Cisco PA-T3 Operating and maintenance instructions

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PA-T3 Serial Port Adapter Installation
and Configuration
Product Number: PA-T3(=) and PA-2T3(=)
Platforms Supported: Cisco 7500 Series, Cisco 7000 Series,
Cisco 7100 Series, Cisco 7200 Series, Cisco uBR7200
Series, Catalyst 5000 Series Switches
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PA-T3 Serial Port Adapter Installation and Configuration
Copyright © 1996, 1997, 1999, Cisco Systems, Inc.
All rights reserved.
Text Part Number: 78-4721-07

Preface v
Preface
This preface describes how to find additional information on the PA-T3 and PA-2T3 serial port
adapters and other Cisco products, services, and documentation. This preface contains the following
sections:
•Objectives, page v
•Organization, page v
•Related Documentation, page vi
•Cisco Connection Online, page vii
•Cisco Documentation CD-ROM, page viii
Objectives This document describes how to install and configure the PA-T3 serial port adapter (PA-T3[=] and
PA-2T3[=]) in the following platforms:
•Cisco 7200 series routers—which consist of the two-slot Cisco 7202, four-slot Cisco 7204 and
Cisco 7204VXR, and six-slot Cisco 7206 and Cisco 7206VXR
•Cisco uBR7200 series universal broadband routers
•Second-generation Versatile Interface Processor (VIP2) in Cisco 7500 series routers and
Cisco 7000 series routers with the Cisco 7000 Series Route Switch Processor (RSP7000) and
Cisco 7000 Series Chassis Interface (RSP7000CI)
•Cisco 7100 series routers—which consist of the Cisco 7120 and Cisco 7140
•Catalyst Route Switch Module (RSM)/VIP2 in Catalyst 5000 series switches
Organization
This document is organized into the following chapters:
Section Title Description
Chapter 1 Overview Describes the PA-T3 port adapter and
describes its LED displays, cables,
and receptacles.
Chapter 2 Preparing for Installation Describessafetyconsiderations,tools
required, and procedures you should
perform before the actual
installation.

Related Documentation
vi PA-T3 Serial Port Adapter Installation and Configuration
Related Documentation
Your router and the Cisco IOS software running on it contain extensive features and functionality,
which are documented in the following resources:
•For Cisco IOS software configuration information and support, refer to the modular
configuration and modular command reference publications in the Cisco IOS software
configuration documentation set that corresponds to the software release installed on your
Cisco hardware.
Note You can access Cisco IOS software configuration and hardware installation and
maintenance documentation on the World Wide Web at http://www.cisco.com,
http://www-china.cisco.com, or http://www-europe.cisco.com.
•For hardware installation and maintenance information on Cisco 7000 series and Cisco 7500
series routers, and the VIP2, refer to the following publications:
—The installation and configuration guide that shipped with your Cisco 7000 series or
Cisco 7500 series router
—Second-Generation Versatile Interface Processor (VIP2) Installation and Configuration (for
VIP2 users only)
•For hardware installation and maintenance information on the Catalyst 5000 series switches and
the Catalyst RSM/VIP2, refer to the following publications:
—The installation and configuration guide that shipped with your Catalyst 5000 series switches
Chapter 3 VIP2 and the PA-T3 Port Adapter Provides instructions for installing
the PA-T3 port adapter on a VIP2
interface processor installed in
Cisco 7500 or Cisco 7000 series
routers.
Chapter 4 Catalyst RSM/VIP2 and the PA-T3
Port Adapter Provides instructions for installing the PA-T3 port adapter on a
Catalyst RSM/VIP2 installed in
Catalyst 5000 series switches.
Chapter 5 Cisco 7200 Series and the
PA-T3 Port Adapter Provides instructions for installing the PA-T3 port adapter in a Cisco
7200 series router.
Chapter 6 Cisco uBR7200 Series and the
PA-T3 Port Adapter Provides instructions for installing the PA-T3 port adapter in the
Cisco uBR7200 series universal
broadband router.
Chapter 7 Cisco 7100 Series and the PA-T3
Port Adapter Provides information on the PA-T3 and its use in Cisco 7100 series
routers.
Chapter 8 Configuring the PA-T3 Interfaces Provides instructions for configuring
your port adapter on the supported
platforms. The instructions given in
this chapter apply to all supported
platforms described in this document.
Section Title Description

