3Com S26x, S27x, S24x User Manual
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 manu al is provided to the U.S.
Government under agreement which grants the government the minimum “restricted rights”
in the software, as defined in the Federal Acquisition Regulatio n (FAR) or the Defense
Federal Acquisition Regulation Supplement (DFARS), whichever is applicable.
If the software is procured for use by the Department of Defense, the following legend
applies:
Restricted Rights Legend
Use, duplication, or disclosure by the Government
is subject to restrictions as set forth in
subparagraph (c)(1)(ii) of the
Rights in Technical Data and Computer Software
clause at DFARS 252.227 -70 13 .
®
If the software is procured for use by any U.S. Government entity other than the Department
of Defense, the following notice applies:
Notice
Notwithstanding any other lease or license agreement that may pertain to,
or accompany the delivery of, this computer software, the rights of the
Government regarding its use, repr odu cti o n, and disclos ure are as set forth
in F A R 52.227 -19 (C ).
Unpublished - rights reserved under the copyright laws of the United States.
Notice (continued)
Proprietary Material
Information and software in this document are proprietary to 3C om (or its Suppliers) and
without the express prior permission of an officer of 3Com, may not be copied, reproduced,
disclosed to others, publi shed, or used, in whol e or in part , for any purpos e other t han 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.
This document is for information purposes only and is subject to change without notice.
Part No. T0004, Rev. F
First Printing October 1998
Manual is current for Release 5.2M.
Contents
Chapter 1. About the PathBuilder S24x, 26x, and 27x switch
Applications .................................................................................................. 1-3
Features and Protocols .................................................................................. 1-7
Hardware Components ................................................................................. 1-8
Enclosure .................................................................................................. 1-11
Motherboard ............................................................................................. 1-12
Back Panel ................................................................................................ 1-16
TI Dual Port Digital PBX Interface Card ................................................. 1-17
E1 Dual Port Digital PBX Interface Card ................................................ 1-20
DSPM/SM Card ....................................................................................... 1-23
DSPM Card with Analog E&M Interface ................................................ 1-26
Setting Jumpers for DSPM Card with Analog E&M Interface ................ 1-29
DSPM Card with FXS Analog Interface .................................................. 1-32
DSPM Host Card with FXO Analog Interface ........................................ 1-35
-48V Ringer/Power Supply Card and Enclosure ..................................... 1-38
10BaseT Transceiver ................................................................................ 1-41
Radio Frequency Interference Regulations .................................................. 1-42
Telecommunications Regulations ................................................................. 1-43
FCC and Telephone Company Procedures and Requirements ..................... 1-45
FCC Information .......................................................................................... 1-46
Chapter 2. Preparation and Unpacking
Before Installing Your PathBuilder S24x, 26x, and 27x Switch .................. 2-2
Unpacking ..................................................................................................... 2-4
The PathBuilder S24x, 26x, and 27x Switch Rackmount Kit ...................... 2-5
Installing the PathBuilder S24x, 26x, and 27x Switch in an Equipment Rack 2-8
Chapter 3. PathBuilder S24x, 26x, and 27x Switch Hardware Installation
Setting DIP Switches .................................................................................... 3-3
Installing the DSU DIM ............................................................................... 3-4
Configuring the PathBuilder S24x, 26x, and 27x Switch for DSU Operation 3-7
DSU Input and Output Signaling ................................................................. 3-8
Troubleshooting DSU Installation ................................................................ 3-11
Installing DIMs ............................................................................................. 3-12
Installing SIMMs .......................................................................................... 3-14
Installing I/O Cards ...................................................................................... 3-16
Installing a T1 or E1 Dual Port Digital PBX Interface Card ........................ 3-17
