 Voice Module is structured in the form of board plus daughter card. It

provides a CT1/PRI port, allowing the access of 24 channels of voice signals.

3.3.2 Appearance

The appearance of Router T1 Voice Module is shown in the following figure:

3-11

3Com Router 5000 and Router 6000 v2.41
Module Guide

Figure 3-16 Router T1Voice Module

3.3.3 Interface Attributes

The interface attributes of Router T1 Voice Module are given in the following table:

Table 3-6 Interface attributes of Router T1 Voice Module

Attribute Description

Chapter 3

Multifunctional Interface Modules (Router 5000)

Connector DB15

Number of connectors 1

Cable

Operating mode

Interface rate 1.544Mbps

Supported services

3.3.4 Interface LEDs

Router T1 Voice Module cable (100-ohm balanced shielded twisted

pair cable)

Network interface connector

CT1

ISDN PRI

1) DSS1 signaling

2) IP fax

3) General VoIP features in 3COM Router SOFTWARE

Router T1 Voice Module panel is shown in the following figure:

3-12

3Com Router 5000 and Router 6000 v2.41
Module Guide

Figure 3-17 Router T1 Voice Module panel

Description of the LEDs on Router T1 Voice Module panel is given in the following

table.

Table 3-7 Description of the LEDs on Router T1Voice Module panel

LED Description

LINK OFF means no link is present; ON means a link is present.

Chapter 3

Multifunctional Interface Modules (Router 5000)

ACTIVE

3.3.5 Interface Cable

Router T1 Voice Module interface cables are 100-ohm balanced shielded twisted pairs.

At one end of each cable is a DB-15 male connector for the connection to a Router T1

Voice Module module, and at the other end is an RJ-45 connector for the connection

to the voice device, as shown in the following figure:

Figure 3-18 Router T1 Voice Module cable

OFF means no data is being transmitted or received; blinking means data is being

received or/and transmitted.

In addition, you may use a network interface connector to extend a Router T1 Voice

Module cable.

3-13

3Com Router 5000 and Router 6000 v2.41
Module Guide

Caution:

Both Router T1 Voice Module cable and network interface connector are optional accessories. You

should order them when ordering a Router T1 Voice Module. Otherwise, they will not be provided.

3.3.6 Connecting Interface Cable

Caution:

z Some measures are taken to protect Router T1 Voice Module. Still, you are recommended to install

a special lightning arrester at the input end of its connection cable to obtain better lightning

protection when the cable is led outdoors;

z Read the mark identifying a port before you connect a cable to it, making sure it is the correct port.

Wrong connection tends to damage interface modules and even the Router.

Chapter 3

Multifunctional Interface Modules (Router 5000)

Step 1: Insert one end of a Router T1 Voice Module cable into the DB15 port on the

Router T1 Voice Module;

Step 2: Connect the other end of the Router T1 Voice Module cable to:

z The peer device if the cable is long enough;

z A network interface connector and then the peer device using another Router T1

Voice Module cable, if it is not long enough, as shown in the following figure:

RJ45

Voice
device

Router

DB15

T1VI cable

Network interface connector

RJ45

Straight-through network cable

Figure 3-19 Extending a Router T1 Voice Module cable

Step 3: Power on the Router, and check the LEDs of the corresponding slot on the

front panel of the Router: ON means Router T1 Voice Module is operating normally

and OFF means the POST of Router T1 Voice Module has failed. In the latter case,

please contact your agent;

Step 4: Check the status of the LINK LED on the Router T1 Voice Module panel. It is

OFF when fault has occurred to the link. In this case, please check the link.

3-14

3Com Router 5000 and Router 6000 v2.41
Module Guide

3.4 NDEC Module

3.4.1 Introduction

Network Data Encryption Module (NDEC) supports IPSec protocol and speeds up the

encryption of IP packets by means of hardware, featuring high performance and high

reliability.

When NDEC module is inserted, the main board of the router handles IP packet

forwarding and implements the VPN with encryption features, and then the NDEC will

complete the task of encryption.

3.4.2 Appearance

The appearance of NDEC module is shown in the following figure.

Chapter 3

Multifunctional Interface Modules (Router 5000)

Figure 3-20 NDEC

3.4.3 Interface Attributes

The interface attributes of NDEC are given in the following table:

Table 3-8 Interface attributes of NDEC

Attribute Description

Protocol supported IPSec

The maximum number of concurrent IPSec

connections

Hardware algorithm

100

1) Key algorithm (DES, 3DES, AES, QC5, Blowfish,

Cast-128, SkipJack)

2) Authentication algorithm (MD5, SHA-1 hash

algorithm)

3-15

3Com Router 5000 and Router 6000 v2.41
Module Guide

3.4.4 Interface LEDs

NDEC panel is shown in the following figure:

Figure 3-21 NDEC panel

Table 3-9 Description of the LEDs on NDEC panel

LED Description

OFF: The module is not powered ON, the PSU has failed to operate or a

serious hardware fault has occurred.

Fast blinking (4Hz): The hardware initialization is not done yet:

Chapter 3

Multifunctional Interface Modules (Router 5000)

RUN

ACT

SPEED

DENY

Slowly blinking (2-second ON and 2-second OFF): The hardware initialization

is done, but the module has not entered the normal software initialization flow;

Normal blinking (1-second ON and 1-second OFF): The module is operating

normally;

Steady ON: The software initialization has failed and the service cannot be run

normally.

Fast blinking: The module is in the loading status.

Steady ON: Module loading has failed.

Fast blinking unsteadily: The module is operating normally, and the data is

being transmitted or received between the module and the host.

OFF: The module is operating normally, and there is no data being transmitted

or received between the module and the host.

ON: The module is booting the system after power-on.

OFF: The module is operating normally.

Fast blinking: The request of module software for memory has failed and the

service cannot be run normally.

OFF: The module is operating normally.

3-16

3Com Router 5000 and Router 6000 v2.41
Module Guide

3.4.5 Troubleshooting

1) Symptom 1: All the LEDs are OFF after the Router is started up.

Troubleshooting: All the LEDs should fast blink once upon the startup of the device.

They are keeping ON if the module or some hardware of the module is not powered on

properly. Check whether the power supply is correctly connected. If the power supply

is operating, the fuse might be blown or anomalies have occurred to the Complex

Programmable Logic Device (CPLD). In this case, please contact your agent.

