® 3Com Corporation PathBuilder™ S24x, 26x, and 27x Switch Installation Manual
Notice © 1998 3Com Corporation 5400 Bayfront Plaza Santa Clara, CA 95052-8145 (408) 326-5000 All rights reserved. Printed in U.S.A. Portions reprinted with the permission of Motorola, Inc. ® Restricted Rights Notification for U.S. Government Users The software (including firmware) addressed in this manual is provided to the U.S.
Notice (continued) Proprietary Material Information and software in this document are proprietary to 3Com (or its Suppliers) and without the express prior permission of an officer of 3Com, may not be copied, reproduced, disclosed to others, published, or used, in whole or in part, for any purpose other than that for which it is being made available. Use of software described in this document is subject to the terms and conditions of the 3Com Software License Agreement.
Contents Chapter 1. About the PathBuilder S24x, 26x, and 27x switch Applications .................................................................................................. Features and Protocols .................................................................................. Hardware Components ................................................................................. Enclosure .................................................................................................. Motherboard ...
Contents (continued) Chapter 4. Maintenance Removing/Replacing Top Cover .................................................................. Removing/Replacing Front Panel Cover ...................................................... Removing/Replacing Power Supply ............................................................. Removing/Replacing PathBuilder S24x, 26x, and 27x Switch Cards .......... Replacing PathBuilder S24x, 26x, and 27x Switch Motherboard ................
About This Manual Overview Introduction This manual describes features, hardware, specifications, and applications for the 3Com PathBuilder S24x, 26x and 27x switch. Audience This manual is intended for operators of the 3Com PathBuilder S24x, 26x and 27x switch. How to Use This Manual The following table describes the contents of this manual. This Chapter...
About This Manual (continued) Vorsicht Ein Vorsichtshinweis macht Sie darauf aufmerksam, daß Nichtbefolgung zu Software-, Hardware- oder Datenschäden führen kann. Warning Warning is the most serious notice, indicating that you can be physically hurt. Avertissement Un avertissement constitue le message le plus sérieux, indiquant que vous pouvez subir des blessures corporelles. Warnung Eine Warnung ist der ernsthafteste Hinweis auf Körperverletzungsgefahr.
Chapter 1 About the PathBuilder S24x, 26x, and 27x switch Overview What is the PathBuilder S24x, 26x, and 27x switch? The PathBuilder S24x, 26x, and 27x switch is a multi-protocol LAN/WAN PathBuilder S200 series switch featuring a high-speed processor and coprocessor coupled with 12 Mbytes of on-board memory (standard).
Meshed Cluster Application Support A unique feature of the PathBuilder S24x, 26x, and 27x switch is its ability to support full meshed cluster applications. This functionality provides host site resiliency, port count extension, and multiple LAN connectivity. Examples of how the features of the PathBuilder S24x, 26x, and 27x switch function in specific applications can be found the “Applications” section on page 1-3. Figure 1-1 shows a PathBuilder S24x, 26x, and 27x switch. ® Figure 1-1.
Applications Applications Introduction This section briefly describes several application examples for the PathBuilder S24x, 26x, and 27x switch. Performance Branch Nodes Because of its high performance capabilities, the PathBuilder S24x, 26x, and 27x switch can be employed in a variety of branch node applications. For example, the PathBuilder S24x, 26x, and 27x switch can support a mix of voice and data types, traditional legacy (SDLC, X.25, Bisync, Async, etc.), and LAN.
Applications Regional Concentrator In Figure 1-3, the public network (Frame Relay/X.25) is performing the branch concentration function with the PathBuilder S24x, 26x, and 27x switch routing the traffic to the appropriate end point. In Figure 1-4, the PathBuilder S24x, 26x, and 27x switch acts as the regional concentrators, receiving traffic from dozens and even thousands of remote sites, and concentrating the traffic before forwarding it to the correct location.
Applications Central Site High-Speed Link Branch 1 PB S200 PB S200 (Single Node or Cluster) Branch XX PB S200 PBX Host Figure 1-4. Regional Concentrator Example Cluster Application An important new feature available with the PathBuilder S24x, 26x, and 27x switch is its use in a cluster. This allows as many as four PathBuilder S24x, 26x, and 27x switches to act a single unit for the purposes of connectivity.
Applications 16 Access Ports 16 Access Ports 16 Access Ports 16 Access Ports PB S200 PB S200 PB S200 PB S200 High-Speed Network Links to other Sites or Backbone LAN Connectors Figure 1-5.
Features and Protocols Features and Protocols Description For a complete listing of the features and protocols supported by your PathBuilder S24x, 26x, and 27x switch, refer to the Software Release Notice that came with the operating software.
Hardware Components Hardware Components PathBuilder S24x, 26x, and 27x Switch Hardware Configuration The PathBuilder S24x, 26x, and 27x switch comes in a rack-mountable configuration. The switch contains a motherboard/CPU board, a built-in power supply, and an ISA bus for up to eight additional interface cards. The PathBuilder S24x, 26x, and 27x switch has three available serial ports, an Ethernet port, and a CTP port, FLASH memory, and battery-powered configuration backup.
Hardware Components Hardware Components This table lists and briefly describes the hardware components that make up the PathBuilder S24x, 26x, and 27x switch. More detailed descriptions of these components follow. Component Description Enclosure A rack-mount unit that contains all the PathBuilder S24x, 26x, and 27x switch processor cards. Back Panel Contains power outlets, power switch, communication ports, and slots for I/O cards.
Hardware Components Component DSPM with E&M Interface Ethernet Port 4 Limitations 1-10 Description (continued) The PathBuilder S26x switch Analog DSPM/E&M card allows the PathBuilder S26x switch to support up to two (2) voice/fax channels per card. Each E&M card occupies one ISA slot in the PathBuilder S26x switch. The PathBuilder S26x switch E&M card supports both two- and four-wire interfaces.
Hardware Components Enclosure Introduction This section provides detailed information about the parts of the PathBuilder S24x, 26x, and 27x switch enclosure. Front Panel The PathBuilder S24x, 26x, and 27x switch front panel (see Figure 1-6) has: • Three status LEDs • A 2-character numeric LED display • A RESET switch Status LEDs The three status LEDs are: • Power (green) — When on, indicates that power is on and all DC voltages are within specifications.
Hardware Components Motherboard Parts of the Motherboard This section describes some of the components that make up the PathBuilder S24x, 26x, and 27x switch motherboard. In addition, this section describes some of the daughtercards that can be found on the motherboard, shown in Figure 1-7.
Hardware Components FLASH SIMM The FLASH Single In-line Memory Module (SIMM) holds a compressed image of the operating software. This module is electrically erasable and reprogrammable. An optional FLASH SIMM can be installed for backup. These modules are installed in one of the SIMM slots (1 or 2). Figure 1-8 shows the SIMM. Figure 1-8. FLASH SIMM Note The chips on your SIMM may vary from the one shown inFigure 1-8.