Installing the T1/CSU Daughter Card ...................................................... 3-19
Cabling the PathBuilder S24x, 26x, and 27x Switch ................................... 3-22
Installing the Transceiver ............................................................................. 3-23
Power-Up Diagnostics/Verification .............................................................. 3-24
Installing Software Options .......................................................................... 3-26
Full Mesh Cluster Cabling ............................................................................ 3-27
v
Contents (continued)
Chapter 4. Maintenance
Removing/Replacing Top Cover .................................................................. 4-3
Removing/Replacing Front Panel Cover ...................................................... 4-5
Removing/Replacing Power Supply ............................................................. 4-7
Removing/Replacing PathBuilder S24x, 26x, and 27x Switch Cards .......... 4-9
Replacing PathBuilder S24x, 26x, and 27x Switch Motherboard ................ 4-12
Removing/Replacing the Lithium Battery .................................................... 4-14
Chapter 5. Channelized Data
Application Example .................................................................................... 5-2
Configuring Channelized Data ..................................................................... 5-3
Configuring T1 and E1 Physical Ports ..................................................... 5-5
T1 Port Parameters .......................................................................... ......... 5-7
E1 Port Parameters .......................................................................... ......... 5-13
Configuring Virtual Ports on the PathBuilder S24x, 26x, and 27x Switch 5-18
Configuring Virtual Port Mapping Table ................................................. 5-20
Appendix A. Cables
Ethernet Cable Pinouts ................................................................................. A-6
Appendix B. PathBuilder S24x, 26x, and 27x Switch Specifications
Appendix C. PathBuilder S24x, 26x, and 27x Switch Error Codes
Appendix D. Technical Support
Index
vi
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... Describes:
Chapter 1 PathBuilder S24x, 26x and 27x switch hardware and
software features, and FCC and Telephone Company
procedures and requirements.
Chapter 2 Setting up a PathBuilder S24x, 26x and 27x switch,
including site preparation, how to unpack the unit, and
installation procedures.
Chapter 3 Installing the hardware on the PathBuilder S24x, 26x
and 27x switch, powerup and verification, and installation of software options.
Chapter 4 Maintaining the PathBuilder S24x, 26x and 27x switch
including replacement of cards and motherboa rd.
Chapter 5 Channelized Data option for the PathBuilder S24x, 26x
and 27x switch.
Appendix A Cable pinouts for Ethernet.
Appendix B Product specifications.
Appendix C Error Codes
Appendix D Technical Support
Special Notices The following notices emphasize certain information in the manual. Each serves a
special purpose and is displayed in the format shown:
Caution
Caution provides you with information that, if not followed, can result in damage to
software, hardware, or data.
Mise en Garde
Une mise en garde vous fournit des informations qui, si elles ne sont pas observées,
peuvent se traduire par des dommages pour le logiciel, le matériel ou les données.
vii
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.
Trademarks PathBuilder is a trademark of 3Com Corporation.
viii
Overview
Chapter 1
About the PathBuilder S24x, 26x, and 27x switch
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). Designed to address the
needs of large branch offices with higher throughput needs and regional
concentration sites, the PathBuilder S24x, 26x, and 27x switch is available in rackmount configurations.
The PathBuilder S24x, 26x, and 27x switch’s high performance capabilities are
uniquely matched to branch applications with high traffic requirements.
As a regional concentr ator , the PathBuild er S24x, 26x, a nd 27x switch accepts t raffi c
from many branch loc ation s into a single site and tran sfers t he traf fic to ot her devi ces
at the regional or central site.
The PathBuilder S24x, 26x, and 27x switch supports both Frame Relay and X.25.
About the PathBuilder S24x, 26x, and 27x switch 1-1
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 featu res of th e PathBuild er S24x, 26x, a nd 27x swi tch f uncti on
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. PathBuilder S24x, 26x, and 27x Switch
1-2 About the PathBuilder S24x, 26x, and 27x switch
Applications
Applications
Introduction This section br iefly describe s severa l appl icatio n examples for th e PathBuil der 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. Because of its high
throughput, the PathBuilder S24x, 26x, and 27x switch can be used in situations
where large file transfers, fast response time, and high numbers of users are the
norm. Figure 1-2 is an example of a typical branch node application.