Preface vii
Cisco Connection Online
—Route Switch Module Catalyst VIP2-15 and VIP2-40 Installation and Configuration Note
(Document Number 78-4780-01) which shipped with your Catalyst RSM/VIP2
•For hardware installation and maintenance information on Cisco 7100 series routers, refer to the
Cisco 7100 Series VPN Router Installation and Configuration Guide publication that shipped
with your Cisco 7100 series router.
•For information on setting up a Virtual Private Network, see the Cisco 7100 Series VPN
Configuration Guide.
•For hardware installation and maintenance information on the Cisco 7200 VXR routers, refer to
the Cisco 7200 VXR Installation and Configuration Guide publication that shipped with your
Cisco 7200 VXR router.
•For hardware installation and maintenance information on the Cisco 7200 routers, refer to the
following publications that shipped with your router:
—Cisco 7202 Installation and Configuration Guide
—Cisco 7204 Installation and Configuration Guide
—Cisco 7206 Installation and Configuration Guide
•For hardware installation and maintenance information on the Cisco uBR7200 series routers,
refer to the Cisco uBR72xx Universal Broadband Router Installation and Configuration Guide
that shipped with your Cisco uBR7200 series router.
•For international agency compliance, safety, and statutory information for WAN interfaces for
Cisco 7500 series, Cisco 7000 series, Cisco 7200 series, Cisco 7100 series, and Cisco uBR7200
series routers, refer to the following publications:
—Regulatory Compliance and Safety Information for the Cisco 7500 Series Routers
—Regulatory Compliance and Safety Information for the Cisco 7000 Series Routers
—Regulatory Compliance and Safety Information for the Cisco 7200 Series Routers
—Regulatory Compliance and Safety Information for the Cisco 7100 Series Routers
—Regulatory Compliance and Safety Information for the Cisco ubr72xx Universal Broadband
Router
Note The regulatory compliance and safety information documentation listed above applies to the
Catalyst 5000 series switches and the Catalyst RSM/VIP2.
•For port adapter hardware and memory configuration guidelines for Cisco 7200 series routers,
refer to the document Cisco 7200 Series Port Adapter Hardware Configuration Guidelines.
•To view Cisco documentation or obtain general information about the documentation, refer to the
Documentation CD-ROM, see the “Cisco Connection Online” section, or call customer service
at 800 553-6387 or 408 526-7208. Customer service hours are 5:00 a.m. to 6:00 p.m. Pacific
time, Monday through Friday (excluding Cisco-observed holidays). You can also send e-mail to
[email protected].
Cisco Connection Online
CiscoConnection Online (CCO) isCisco Systems’ primary, real-time supportchannel. Maintenance
customers and partners can self-register on CCO to obtain additional information and services.

Cisco Documentation CD-ROM
viii PA-T3 Serial Port Adapter Installation and Configuration
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CHAPTER
Overview 1-1
1
Overview
This chapter describes the one-port PA-T3 and two-port PA-2T3 serial port adapters. This chapter
contains the following sections:
•Port Adapter Overview, page 1-1
•PA-T3 Serial Port Adapter Features, page 1-2
•Management Information Base, page 1-3
Port Adapter Overview
The PA-T3 serial port adapter is a single-width, one-port or two-port module that integrates data
service unit (DSU) functionality into the Cisco router. It provides one or two high-speed serial
PA-T3 interfaces on Cisco 7100 series routers, Cisco 7200 series routers, Cisco uBR7200 series
routers, on the second-generation Versatile Interface Processor (VIP2) in all Cisco 7000 series and
Cisco 7500 series routers, and on the Catalyst RSM/VIP2 in the Catalyst 5000 series switches. (See
Figure 1-1 and Figure 1-2.)
Note Port adapters have a handle attached, but this handle is occasionally not shown in figures in
this publication to allow a full view of detail on the port adapter’s faceplate.
Figure 1-1 One-Port PA-T3 Serial Port Adapter
H10041
RCLK
XMTR
RCVR
ENABLED
FERF
OOF RL
LL
AIS
DS3 SERIAL