Hardware Components Lithium Battery Figure 1-9. CMEM SIMM Expansion Port I/O Slots The PathBuilder S24x, 26x, and 27x switch motherboard has eight full-size expansion card slots (see Figure 1-6). Expansion I/O cards have I/O connectors that extend through the rear panel. Port numbers for the ports on the I/O cards have a fixed relationship to the chassis expansion slot number. Six port numbers are reserved for each slot.
Hardware Components How Ports Are Used The following table describes how the ports are used. Port Number Use 1, 2, and 3 Recommended for network port connection or cluster connectivity. Ports 1 and 2 have variable interfaces, depending on the DIMs. 4 Ethernet AUI port for routing applications. 6 Control Terminal Port (CTP). When operating as an asynchronous interface, it can support data rates up to 115.2 kbps.
Hardware Components Back Panel Back Panel Components The components of the back panel are: • Serial/Network I/O Ports. Ports 1, 2, 3, and 6 are DB-25 connectors. Port 4 is a DB 15 connector. • AC Power Supply. The rear of the Power Supply has two (male and female) power source connectors (one is for connection to an AC source and the other is an AC outlet) along with a selectable 115 VAC or 230 VAC switch. For most international usage, the switch must be set for 230 VAC. • DC Power Supply.
Hardware Components TI Dual Port Digital PBX Interface Card Introduction The T1 dual port digital PBX interface card supports digital voice communications, providing integrated network access. The T1 interface card is installed primarily in North America and Japan. A 2-megabyte T1 card is required for passing data and voice traffic.
Hardware Components Slot Restriction The T1 dual port digital PBX interface card occupies slot 8 in the PathBuilder S24x, 26x, and 27x switch chassis. DIP Switch Location The T1 dual port digital PBX interface card contains a single DIP switch bank (SW1) used to assign the card’s I/O base address. DIP Switch Settings Set the DIP switches on the T1 dual port digital PBX interface card as shown in Figure 1-11. T1/CSU Daughter Card The T1/CSU Daughtercard provides a 1.
Hardware Components LED Status Indicators The T1 dual port digital PBX interface card contains four LEDs that can be viewed through the rear bracket. LED Color Port 49 LED is... ...
Hardware Components E1 Dual Port Digital PBX Interface Card Introduction The E1 dual port digital PBX interface card supports digital voice communications, providing integrated network access (see Figure 1-12). The E1 interface card is installed primarily in Europe and South America. A 2-megabyte E1 card is required for passing data traffic and voice traffic.
Hardware Components E1 Dual Port Digital Figure 1-12 shows an example of the E1 dual port digital PBX interface card. PBX Interface Card Illustration 109 8 7 6 5 4 3 2 1 N O SW1 DIP Switch Bank MVIP Bus Interface Connector Port 49 Alarm LED Run LED Port 50 Alarm LED SysFail LED Port 49 Interface Port 50 Interface ISA Bus Interface Serial Diagnostic Port Pin 6 Pin 1 Figure 1-12.
Hardware Components Required cables The following cables, including two pigtail cables, ship with the E1 dual port digital PBX interface card and are required to cable the E1 card to the DSPM/SM cards in the PathBuilder S24x, 26x, and 27x switch node. Cable Description Function One 4-position 40-pin MVIP ribbon cable Connects up to three DSPM/SM cards to interconnect digital voice traffic between individual cards in the same PathBuilder S24x, 26x, and 27x switch node.
Hardware Components DSPM/SM Card Introduction The Digital Signal Processing Module/Server Module (DSPM/SM) supports T1 or E1 dual port digital PBX interface cards. Description The DSPM/SM card, used at nodes with digital PBX interfaces, compresses four digital voice channels. It has no external I/O capabilities.
Hardware Components DSPM/ SM Card Illustration Figure 1-13 shows an example of the DSPM/SM card. MVIP Bus Interface Connector Installed MVIP Clock Termination Jumpers Not Installed Figure 1-13. DSPM/SM Card Jumper Locations Figure 1-13 shows the location of jumpers on the DSPM/SM card that terminate the Multi-Vendor Integration Protocol clock. Installing Jumpers Figure 1-13 shows how to install the jumpers on the DSPM/SM card to terminate the Multi-Vendor Integration Protocol clock.
Hardware Components Cables Required No cables ship with the DSPM/SM card; however, the DSPM/SM card must be cabled to the T1 or E1 dual port digital interface using a Multi-Vendor Integration Protocol 40-pin ribbon cable, as Figure 1-14 shows. To support 12 voice channels, for instance, you need three DSPM/Server Module cards. Note: The DSPM/SM card with the jumpers set to the installed position must be located furthest away from the E1 or T1 card, the top card, as shown in this figure.
Hardware Components DSPM Card with Analog E&M Interface Introduction The DSPM/E&M card supports two analog E&M interface voice channels. Description The Analog DSPM/E&M card allows the PathBuilder S24x, 26x, and 27x switch to support up to two (2) voice/fax channels per card. Each E&M card occupies one ISA slot in the PathBuilder S24x, 26x, and 27x switch. The PathBuilder S24x, 26x, and 27x switch E&M card supports both two- and four-wire interfaces.
Hardware Components DSPM/E&M Card Illustration Figure 1-15 shows an example of the DSPM card with an analog E&M interface. MVIP Clock Termination Jumpers (Not Used) -48V Power Supply Connector Port 1 2-or 4-wire Jumpers Port 2 Complex Impedance Jumpers Port 1 RM Port 1 LC (Remote Busy) (Local Busy) Pin 8 Pin 1 Port 2 RM Port 2 LC (Remote Busy) (Local Busy) Figure 1-15.
Hardware Components LEDs The card contains four LEDs that can be viewed through the rear bracket. LED Port 1 Local Busy 1-28 Color LED is... ...
Hardware Components Setting Jumpers for DSPM Card with Analog E&M Interface Introduction The DSPM/EM card has a total of 12 jumpers that you can set for various applications if required: • Ten jumpers for two- or four-wire operation • Two jumpers for MVIP clock termination (not used at present) Default Jumper Settings The DSPM/EM card ships from the factory with the ten jumpers for two- or four-wire operation set to four-wire. Jumper Definitions Jumpers J11 through J15 are associated with Port 1.
Hardware Components Complex Impedance for UK and Germany Setting jumpers for two-wire UK complex and two-wire Germany complex impedance as noted in the “Jumper Definitions” section above, matches the impedance required in each country, respectively. Refer to Figure 1-15 and Figure 1-17. 370 620 .31µƒ Figure 1-16. UK Complex Impedance 220 820 .115µƒ Figure 1-17.