2) Symptom 2: All the LEDs are steadily ON after the device is started up.

Troubleshooting: All the LEDs should fast blink once upon the startup of the device

and then go OFF immediately, if the processor of the module starts working. All the

LEDs are ON steadily, if the system bus of the module is not in normal state or

anomalies have occurred to the CPLD.

3) Symptom 3: RUN LED is ON steadily.

Troubleshooting: When the module is operating, RUN LED should fast blinks, instead

of keeping ON steadily. RUN LED is steadily ON, if the module is powered up but not

started normally, or if the module is reset forcibly. If at the same time other one or two

LEDs (such as ACT, SPEED, and DENY) are ON, it is likely the problem of the NDEC

or the Router. RUN LED keeps ON after several times of blinking, if module

initialization fails.

Chapter 3

Multifunctional Interface Modules (Router 5000)

4) Symptom 4: RUN LED is fast blinking all the time when the device is being started

up.

Troubleshooting: After the Router is powered ON, RUN LED fast blinks all the time

until module initialization is completed. During the process, if DENY LED blinks

occasionally, there might be fault in the memory. In this case, please contact your

agent for repairing the module. SPEED LED lights during the process, if the module

system boot fails. In this case, check the configuration of the system or contact your

agent.

5) Symptom 5: RUN LED blinks slowly after the device is started up.

Troubleshooting: If the module is in offline state, the RUN LED blinks slowly. Check

that the configuration of the Router is correct, and make sure NEDC is supported.

6) Symptom 6: ACT LED is ON steadily.

Troubleshooting: If the firmware is being upgraded, ACT LED blinks. If the upgrade

fails, the LED is ON steadily and you need to upgrade the software again. If the

problem still exists, contact your agent.

7) Symptom 7: DENY LED blinks during normal operations.

Troubleshooting: DENY LED blinks during normal operations, if the module

performance or capacity is inadequate for encryption processing at a moment. This is

not a hardware failure but a phenomenon caused by technical specifications limitation

3-17

3Com Router 5000 and Router 6000 v2.41
Module Guide

of the current NDEC module. If it is necessary to upgrade the processing capability of

the NDEC module, please contact your agent.

3.5 Router 2-Port 10/100 MIM

3.5.1 Introduction

The 2-port 10Base-T/100Base-TX FE interface card (Router 2-Port 10/100 MIM)

provides one/two 10/100 Mbps RJ-45 Ethernet interface(s) for router-and-LAN

communication.

The cards support:

z 100 meters (328.1 ft.) of transmission segment over the category-5 twisted-pair

cable.

z Operation at 100 Mbps and 10 Mbps, autosensing.

z Full duplex and half-duplex, with the former in common use.

3.5.2 Interface Attributes

Chapter 3

Multifunctional Interface Modules (Router 5000)

The following table describes the interface attributes of the FIC-FE cards.

Table 3-10 Router 2-Port 10/100 MIM interface attributes

Attribute

Connector

Number of connectors

Cable

Operating mode

Supported frame format

3.5.3 Interface LEDs

Description

Router 2-Port 10/100 MIM

RJ-45

1 2

Straight-through Ethernet cable

Full duplex/half-duplex

10/100 Mbps auto-sensing

Ethernet_II

Ethernet_SNAP

The following figure illustrates an Router 2-Port 10/100 MIM panel.

3-18

3Com Router 5000 and Router 6000 v2.41
Module Guide

Figure 3-22 Router 2-Port 10/100 MIM panel

The following table describes the LEDs on the /Router 2-Port 10/100 MIM panel.

Table 3-11 LEDs on the Router 2-Port 10/100 MIM panel

LED Description

Chapter 3

Multifunctional Interface Modules (Router 5000)

LINK OFF means no link is present; ON means a link is present.

ACTIVE

3.5.4 Interface Cable

I. Ethernet cable

As shown in the following figure, the Ethernet cables for FIC-FE cards are category-5

twisted pairs with RJ-45 connectors. Pins 1 and 2 of the interface are used for

transmitting data, and pins 3 and 6 are used for receiving data.

OFF means no data is being transmitted or received on the interface and blinking

means data is being transmitted and/or received.

Figure 3-23 Ethernet cable

II. Making Ethernet cables

You can use category 5 twisted-pair cables to make Ethernet cables. A category 5

twisted-pair cable is composed of eight wires that are identified and grouped by colors

of the outer insulator. Usually a solid color wire and a white/solid color wire are

organized in pairs. But sometimes, wires are also paired by color dots.

Ethernet cables fit into two categories: straight-through and crossover.

z Straight-through cable: The wires are crimped in the RJ-45 connectors at both

ends in the same order. The cable is used for connecting a terminal device (for

3-19

3Com Router 5000 and Router 6000 v2.41
Module Guide

example, PC or router) to a HUB or LAN switch. The cables delivered with the

router are straight-through cables.

z Crossover cable: The wires are crimped in the RJ-45 connectors at both ends in

different orders. The cable is used for connecting two terminal devices (for

example, PC and router). You can make cables as needed.

 Note:

In making network cables, shielded cables are preferred for electromagnetic

compatibility sake.

The interface cables in the standard package of cards are straight-through cables.

3.5.5 Connecting the Interface Cable

Step 1: Plug one end of the cable to an Ethernet port on the router and another end to

the device to be connected. (For a PC or router, use a straight-through cable; for a

HUB or LAN switch, use a crossover cable.)

Chapter 3

Multifunctional Interface Modules (Router 5000)

Step 2: Power on the router and check the behavior of the LINK LED on the panel: ON

means that a link is present and OFF means that no link is present. In the latter case,

check the line status.

Caution:

Before you connect a port, read its label carefully; a wrong connection can cause damages to the

interface card and even the device.

3.6 Router 4-Port Serial MIM Module

3.6.1 Introduction

4-port high-speed sync/async serial interface module (Router 4-Port Serial MIM)

supports both synchronous and asynchronous modes to transmit/receive and handle

data streams at sync/async serial interfaces. The modules also support Data Terminal

Equipment/Data Circuit-terminating Equipment (DTE/DCE) mode when they are in

synchronous operating mode.

I. Synchronous and asynchronous

In different operating modes, a sync/async serial interface supports different signal

standards and baud rates. And the maximum transmission distance of signals is

related to the baud rate setting. For the relationships between cable type, baud rate

setting and signal transmission distance, see the following table.

