PA-4E1G Serial Port Adapter Installation and Configuration
Preparing to Install a PA-4E1G
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Preparing for Installation

Table Of Contents

Preparing for Installation

Required Tools and Equipment

Minimum Software and Hardware Requirements

Checking Hardware and Software Compatibility

Safety Guidelines

Safety Warnings

Electrical Equipment Guidelines

Telephone Wiring Guidelines

Preventing Electrostatic Discharge Damage

FCC Class A Compliance

Telecommunications Authority of Singapore

BABT Compliance

Other Safety and Compliance Approvals

Preparing for Installation

This chapter describes the general equipment, safety, and site preparation requirements for installing the PA-4E1G. This chapter contains the following sections:

Required Tools and Equipment

Minimum Software and Hardware Requirements

Checking Hardware and Software Compatibility

Safety Guidelines

FCC Class A Compliance

Telecommunications Authority of Singapore

BABT Compliance

Other Safety and Compliance Approvals

Required Tools and Equipment

You need the following parts and tools to install the PA-4E1G. If you need additional equipment, contact a service representative for ordering information.

PA-4E1G-120 (for balanced operation) or PA-4E1G-75 (for unbalanced operation)

VIP2, VIP4, or VIP6-80 (for installation in Cisco 7000 series or Cisco 7500 series chassis only). For information about the specific VIP models that support the PA-4E1G, see the "Minimum Software and Hardware Requirements" section.

Note Cisco 7000 series and Cisco 7500 series routers require the VIP2-15 at minimum.

Cisco 7304 PCI Port Adapter Carrier Card (for installation in a Cisco 7304 router)

75-ohm unbalanced or 120-ohm balanced, 15-pin serial cables with 15-pin, D-shell (DB-15) terminations at the port adapter end

Number 1 Phillips and a 3/16-inch flat-blade screwdriver

Number 2 Phillips screwdriver

Your own electrostatic discharge (ESD)-prevention equipment or the disposable grounding wrist strap included with all upgrade kits, field-replaceable units (FRUs), and spares

Antistatic mat

Antistatic container

Minimum Software and Hardware Requirements

This section indicates the recommended minimum Cisco IOS software release required to use the PA-4E1G in supported platforms.

Table 2-1 lists the minimum Cisco IOS software release required to use the PA-4E1G port adapter in supported router platforms. For the latest releases supporting the port adapter, refer to the "Checking Hardware and Software Compatibility" section.

Table 2-1 PA-4E1G Port Adapter Software Requirements

Router Platform
Recommended Minimum Cisco IOS Release
Cisco 7100 series routers

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 12.0T

Cisco 7200 series and Cisco 7200 VXR routers

Cisco 7204VXR and Cisco 7206VXR

Cisco IOS Release 12.0(3)T or a later release of Cisco IOS Release 12.0T
Cisco IOS Release 12.0(2)XE2 or a later release of Cisco IOS Release 12.0XE
Cisco IOS Release 12.2(4)B or a later release of Cisco IOS Release 12.2B

Cisco 7204 and Cisco 7206

Cisco IOS Release 11.1(11)CA or a later release of Cisco IOS Release 11.1CA
Cisco IOS Release 12.2(4)B or a later release of Cisco IOS Release 12.2B

Cisco 7202

Cisco IOS Release 11.1(19)CC1 or a later release of Cisco IOS Release 11.1CC
Cisco IOS Release 11.3(4)AA or a later release of Cisco IOS Release 11.3AA
Cisco IOS Release 12.2(4)B or a later release of Cisco IOS Release 12.2B

Cisco uBR7200 series routers

Cisco uBR7246, Cisco uBR7223, and uBR7246VXR

Cisco IOS Release 12.1(2)EC or a later release of Cisco IOS Release 12.1EC

Cisco 7201 router

Cisco IOS Release 12.4(4)XD7 or a later release of Cisco IOS Release 12.4XD
Cisco IOS Release 12.2(31)SB5 or a later release of Cisco IOS Release 12.2SB

Cisco 7301 router

Cisco IOS Release 12.2(11)YZ or a later release of Cisco IOS Release 12.2YZ

Cisco 7304 router

With Cisco 7304 PCI Port Adapter Carrier Card

Cisco IOS Release 12.2(14)SZ or a later release of Cisco IOS Release 12.2SZ

Cisco 7401ASR router

Cisco IOS Release 12.2(1)DX or a later release of Cisco IOS Release 12.2DX
Cisco IOS Release 12.2(4)B or a later release of Cisco IOS Release 12.2B