Furthermore, the PathBuilder S24x, 26x, and 27x switch is designed to meet the
needs of an expanding network. With its large RAM capacity and high-speed
processor, the PathBuilder S24x, 26x, and 27x switch can easily adapt to a growing
network with little or no additional hardware.
SNA
PB S200
Public
or Private
Network
Figure 1-2. Performance Branch Node Example
About the PathBuilder S24x, 26x, and 27x switch 1-3
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 regio nal conc ent rator s, rece iving t raf fi c from do zens and even
thousands of remote sites, and concentrating the traffic before forwarding it to the
correct location. In this case, the PathBuilder S24x, 26x, and 27x switch is the
regional site.
In both examples, the PathBuil der S24x, 26x, and 27x swi tch could be eith er a single
node or a group of nodes net worked togethe r as a cluste r . The PathBui lder S24x, 26x,
and 27x switch’s cluster feature is described below.
Central Site
Branch 1
PB S200
Frame Relay
or X.25
Branch XX
PB S200
PB S200
(Single Node or Cluster)
PBX
Host
Figure 1-3. Regional Concentrator With Public Network Example
1-4 About the PathBuilder S24x, 26x, and 27x switch
High-Speed Link
Applications
Central Site
Branch 1
PB S200
Branch XX
PB S200
PB S200
(Single Node or Cluster)
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 s ing le unit for the pu rpo ses of c onne ct ivi t y. Though configured and
managed as individu al nodes, when t he Pat hBuilder S24x, 26x, and 27x swi tches are
clustered toget her , devi ces at tached t o access po rts on one n ode can h ave calls routed
out the network port of one of the other nodes.
The three high-speed ports on the PathBuilder S24x, 26x, and 27x switch
motherboard provide networking channels between the nodes to pass traffic from
network ports to access ports. The PathBuilder S24x, 26x, and 27x switch cluster
allows for high port count and throughput primarily in support of the regional
concentrator applications.
The example in Figure 1-5 is a full mesh cluster which means that any access link
can reach any host connection. If a PathBuilder S24x, 26x, and 27x switch node
within the cluster fails, only those links and host connections directly connected to
that node go down. Placement of host equipment, and use of redundant host
equipment can minimize the impact of any individual node failure. Furthermore,
Link Back Up features in the remotes can limit the degree of remote isolation if part
of the PathBuilder S24x, 26x, and 27x switch cluster fails.
About the PathBuilder S24x, 26x, and 27x switch 1-5
Applications
16 Access Ports
PB S200
16 Access Ports 16 Access Ports 16 Access Ports
PB S200
High-Speed Network Links to other Sites
or Backbone LAN Connectors
PB S200
PB S200
Figure 1-5. PathBuilder S24x, 26x, and 27x Switch Cluster Example
1-6 About the PathBuilder S24x, 26x, and 27x switch
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.
About the PathBuilder S24x, 26x, and 27x switch 1-7
Hardware Components
Hardware Components
PathBuilder S24x,
26x, and 27x
Switch Hardware
Configuration
SSN
Label
Front View
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-powere d conf iguration backup. It is eas ily expanded by adding
option cards to the industry standard ISA bus.
Figure 1-6 shows a rack-mountable PathBuilder S24x, 26x, and 27x switch.
Status
LEDs
POWER
STATUS
SERVICE
RESET
Reset
Button
Numeric
LED
PathBuilder
S200 Series
®
Rear View
Expansion
Card Ports
Slots 1 through 8
Figure 1-6. PathBuilder S24x, 26x, and 27x Switch
Product ID
Label
AUI Port 4
(Ethernet Routing)
Serial/Network
I/O Ports 1, 2, 3, 6
Power
Supply
Product
ID Label
115/230 VAC
Voltage
Select
Switch
Optional -48V
Power Supply
1-8 About the PathBuilder S24x, 26x, and 27x switch
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.