PA-T3 Serial Port Adapter Features
PA-T3 Serial Port Adapter Installation and Configuration
1-2
Figure 1-2 Two-Port PA-2T3 Serial Port Adapter
The PA-T3 serial port adapter can be installed in the following slots on the hardware platforms
described in this document:
•VIP2—Port adapter slot 0 and port adapter slot 1
•Catalyst RSM/VIP2—Port adapter slot 0 and port adapter slot 1
•Cisco 7100 series routers—Port adapter slot 3 in the Cisco 7120 series and port adapter slot 4 in
the Cisco 7140 series
•Cisco 7200 series routers—Port adapter slot 1 and slot 2 of the Cisco 7202; port adapter slot 1
through slot 4 of the Cisco 7204 and Cisco 7204VXR; port adapter slot 1 through slot 6 of the
Cisco 7206 and Cisco 7206VXR
•Cisco uBR7200series routers—Port adapterslot 1 and slot 2of the Cisco uBR7246;port adapter
slot 1 of the Cisco uBR7223
The one-port PA-T3 serial port adapter provides two network interfaces per VIP2 for Cisco 7000
series and Cisco 7500 series routers, two network interfaces per Catalyst RSM/VIP2, and one
high-speed interface on the Cisco 7200 series and Cisco uBR7200 series routers. The two-port
PA-2T3 serial port adapter provides four network interfaces per VIP2 for Cisco 7000 series and
Cisco 7500 series routers, four network interfaces for the Catalyst RSM/VIP2, and two high-speed
interfaces on the Cisco 7200 series and Cisco uBR7200 series routers. Serial network interfaces
reside on modular port adapters, which provide a direct connection between the high-speed bus in
the router and the external networks. The PA-T3 serial port adapter provides a full-duplex
synchronous serial PA-T3 interface for transmitting and receiving data at rates of up to 34 megabits
per second (Mbps).
The port adapter supports both 16- and 32-bit cyclic redundancy checks (CRCs). The default is
16-bitCRCs; to enable32-bit CRCs,you use aconfiguration command.Foradescription ofthe CRC
function, see the “Configuring Cyclic Redundancy Checks” section on page 8-13.
The VIP2 and Catalyst RSM/VIP2 support online insertion and removal (OIR), but individual port
adapters with a VIP2 or Catalyst RSM/VIP2 do not support OIR. To replace port adapters in the
Cisco7000 series andCisco 7500 seriesrouters, and theCatalyst 5000 series switches,you mustfirst
remove the VIP2 or Catalyst RSM/VIP2 from the chassis and then replace port adapters as required.
OIR is supported for port adapters in the Cisco 7200 series and Cisco uBR7200 series routers.
PA-T3 Serial Port Adapter Features
The PA-T3 serial port adapter provides the following features:
•Single-width port adapter for the VIP2 in all Cisco 7000 series, Cisco 7100 series, Cisco 7500
series, and Cisco 7200 series routers
H10062
RCLK
XMTR
RCVR
ENABLED
FERF
OOF RL
LL RCLK
FERF
RL
AIS
OOF LL
AIS
DS3 SERIAL
XMTR
RCVR

Overview 1-3
Management Information Base
•Single-width port adapter for the Catalyst RSM/VIP2 in all Catalyst 5000 series switches
•Single- or double-port T3 rate (45 Mbps) connectivity
•Full-duplex synchronous serial DS3 interface
•High-speed High-Level Data Link Control (HDLC) data
•Integrated data service unit (DSU) functionality
•Support for 16- and 32-bit cyclic redundancy checks (CRCs)
•Support for C-bit, M13, and bypass framing
•Support for ATM-Data Exchange Interface (DXI), Frame Relay, HDLC, Switched Multimegabit
Data Service (SMDS), and Point-to-Point Protocol (PPP) serial encapsulations
•Support for DS3 MIB (RFC 1407)
•Support for remote and local loopback
•B3ZS line coding
•Scrambling and bandwidth reduction
•Online insertion and removal (OIR)
Management Information Base
Management Information Base (MIB) attributes are readable and writable across the Integrated
Local Management Interface (ILMI) through use of the Simple Network Management Protocol
(SNMP).
The one-port PA-T3 serial port adapter supports MIB-II (RFC 1213) and the DS3 interface MIB
(RFC 1407).
The two-port PA-2T3 serial port adapter supports MIB-II (RFC 1213) and the DS3 interface MIB
(RFC 1407).