Hardware Components Jumper Locations Set the jumpers to the positions as shown in Figure 1-18. J15 4W J13 U G 2W 2W 4W J22 6 J21 C J12 J14 C J24 6 C 6 J23 G 2W 4W C 6 J11 U J25 J13 (Port 1) 2W J25 (Port 2) COM 600Ω J22 (Port 2) J23 (Port 2) 2W 4W COM 600Ω J11 J12 J21 (Port 1) (Port 1) (Port 2) 2W 4W 2W 4W 2W 2W UK Complex Germany Complex J15 (Port 1) 2W 2W UK Complex Germany Complex 2W 4W J14 (Port 1) J24 (Port 2) COM 600Ω COM 600Ω Figure 1-18.
Hardware Components DSPM Card with FXS Analog Interface Introduction The Analog DSPM/FXS (Foreign Exchange Station) card supports two analog FXS interfaces. Description The analog DSPM/FXS card allows the PathBuilder S24x, 26x, and 27x switch to support up to two voice/fax channels per card. Each DSPM/FXS card occupies one ISA slot in the PathBuilder S24x, 26x, and 27x switch.
Hardware Components DSPM/FXS Card Illustration Figure 1-20 shows an example of the DSPM card with an analog FXS interface. MVIP Clock Termination Jumpers (Not Used) -48V Power Supply Connector Port 1 Port 2 Port 1 RM Port 1 LC (Remote Busy) (Local Busy) Port 2 RM Port 2 LC (Remote Busy) (Local Busy) Pin 6 Pin 1 Figure 1-20.
Hardware Components LEDs The card contains four LEDs that can be viewed through the rear bracket. LED Port 1 Local Busy Color LED is... ...
Hardware Components DSPM Host Card with FXO Analog Interface Introduction The Analog DSPM/HC (host card) supports one analog FXO (Foreign Exchange Office) interface. The FXO is a daughtercard that is mounted onto the DSPM/HC. Description The analog FXO daughtercard (when mounted on the DSPM/HC) allows the PathBuilder S24x, 26x, and 27x switch to support one voice/fax channel per card. Each DSPM/HX with FXO daughtercard combination occupies one ISA slot in the PathBuilder S24x, 26x, and 27x switch.
Hardware Components DSPM/HC with FXO Figure 1-21 shows an example of the DSPM/HC with an analog FXO daughtercard. Card Illustration FXO Daughtercard Port 1 Port 1 (Remote Busy) (Local Busy) Port 2 Port 2 (Remote Busy) (Local Busy) Pin 6 Pin 1 Figure 1-21. DSPM/HC Card with Analog FXO Daughtercard LEDs The card contains four LEDs that can be viewed through the rear bracket. LED Port 1 Local Busy 1-36 Color LED is... ...
Hardware Components Jumper Locations The DSPM/HC with FXO daughtercard has no jumpers that must be set.
Hardware Components -48V Ringer/Power Supply Card and Enclosure Introduction One -48V ringer/power supply card and enclosure is required per PathBuilder S24x, 26x, and 27x switch node for • Analog DSPM/FXS cards • DSPM/E&M cards using interface signaling types II, III, and V. DSPM/E&M card with an interface signaling of type I does not require a -48V ringer/power supply card and enclosure.
Hardware Components Cables Required The -48V ringer/power supply card is shipped with one cable with six connectors. -48V Power Supply Connector (to each DSPM card) Ring Enable Jumper Must be Configured as Shown Jumper Set for 25 Hz Ring Frequency Jumper Set for 50 Hz Ring Frequency Power Connectors to Main AC Power Supply Status Connector Figure 1-22.
Hardware Components Ring Enable Jumper Must be Configured as Shown J11 Jumper Set for 25 Hz Ring Frequency J12 J11 J11 Jumper Set for 25 Hz Ring Frequency Jumper Locations Output Connectors Power Connectors to Main AC Power Supply Status Connector Figure 1-23.
Hardware Components 10BaseT Transceiver Description This transceiver is designed to provide Ethernet 10baseT support for the PathBuilder S24x, 26x, and 27x switch. It can accommodate different 10BaseT configurations through the user-selectable Signal Quality Error (SQE) function. See Figure 1-24. Some network devices do not recognize this signal. If the attached network device does not recognize this SQE signal, set the switch to Off. RJ45 Connector SQUE Switch 15-Pin D-Type Connector Figure 1-24.
Radio Frequency Interference Regulations Radio Frequency Interference Regulations Introduction This section explains the radio frequency interference regulations. FCC This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC rules, CISPR Publication 22:85 and EN 55022:87. These limits are designed to provide reasonable protection against interference when the equipment is operated in a commercial environment.
Telecommunications Regulations Telecommunications Regulations In the United States, FCC rules Part 68 require that the following user instructions are provided: The telephone company has the right to ask you for registration information about your equipment that is connected to the telephone line. When requested, you should provide your equipment’s FCC registration number and ringer equivalence number (REN), if applicable.
Telecommunications Regulations In Canada, the following equipment attachment limitations and information must be provided in the user instructions: The Canadian Department of Communications label identifies certified equipment. This certification means that the equipment meets certain telecommunications network protective operational and safety requirements. The Department does not guarantee the equipment will operate to the user’s satisfaction.
FCC and Telephone Company Procedures and Requirements FCC and Telephone Company Procedures and Requirements Introduction The following tables provide the information that is needed for ordering telephone company network connections for the 3Com PathBuilder S24x, 26x, and 27x switch V.22 bis modem. How to Order Connections in the U.S.A. Service Description PSTN-permissive USOC Jack Connector REN RJ11C Facility Interface Code 0.
FCC Information FCC Information Customer-Provided FCC regulations and telephone company procedures prohibit connection of customer-provided equipment to telephone company-provided coin service (central Telephone office-implemented systems). Connection to party lines is subject to state tariffs. Equipment Occasionally, the telephone company may make changes in their equipment, operations, or procedures.
FCC Information Regulations Concerning Electromagnetic Radiation The Federal Communications Commission (FCC) of the United States of America and the Industry and Science Canada (ISC) have published regulations that govern the allowable limits of emanation of radio frequency energy of computing devices and associated peripherals. These regulations are concerned with interference to radio communications, such as radio and television.
FCC Information 1-48 About the PathBuilder S24x, 26x, and 27x switch
Chapter 2 Preparation and Unpacking Overview Introduction This chapter summarizes information you need and activities you must complete before installing your PathBuilder S24x, 26x, and 27x switch system. It describes how to select an operating environment and how to unpack the enclosure.
Before Installing Your PathBuilder S24x, 26x, and 27x Switch Before Installing Your PathBuilder S24x, 26x, and 27x Switch Introduction Before installing your PathBuilder S24x, 26x, and 27x switch, be sure to complete the following steps: • Verify that the configuration worksheets are accurate and complete. Be sure that they are prepared beforehand according to your network requirements. • Be sure you have all the required information from your service provider.