Motherboard Contains five data ports:
• Ports 1 and 2 are DIM ports
• Port 3 is a high-speed/V.36 DTE port
• Port 4 is the Ethernet AUI port
(see below for limitations)
• Port 6 is reserved for the control terminal port
Contains eight full-size expansion slots.
Integral DSU DIM
(Optional)
An option used in installations requiring connection to a
DDS interface conforming to AT&T 62310 or
ANSI T1E1.4/91-006, and running at 56 kbps.
10Base2
Transceiver for AUI
ports (optional)
Lets you accommodate different network configurations
through th e user-selectable Signal Quality Error (SQE)
function.
T1 Dual Port
Digital PBX
Interface Card
PathBuilder S24x,
The T1 dual port digital PBX interface card supports digital
voice communication s, pro viding integrated net w or k a cce ss.
The T1 digital interfaces are used for both voice and data
traffic.
26x, and 27x
E1 Dual Port
Digital PBX
Interface Card
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 used to support both voice and data
traffic.
DSPM/SM The DSPM/SM card, used at nodes with digital PBX
interfaces, compresses four digital voice channels. It has no
external I/O capabilities.
DSPM with FXS
Analog Inte rface
The analog DSPM/FXS card allows the PathBuilder S24x
switch to support up to t wo voice/fax c hannels per c ard. Each
DSPM/FXS card occupies one ISA slot in the PathBuilder
S24x switch.
DSPM with FXO
Analog Inte rface
The analog FXO daughtercard (when mounted on the
DSPM/HC) allows the PathBuilder S244 and S254 swi tch to
support one voice/fax channel per card. Each DSPM/HX
with FXO daughtercard combination occupies one ISA slot
in the PathBuilder S244 and S254 switch.
About the PathBuilder S24x, 26x, and 27x switch 1-9
Hardware Components
Component Description (continued)
Ethernet Port 4
Limitations
DSPM with E&M
Interface
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 Path Builder
S26x switch E&M card supports both two- and four-wire
interfaces.
Consider these limitations when using the Ethernet Port 4:
• The port does not support Bridging (refer to the Bridging Option,
Part No. T0008-16). When configuring this port, you are not prompted
for the bridge link number.
• The port does not support SLAC.
• When configuring the Ethe rnet Port 4, you are not prompted for the connector
type. Ethernet Port 4 only supports AUI.
1-10 About the PathBuilder S24x, 26x, and 27x switch
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, indi cates that p ower is on an d all DC vol tages ar e
within specifications.
• Status (green) — When on, indicates that t he Pat hBui lde r S24x, 26x, and 27x
switch node is executin g either a p ower-up d iagnostic o r a software downl oad.
This LED is normally off.
• Service (yellow) — When on, indicates a hardware failure. This LED is
normally off.
Numeric LED
Display
Reset Switch The RESET switch resets the node. Pre ssing the RESET swit ch is the equi valent of a
Power Supply The power supply is mounte d at the top rear of the chassis. The AC switchable powe r
The 2-character numeric LED display provides system diagnostic codes. When the
Service LED is on, a 2-digit code on the numeric LED display corresponds to a
certain event.
power-up operation which clears all existing calls and brings down all links.
supply can operate at a nominal 110 or a nominal 230 Volts. For information about
maintaining and replacing the power supply, refer to Chapter 4, Maintenance.
Note
For this unit, the -48VDC Power Option is also available.
About the PathBuilder S24x, 26x, and 27x switch 1-11
Hardware Components
Motherboard
Parts of the
Motherboard
Etherspan
Port 1
Port 2
Port 3
AUI
Port 4
Port 6
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.