Management Information Base
PA-T3 Serial Port Adapter Installation and Configuration
1-4

CHAPTER
Preparing for Installation 2-1
2
Preparing for Installation
This chapter describes the general equipment, safety, and site preparation requirements for installing
the PA-T3 port adapters.
•Parts and Tools Required, page 2-1
•Software and Hardware Requirements, page 2-2
•PA-T3 Port Adapter LEDs, page 2-3
•PA-T3 Receptacles and Cables, page 2-5
•Interoperability Guidelines for PA-T3 Serial Port Adapter DSUs, page 2-5
•Safety Guidelines, page 2-6
•FCC Class A Compliance, page 2-8
Parts and Tools Required
You need the following tools and parts to install a port adapter. If you need additional equipment,
contact a service representative for ordering information.
•PA-T3 serial port adapter and one of the following:
—VIP2-15(=), VIP2-20=, VIP2-40(=), or VIP2-50(=) motherboard
—Catalyst RSM/VIP2-15(=) or Catalyst RSM/VIP2-40(=) motherboard
—Cisco 7100 series router with at least one available port adapter slot
—Cisco 7200 series router with at least one available port adapter slot
—Cisco uBR7200 series router with at least one available port adapter slot
•75-ohm coaxial serial interface cables
•Number 1 Phillips screwdriver and a 3/16-inch flat-blade screwdriver
•Your own ESD-prevention equipment or the disposable grounding wrist strap included with all
upgrade kits, field-replaceable units (FRUs), and spares

Software and Hardware Requirements
PA-T3 Serial Port Adapter Installation and Configuration
2-2
Software and Hardware Requirements
Table 2-1 lists the minimum Cisco IOS software release required to use the PA-T3 and the
PA-2T3 serial port adapters in supported router platforms.
Table 2-1 PA-T3 Port Adapter Software Requirements
Caution The VIP2 requires that the host Cisco 7000 series router have the RSP7000 and RSP7000CI
installed. The VIP2 does not operate properly with the Route Processor (RP), Switch Processor (SP), or
Silicon Switch Processor (SSP) installed in the host Cisco series router.
The PA-T3 serial port adapter is considered a high-bandwidth port adapter; therefore, and at a
minimum, Cisco recommends that the PA-T3 serial port adapter be installed on the VIP2-15 or
Catalyst RSM/VIP2 motherboard (with 1 MB of SRAM and 8 MB of DRAM). Installation of the
PA-T3 serial port adapter on the VIP2-10 (with 512 KB of SRAM and 8 MB of DRAM) is not
recommended.
Platforms Recommended Minimum Cisco IOS Release
Cisco 7000 and Cisco 7500 series PA-T3 PA-2T3
• With VIP2-15(=) or VIP2-40(=)
• With VIP2-50(=)
Cisco IOS Release 11.1(13)CA or a later
release of Cisco IOS Release 11.1 CA
Cisco IOS Release 11.1(14)CA or a later
release of Cisco IOS Release 11.1 CA
Cisco IOS Release 11.1(16)CA or a later
release of Cisco IOS Release 11.1 CA
Cisco IOS Release 11.1(16)CA or a later
release of Cisco IOS Release 11.1 CA
Cisco 7200 series
• Cisco 7204VXR and Cisco 7206VXR Cisco IOS Release 12.0(2)XE2 or a later
release of Cisco IOS Release 12.0 XE
Cisco IOS Release 12.0(3)T or a later release
of Cisco IOS Release 12.0 T
Cisco IOS Release 12.0(2)XE2 or a later
release of Cisco IOS Release 12.0 XE
Cisco IOS Release 12.0(3)T or a later release
of Cisco IOS Release 12.0 T
• Cisco 7204 and Cisco 7206 Cisco IOS Release 11.1(16)CA or a later
release of Cisco IOS Release 11.1 CA Cisco IOS Release 11.1(16)CA or a later release of Cisco IOS Release 11.1 CA
• Cisco 7202 Cisco IOS Release 11.1(19)CC1 or a later
release of Cisco IOS Release 11.1 CC
Cisco IOS Release 11.3(4)AA or a later
release of Cisco IOS Release 11.3 AA
Cisco IOS Release 11.1(19)CC1 or a later
release of Cisco IOS Release 11.1 CC
Cisco IOS Release 11.3(4)AA or a later
release of Cisco IOS Release 11.3 AA
Cisco uBR7200 series
• Cisco uBR7246 and Cisco uBR7223 Cisco IOS Release 12.0(2)XA or a later
release of Cisco IOS Release 12.0 XA Cisco IOS Release 12.0(2)XA or a later release of Cisco IOS Release 12.0 XA
Cisco 7100 Series
• Cisco 7120 series and Cisco 7140 series Cisco IOS Release 12.0(4)XE or a later
release of Cisco IOS Release 12.0 XE
Cisco IOS Release 12.0(5)T or a later release
of Cisco IOS Release 12.0 T
Catalyst 5000 series switches
• With Catalyst RSM/VIP2-15(=) or
Catalyst RSM/VIP2-40(=) Cisco IOS Release 12.0(4)T or a later release of Cisco IOS Release 12.0T Cisco IOS Release 12.0(4)T or a later release of Cisco IOS Release 12.0T