Before Installing Your PathBuilder S24x, 26x, and 27x Switch Caution To avoid overheating the unit’s circuitry, you should never place anything on top of the unit, within one inch (2.5 cm) of the ventilation slots on the front panel, or within 12 inches (30.5 cm) of the back of the unit.
Unpacking Unpacking Introduction The PathBuilder S24x, 26x, and 27x switch’s printed circuit cards and other internal components are installed in the enclosure before the unit is shipped from the factory. In addition to the enclosure and its components, you may find within the shipping carton a sleeve containing the power cord (if appropriate for your installation). Checking the Equipment Thoroughly check the cartons and their contents for damage in shipment.
The PathBuilder S24x, 26x, and 27x Switch Rackmount Kit The PathBuilder S24x, 26x, and 27x Switch Rackmount Kit Introduction You can install the PathBuilder S24x, 26x, and 27x switch in a standard Electronics Industry Association (EIA) 19-inch equipment rack. EIA Rackmount Kit The PathBuilder S24x, 26x, and 27x switch EIA Rackmount kit contains the following components: • • • • • One Mounting Shelf Two adjustable Rear Mounting brackets for rear rail attachment Four Phillips-head 10-32 x .
The PathBuilder S24x, 26x, and 27x Switch Rackmount Kit Rackmount Kit Parts Figure 2-1 shows the components of the rackmount kit. 10-32 x .38 Screws with External Lock Washers (4) Mounting Shelf Adjustable Rear Mounting Bracket (2) Figure 2-1.
The PathBuilder S24x, 26x, and 27x Switch Rackmount Kit Preparation and Unpacking 2-7
Installing the PathBuilder S24x, 26x, and 27x Switch in an Equipment Rack Installing the PathBuilder S24x, 26x, and 27x Switch in an Equipment Rack How to... Follow these steps to install the PathBuilder S24x, 26x, and 27x switch in an equipment rack: Step 2-8 Action Description The base is attached by four Phillips-head screws coming up from the bottom, as shown in Figure 2-2. 1 Remove the plastic pedestal base that is attached to the PathBuilder S24x, 26x, and 27x switch. 2 See Figure 2-3, A.
Installing the PathBuilder S24x, 26x, and 27x Switch in an Equipment Rack Step 6 Preparation and Unpacking Action Remove the long (#6) screws. Then, slide the PathBuilder S24x, 26x, and 27x switch flush against the rear flange of the Mounting Shelf and reinsert the screws through the flange and into the unit’s case. Description The PathBuilder S24x, 26x, and 27x switch is now securely attached to the equipment rack and ready for connection to devices and power.
Installing the PathBuilder S24x, 26x, and 27x Switch in an Equipment Rack Removing the Pedestal Base Figure 2-2 shows how to remove the pedestal base from the PathBuilder S24x, 26x, and 27x switch. ® Remove the pedestal base by removing the four Phillips-head screws from the bottom. Figure 2-2.
Installing the PathBuilder S24x, 26x, and 27x Switch in an Equipment Rack Steps for Rackmount Assembly Figure 2-3 shows the steps for rackmount assembly. Equipment Rack Rail Adjustable Rear Mounting bracket C Bolt the Mounting Shelf to the Rear Mounting Brackets using the four 10-32 x .38 screws supplied with the kit. Do this by inserting the screws from inside the rack, through the Mounting Shelf slot, and through the appropriate hole in the Rear Mounting bracket. 10-32 x .
Installing the PathBuilder S24x, 26x, and 27x Switch in an Equipment Rack Installing the PathBuilder S24x, 26x, and 27x Switch Figure 2-4 shows the installation of the PathBuilder S24x, 26x, and 27x switch in the rackmount assembly. PathBuilder S24x, 26x, and 27x switch (Rear View) Mounting Shelf Note: Attached Rear Mounting brackets are not shown in this figure. A Remove the three case-fastening screws off the left rear (new bottom) of PathBuilder S24x, 26x, and 27x switch.
Chapter 3 PathBuilder S24x, 26x, and 27x Switch Hardware Installation Overview Introduction This chapter contains procedures for installing PathBuilder S24x, 26x, and 27x switch hardware components. The following warnings and cautions apply to all procedures described in this chapter: Caution Ports that are capable of connecting to other apparatus are defined as Safe Extra Load Voltage (SELV).
Avertissement Seules des personnes qualifiées peuvent mettre en pratique les procédures décrites dans cette section. Dans le cas contraire, des risques de blessures ou d’endommagement du matériel sont possibles, ce qui pourrait annuler votre garantie et votre contrat de maintenance. Warnung Die in diesem Abschnit aufgeführten Vorgänge sollten ausschließlich von geschultem und qualifiziertem Servicepersonal durchgeführt werden.
Setting DIP Switches Setting DIP Switches Introduction This section explains how to set the DIP switches for the motherboard and the Serial Data Board (SDB) card. Motherboard Components Figure 3-1 is an illustration of the PathBuilder S24x, 26x, and 27x switch motherboard showing the location of the switches. Port 1 Port 2 Port 3 Port 4 Port 6 1 2 3 Port 1 4 5 DIMs 6 7 Port 2 8 Switch 2 Switch 1 Figure 3-1.
Installing the DSU DIM Installing the DSU DIM Introduction You can install up to two DSUs for each PathBuilder S24x, 26x, and 27x switch platform using both Ports 1 and 2. DSU DIM Example Figure 3-2 shows how to install the DSU DIM. DSU DIM Top of Unit It is important that the square markings on the DIM are on the same side as the round markings on the board. Port 1 DTE DCE DTE DCE Port 2 Figure 3-2.
Installing the DSU DIM Install the DSU DIM Perform these steps to install the DSU DIM: Step Action 1 Install the DSU DIM in the DTE position only (see Figure 3-2). 2 Set the switches properly. Refer to “Switch Settings for Motherboard Switches 1 and 2.” 3 Plug the EIM into the backplane connector corresponding to the DIM port containing the DSU DIM (Port 1 or 2). Verify that the EIM is only connected to a port that has a DSU DIM installed.
Installing the DSU DIM Switch Blocks 1 and 2 The PathBuilder S24x, 26x, and 27x switch Integral DSU option requires that you set the same switches in the switch blocks as you do for the V.35, V.36, and X.21 interfaces. These are the switch settings for the motherboard switches 1 and 2. Switch Settings Set Switch... 1-5 6-8 To.... OFF ON For... V.11, V.35, V.
Configuring the PathBuilder S24x, 26x, and 27x Switch for DSU Operation Configuring the PathBuilder S24x, 26x, and 27x Switch for DSU Operation Configuration Procedure Perform these steps from the CTP to configure the PathBuilder S24x, 26x, and 27x switch for DSU operation: Step Action 1 Refer to the PathBuilder S200 Series Basic Protocols.