3-20

3Com Router 5000 and Router 6000 v2.41
Module Guide

Table 3-12 Baud rate and transmission distance of V.24 (RS232)/V.35 cable

V.24 (RS232) V.35

Chapter 3

Multifunctional Interface Modules (Router 5000)

Baud rate (bps)

Maximum transmission

Distance (m)

Baud rate

(bps)

Maximum transmission

Distance (m)

2400 60 2400 1250

4800 60 4800 625

9600 30 9600 312

19200 30 19200 156

38400 20 38400 78

64000 20 56000 60

115200 10 64000 50

- - 2048000 30

Caution:

Baud rate cannot exceed 64 kbps if V.24 cable is used and the interface operates in synchronous mode.

II. Introduction to DTE and DCE

Synchronous serial interfaces support both DTE and DCE operating modes. Given

two directly connected devices, if one operates in the DTE mode, the other will operate

in the DCE mode. The DCE device provides the synchronous clock and specifies the

communicating rate. The DTE device receives the synchronous clock and

communicates at the specified rate. Generally, the Router is used as a DTE device. To

make sure that the device is a DTE or DCE, refer to the manual shipped with this

device. In addition, the following table may also help you to identify the type of the

device.

Table 3-13 Typical DTE and DCE equipment

Equipment type Interface type Typical equipment

DTE Male PC, Router

DCE Female Modem, Multiplexer, CSU/DSU

3-21

3Com Router 5000 and Router 6000 v2.41
Module Guide

Asynchronous serial interface is generally used as dialing port and connected to a

modem or a Terminal Adapter (TA). In this case, regardless of the operating mode of

the device, only an appropriate baud rate for the interface needs to be selected.

Serial interface is generally used for the direct connection to such a device as DDN,

frame relay, or X.25 switch.

3.6.2 Interface Attributes

The interface attributes of Router 4-Port Serial MIM are given in the following table:

Table 3-14 Interface attributes of Router 4-Port Serial MIM

Attribute

Connector DB100 (Router 4-Port Serial MIM)

Chapter 3

Multifunctional Interface Modules (Router 5000)

Description

Synchronous Asynchronous

Number of

connectors

Interface standard

and operating

mode

Minimum baud

rate

(bps)

Maximum baud

rate

(bps)

Cable

1 (Router 4-Port Serial MIM)

V.24 V.35

DTE

RS232

DTE DCE

DCE

1200 1200 1200 300

64 k 4.096 M 2.048 M 115.2

V.24 (RS232) DTE cable

V.24 (RS232) DCE cable

V.35 DTE cable

V.35 DCE cable

Services

supported

Router 4-Port Serial MIM conversion cable (Router 4-Port Serial MIM)

Dialup through modem

DDN leased line

Terminal access service

Backup

Async leased line

Dumb terminal access

3-22

3Com Router 5000 and Router 6000 v2.41
Module Guide

3.6.3 Interface LEDs

Router 4-Port Serial MIM panel is shown in the following figure:

Figure 3-24 Router 4-Port Serial MIM panel

Description of the LEDs on Router 4-Port Serial MIM is given in the following table:

Table 3-15 Description of the LEDs on Router 4-Port Serial MIM panel

LED Description

LINK OFF means no link is present; ON means a link is present.

Chapter 3

Multifunctional Interface Modules (Router 5000)

ACTIVE

3.6.4 Interface Cable

I. Router 4-Port Serial MIM interface cable

Router 4-Port Serial MIM provides a 1-to-4 conversion cable (Router 4-Port Serial MIM

conversion cable). One end of the cable is DB100 connector for connecting Router

4-Port Serial MIM, and the other end is DB50 (female) connector for connecting a

sync/async serial interface cable. Like , four types of sync/async serial interface cables

are available:

z V.24 (RS232) DTE cable

z V.24 (RS232) DCE cable

z V.35 DTE cable

z V.35 DCE cable

For the pinouts of these cables, see Low-End and Mid-Range Series Routers Cable
Manual.

OFF means no data is being transmitted or received; blinking means data is being

received or/and transmitted.

The following figure illustrates a Router 4-Port Serial MIM conversion cable:

3-23

3Com Router 5000 and Router 6000 v2.41
Module Guide

DB50 female

Chapter 3

Multifunctional Interface Modules (Router 5000)

DB100 male

Figure 3-25 Router 4-Port Serial MIM conversion cable

For the pinouts of Router 4-Port Serial MIM conversion cable, see Low-End and
Mid-Range Series Routers Cable Manual.

Caution:

Router 4-Port Serial MIM conversion cable is the required by Router 4-Port Serial MIM module, while the

four sync/async serial interface cables are optional. You need to order them; otherwise, they will not be

provided.

3.6.5 Connecting the Interface Cable

Warning:

In case of possible device and port damages, do not plugging or unplug connection cables of SA

modules when the router is powered on.

3-24

3Com Router 5000 and Router 6000 v2.41
Module Guide

Caution:

Before connecting an SA module, confirm the model of the equipment to be connected to the SA module

(that is, sync/async mode, DTE/DCE mode, and so on), signaling criterion required by the access

equipment, baud rate, and timing clock.

I. Connecting interface cable of Router 4-Port Serial MIM

Step 1: Plug the DB-100 connector of a Router 4-Port Serial MIM conversion cable to

the appropriate DB-100 port on the Router 4-Port Serial MIM module;

Step 2: Select a correct sync/async serial interface cable. Connect one end of the

cable to the DB50 connector of the Router 4-Port Serial MIM conversion cable and the

other end to:

z Port of CSU/DSU, if the WAN is a DDN line;

z Serial port of analog modem, if the WAN is a dial-up line;

Chapter 3

Multifunctional Interface Modules (Router 5000)

Step 3: Power on the Router, and check the LEDs of the corresponding slot on the

front panel: ON means that the MIM is operating normally and OFF means that the

POST of the MIM has failed. In the latter case, please contact your agent.

Step 4: Check the behavior of the LINK LED on the Router 4-Port Serial MIM panel. It

is OFF when the line is faulty and signal is out of synchronization.

Caution:

You should connect a cable to the port with the correct mark. Misplugging is prone to impair the SIC/MIM

and even damage the router.