Preparing for Installation 2-3
PA-T3 Port Adapter LEDs
Note The VIP2 and Catalyst RSM/VIP2 supports online insertion and removal (OIR), but
individual port adapters do not. To replace port adapters in the Cisco 7000 series and Cisco 7500
series routers, and the Catalyst 5000 series switches, you must first remove the VIP2 or
Catalyst RSM/VIP2 from the chassis and then replace port adapters as required. OIR is supported
for port adapters in the Cisco 7100 series, Cisco 7200 series, and Cisco uBR7200 series routers. Port
adapters have a handle attached, but this handle is occasionally not shown in illustrations in this
publication to allow a full view of detail on the port adapter’s faceplate.
In the Cisco 7000 series, Cisco 7100 series, Cisco 7500 series, and Cisco uBR7200 series routers,
and the Catalyst 5000 series switches, there are no restrictions on slot locations or sequence;
however, in the Cisco 7200 series routers, there are specific configuration guidelines that must be
observed for high-bandwidth port adapters.
For specific Cisco 7200 series routers hardware configuration information and for memory
configuration guidelines, refer to the document Cisco 7200 Series Port Adapter Hardware
Configuration Guidelines, which shipped with your Cisco 7200 series chassis and is also available
on the Cisco Connection Documentation, Enterprise Series CD-ROM.
To determine if your Cisco 7000 series, Cisco 7100 series, Cisco 7500 series, Cisco 7200 series, or
Cisco uBR7200 series router, or Catalyst RSM/VIP2, is compatible with the PA-T3 serial port
adapter, use the show version command to display the current hardware configuration of the router,
including the system software version that is currently loaded and running. You can check the
version of the default ROM image by removing the board and checking the ROM labels, or by
configuring the interface or system software to boot from ROM, restarting the system, and using the
show version command to check the running version.
Use the show version command to display the current system software version. In the following
example, the running system software is Release 11.1(16)CA.
Router> show version
Cisco Internetwork Operating System Software
IOS (tm) GS Software, Version 11.1(16)CA
Synced to mainline version: 11.1(10.5)
Copyright (c) 1986-1997 by cisco Systems, Inc.
Compiled Thu 22-May-97 14:32
If your system lacks the required system software and microcode, contact a customer service
representative for upgrade information.
PA-T3 Port Adapter LEDs
The PA-T3 has one status LED and six uplink port status LEDs (RCLK, FERF, OOF, AIS, RL, and
LL) for the serial T3 port. (See Figure 2-1.)