DSU Input and Output Signaling DSU Input and Output Signaling Introduction Input and output signaling information is useful as a debugging tool and replaces the EIA summary information associated with other DIM types. Input Signals This table describes the input signals. NIS Not In Service This signal is normally low (L). If no signal is received, or the DSU option is in DSU Loopback mode, or if idle codes are received, NIS is listed as high (H).
DSU Input and Output Signaling Signal Description (continued) CL CSU Loopback When this signal is “L”, the DSU hardware is looping the remote connection's receive to transmit. IDL Idle An “H” on this signal tells the DSU hardware to send idle bipolar violations to the remote system. CLK Clock Mode The signal “H” denotes the use of the network clock. The DSU option provides the clock when this signal is “L”. You can view these signals using the control terminal Monitor menu item on the Main menu.
DSU Input and Output Signaling Control Terminal Loopback Options 3-10 These are the control terminal loopback options. DSU Internal Loopback This loopback mode does not affect the external interface but it does loop the local transmit data back to the receive data within the EIM. This test is useful for verifying that the EIM is connected and is working properly from a digital integrity perspective.
Troubleshooting DSU Installation Troubleshooting DSU Installation Introduction Some potential DSU installation problems are: • • • • • • • CTP Troubleshooting If Problems Arise Installing the DSU Improper port connection of the EIM. Improper telephone company interface connection. The DSU DIM is not connected in DTE configuration. The motherboard switches are not in the proper positions. The DSU option Software is not operational. The DSU port clock source option is not correct.
Installing DIMs Installing DIMs Introduction There are two Data Interface Modules (DIMs) on both the PathBuilder S24x, 26x, and 27x switch motherboard. Each DIM is a 64-pin, dual in-line module that can be repositioned so that Ports 1 or 2 act as either DCE or DTE ports. One DIM corresponds to Port 1 and the other to Port 2. The DIMs on the motherboard are factory set in the DTE position. Example Figure 3-4 shows an example of installing a DIM.
Installing DIMs Installing a DIM To install the DIM, insert it into the desired DTE or DCE location. Be sure the pins are seated firmly in the sockets and are not bent. Caution Some components used in the PathBuilder S24x, 26x, and 27x switch are sensitive to static electric discharges; static electric discharges can cause damage to internal components. Use proper handling and grounding precautions whenever handling cards and components.
Installing SIMMs Installing SIMMs Introduction This section explains how to install different types of SIMMs on the motherboard. • DRAM: There are two types of DRAM: - Global DRAM: This is memory that is accessible by all the boards in the PathBuilder S24x, 26x, and 27x switch. - Processor DRAM: This is memory dedicated to the PathBuilder S24x, 26x, and 27x switch’s processor. The PathBuilder S24x, 26x, and 27x switch motherboard comes with 8 Mbytes of Processor DRAM and 4 Mbytes of Global DRAM.
Installing SIMMs SIMM Location Figure 3-5 shows the location of the Single In-line Memory Module (SIMM) slots on the PathBuilder S24x, 26x, and 27x switch motherboard. Insert SIMM into socket at a slight angle. Data Compression SIMM Optional Flash SIMM Locking Tabs DRAM Processor Slots CMEM SIMM Slot FLASH Optional FLASH CMEM Global DRAM SIMM Slot Data Compression SIMMs Motherboard Figure 3-5.
Installing I/O Cards Installing I/O Cards Introduction These PathBuilder S24x, 26x, and 27x switch I/O cards are installed into slots 1 through 8: • Serial Data Board (SDB) • BRI • Hub The Modem card can only be installed into slot 1. Installing an I/O Card Perform these steps to install any of the I/O cards: Step 3-16 Action 1 Align the card and the appropriate slot. 2 Insert the card, making the proper connection on the motherboard.
Installing a T1 or E1 Dual Port Digital PBX Interface Card Installing a T1 or E1 Dual Port Digital PBX Interface Card Introduction This section provides installation instructions for the T1 or E1 dual port digital PBX interface card for the PathBuilder S24x, 26x, and 27x switch. It also provides a section on installing a T1/CSU Daughter card onto the T1 Dual Port Card.
Installing a T1 or E1 Dual Port Digital PBX Interface Card Step 3-18 Action 1 Place the interface card on an antistatic mat. 2 Set the I/O base address for the card using the DIP switches at SW1. 3 Power down the PathBuilder S200 series switch by unplugging the AC power plug. 4 Remove the cover from the PathBuilder S24x, 26x, and 27x switch as shown in Figure 4-1 on page 4-4. 5 Use expansion slot 8.
Installing a T1 or E1 Dual Port Digital PBX Interface Card Installing the T1/CSU Daughter Card Introduction This section explains how to install a T1/CSU Daughter Card onto a T1 Dual Port Card. When installing the T1/CSU card be certain that the T1 Dual Port card is not next to an FXO, FXS, or E&M card. Because these cards have components on both sides, they might come in contact with the T1/CSU card, damaging both cards.
Installing a T1 or E1 Dual Port Digital PBX Interface Card Installation Procedure 3-20 Follow these steps to install the T1/CSU Daughter card. Step Action 1 Power down the PathBuilder S200 series switch by unplugging the AC power plug. 2 Remove the cables from the rear of the T1 Dual Port Interface card. 3 Remove the cover from the PathBuilder S24x, 26x, and 27x switch as shown in Figure 4-1 on page 4-4. 4 Use a screw driver to loosen the bracket screw and remove the T1 Dual Interface card.
Installing a T1 or E1 Dual Port Digital PBX Interface Card 2 Carefully install Daughtercard Pins into T1 Dual Port Interface Connector. 1 Remove Jumper from Socket Figure 3-6.
Cabling the PathBuilder S24x, 26x, and 27x Switch Cabling the PathBuilder S24x, 26x, and 27x Switch Introduction This section describes the connections for: • • • • • Control Terminal Port (CTP) I/O Interface cards Network Manager LAN An external power source CTP Connection The CTP is set as Port 6 on the rear of the PathBuilder S24x, 26x, and 27x switch. It is a fixed EIA 232-D DCE interface terminating on a DB-25 connector. No special cabling is required.
Installing the Transceiver Installing the Transceiver Introduction The transceiver mounts to the DB-15 AUI connector of the Ethernet LAN card or to the DB-15 AUI connector on the back panel. The Thin-Net BNC connector provides subsequent interface to the coaxial network. The SQE can be turned ON and OFF by setting a switch on the side of the housing. Note The transceiver is shipped with the SQE set to the OFF position. Transceiver Illustration Figure 3-7 shows a transceiver.