3.7 Router 2 AND 4-Port Enhanced Serial MIM

3.7.1 Introduction

Router 2 AND 4-Port Enhanced Serial MIM, 2-/4-port enhanced high-speed

sync/async serial interface card, transmits, receives, and processes data on the

synchronous/asynchronous serial interface. They support both synchronous and

asynchronous modes. In the former case, they support the DTE/DCE mode.

I. DTE and DCE

An FIC-SA card is usually connected to an external modem for dialing purpose, where

an appropriate baud rate setting is required.

3-25

3Com Router 5000 and Router 6000 v2.41
Module Guide

The synchronous serial interface can work in either DTE or DCE mode. Two directly

connected devices must work as DTE and DCE respectively. The DCE provides clock

synchronization and specifies the communication rate, whereas the DTE accepts

clock synchronization and communicates at the specified rate.

The router normally works as a DTE. To identify whether the equipment connected to

the router is DTE or DCE, refer to the manual shipped with the equipment.

II. Speed and transmission segment of synchronous/asynchronous serial

interface

In different operating modes, the synchronous/asynchronous serial interface supports

different electric signal specifications and baud rates. In addition, the maximum signal

transmission segment depends not only on the specified baud rate but also on the

selected cable. The following table shows how the cable type, baud rate, and the

maximum signal transmission segment related to each other.

Table 3-16 Speed and transmission segment of the V.24 (RS232)/V.35 cable

Chapter 3

Multifunctional Interface Modules (Router 5000)

V.24 (RS232) V.35

Baud rate (bps)

Max. transmission

segment

Baud rate (bps) Max. transmission segment

2400 60 m (196.9 ft.) 2400 1250 (4101 ft.)

4800 60 m (196.9 ft) 4800 625 m (2050.5 ft.)

9600 30 m (98.4 ft.) 9600 312 m (1023.6 ft.)

19200 30 m (98.4 ft) 19200 156 m (511.8 ft.)

38400 20 m 65.6 ft.) 38400 78 m (255.9 ft.)

64000 20 m (65.6 ft) 56000 60 m (196.9 ft.)

115200 10 m (32.8 ft.) 64000 50 m (164 ft.)

–– –– 2048000 30 m (98.4 ft.)

 Note:

When a V.24 cable is used, the baud rate of the FIC-SA in synchronous mode shall not exceed 64 Kbps.

3.7.2 Interface Attributes

The following table describes the interface attributes of the FIC-SAE:

3-26

3Com Router 5000 and Router 6000 v2.41
Module Guide

Table 3-17 Interface attributes of the Router 2 AND 4-Port Enhanced Serial MIM

Attribute

Connector DB-28

2 (FIC-2SAE)

Chapter 3

Multifunctional Interface Modules (Router 5000)

Description

Synchronous Asynchronous

Number of connectors

4 (FIC-4SAE)

8 (FIC-8SAE)

Interface standard and

operating mode

V.24 V.35, RS449, X.21, RS530

RS232

DTE, DCE DTE DCE

Min. baud rate(bps) 1200 1200 300

Max. baud rate(bps) 64 k 4.096 M 2.048 M 115.2

V.24 (RS232) DTE cable

V.24 (RS232) DCE cable

V.35 DTE cable

V.35 DCE cable

X.21 DTE cable

Cable

X.21 DCE cable

RS449 DTE cable

RS449 DCE cable

Supported service

3.7.3 Interface LEDs

The following figures show the 2 and 4-port panels:

RS530 DTE cable

RS530 DCE cable

1) DDN leased line

2) Terminal access service

3-27

1) Dialup through modem

2) Backup

3) Asynchronous leased

line

4) Terminal access

service

3Com Router 5000 and Router 6000 v2.41
Module Guide

Figure 3-26 2-port panel

Figure 3-27 4-port panel

The following table describes the LEDs on the panel:

Table 3-18 LEDs on the panel

Chapter 3

Multifunctional Interface Modules (Router 5000)

LED Description

LINK OFF means no link is present; ON means a link is present.

ACT

3.7.4 Interface Cable

The MIM cards use synchronous/asynchronous serial interface cables with DB-28

connectors.

Before connecting a card, identify the line properties and then select the proper

interface cable from the following ten cable options:

z V.24 (RS232) DTE cable: DB-25 plug at the network end

z V.24 (RS232) DCE cable: DB-25 receptacle at the network end

z V.35 DTE cable: 34PIN plug at the network end

z V.35 DCE cable: 34PIN receptacle at the network end

z X.21 DTE cable: DB-15 plug at the network end

z X.21 DCE cable: DB-15 receptacle at the network end

z RS449 DTE cable: DB-37 plug at the network end

z RS449 DCE cable: DB37 receptacle at the network end

z RS530 DTE cable: DB-25 plug at the network end

z RS530 DCE cable: DB25 receptacle at the network end

OFF means no data is being transmitted or received. Blinking means

data is being transmitted and/or received.

3-28

3Com Router 5000 and Router 6000 v2.41
Module Guide

All these cables use a DB-28 connector to connect the router, but the connector at the

network end varies with the type of the to-be-connected network.

z V.24 DTE cable

Figure 3-28 V24 DTE cable

z V.24 DCE cable

Chapter 3

Multifunctional Interface Modules (Router 5000)

Figure 3-29 V.24 DCE cable

z V.35 DTE cable

Figure 3-30 V.35 DTE cable

z V.35 DCE cable

Figure 3-31 V.35 DCE cable

z X.21 DTE cable

3-29

3Com Router 5000 and Router 6000 v2.41
Module Guide

Figure 3-32 X.21 DTE cable

z X.21 DCE cable

Figure 3-33 X.21 DCE cable

Chapter 3

Multifunctional Interface Modules (Router 5000)

z RS449 DTE cable

Figure 3-34 RS449 DTE cable

z RS449 DCE cable

Figure 3-35 RS449 DCE cable

z RS530 DTE cable

3-30

3Com Router 5000 and Router 6000 v2.41
Module Guide

Figure 3-36 RS530 DTE cable

z RS530 DCE cable

Chapter 3

Multifunctional Interface Modules (Router 5000)

Figure 3-37 RS530 DCE cable

 Note:

These cables are optional. You must order them together with the MIM card. Otherwise, they are not

provided.

3.7.5 Connecting the Interface Cable

Caution:

Do not plug or unplug interface cables into or from the MIM card to prevent the device or ports from

being impaired.