PA-T3 Port Adapter LEDs
PA-T3 Serial Port Adapter Installation and Configuration
2-4
Figure 2-1 LEDs on the PA-T3 Serial Port Adapter—Partial Front View
The PA-2T3 has one status LED and six uplink port status LEDs (RCLK, FERF, OOF, AIS, RL, and
LL) for each serial PA-T3 port. (See Figure 2-2.)
Figure 2-2 LEDs on the PA-2T3 Serial Port Adapter—Partial Front View
Table 2-2 describes the PA-T3’s LEDs.
After system initialization, the Enabled LED goes on, indicating that the port adapter has been
enabled for operation.
The following conditions must be met before the PA-T3 serial port adapter is enabled:
•The port adapter contains a valid microcode version that has been downloaded successfully.
•The port adapter is correctly connected to the VIP2 or Catalyst RSM/VIP2 (Cisco 7000 series
and Cisco 7500 series,or Catalyst 5000 series switches) and the midplane and is receiving power
in the Cisco router.
•The bus recognizes the port adapter.
If any of these conditions is not met or if the initialization fails for other reasons, the enabled LED
does not go on.
Table 2-2 LEDs for Uplink Port Status
LED Color State Description
ENABLED Green On Indicates that port adapter is ready for operation.
Uplink Port Status
RCLK Green On Indicates that a receive clock has been detected.
FERF Yellow On Indicates that Framer detected Far End Receive
Failure.
OOF Yellow On Indicates that Framer detected Out of Frame.
AIS Yellow On Indicates that Framer detected Alarm Indication
Signal.
RL Yellow On Indicates that port is in remote loopback mode.
ENABLED RCVR
XMTR
RCLK
AIS FERF
RL
OOF
LL
DS3 SERIAL
H10040
LEDs
ENABLED RCVR
XMTR
RCLK
AIS FERF
RL RCLK FERF RL
OOF
LL
AIS
OOF
LL
DS3 SERIAL
H10063
LEDs

Preparing for Installation 2-5
PA-T3 Receptacles and Cables
PA-T3 Receptacles and Cables
The PA-T3 port adapter serial interface cable, which is a 75-ohm coaxial cable, connects your router
to a T3 serial network. Serial cables conform to EIA/TIA-612 and EIA/TIA-613 specifications. The
serial ports on the PA-T3 serial port adapter are considered to be data terminal equipment (DTE)
devices.
On a single PA-T3 serial port adapter, there are one or two T3 serial ports, each with two connectors
(receive and transmit), where you connect the Cisco 75-ohm coaxial cable. The 75-ohm coaxial
cable (Cisco part number CAB-ATM-DS3/E3) for the PA-T3 serial port adapter is available only
from Cisco Systems; it is not available from outside commercial cable vendors.
The Cisco PA-T3 75-ohm coaxial cable (see Figure 2-3) is available only in 10-foot (3.05-meter)
lengths. The typical maximum distance between stations for PA-T3 transmissions is
1300 feet (396 meters).
Figure 2-3 PA-T3 Serial Port Adapter Cable
You can test the data terminal equipment-to-data circuit-terminating equipment (DTE-to-DCE)
cable connection by using the loopback dte command. See the “Using the loopback Command to
Verify the Physical Interface” section on page 8-24 for more information.
Interoperability Guidelines for PA-T3 Serial Port Adapter DSUs
The PA-T3 serial port adapter supports several types of integrated DSUs. Table 2-3 lists the feature
compatibilities of the PA-T3 serial port adapter DSUs.
Table 2-3 Feature Compatibilities of PA-T3 Serial Port Adapter DSUs
LL Yellow On Indicates that port is in local loopback mode.
DSU Full Rate Support Scrambling Support Subrate Support MDL1Support
1 MDL=Maintenance Digital Link.
DL3100 Yes Yes Yes No
Kentrox Yes Yes2
2 PA-T3 serial port adapters support either scrambling or Kentrox subrate, not both at the same time.
Yes2No
Larscom Yes Yes Yes No
LED Color State Description
ENABLED Green On Indicates that port adapter is ready for operation.
Uplink Port Status
75-ohm coaxial cabling
BNC plugBNC plug
H3399