Power-Up Diagnostics/Verification Power-Up Diagnostics/Verification Introduction Diagnostics run when a node is powered up. Basic tests are run from PROM and more extensive diagnostics are run during startup. If the node detects a lack of software, it sends a message to the CTP. The yellow LED lights and a 2-digit code is displayed. You must initiate a software coldload if needed. Power Up Sequence This is the power-up sequence.
Power-Up Diagnostics/Verification Default Node Command A default node command is the same as a warmstart, except it is only initiated by the operator. The Current configuration bank in nonvolatile CMEM memory is erased and replaced by the system default configuration. Setting Node to Default Configuration You can set a node to the default configuration by choosing the Default Node selection from the CTP Main menu.
Installing Software Options Installing Software Options Introduction 3-26 The PathBuilder S24x, 26x, and 27x switch contains all the software options available for the current release of the product. In some cases, the options have already been enabled. However, in other cases, the option you want to use needs to be enabled. Refer to the latest Software Release Notice for more information.
Full Mesh Cluster Cabling Full Mesh Cluster Cabling Introduction This section explains some of the important points to keep in mind when using your PathBuilder S24x, 26x, and 27x switches in a full mesh cluster configuration. Usage A full mesh application uses standard networking ports on the PathBuilder S24x, 26x, and 27x switch (ports 1, 2, and 3) and standard networking protocols appropriate for your application (X.25, Voice Relay, etc.).
Full Mesh Cluster Cabling Mesh Diagram Figure 3-8 shows how a full mesh application is cabled. PB S200 (Rear View) Port 1 (T) Port 2 (T) PB S200 (Rear View) Port 3 (T) Port 1 (C) Port 2 (C) PB S200 (Rear View) Port 3 (T) Port 1 (C) T =DTE Port C=DCE Port Port 2 (C) PB S200 (Rear View) Port 3 (T) Port 1 (C) Port 2 (C) Port 3 (T) Figure 3-8.
Chapter 4 Maintenance Overview Introduction This chapter contains procedures to remove/replace the PathBuilder S24x, 26x, and 27x switch components. Warning Only trained, qualified technicians should perform procedures outlined in this manual. 3Com PathBuilder S200 series switch daughtercards and DIMs are sensitive to static discharge, which can damage components.
Vorsicht Einige im PathBuilder S24x, 26x, and 27x switch verwendeten Komponenten sollten keinen elektrostatischen Entladungen ausgesetzt werden, durch die interne Bauteile beschädigt werden können. Wenden Sie die entsprechenden Maßnahmen zur Erdung und zum Schutz vor statischen Ladungen bei der Handhabung von Karten und Komponenten an.
Removing/Replacing Top Cover Removing/Replacing Top Cover Introduction You must remove the top cover to access the motherboard and all I/O cards, the power supply, and the fan. Removing the Cover Perform these steps to remove the top cover of the PathBuilder S24x, 26x, and 27x switch: Step Maintenance Action 1 Verify that the power is OFF. 2 Remove the six screws from the back of the chassis (Figure 4-1 ). 3 Pull the cover toward the rear of the unit (approximately 1/4 inch).
Removing/Replacing Top Cover Example Figure 4-1 shows an example of removing the top cover of the PathBuilder S24x, 26x, and 27x switch. Pull cover 1/4-in. toward rear. Lift cover. Remove six screws. Figure 4-1. Removing the Top Cover Replace the Cover 4-4 To replace the top cover, reverse the steps just detailed in “Removing the Cover.
Removing/Replacing Front Panel Cover Removing/Replacing Front Panel Cover Introduction This section describes how to remove the front panel cover. The auxiliary fan is attached to the front panel cover. Remove the Front Panel Cover Perform these steps to remove the front panel cover: Step Maintenance Action 1 Verify that the power is OFF. 2 Remove the top cover as shown in Figure 4-1. 3 Remove the ribbon cable connecting the LED display card to the motherboard.
Removing/Replacing Front Panel Cover Example Figure 4-2 shows an example of disconnecting the front panel cover. Front Panel Cover Thumbscrew LED Display Card Ribbon Cable Auxiliary Fan Figure 4-2.
Removing/Replacing Power Supply Removing/Replacing Power Supply Introduction This section describes how to remove the power supply. Remove the Power Perform these steps to remove the power supply: Supply Step Action 1 Verify that the power is OFF by disconnecting the power cord. 2 Remove the top cover (refer to Figure 4-1 ). 3 At the rear of the unit, remove the four screws attaching the power supply to the back of the chassis (Figure 4-3 ).
Removing/Replacing Power Supply Example Figure 4-3 shows an example of removing the power supply. Remove the Two Holding Screws on Inside and Slide Power Supply Out DC Power Supply Support Bar Terminal Block Positive Wire ® Negative Wire Power Supply Cables (P1/P2) Remove the Four Holding Screws on the Rear Panel Figure 4-3.
Removing/Replacing PathBuilder S24x, 26x, and 27x Switch Cards Removing/Replacing PathBuilder S24x, 26x, and 27x Switch Cards Introduction This section describes how to remove the PathBuilder S24x, 26x, and 27x switch cards. The I/O cards are located in seven full-size and one half-size slots on the motherboard. Removing an Expansion Card Follow these steps to remove an expansion card: Step Maintenance Action 1 Verify that the power is OFF by removing the power cord.
Removing/Replacing PathBuilder S24x, 26x, and 27x Switch Cards Example Figure 4-4 shows an example of removing the support bar. ® Turn latch 1/4 turn. Support Latch Bar Figure 4-4.
Removing/Replacing PathBuilder S24x, 26x, and 27x Switch Cards Example Figure 4-5 shows an example of removing an expansion card. ® Holding Screws Gently pull card from connectors and slide it out. Figure 4-5. Removing an Expansion Card Replacing a Card Maintenance To replace an expansion card, reverse the steps just detailed in “Removing an Expansion Card.
Replacing PathBuilder S24x, 26x, and 27x Switch Motherboard Replacing PathBuilder S24x, 26x, and 27x Switch Motherboard Introduction You must first remove all the expansion cards in order to gain access to the motherboard. Removing the Motherboard Perform these steps to remove the motherboard: Step 4-12 Action 1 Verify that the power is OFF by removing the power cord. 2 Remove the unit’s top cover (refer to Figure 4-1 ). 3 Remove the support bar from the chassis.
Replacing PathBuilder S24x, 26x, and 27x Switch Motherboard Example Figure 4-6 shows an example of removing the motherboard. Swing motherboard out and lift from enclosure. Remove screws. Figure 4-6. Removing the Motherboard Install the Motherboard Maintenance To replace the motherboard, reverse the steps just detailed in “Removing the Motherboard.
Removing/Replacing the Lithium Battery Removing/Replacing the Lithium Battery Introduction The 3-volt lithium battery on the CMEM card maintains the node’s configuration memory in the event of a power failure. Warning Only qualified service personnel should perform the procedure described in this section. Use of this procedure by unqualified personnel could result in personal injury or equipment damage, and could jeopardize your warranty and maintenance agreement.