Before connecting an MIM card, identify the type of the equipment to be connected (that is, the

synchronous/asynchronous mode, DTE/DCE mode, and so on), signaling criterion required by the

access equipment, baud rate, and line clock.

Step 1: Identify type of the interface to be connected and then choose the correct

synchronous/asynchronous serial interface cable.

3-31

3Com Router 5000 and Router 6000 v2.41
Module Guide

Multifunctional Interface Modules (Router 5000)

Step 2: Plug the DB-28 connector of the cable to the corresponding DB-28 port on the

MIM card.

Step 3: Connect the other end of the cable as follows:

z If the WAN is a DDN line, connect the cable to the port on the CSU/DSU.

z If the WAN is a dialup line, connect the cable to the serial port of an analog

modem.

Step 4: Power on the router, and check behavior of the LINK LED on the MIM panel. It

is OFF when fault occurs on the line and signal is not synchronized. Check the line

status.

3.8 Router 2 and 4-Port CE1/PRI MIM Modules

3.8.1 Introduction

I. 2 and 4-Port CE1/PRI

Router 2 and 4-Port CE1/PRI MIM, the 1-/2-/4-port channelized E1/PRI interface

module, transmits, receives, and processes E1 data traffic. In addition, you can use

the card for other purposes, such as CE1 access and the ISDN PRI function.

Chapter 3

II.

The module is different from the 2 and 4-Port CE1/PRI module in the sense that:

z The FE1 operating mode supported by the E1-F cards allows only one n x 64

kbps bundle to be formed on each interface, where n = 1 to 31. However, an E1

card allows arbitrary grouping of 31 channels and multiple bundles.

z The E1-F modules do not support PRI mode.

3.8.2 Interface Attributes

The interface attributes of Router 2 and 4-Port CE1/PRI MIM and are given in the

following table:

Table 3-19 Interface attributes of Router 2 and 4-Port CE1/PRI MIM and

Attribute

Connector DB-15 DB-25

Number of

connectors

Description

2-port module 4-port module

2 1

Interface standard G.703, G.704

Interface rate 2.048 Mbps

3-32

3Com Router 5000 and Router 6000 v2.41
Module Guide

E1 75-ohm non-balanced coaxial cable

E1 120-ohm balanced twisted pair cable

Chapter 3

Multifunctional Interface Modules (Router 5000)

Cable type

Operating mode

Services supported

3.8.3 Interface LEDs

The following figure illustrates a 2-port panel.

120-ohm 4E1 conversion cable (4E1/4E1-F modules)

75-ohm 4E1 conversion cable (4E1/4E1-F modules)

Coaxial connector, network interface connector and 75-ohm to 120-ohm

adapter (with BNC connector)

E1, CE1, ISDN PRI (only supported by Router 2 and 4-Port CE1/PRI MIM)

FE1 (only supported by )

1) Backup

2) Terminal access service

3) ISDN PRI (only supported by Router 2 and 4-Port CE1/PRI MIM)

Figure 3-38 2-port panel

The following figure illustrates a 4-port module.

Figure 3-39 4-port panel

Description about the LEDs on E1/E1-F panels is given in the following table:

Table 3-20 Description about the LEDs on E1/E1-F panels

LED Description

ON means the carrier signal has been received.

LINK

OFF means no carrier signal has been received.

3-33

3Com Router 5000 and Router 6000 v2.41
Module Guide

Chapter 3

Multifunctional Interface Modules (Router 5000)

ACTIVE

3.8.4 Interface Cable

I. Interface cable of 2-port modules

2-port interface cables are G.703-compliant cables (referred to as E1 cables

throughout the rest part of the manual). E1 cables are divided into two types: 75-ohm

unbalanced coaxial cables and 120-ohm balanced twisted pair cables.

z 75-ohm unbalanced coaxial cable

Figure 3-40 E1 75-ohm unbalanced coaxial cable

OFF means no data is being transmitted or received. ON means data is

being transmitted or received.

 Note:

You can select a pair of coaxial connectors with a BNC receptacle at both ends that connect two 75-ohm

unbalanced coaxial cables with BNC connectors. The coaxial connectors are used for the extension

connection with E1 75-ohm unbalanced coaxial cable.

z 120-ohm balanced twisted pair cable

At the router side, the connector of the cable is DB-15 (male); at the network side, the

connector is RJ-45, as illustrated in the following figure.

Figure 3-41 2-port 120-ohm balanced twisted pair cable

3-34

3Com Router 5000 and Router 6000 v2.41
Module Guide

 Note:

You can select a network interface connectors with an RJ-45 receptacle at both ends that connect two

120-ohm balanced twisted pair cables with BNC connectors. The network interface connector is used in

the extension connection with E1 120-ohm balanced twisted pair cables.

In addition, a 75-ohm to 120-ohm adapter is provided.

For the pinouts of E1cables, see Low-End and Mid-Range Series Routers Cable
Manual.

Caution:

E1 cable, coaxial connector, network interface connector and 75-ohm to 120-ohm adapter are all

optional accessories, you need to order them when purchasing 2-port modules; otherwise, they are not

provided.

Chapter 3

Multifunctional Interface Modules (Router 5000)

II. Conversion cable for 4-port module

4-port modules provide two types of “1-to-4” conversion cables: 120-ohm 4-port

module conversion cable and 75-ohm 4-port module conversion cable. At one end of

these two types of cables is a DB-25 connector used to connect a router, and at the

other end are four DB-15 connectors used to connect E1 cables. You can distinguish

these two types of cables by the main labels. There are the words “4-port module

-120Ohm-CAB “ printed on the main label for 120-ohm 4-port module conversion

cables whereas the words “4-port module -75Ohm-CAB” are printed on the main label

for 75-ohm 4-port module conversion cables.

The two types of cables have a similar appearance, as illustrated in the following

figures. However, a 75-ohm 4-port module conversion cable uses 8-core coaxial

cables but a 120-ohm 4-port module conversion cable uses four twisted pair cables.

3-35

3Com Router 5000 and Router 6000 v2.41
Module Guide

Figure 3-42 120-ohm 4-port module conversion cable

Chapter 3

Multifunctional Interface Modules (Router 5000)

Figure 3-43 75-ohm 4-port module conversion cable

Caution:

Both 75-ohm 4-port module 1 and 120-ohm 4-port module conversion cables are required for 4-port

module modules, while E1 cable is optional, so you need to order E1 cables when purchasing a 4-port

module module. Otherwise, they will not be provided.