Safety Guidelines
PA-T3 Serial Port Adapter Installation and Configuration
2-6
Safety Guidelines
Following are safety guidelines that you should follow when working with any equipment that
connects to electrical power or telephone wiring.
Warning This warning symbol means danger. You are in a situation that could cause bodily injury. Before
you work on any equipment, be aware of the hazards involved with electrical circuitry and be familiar with
standard practices for preventing accidents. To see translations of the warnings that appear in this publication,
refer to the Regulatory Compliance and Safety Information document that accompanied this device.
Waarschuwing Dit waarschuwingssymbool betekent gevaar. U verkeert in een situatie die
lichamelijk letsel kan veroorzaken. Voordat u aan enige apparatuur gaat werken, dient u zich bewust
te zijn van de bij elektrische schakelingen betrokken risico's en dient u op de hoogte te zijn van
standaard maatregelen om ongelukken te voorkomen. Voor vertalingen van de waarschuwingen die
in deze publicatie verschijnen, kunt u het document Regulatory Compliance and Safety Information
(Informatie over naleving van veiligheids- en andere voorschriften) raadplegen dat bij dit toestel is
ingesloten.
Varoitus Tämävaroitusmerkkimerkitsee vaaraa.Olettilanteessa, jokavoijohtaa ruumiinvammaan.
Ennen kuin työskentelet minkään laitteiston parissa, ota selvää sähkökytkentöihin liittyvistä
vaaroista ja tavanomaisista onnettomuuksien ehkäisykeinoista. Tässä julkaisussa esiintyvien
varoitusten käännökset löydät laitteen mukana olevasta Regulatory Compliance and Safety
Information -kirjasesta (määräysten noudattaminen ja tietoa turvallisuudesta).
Attention Ce symbole d'avertissement indique un danger. Vous vous trouvez dans une situation
pouvant causer des blessures ou des dommages corporels. Avant de travailler sur un équipement,
soyez conscient des dangers posés par les circuits électriques et familiarisez-vous avec les
procédures couramment utilisées pour éviter les accidents. Pour prendre connaissance des
traductions d’avertissements figurant dans cette publication, consultez le document Regulatory
Compliance and Safety Information (Conformité aux règlements et consignes de sécurité) qui
accompagne cet appareil.
Warnung Dieses Warnsymbol bedeutet Gefahr. Sie befinden sich in einer Situation, die zu einer
Körperverletzung führen könnte. Bevor Sie mit der Arbeit an irgendeinem Gerät beginnen, seien Sie
sich der mit elektrischen Stromkreisen verbundenen Gefahren und der Standardpraktiken zur
Vermeidung von Unfällen bewußt. Übersetzungen der in dieser Veröffentlichung enthaltenen
Warnhinweise finden Sie im Dokument Regulatory Compliance and Safety Information
(Informationen zu behördlichen Vorschriften und Sicherheit), das zusammen mit diesem Gerät
geliefert wurde.
Avvertenza Questo simbolo di avvertenza indica un pericolo. La situazione potrebbe causare
infortuni alle persone. Prima di lavorare su qualsiasi apparecchiatura, occorre conoscere i pericoli
relativiaicircuiti elettrici edessere al correntedelle pratiche standardper la prevenzionedi incidenti.
La traduzione delle avvertenze riportate in questa pubblicazione si trova nel documento Regulatory
Compliance and Safety Information (Conformità alle norme e informazioni sulla sicurezza) che
accompagna questo dispositivo.
Advarsel Dette varselsymbolet betyr fare. Du befinner deg i en situasjon som kan føre til
personskade. Før du utfører arbeid på utstyr, må du vare oppmerksom på de faremomentene som
elektriske kretser innebærer, samt gjøre deg kjent med vanlig praksis når det gjelder å unngå ulykker.
Hvis du vil se oversettelser av de advarslene som finnes i denne publikasjonen, kan du se i
dokumentet Regulatory Compliance and Safety Information (Overholdelse av forskrifter og
sikkerhetsinformasjon) som ble levert med denne enheten.