Power Supply
Ringer Status
DRAM SIMM
Slots 1 and 2
1
2
3
4
5
6
7
8
Flash SIMM Slot
Optional Flash
SIMM Slot
CMEM SIMM Slot
Data Compression
SIMM Slot
Global DRAM
SIMM Slot
LED Connector
Port 1
DIMs
Port 2
Switch 2
Switch 1
Figure 1-7. Motherboard
RAM The PathBuilder S24x, 26x, and 27x swit ch comes standard with 16 Mbytes of loc al
DRAM for image execution and 8 Mbytes of global memory for buffer storage.
Ports There are four serial data port DB-25 connectors for network or access functions
(2.048 Mbps):
• Ports 1 and 2 (DB 25) are Data Interface Module (DIM) ports
• Port 3 (DB 25) is a V.36 DTE port
• Port 4 (DB 15) is an Ethernet AUI port
• Port 6 (DB25 ) is the Control Terminal Port (EIA232)
1-12 About the PathBuilder S24x, 26x, and 27x switch
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 i ns tal l ed f or bac kup. T hese modules are instal le d
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.
CMEM SIMM The Configuration Memory Module ( CMEM) SIMM has 512 Kbytes o f memory and
provides the real time clock function. The CMEM is backed up by a lithium battery
in case of a power disruption.
Each PathBuilder S24x, 26x, and 27x switch has a Software Serial Number (SSN)
burned into a PROM located on the CMEM card. This SSN is used to verify the
software options that are enabled for that node. It is on the CMEM SIMM card for
easy removal and replacement in case of a motherboard failure.
The CMEM is installed in the SIMM slo t (see Figure 1-7 for slot lo cation).
Figure 1-9 shows the CMEM.
Warning
Only qualified service personnel should perform the procedure described in this
section. If the battery is installed incorrectly, it could explode after the PathBuilder
S200 series switch product is powered up, damaging the unit.
Avertissement
Seules des personnes qualifiées peuvent mettre en pratique les procédures décrites
dans cette section. Si la batterie n’est pas correctement installée, elle risque
d’exploser après la mise en marche du produit PathBuilder S200 series switch et
d’endommager l’unité.
Warnung
Die in diesem Abschnitt aufgeführten Vorgänge sollten ausschließlich von
qualifiziertem Servicepersonal durchgeführt werden. Wenn die Batterie
unsachgemäß installiert wird, kann sie nach dem Einschalten des PathBuilder S200
series switch-Produkts explodieren
About the PathBuilder S24x, 26x, and 27x switch 1-13
Hardware Components
Lithium Battery
Figure 1-9. CMEM SIMM
Expansion Port
I/O Slots
Slot Number and
Port Numbers
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 o n the I/O cards h ave a fixed relationship to th e chassis
expansion slot number. Six port numbers are reserved for each slot. If a slot contains
an I/O card that does not support the full port count reserved for that slot, or the slot
is empty, the extra port numbers remain unused.
This table shows the port numbers associated with each card type.
Slot Number Port Number Associated Card
Motherboard I/O 1-6 Motherboard
1 7-12 Voice cards (E & M, FXS,
2 13-18
3 19-24
Server Module, T1, E1).
The T1/E1 is restricted to
Slot 8.
4 25-30
5 31-36
6 37-42
7 43-48
8 49-54
Description of
Serial/Network
Ports
Ports 1 through 3 are con nect ed to t he mothe rboard with ri bbon cab les. Por ts 1 an d 2
are DIM ports and are functional only if a DIM is present. Port 3 is a dedicated V.36
DTE port.
Ports 1, 2, 3, and 6 on the r ear panel of the chassis are DB-25 femal e connect ors. Port
4, (the Ethernet AUI port) uses a DB-15 connector. Ports 1 and 2 may require
adapters, depending on the DIM used. An adapter cable is available for Port 3.
1-14 About the PathBuilder S24x, 26x, and 27x switch
Hardware Components
How Ports Are
Used
DIMs without a
Cable Adapter
DIMs with a Cable
Adapter
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. Default CTP configuration parameters are 9600 baud,
8-bit characters, 1 stop bit, no parity. This is an EIA 232-D
DCE port using a DB-25 connector.