3-36

3Com Router 5000 and Router 6000 v2.41
Module Guide

In addition, a 75-ohm to 120-ohm adapter is provided. For the pinouts of cables, see

Low-End and Mid-Range Series Routers Cable Manual.

3.8.5 Internal DIP Switches

Router 2 and 4-Port CE1/PRI MIM and modules provide internal DIP switches, and

the setting of DIP switches decides the interface impedance and grounding mode.

Table 3-21 Correlation between DIP switches of Router 2 and 4-Port CE1/PRI MIM and modules and

E1 interface

Module 2-port 4-port

Chapter 3

Multifunctional Interface Modules (Router 5000)

DIP

switch

E1

interface

S1 S1 S3 S4 S5

Interface

0

Interface 0 Interface 1 Interface 2 Interface

3

By default, all the DIP switches for Router 2 and 4-Port CE1/PRI MIM and modules

are set to ON, as illustrated in the following figure:

on

1

2

3

4

5

6

7

8

Figure 3-44 Default setting of DIP switches for Router 2 and 4-Port CE1/PRI MIM and modules

Description of DIP switch settings is given in the following table for Router 2 and 4-Port

CE1/PRI MIM and modules:

Table 3-22 Description of DIP switch settings of Router 2 and 4-Port CE1/PRI MIM and modules

DIP Description

1BIT ON OFF

75-ohm/120-ohm

Configuration of

75-ohm impedance

Configuration of

120-ohm impedance

selection switch

2BIT

3-37

ON OFF

3Com Router 5000 and Router 6000 v2.41
Module Guide

Chapter 3

Multifunctional Interface Modules (Router 5000)

3BIT ON OFF

4BIT ON OFF

5BIT

ON OFF

OFF: RxRing is

grounded via

6BIT

RxRing grounding

mode selection switch

capacitance.

-

ON: RxRing is

grounded directly.

ON: RxShield is

7BIT

RxShield grounding

mode selection switch

-

grounded.

OFF: RxShield is not

grounded.

OFF: RxShield is

grounded via

8BIT

SxShield grounding

mode selection switch

-

capacitance

ON: RxShield is

grounded directly.

Caution:

It is recommended to select the DIP switch of Router 2 and 4-Port CE1/PRI MIM and

modules in this way: when connecting 75-ohm cable, flip BIT1-8 to ON, and when

connecting 120-ohm cable, flip BIT1-8 to OFF. Positions of DIP switches can only

be changed by the trained personnel.

By default, all of the DIP switches of Router 2 and 4-Port CE1/PRI MIM and modules

are factory-configured to ON, that is, the impedance of E1 interface is 75-ohm.

3.8.6 Connecting the Interface Cable

3-38

3Com Router 5000 and Router 6000 v2.41
Module Guide

Caution:

Read the mark identifying a port before you connect a cable to it, making sure it is the

correct port. Wrong connection tends to damage interface modules and even the

Router;

Some protection measures are taken for Router 2 and 4-Port CE1/PRI MIM and

modules. Still, you are recommended to install a special lightning arrester at the

input end of the cable leading to the outdoors in order to protect the line against

lightning strikes more efficiently.

I. Connecting interface cable of 1E1/2E1 and modules

Step 1: Check the type of cable, and set the DIP switches module correctly;

Step 2: Plug the DB-15 connector of the cable into the port on the module;

Step 3: Connect the other end of the cable to the network device;

Chapter 3

Multifunctional Interface Modules (Router 5000)

1) When using 75-ohm unbalanced coaxial cable,

z Connect its BNC connector to the device to be connected directly, if cable

extension is not needed;

z Connect its BNC connector to a coaxial connector and the other end of the

coaxial connector to the device to be connected through a 75-ohm trunk cable, if

cable extension is needed;

Caution:

Connect the local Tx wire in the cable to the remote Rx wire and the local Rx wire to the remote Tx wire.

DB-15

Network
devices
such as DDN

Router

BNC

BNC

Coaxial connector

75-ohm non-balanced coaxial cable

75-ohm E1 trunk cable

Figure 3-45 Extending an 75-ohm unbalanced coaxial cable

3-39

3Com Router 5000 and Router 6000 v2.41
Module Guide

z If the port on the network device to be connected has a 120-ohm port, use a

75-ohm to 120-ohm adapter, or use a 120-ohm cable instead.

2) When using a 120-ohm balanced twisted pair cable,

z Connect its RJ-45 connector to the RJ-45 port on the device to be connected

directly, if cable extension is not needed.

z Connect its RJ-45 connector to a network interface connector and then the other

end of the network interface connector to the network device to be connected

through a 120-ohm E1 trunk cable, if cable extension is needed.

DB-15

Chapter 3

Multifunctional Interface Modules (Router 5000)

Network
devices such
as DDN

Router

Network interface connector

120-ohm balanced twisted pair

RJ-45

RJ-45

120-ohm E1 trunk cable

Figure 3-46 Extending an 120-ohm balanced twisted pair cable

Step 4: Power on the Router, and check the LEDs of the corresponding slot on the

front panel: ON means that the MIM is operating normally and OFF means that the

POST of the MIM has failed. In the latter case, please contact your agent;

Step 5: Check the behavior of the LINK LED on the module panel. It is OFF when fault

has occurred on the link and signal is out of synchronization. In this case, please

check the link.

II. Connecting interface cable of 4-port

Step 1: Select the appropriate cable and cable according to type of the port on the

remote device, and set DIP switches of module correctly;

z If the resistance of the port on the device to be connected is 75-ohm, select a

75-ohm E1 non-balanced coaxial cable and a 75-ohm 4E1 conversion cable, and

set all the DIP switches on the 4E1/4E1-F module to “ON” (that is, the port

resistance is 75-ohm).

z If the resistance of the port on the device to be connected is 120-ohm, select a

120-ohm balanced twisted pair cable and a 120-ohm conversion cable, and set all

the DIP switches on the module to “OFF” (that is, the port resistance is 120-ohm).

Step 2: Plug the DB-25 connector of the conversion cable into a DB-25 port on or

module, and tighten the screws;

Step 3: Connect the DB-15 connector of the conversion cable to the cable, making

sure of wire sequence of the connector;

3-40

3Com Router 5000 and Router 6000 v2.41
Module Guide

Step 4: Connect the E1 cable to the device to be connected.