Preparing for Installation 2-7
Electrical Equipment Guidelines
Aviso Este símbolo de aviso indica perigo. Encontra-se numa situação que lhe poderá causar danos
físicos. Antes de começar a trabalhar com qualquer equipamento, familiarize-se com os perigos
relacionados com circuitos eléctricos, e com quaisquer práticas comuns que possam prevenir
possíveis acidentes. Para ver as traduções dos avisos que constam desta publicação, consulte o
documentoRegulatoryCompliance andSafety Information(Informação deSegurançae Disposições
Reguladoras) que acompanha este dispositivo.
¡Advertencia! Este símbolo de aviso significa peligro. Existe riesgo para su integridad física. Antes
de manipular cualquier equipo, considerar los riesgos que entraña la corriente eléctrica y
familiarizarse con los procedimientos estándar de prevención de accidentes. Para ver una traducción
de las advertencias que aparecen en esta publicación, consultar el documento titulado Regulatory
Compliance and Safety Information (Información sobre seguridad y conformidad con las
disposiciones reglamentarias) que se acompaña con este dispositivo.
Varning! Denna varningssymbol signalerar fara. Du befinner dig i en situation som kan leda till
personskada. Innan du utför arbete på någon utrustning måste du vara medveten om farorna med
elkretsar och känna till vanligt förfarande för att förebygga skador. Se förklaringar av de varningar
som förkommer i denna publikation i dokumentet Regulatory Compliance and Safety Information
(Efterrättelse av föreskrifter och säkerhetsinformation), vilket medföljer denna anordning.
Electrical Equipment Guidelines
Follow these basic guidelines when working with any electrical equipment:
•Before beginning any procedures requiring access to the chassis interior, locate the emergency
power-off switch for the room in which you are working.
•Disconnect all power and external cables before moving a chassis.
•Do not work alone when potentially hazardous conditions exist and never assume that power has
been disconnected from a circuit; always check.
•Do not perform any action that creates a potential hazard to people or makes the equipment
unsafe. Carefully examine your work area for possible hazards such as moist floors, ungrounded
power extension cables, and missing safety grounds.
Telephone Wiring Guidelines
Use the following guidelines when working with any equipment that is connected to telephone
wiring or to other network cabling:
•Never install telephone wiring during a lightning storm.
•Never install telephone jacks in wet locations unless the jack is specifically designed for wet
locations.
•Never touch uninsulated telephone wires or terminals unless the telephone line has been
disconnected at the network interface.
•Use caution when installing or modifying telephone lines.

FCC Class A Compliance
PA-T3 Serial Port Adapter Installation and Configuration
2-8
Preventing Electrostatic Discharge Damage
Electrostatic discharge (ESD) damage, which can occur when electronic cards or components are
improperlyhandled, resultsin complete orintermittent failures.Port adaptersand processormodules
consist of printed circuit boards that are fixed in metal carriers. Electromagnetic interference (EMI)
shielding and connectors are integral components of the carrier. Although the metal carrier helps to
protect the board from ESD, use a preventive antistatic strap during handling.
Following are guidelines for preventing ESD damage:
•Always use an ESD wrist or ankle strap and ensure that it makes good skin contact.
•Connect the equipment end of the strap to an unfinished chassis surface.
•When installing a component, use any available ejector levers or captive installation screws to
properly seat the bus connectors in the backplane or midplane. These devices prevent accidental
removal, provide proper grounding for the system, and help to ensure that bus connectors are
properly seated.
•When removing a component, use any available ejector levers or captive installation screws to
release the bus connectors from the backplane or midplane.
•Handle carriers by available handles or edges only; avoid touching the printed circuit boards or
connectors.
•Place a removed board component-side-up on an antistatic surface or in a static shielding
container. If you plan to return the component to the factory, immediately place it in a static
shielding container.
•Avoid contact between the printed circuit boards and clothing. The wrist strap only protects
components from ESD voltages on the body; ESD voltages on clothing can still cause damage.
•Never attempt to remove the printed circuit board from the metal carrier.
Caution For safety, periodically check the resistance value of the antistatic strap. The measurement should
be between 1 and 10 megohms (Mohm).
FCC Class A Compliance
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. These limits are designed to provide reasonable protection
against harmful interference when the equipment is operated in a commercial environment. This
equipment generates, uses, and can radiate radio-frequency energy and, if not installed and used in
accordance with the instruction manual, may cause harmful interference to radio communications.
Operation of this equipment in a residential area is likely to cause harmful interference, in which
case users will be required to correct the interference at their own expense.
You can determine whether your equipment is causing interference by turning it off. If the
interference stops, it was probably caused by the Cisco equipment or one of its peripheral devices.
If the equipment causes interference to radio or television reception, try to correct the interference
by using one or more of the following measures:
•Turn the television or radio antenna until the interference stops.
•Move the equipment to one side or the other of the television or radio.
•Move the equipment farther away from the television or radio.

Preparing for Installation 2-9
FCC Class A Compliance
•Plug the equipment into an outlet that is on a different circuit from the television or radio. (That
is, make certain the equipment and the television or radio are on circuits controlled by different
circuit breakers or fuses.)
Note The PA-T3 serial port adapter has been designed to meet these requirements. Modifications
to this product that are not authorized by Cisco Systems, Inc., could void the various approvals and
negate your authority to operate the product.

FCC Class A Compliance
PA-T3 Serial Port Adapter Installation and Configuration
2-10