VIP2 in the Cisco 7000 series and Cisco 7500 series routers 1 2

With VIP2-15(=), VIP2-20(=),
or VIP2-40(=)

With VIP2-50(=)

Cisco IOS Release 11.1(11)CA or a later release of Cisco IOS Release 11.1 A

Cisco IOS Release 11.1(14)CA or a later release of Cisco IOS Release 11.1CA

VIP4 in the Cisco 7000 series and Cisco 7500 series 3

With VIP4-50(=) or VIP4-80(=)

Cisco IOS Release 12.0(10)S or a later release of Cisco IOS Release 12.0S

VIP6-80 in the Cisco 7500 series routers

With VIP6-80(=)

Cisco IOS Release 12.0(22)S, 12.1(12)E, 12.2(12)T or a later release of Cisco IOS Release 12.0S, 12.1E, or 12.2T.

1 The minimum recommended VIP2 model for the PA-4E1G in all Cisco 7500 series routers, and in Cisco 7000 series routers using the RSP7000 and RSP7000CI is the VIP2-15, which has 1 MB of SRAM and 8 MB of DRAM.

2 If you plan to use distributed switching or distributed services, you must use the VIP2-40 (with 2 MB of SRAM and 32 MB of DRAM), or VIP2-50 (with 4 to 8 MB of SRAM and 32 to 128 MB of SDRAM) at a minimum. We do not recommend the use of any other VIP2 model with the PA-4E1G.

3 For proper operation of the VIP4 in all Cisco 7500 series routers, and in Cisco 7000 series routers using the RSP7000 and RSP7000CI, we recommend that your RSP or RSP7000 have at least 64 MB of DRAM.

Caution To prevent system problems, do not operate the VIP2 or VIP4 in Cisco 7000 series systems without the RSP7000 and RSP7000CI. The VIP2 or VIP4 will not operate properly with the Route Processor, Switch Processor, or Silicon Switch Processor (SSP) installed in the earlier host Cisco 7000 series routers.

Checking Hardware and Software Compatibility

To check the minimum software requirements of Cisco IOS software with the hardware installed on your router, Cisco maintains the Software Advisor tool on This tool does not verify whether modules within a system are compatible, but it does provide the minimum IOS requirements for individual hardware modules or components.

Note Access to this tool is limited to users with login accounts.

To access Software Advisor, click Log In at and go to Support > Tools and Resources. You can also access the tool by pointing your browser directly to

Choose a product family or enter a specific product number to search for the minimum supported software release needed for your hardware.

Safety Guidelines

This section provides safety guidelines that you should follow when working with any equipment that connects to electrical power or telephone wiring.

Safety Warnings

Safety warnings appear throughout this publication in procedures that, if performed incorrectly, may harm you. A warning symbol precedes each warning statement.



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 translated safety warnings that accompanied this device.


Note:  This documentation is to be used in conjunction with the specific product installation guide that shipped with the product. Please refer to the Installation Guide, Configuration Guide, or other enclosed additional documentation for further details.



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 de standaard praktijken om ongelukken te voorkomen. Voor een vertaling van de waarschuwingen die in deze publicatie verschijnen, dient u de vertaalde veiligheidswaarschuwingen te raadplegen die bij dit apparaat worden geleverd.


Opmerking  Deze documentatie dient gebruikt te worden in combinatie met de installatiehandleiding voor het specifieke product die bij het product wordt geleverd. Raadpleeg de installatiehandleiding, configuratiehandleiding of andere verdere ingesloten documentatie voor meer informatie.



Tämä varoitusmerkki merkitsee vaaraa. Olet tilanteessa, joka voi johtaa ruumiinvammaan. Ennen kuin työskentelet minkään laitteiston parissa, ota selvää sähkökytkentöihin liittyvistä vaaroista ja tavanomaisista onnettomuuksien ehkäisykeinoista. Tässä asiakirjassa esitettyjen varoitusten käännökset löydät laitteen mukana toimitetuista ohjeista.


Huomautus  Tämä asiakirja on tarkoitettu käytettäväksi yhdessä tuotteen mukana tulleen asennusoppaan kanssa. Katso lisätietoja asennusoppaasta, kokoonpano-oppaasta ja muista mukana toimitetuista asiakirjoista.