Step 5: Power on the Router, and check the LEDs of the corresponding slot on the

front panel: ON means that the MIM is operating normally and OFF means that the

POST of the MIM has failed. In the latter case, please contact your agent;

Step 6: Check the behavior of the LINK LED on the module panel. It is OFF when fault

has occurred on the link and signal is out of synchronization. In this case, please

check the link.

Multifunctional Interface Modules (Router 5000)

3.9 Router 4-Port ISDN-S/T MIM Module

3.9.1 Introduction

4-port ISDN BRI interface module (Router 4-Port ISDN-S/T MIM) serves to

transmit/receive and handle four channels of data streams on the ISDN BRI S/T

interface.

Router 4-Port ISDN-S/T MIM can work in dialup mode and leased line service mode.

Chapter 3

3.9.2 Interface Attributes

The interface attributes of Router 4-Port ISDN-S/T MIM are given in the following

figure:

Table 3-23 Interface attributes of Router 4-Port ISDN-S/T MIM

Attribute Description

Connector RJ-45

Number of connectors 4

Cable ISDN S/T cable

Protocols and standards ITU-T I.430, Q.921, Q.931 compliant

Operating mode

1) ISDN dialup

2) ISDN leased line

1) ISDN

2) Supplementary ISDN services

Services supported

3) Multi-user number

4) Sub-address

5) Backup

3-41

3Com Router 5000 and Router 6000 v2.41
Module Guide

3.9.3 Internal DIP switches

The purpose of internal DIP switches of Router 4-Port ISDN-S/T MIM is to set the

matched resistance on an ISDN BRI S/T port. The setting of this switch (DIP S1)

decides the use of 100-ohm resistance on the ISDN BRI S/T port.

on

1

2

3

4

5

6

7

8

Figure 3-47 Default setting of DIP switch for Router 4-Port ISDN-S/T MIM module

Chapter 3

Multifunctional Interface Modules (Router 5000)

Table 3-24 Configuration of DIP switches for Router 4-Port ISDN-S/T MIM module

DIP switch Description

Default
setting

ON Uses 100-ohm resistance

1. 2BIT
OFF

Not uses 100-ohm

resistance

ON 0

ON Uses 100-ohm resistance

3. 4BIT
OFF

Not uses 100-ohm

matched resistance

ON 1

ON Uses 100-ohm resistance

5. 6BIT
OFF

Not uses 100-ohm

resistance

ON 2

ON Uses 100-ohm resistance

7. 8BIT
OFF

Not uses 100-ohm

resistance

ON 3

Port

3-42

3Com Router 5000 and Router 6000 v2.41
Module Guide

3.9.4 Interface LEDs

Router 4-Port ISDN-S/T MIM panel is shown in the following figure:

Figure 3-48 Router 4-Port ISDN-S/T MIM panel

Description of the LEDs on Router 4-Port ISDN-S/T MIM panel is shown in the

following table:

Table 3-25 Description of the LEDs on Router 4-Port ISDN-S/T MIM panel

LED Description

Chapter 3

Multifunctional Interface Modules (Router 5000)

Yellow lamp on the left

Green lamp on the right

OFF means channel B1 is idle. ON means channel B1 is occupied and

data communication is going on.

OFF means channel B2 is idle. ON means channel B2 is occupied and

data communication is going on.

3.9.5 Interface Cable

Interface cables of Router 4-Port ISDN-S/T MIM are standard ISDN S/T interface

cables. Pins 3 and 6 are for transmitting data, and pins 4 and 5 are for receiving data.

At both ends of the cables are RJ-45 connectors.

Yellow

Yellow

Green

Green

Red

Red

Black

Black

Figure 3-49 ISDN S/T cable

3.9.6 Connecting the Interface Cable

Yellow

Yellow

Black

Black

Green

Green

Red

Red

Caution:

Read the mark identifying a port before you connect a cable to it, making sure it is the correct port.

Wrong connection tends to damage MIMs and even the Router.

3-43

3Com Router 5000 and Router 6000 v2.41
Module Guide

Step 1: On Router 4-Port ISDN-S/T MIM, choose the port for connection;

Step 2: Confirm the type of ISDN line provided by the telecom carrier;

Step 3: Connect the cable:

z If the line is an ISDN U line, adapt it using an NT1 adapter by plugging one end of

the S/T interface cable to the S/T port of the NT1 adapter and the other end to the

BRI port on Router 4-Port ISDN-S/T MIM;

z If the line is an ISDN BRI S/T interface line, directly connect the cable to the BRI

port on Router 4-Port ISDN-S/T MIM;

Step 4: Power on the Router, and check the LEDs of the corresponding slot on the

front panel: ON means that Router 4-Port ISDN-S/T MIM is operating normally and

OFF means that the POST of Router 4-Port ISDN-S/T MIM has failed. In the latter

case, please contact your agent.

3.10 Router 2-Port CT1/PRI MIM

3.10.1 Introduction

Chapter 3

Multifunctional Interface Modules (Router 5000)

I. Router 2-Port CT1/PRI MIMmodule

1/2/4-port channelized T1/PRI interface module serves to transmit/receive and handle

T1 data streams, provide CT1 access, and fulfill the function of ISDN PRI. Thereby,

one card can be used for multiple purposes.

II.

1/2/4-port fractional T1 interface module and module are different in the sense that:

z FT1 operating mode supported by T1-F modules allows only one bundle. In other

words, the time slots can only be bundled into one nx64 kbps or 56 kbps channel,

where n=1-24. However, a CT1 module allows of arbitrary grouping of the 24

channels;

z T1-F does not support PRI mode.

3.10.2 Interface Attributes

The interface attributes of Router 2-Port CT1/PRI MIM modules are given in the

following table:

Table 3-26 Interface attributes of Router 2-Port CT1/PRI MIM and modules

Attribute Description

Connector RJ-45

2

Number of connectors

3-44

3Com Router 5000 and Router 6000 v2.41
Module Guide

Attribute Description

Chapter 3

Multifunctional Interface Modules (Router 5000)

G.703/T1.102

G.704

Interface standard

Interface rate 1.544Mbps

Cable type T1 cable (100-ohm shielding network cable)

Operating mode

Services supported

3.10.3 Interface LEDs

The panel is similar to that of the MIM, and they differ only in silk-screen.

