3Com Corporation
 Restricted Rights Legend
Restricted Rights Notification for U.S. Government Users
 Proprietary Material
Page
 Contents
 Appendix A. Cables
 Introduction
Overview
Audience
Manual
 Trademarks
About This Manual
 Switch?
What is
PathBuilder S24x
26x,
 Support
Meshed Cluster
Application
 Branch Nodes
Applications
Performance
 Concentrator
Regional
 Regional Concentrator Example
 PathBuilder S24x, 26x, and 27x Switch Cluster Example
 Description
Features and Protocols
 Hardware Components
PathBuilder S24x, 26x, and 27x Switch Hardware Configuration
 Components
Hardware
Component Description
DSPM/SM
 Ethernet Port 4 Limitations
 Enclosure
 Parts
Motherboard
Motherboard
Ports
 Flash Simm
 Serial/Network
Port Numbers
Slot Number Port Number Associated Card
 DIMs without a Cable Adapter DIMs with a Cable Adapter
Used
Port Number Use
 Back Panel Components
Back Panel
 Function
TI Dual Port Digital PBX Interface Card
 Cable Description Function
 Color LED is Indicating
Indicators
LED Status
 E1 Dual Port Digital PBX Interface Card
 Settings
DIP Switch
PBX Interface Card Illustration
Location
 Sysfail
RUN
 Step Action
DSPM/SM Card
 13. DSPM/SM Card
 14. Cabling T1/E1 Card to DSPM/SM Cards
 Dspm Card with Analog E&M Interface
 15. DSPM/E&M Card
 LEDs
 Default Jumper
Setting Jumpers for Dspm Card with Analog E&M Interface
Settings
Jumper Wire/600 Wire/UK Number Complex
 16. UK Complex Impedance
Germany
 18. Jumper Locations for Dspm E&M Card
 Dspm Card with FXS Analog Interface
 20. Dspm Card with Analog FXS Interface
 Users
Jumper Locations
For Australian
 Dspm Host Card with FXO Analog Interface
 21. DSPM/HC Card with Analog FXO Daughtercard
Card Illustration
 Hardware Components
 48V Ringer/Power Supply Card and Enclosure
 22. Standard -48V RInger/Power Supply Card and Enclosure
 23. Enhanced -48V RInger/Power Supply Card and Enclosure
 24 BaseT Transceiver
10BaseT Transceiver
 General
Radio Frequency Interference Regulations
Canadian DOC
 Telecommunications Regulations
 Mise en Garde
 FCC and Telephone Company Procedures and Requirements
 FCC Information
 Concerning
Regulations
Electromagnetic
Radiation
 FCC Information
 Preparation and Unpacking
 Environment
Selecting an
Operating
 Mise en Garde
 Checking
Unpacking
 PathBuilder S24x, 26x, and 27x Switch Rackmount Kit
 Considerations
Placement
 PathBuilder S24x, 26x, and 27x Switch Rackmount Kit
 Step Action Description
 Step Action Description
 Pedestal Base
Removing
 Steps for
Rackmount Assembly
 Installing the PathBuilder S24x, 26x, and 27x Switch
 Installation
PathBuilder S24x, 26x, and 27x Switch Hardware
 Avertissement
 Switches 1
Setting DIP Switches
Switch Settings for Motherboard Switches 1
Set Switch For
 DSU DIM Installation
Installing the DSU DIM
 Step Action Result/Description
 Switch Settings
 Procedure
Configuration
INT
EXT
 Input Signals
DSU Input and Output Signaling
Output Signals
Signal Description
 CLK
IDL
 Loopback Options
 Troubleshooting
Troubleshooting DSU Installation
If Problems Arise
DIM
 Example
Installing DIMs
 Mise en Garde
 Installing SIMMs
 Installing SIMMs
 BRI
Installing I/O Cards
Installing an I/O
 Installation
Installing a T1 or E1 Dual Port Digital PBX Interface Card
 Place the interface card on an antistatic mat
 Installing the T1/CSU Daughter Card
 Follow these steps to install the T1/CSU Daughter card
 Installing T1/CSU Daughter Cards
 LAN
Cabling the PathBuilder S24x, 26x, and 27x Switch
 Transceiver
Installing the Transceiver
 Power Up
Power-Up Diagnostics/Verification
Sequence
Function Description
 Command
Default Node
Setting Node to
Default
 Installing Software Options
 Full Mesh Cluster Cabling
Configuring
Usage
Cables
 Mesh Diagram
 Maintenance
 Maintenance
 Cover
Removing/Replacing Top Cover
 Removing the Top Cover
 Panel Cover
Removing/Replacing Front Panel Cover
 Removing the Front Panel Cover
 Supply
Removing/Replacing Power Supply
 Removing the Power Supply
 Expansion Card
Removing an
 Removing the Support Bar
 Removing an Expansion Card
 Replacing PathBuilder S24x, 26x, and 27x Switch Motherboard
 Removing the Motherboard
Install
 Replacing
Removing/Replacing the Lithium Battery
Battery
 Removing the Lithium Battery
 Removing/Replacing the Lithium Battery
 Alarms
What Is It?
Statistics
Software
 Overview
Application Example
 Configure this Record/Table To do this
Configuring Channelized Data
 Configuring Channelized Data
 Configure Ports
Configuring T1 and E1 Physical Ports
Step Action Result
49 or
 Port Record
Menu Configure Path Main.6 Node Port
 Parameters Port Number
Guidelines
Port Type
Line Framing Type
 INT, REC
Transmit Clock
Line Build Out
Facility Data Link
 Threshold Value-LCV
Threshold Value LES
Threshold Value-PCV
Threshold Value-CSS
 Threshold Value-BES
Threshold Value-ES
 Threshold Value Sefs
Threshold Value-SES
 Threshold Value UAS
 Line Coding
E1 Port Record
Parameters Port Type
 Line Impedance
 Threshold Value-CSS
 Threshold Value-SES
 Threshold Value UAS
 How to
Booting Virtual
Enabling/ Disabling
Virtual Ports
 Port Configuration for Channelized Data Option
 What You See
Configuring Virtual Port Mapping Table
 Virtual Mapping
Configure Select Virtual Port Mapping
Virtual Port
Mapping Table Parameters Virtual Port Number
 DS0 Rate
Time Slots
 Function/Signal Pin
EIA 232-D Signals Motherboard and SDB
Function/Signal Name
Pin
 Function Pin
Position Signal Name
35/V.36 Motherboard
 External Transmit Clock B Clock a Test Mode
Function/Signal
35/V.36 SDB
Receive Receive Clock Clock B Data Data Terminal Ready
 Position Signal
V11 Signals Motherboard
 V11 Signals SDB
 Ethernet Cable Pinouts
Additional Information Ethernet RJ-45S Connector Signals
Pin Signal
 +12V
 Ethernet Cable Pinouts
 DC Input
Power Output
AC Input
 PathBuilder S24x, 26x, and 27x Switch Specifications
 Numeric Status Service Description/Comments Display
Error Codes
 Numeric Status Service Description/Comments
 Technical Support
 3ComFacts Automated Fax Service
Access by Analog Modem
Access by Digital Modem
Country Data Rate Telephone Number
 Country Telephone Number
Support from
3Com
 Country Telephone Number Fax Number
 CTP
Index
Numerics
 FCC
DSU
 Index-3
 URL D-1
Simm
 Disabling Warm Restart World Wide Web WWW D-1
 Index-6