Removing/Replacing the Lithium Battery Example Figure 4-7 shows an example of removing the lithium battery. Figure 4-7.
Removing/Replacing the Lithium Battery 4-16 Maintenance
Chapter 5 Channelized Data Overview What Is It? The Channelized Data option provides an alternative to using Serial Data Boards (SDB) to concentrate data traffic from remote nodes attached to the PathBuilder S24x, 26x, and 27x switch through a multiplexer. Using one T1 or E1 card installed in a PathBuilder S24x, 26x, and 27x switch, Channelized Data supports a greater number of port connections between the PathBuilder S24x, 26x, and 27x switch and remote nodes than allowed is by SDBs.
Application Example Application Example Overview Figure 5-1 shows a typical Channelized Data application where multiple remote LAN sites feed into a cluster of PathBuilder S24x, 26x, and 27x switch Regional Concentrators. The PathBuilder S24x, 26x, and 27x switch cluster concentrates the traffic and passes it on to multiple hosts. LLC2.
Configuring Channelized Data Configuring Channelized Data Overview Before you can use the Channelized Data option on your PathBuilder S24x, 26x, and 27x switch, you must configure the node for Channelized Data operation. This section describes how to set up your PathBuilder S24x, 26x, and 27x switch for Channelized Data operation.
Configuring Channelized Data 5-4 Channelized Data
Configuring Channelized Data Configuring T1 and E1 Physical Ports Introduction You have to configure the physical ports for the T1/E1 connections between the remote nodes and the PathBuilder S24x, 26x, and 27x switch. T1/E1 physical ports are configured as ports 49 and 50 on the PathBuilder S24x, 26x, and 27x switch. You can configure up to two T1 or E1 ports per node. There is an overall limitation of 30 Channelized Data ports for a T1 or E1 card installed in a node.
Configuring Channelized Data Port Record Figure 5-2 shows the navigational path to the T1 and E1 configuration parameters. ‘ Node: nodename Address: (blank) Menu: Configure Date: ___________Time:__________ Path: (Main.6) 1. Node 2.
Configuring Channelized Data T1 Port Parameters Overview This section describes the T1 port parameters in detail. Configuration Guidelines Configure a T1 Port before configuring a Virtual Port Mapping Record, which maps a logical timeslot channel (a virtual port) to that port. Port Record Parameters The following parameters are available from the T1 port record.
Configuring Channelized Data Line Coding Type (continued) Description: Selects type of zero suppression used on the T1 link. • B8ZS: Consecutive 8 zero suppression (clear channel) • B7ZS: Stuffing: (56k x N) • AMI: Alternate mark inversion (user equipment must maintain density) Transmit Clock Range: INT, REC Default: INT Description: Selects the source of transmit clock. • INT: Internal Oscillator • REC: Received Timing Note Only one T1 port on the card can be selected for REC timing.
Configuring Channelized Data Threshold Value LES Range: 1 to 255 Default: 10 Description: Specifies the number of errors that must occur within a fixed 15- minute window before an alarm is declared. This is based on the threshold value for Line Error Seconds, which are seconds in which one or more line code violation error events are detected.
Configuring Channelized Data Threshold Value-ES Range: 1 to 255 Default: 10 Description: Specifies the number of errors that must occur within a fixed 15- minute window before an alarm is declared.
Configuring Channelized Data Threshold Value-SES Range: 1 to 255 Default: 10 Description: Specifies the number of errors that must occur within a fixed 15- minute window before an alarm is declared. This is based on the threshold value for Severely Error Seconds.
Configuring Channelized Data Threshold Value UAS 5-12 Range: 1 to 255 Default: 1 Description: Specifies the number of errors that must occur within a fixed 15- minute window before an alarm is declared. This is based on the threshold value for Unavailable Seconds.
Configuring Channelized Data E1 Port Parameters Introduction This section describes the E1 port parameters in detail. The E1 Port Record contains parameter values that you use to define operating characteristics for an E1 dual port digital interface card. Configuration Guidelines Configure an E1 port before configuring a Virtual Port Mapping Record, which maps a logical timeslot channel (a virtual port) to that port.
Configuring Channelized Data Line Impedance Range: 75, 120 Ω Default: 120 Ω Description: Defines the line impedance as 75 Ω or 120 Ω Transmit Clock Range: INT, REC Default: INT Description: Selects the source of transmit clock. • INT: From Internal Oscillator • REC: Transmit Clock is derived from Receive Clock Note Only one E1 port on the card can be selected for REC timing.
Configuring Channelized Data Threshold Value-CSS Range: 1 to 255 Default: 10 Description: Specifies the number of errors that must occur within a fixed 15- minute window before an alarm is declared. This is based on the threshold value for Controlled Slip Seconds, which are onesecond intervals containing one or more controlled slips.
Configuring Channelized Data Threshold Value-SES Range: 1 to 255 Default: 10 Description: Specifies the number of errors that must occur within a fixed 15- minute window before an alarm is declared. This is based on the threshold value for Severely Error Seconds.
Configuring Channelized Data Threshold Value UAS Channelized Data Range: 1 to 255 Default: 1 Description: Specifies the number of errors that must occur within a fixed 15- minute window before an alarm is declared. This is based on the threshold value for Unavailable Seconds.
Configuring Channelized Data Configuring Virtual Ports on the PathBuilder S24x, 26x, and 27x Switch Introduction You have to configure a virtual port for each connection between the remote nodes and the PathBuilder S24x, 26x, and 27x switch. How to... Follow these steps to configure virtual ports between the remote nodes and the PathBuilder S24x, 26x, and 27x switch. Step Booting Virtual Ports Action Result 1 From the CTP Main menu, select Configure -> Ports.
Configuring Channelized Data Virtual Port Record Figure 5-3 shows how to navigate the CTP hierarchy to the Port record. The Port Number and Port Type parameters are always the first two parameters that appear in the Port record. Node: nodename Address: (blank) Date: ___________Time:__________ Menu: Configure Path: (Main.6) 1. Node 2. Port Port Number: 100 - 254 Port Type: X25 or FR Figure 5-3.
Configuring Channelized Data Configuring Virtual Port Mapping Table Introduction A T1 or E1 digital port comprises multiple logical data channels. These channels, known as virtual ports, are not associated with any physical slot number and have no physical I/O of their own. Before You Begin Obtain the timeslot assignments for all the remote nodes connecting to the PathBuilder S24x, 26x, and 27x switch from your network services provider.
Configuring Channelized Data Configuring the Virtual Mapping Table Perform this procedure to configure the Virtual Port Mapping Table. Step Virtual Port Mapping Table Parameters Action Result 1 From the CTP Main menu, select Configure. The Configure menu appears. 2 Select Virtual Port Mapping Table from the Configure menu. The first parameter appears— Virtual Port Number—as shown in Figure 5-4. 3 Enter a value for each parameter. The next parameter appears.