AT&T TR 54016

AT&T TR 62411

ANSI T1.403

CT1, ISDN PRI (Router 2-Port CT1/PRI MIMmodule)

FT1 ( module)

1) Backup

2) Terminal access service

3) ISDN PRI (Router 2-Port CT1/PRI MIMmodule)

Figure 3-50 2T1/2T1-F panel

Table 3-27 Description of the LEDs

LED Description

ON means the carrier signal has been received.

LINK/ACT

OFF means no carrier signal has been received.

Blinking means data is being transmitted or/and received.

ON means the interface is in a loopback.

LP/AL

Blinking means an AIS, LFA, or RAI alarm signal is present.

OFF means no loopback or alarm is present.

3-45

3Com Router 5000 and Router 6000 v2.41
Module Guide

Note:

AIS = Alarm indication signal; LFA = loss of frame alignment; RAI = Remote alarm indication

3.10.4 Interface Cable

Interface cables (T1 cables) for modules are 100-ohm straight-through shielding

network cables, as shown in the following figure:

Figure 3-51 T1 cable

Chapter 3

Multifunctional Interface Modules (Router 5000)

In addition, you may use a network interface connector to extend a T1 cable. Both

ends of the connector are RJ-45 jacks that can connect two network cables.

Caution:

Both T1 cable and network interface connector are optional accessories. You should order them

together with the module. Otherwise, they will not be provided.

3.10.5 Connecting the Interface Cable

Caution:

Read the mark identifying a port before you connect a cable to it, making sure it is the

correct port. Wrong connection tends to damage interface modules and even the

Router;

Some protection measures are taken for Router 2-Port CT1/PRI MIM. Still, you are

recommended to install a special lightning arrester at the input end of the cable

leading to the outdoors in order to protect the line against lightning strikes more

efficiently.

3-46

3Com Router 5000 and Router 6000 v2.41
Module Guide

Step 1: Insert one end of a T1 cable into the RJ-45 connector on the T1 or T1-F

module;

Step 2: Connect the other end of the cable to the device to be connected:

z directly if the cable is long enough; or

z after extending the cable if it is not long enough, as shown in the following figure:

T1 cable (100-ohm straight-through

shielding network cable)

Multifunctional Interface Modules (Router 5000)

Network interface connector

Chapter 3

RJ45

Router

RJ45

Straight-through network cable

RJ45

Figure 3-52 Extending a T1 cable

Step 3: Power on the Router, and check the corresponding LED READY on the front

panel of the router for the slot: ON means that the MIM is operating normally and OFF

means that the POST of the MIM has failed. In the latter case, please contact your

agent;

Step 4: Check the behavior of the LINK LED on the T1 or T1-F panel. It is OFF when

the line is faulty and signal is Off.

3.11 Router 1-Port ADSL Over POTS MIM

3.11.1 Introduction

Router 1-Port ADSL Over POTS MIM/, the 1-/2-port ADSL over PSTN interface card,

allows a LAN subscriber to connect to the digital subscriber's loop access multiplexer

(DSLAM) at the central office over a regular analog subscriber line or telephone line.

Thus, the subscriber can access the ATM/IP backbone or the Internet to enjoy

services such as high-speed data communication and video on demand (VoD).

DDN, etc

ADSL transmits data in the high frequency band above 26 kHz. Therefore, it can

provide services without interfering with the voice service being provided in the low

frequency band (0 to 4 kHz) on the same line. It provides downlink rates in the range

32 kbps to 8 Mbps and uplink rates in the range 32 kbps to 1 Mbps.

The ADSL interface cards provide these functions:

z Manual ADSL line activation and deactivation, supporting SAR loopback for

convenient fault isolation.

z Interface standards of G. DMT, G. Lite, and T1.413, auto-sensing.

z Trellis coding (except for G. Lite) on ADSL interfaces, enhancing stability of ADSL

connections.

3-47

3Com Router 5000 and Router 6000 v2.41
Module Guide

3.11.2 Interface Attributes

The following table describes the interface attributes of the Router 1-Port ADSL Over

POTS MIM.

Table 3-28 Interface attributes of the Router 1-Port ADSL Over POTS MIM

Chapter 3

Multifunctional Interface Modules (Router 5000)

Attribute

Connector

Number of connectors

Interface standard

Interface rate

Cable and the Max. transmission

segment

Supported service

Router 1-Port ADSL Over

POTS MIM

RJ-11

1 (Router 1-Port ADSL Over POTS MIM)

2 ()

ITU-T 992.1 G.DMT

ITU-T 992.2 G.Lite

ANSI T1.413 Issue 2

In ADSL full rate mode (ITU-T 992.1 G.DMT/ANSI T1.413):

8160 kbps (downlink rate)

896 kbps (uplink rate).

In full rate mode, 1.8 km (1.1 mi.) over the telephone cable

( depending on the line quality).

ADSL over the regular telephone line

3.11.3 Panel and Interface LED

The following figure illustrates the Router 1-Port ADSL Over POTS MIM panel.

Figure 3-53 Router 1-Port ADSL Over POTS MIM panel

The following table describes the LEDs on the card panels.

3-48

3Com Router 5000 and Router 6000 v2.41
Module Guide

Table 3-29 LEDs on the Router 1-Port ADSL Over POTS MIM panel

LED Description

Chapter 3

Multifunctional Interface Modules (Router 5000)

LINK

ACT

OFF means the loop is inactive; ON means the loop has been activated and has

entered the data mode; blinking means the loop is being activated.

OFF means no data is being transmitted or received on the interface and blinking

means data is being transmitted and/or received.

3.11.4 Interface Cable

The interface cables that the Router 1-Port ADSL Over POTS MIM uses are regular

telephone cables.

 Note:

The standard equipping package of the Router 1-Port ADSL Over POTS MIM includes the regular

telephone cable(s). You can separately order an external splitter as needed.

3.11.5 Connecting the Interface Cable

In G. Lite mode, no splitter is needed. You can directly connect the router to the PSTN

using a telephone cable, and simply connect the phone-set in parallel with the router at

the cable distribution box.

Full rate mode requires a splitter. Follow these steps to connect the cables:

Step 1: Plug one end of a telephone cable into the ADSL port on the router, and the

other end into the internal ADSL port on the splitter.

Step 2: Connect the telephone to the phone port on the splitter with another telephone

cable.

Step 3: Connect the external ADSL port on the splitter to the PSTN with a third

telephone cable.

3-49