Ports 1 and 2 support a DSU DIM without the use of cable adapters.
If cable adapters are used, Ports 1 and 2 can support the following DIMs:
• High Speed (V.36)
• V.35
• V.11/ISO-4903
Each DIM port can be configured independently of the other port. For example, you
can install: two V.35 DIMs; one V.35 DIM and one V.11 DIM; or two V.11 DIMs.
The cable adapter pinouts are described in Appendix A, Cables.
About the PathBuilder S24x, 26x, and 27x switch 1-15
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 connector s (one i s fo r connec tion to an AC sour ce and the othe r
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. The uni t can be shi ppe d with the -4 8VDC Power Opti on.
The terminal block of the -48VDC has 5 screws. The two outermost screws
are for attachment. The negative wire terminal is second from the left; the
positive wire terminal is in the middle; the ground is second from the right.
• Expansion Card Ports. The expansion card ports differ depending on what
card is installed in that slot.
Figure 1-10 shows the PathBuilder S24x, 26x, and 27x switch back panel.
Optional -48V
Power Supply
Power
Supply
115/230 VAC
Voltage Select
AUI Port 4
(Ethernet Routing)
Product
ID Label
Switch
Serial/Network
I/O Ports 1,2, 3, 6
Expansion
Card Ports
Slots 1 through 8
Figure 1-10. PathBuilder S24x, 26x, and 27x Switch Back Panel
1-16 About the PathBuilder S24x, 26x, and 27x switch
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.
SW1 DIP Switch Bank
MVIP Bus Interface Conn ector
ISA Bus Interface
87654321109
N
O
Port 49 LED
Run LED
Port 49 Interface
Port 50 Interface
Serial Diagnostic Port (Not Supporte d)
Pin 8
Port 50 LED
SysFail LED
Pin 1
Figure 1-11. T1 Dual Port Digital PBX Interface Card
Description Each T1 dual port digit al PBX i nt erf ace card uses an Indust ry Standard Architec ture
(ISA) bus interface and a Multi-Vendor Integration Protocol (MVIP) bus interface.
The MVIP bus interface provides multiplexed digital access within the PathBuilder
S24x, 26x, and 27x switch chassis.
Function T1 dual port digital PBX interface ca r ds provide the digital interfaces for
connections to a PBX. The T1 dual port di gital PBX interfac e cards bring PCM voice
and channel signaling into the node. The PCM voice data and voice signaling is
routed to a DSPM/SM card over the MVIP bus for compression and transmission to
the remote end.
About the PathBuilder S24x, 26x, and 27x switch 1-17
Hardware Components
Slot Restriction The T1 dual port digital PBX interface card occ upie s s lot 8 i n the Pat hBui lde r S2 4x,
26x, and 27x switch chassis.
DIP Switch
Location
DIP Switch
Settings
T1/CSU Daughter
Card
The T1 dual port digital PBX in terface card contains a single DIP switch bank (SW1)
used to assign the card’s I/O base address.
Set the DIP switches on the T1 dual port digital PBX interface card as shown in
Figure 1-11.
The T1/CSU Daughtercard provides a 1.544 MHz point-to-point interface for North
American service that conforms to AT&T 62411/62421 standard. The card is FCC
Part 68 Registered and uses eternal clocking derived from the telephone network.
One or two T1/CSU Daughter Car ds can be ins talled onto t he T1 Dual Por t card. T he
top card supports port 49 and the bottom supports port 50.
For instructions for installing the T1/CSU card, refer to “Installing th e T1/CSU
Daughter Card” section in Chapter 3.
Required Cables These cables ship with the T1 dual port digital PBX inter face card and ar e required to
cable the T1 dual port digital PBX interface card to the DSPM/SM cards in the node.
Cable Description Function
One 4-position 40-pin
MVIP ribbon cable
Connects up to 3 DSPM/SM cards to interconnect
digital voice traffic between individual cards in the
same PathBuilder S24x, 26x, and 27x switch node.