Configuring Channelized Data Time Slots Range: 1 to 31 Default: 1 Description: Each time slot provides a 64k channel to pass traffic. Specify the time slot assignment for the logical channel: • 1 to 24 for T1 port type • 1 to 31 for E1 port type; 16 is not allowed Boot Type: Changes to this parameter require a Node boot to take effect. DS0 Rate 5-22 Range: 56k, 64k Default: 56k Description: Specify the DS0 Rate. This sets the rate of speed for each time slot.
Appendix A Cables Overview Introduction The tables in this appendix describe the pinouts for ports on the PathBuilder S24x, 26x, and 27x switch. Cable pinouts for Ethernet and LAN cables are also provided. The following table shows EIA 232-D signals with V.24 DIMs on the motherboard and SDB cards.
The following table shows V.35/V.36 signals with V.35/V.36 DIMs on the motherboard. V.35/V.
The following table shows V.35/V.36 signals with V.35/V.36 DIMs on the SDB card. V.35/V.
The following table shows V.11 signals with V.11 DIMs on the motherboard. V11 Signals (Motherboard) Pin A-4 DCE Position V.
The following table shows V.11 signals with V.11 DIMs on the SDB card. V11 Signals (SDB) Pin DCE Position V.
Ethernet Cable Pinouts Ethernet Cable Pinouts Introduction This cable may have a maximum length of up to 100m and must conform to the 802.3 10BaseT specification, with a nominal impedance of 100 ohms. Category 3, 4, or 5 cable may be used. Category 4 or 5 is preferred. Additional Information Refer to ANSI/TIA/EIA 568A and the following references: Ethernet RJ-45S Connector Signals The following table shows the Ethernet RJ-45S connector signals.
Ethernet Cable Pinouts Pin Cables Signal 12 Receive- 13 +12V 14 Shield A-7
Ethernet Cable Pinouts A-8 Cables
Appendix B PathBuilder S24x, 26x, and 27x Switch Specifications Overview The following sections list the physical, electrical, and environmental specifications for the PathBuilder S24x, 26x, and 27x switch. Physical Specifications Height: 17.8 in. (45.3 cm) Width: 10.0 in. (25.5 cm) Depth: 16.8 in. (42.8 cm) Weight: (fully configured) 27.5 lb (12.
B-2 PathBuilder S24x, 26x, and 27x Switch Specifications
Appendix C PathBuilder S24x, 26x, and 27x Switch Error Codes Overview Numeric LED Display The 2-character numeric LED display provides system diagnostic codes to assist in troubleshooting. When the Service LED is ON, a 2-digit code on the numeric LED display corresponds to a certain event or failure. Status Display Error Codes The following table lists the codes that may appear.
Numeric Display (continued) Status LED Service LED Description/Comments 48 OFF ON FLASH write failure 49 OFF ON Read error on Port 6 60 OFF ON Local DRAM exhausted 8.8. ON OFF PBIST (~3 seconds) (Blank) OFF OFF PBIST lamp-off test (~.
Appendix D Technical Support 3Com provides easy access to technical support information through a variety of services. This appendix describes these services. Information contained in this appendix is correct at time of publication. For the very latest, 3Com recommends that you access the 3Com Corporation World Wide Web site.
3Com Bulletin Board Service The 3Com BBS contains patches, software, and drivers for 3Com products. This service is available through analog modem or digital modem (ISDN) 24 hours a day, 7 days a week. Access by Analog Modem To reach the service by modem, set your modem to 8 data bits, no parity, and 1 stop bit.
If you are unable to contact your network supplier, see the following section on how to contact 3Com. Support from 3Com If you are unable to obtain assistance from the 3Com online technical resources or from your network supplier, 3Com offers technical telephone support services. To find out more about your support options, please call the 3Com technical telephone support phone number at the location nearest you.
Returning Before you send a product directly to 3Com for repair, you must first obtain a Return Products for Repair Materials Authorization (RMA) number. Products sent to 3Com without RMA numbers will be returned to the sender unopened, at the sender’s expense.
Index Numerics 10 Base 2 Transceiver 1-9 10 Base T Transceiver 1-41 3Com bulletin board service (3Com BBS) D-2 3Com URL D-1 3ComFacts D-2 -48V Ringer/Power Supply Card and Enclosure cables required 1-39 description 1-38 example of (figure) 1-38 jumpers definitions 1-38 installing 1-38 locations 1-38 A Alarms Channelized Data 5-1 Application Example cluster 1-5 Performance Branch Node 1-3 Regional Concentrator 1-4 Audience vii B Back Panel 1-16 Battery, lithium removing/replacing 4-14 BPV bilpolar violation
cables required 1-26 description 1-10, 1-26 example of (figure) 1-27 functions provided 1-26 jumpers defaults 1-29 definitions 1-29 for UK and Germany two-wire complex impedance 1-30 installing 1-31 locations 1-31 DSPM/FXS Card cables required 1-32 description 1-32 example of (figure) 1-33, 1-36 functions provided 1-9, 1-32 DSPM/HC Card with FXO Interface description 1-35 example of (figure) 1-36 function 1-35 jumpers 1-37 LEDs 1-36 DSPM/SM Card cables required 1-25 cabling to T1/E1 cards 1-25 description 1
transceiver 3-23 Installing T1 dual port digital PBX interface card 3-17 INT providing clock to the network 3-7 J Node restarts 3-24 warmstart 3-24 Node coldstart 3-24 Node statistics 3-11 Numeric LED Display 1-11, C-1 O Jumpers on -48V ringer/power supply card definitions 1-38 installing 1-38 locations 1-38 on DSPM/E&M card defaults 1-29 definitions 1-29 for UK complex and two-wire Germany complex impedance 1-30 installing 1-31 locations 1-31 on DSPM/SM card installing 1-24 locations 1-24 L LAN Connectio
Power Supply 1-11 removing/replacing 4-7 R Rack-Mount configuration 1-8 installation 2-5, 2-8 parts 2-6 Radio Frequency Interference Regulations 1-42 RAM 1-12 installation 3-14 Regional Concentrator Example 1-4 Removing Pedestal Base 2-10 SIMMs 3-15 Removing/Replacing cover 4-3 Front Panel Cover 4-5 Lithium Battery 4-14 PathBuilder S24x, 26x, and 27x Switch Cards 4-9 Power Supply 4-7 Replacing PathBuilder S24x, 26x, and 27x switch Motherboard 4-12 Reset Switch 1-11 returning products for repair D-4 RFI Regu
disabling 5-18 W Warm Restart 3-24 World Wide Web (WWW) D-1 Index-5
Index-6