One 8-position 40-pin
MVIP ribbon cable
Connects 4 or more DSPM/SM car ds to in terconnec t
digital voice traffic between individual cards in the
same PathBuilder S24x, 26x, and 27x switch node.
Two 8-pin modular to
DB15 cables
3-ft adapter converter cables used to convert the
8-pin modular connector on the front of the T1/E1
card to a DB15 connector (Product Code 17269).
1-18 About the PathBuilder S24x, 26x, and 27x switch
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 LED is... ...Indicating
Port 49
Yellow
Port 50
Yellow
RUN
Green
SYSFAIL
Yellow
OFF
ON
OFF
ON
OFF
ON
OFF
ON
Normal operation
Carrier failure on Port 49span
Normal operation
Carrier failure on Port 50 span
Card failure
Card Active
Normal operation
Card failure
About the PathBuilder S24x, 26x, and 27x switch 1-19
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 traf f ic and voice tra ffic.
Description Each E1 dual port digit al PBX i nt erf ace card uses an Indust ry Standard Architec ture
(ISA) bus interface and a Multi-Vendor Integration Protocol (MVIP) bus interface.
The MVIP bus inter face pro vides a multipl exed digit al acce ss within the Pa thBuilder
S24x, 26x, and 27x switch chassis.
The E1 dual port digital PBX interface card has two E1 ports (CAS signaling only),
handles E1 lines with or without CRC4, and supports 120Ω and 75Ω (with the
addition of an optional cable). The interface type is 8-pin modular.
Function E1 dual port digital PBX interface ca r ds provide the digital interfaces for
connections to a PBX. The dual port digital PBX interface cards bring PCM voice
and channel signaling into the node. The PCM voice data and voice signaling is
routed to a DSPM/SM card over the MVIP bus for compression and transmission to
the motherboard.
Slot Restriction The E1 dual port digital PBX interface card can only occ upy slot 8 in the PathBui lder
S24x, 26x, and 27x switch chassis.
1-20 About the PathBuilder S24x, 26x, and 27x switch
Hardware Components
E1 Dual Port Digital
PBX Interface Card
Illustration
Figure 1-12 shows an example of the E1 dual port digital PBX interface card.
87654321109
SW1 DIP Switch Bank
MVIP Bus Interface Conn ector
N
O
Port 49
Alarm LED
Run LED
Port 49 Interface
Port 50 Interface
Port 50
Alarm LED
SysFail LED
DIP Switch
Location
DIP Switch
Settings
ISA Bus Interface
Serial Diagnostic Port
Pin 6
Pin 1
Figure 1-12. E1 Digital PBX Interface Card
The E1 dual port digital PBX in terface card contains a single DIP switch bank (SW1)
used to assign the card’s I/O base address.
Set the switches as shown in Figure 1-12.
About the PathBuilder S24x, 26x, and 27x switch 1-21
Hardware Components
Required cables The following cables, includi ng two pi gt ai l cables, ship with the E1 dual port digi t al
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.
LED Status
Indicators
One 8-position, 40-pin
MVIP ribbon cable
Connects four or more DSPM/SM cards to
interconnect digital voice traffic between individual
cards in the same PathBuilder S24x, 26x, and 27x
switch node.
T wo 8-pin modular to DB15
For 120Ω connection.
cables
T w o 8-p in modul ar to BNC
For 75Ω connection.
cables
The E1 dual port digital PBX interface card contains four LEDs that can be viewed
through the rear bracket:
LED Color LED is... ...Indicating
Port 49 Ye llow OFF
ON
Port 50 Ye llow OFF
ON
RUN Green OFF
ON
SYSFAIL Yellow OFF
ON
Normal operation
Carrier failure on Port 49 span
Normal operation
Carrier failure on Port 50 span
Card failure
Microprocessor Activity
Normal operation
Card failure
1-22 About the PathBuilder S24x, 26x, and 27x switch
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