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 les consignes de sécurité traduites qui accompagnent cet appareil.


Remarque  Cette documentation doit être utilisée avec le guide spécifique d'installation du produit qui accompagne ce dernier. Veuillez vous reporter au Guide d'installation, au Guide de configuration, ou à toute autre documentation jointe pour de plus amples renseignements.



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 sind im Lieferumfang des Geräts enthalten.


Hinweis  Dieses Handbuch ist zum Gebrauch in Verbindung mit dem Installationshandbuch für Ihr Gerät bestimmt, das dem Gerät beiliegt. Entnehmen Sie bitte alle weiteren Informationen dem Handbuch (Installations- oder Konfigurationshandbuch o. Ä.) für Ihr spezifisches Gerät.



Ez a figyelmezetõ jel veszélyre utal. Sérülésveszélyt rejtõ helyzetben van. Mielõtt bármely berendezésen munkát végezte, legyen figyelemmel az elektromos áramkörök okozta kockázatokra, és ismerkedjen meg a szokásos balesetvédelmi eljárásokkal. A kiadványban szereplõ figyelmeztetések fordítása a készülékhez mellékelt biztonsági figyelmeztetések között található.


Megjegyzés  Ezt a dokumentációt a készülékhez mellékelt üzembe helyezési útmutatóval együtt kell használni. További tudnivalók a mellékelt Üzembe helyezési útmutatóban (Installation Guide), Konfigurációs útmutatóban (Configuration Guide) vagy más dokumentumban találhatók.



Questo simbolo di avvertenza indica un pericolo. La situazione potrebbe causare infortuni alle persone. Prima di intervenire su qualsiasi apparecchiatura, occorre essere al corrente dei pericoli relativi ai circuiti elettrici e conoscere le procedure standard per la prevenzione di incidenti. Per le traduzioni delle avvertenze riportate in questo documento, vedere le avvertenze di sicurezza che accompagnano questo dispositivo.


Nota  La presente documentazione va usata congiuntamente alla guida di installazione specifica spedita con il prodotto. Per maggiori informazioni, consultare la Guida all'installazione, la Guida alla configurazione o altra documentazione acclusa.



Dette varselssymbolet betyr fare. Du befinner deg i en situasjon som kan forårsake personskade. Før du utfører arbeid med utstyret, bør du være oppmerksom på farene som er forbundet med elektriske kretssystemer, og du bør være kjent med vanlig praksis for å unngå ulykker. For å se oversettelser av advarslene i denne publikasjonen, se de oversatte sikkerhetsvarslene som følger med denne enheten.


Merk  Denne dokumentasjonen skal brukes i forbindelse med den spesifikke installasjonsveiledningen som fulgte med produktet. Vennligst se installasjonsveiledningen, konfigureringsveiledningen eller annen vedlagt tilleggsdokumentasjon for detaljer.



Este símbolo de aviso significa perigo. O utilizador encontra-se numa situação que poderá ser causadora de lesões corporais. Antes de iniciar a utilização de qualquer equipamento, tenha em atenção os perigos envolvidos no manuseamento de circuitos eléctricos e familiarize-se com as práticas habituais de prevenção de acidentes. Para ver traduções dos avisos incluídos nesta publicação, consulte os avisos de segurança traduzidos que acompanham este dispositivo.


Nota  Esta documentação destina-se a ser utilizada em conjunto com o manual de instalação incluído com o produto específico. Consulte o manual de instalação, o manual de configuração ou outra documentação adicional inclusa, para obter mais informações.



Este símbolo de aviso indica peligro. Existe riesgo para su integridad física. Antes de manipular cualquier equipo, considere los riesgos de la corriente eléctrica y familiarícese con los procedimientos estándar de prevención de accidentes. Vea las traducciones de las advertencias que acompañan a este dispositivo.


Nota  Esta documentación está pensada para ser utilizada con la guía de instalación del producto que lo acompaña. Si necesita más detalles, consulte la Guía de instalación, la Guía de configuración o cualquier documentación adicional adjunta.



Denna varningssignal 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 vanliga förfaranden för att förebygga olyckor. Se översättningarna av de varningsmeddelanden som finns i denna publikation, och se de översatta säkerhetsvarningarna som medföljer denna anordning.


OBS!  Denna dokumentation ska användas i samband med den specifika produktinstallationshandbok som medföljde produkten. Se installationshandboken, konfigurationshandboken eller annan bifogad ytterligare dokumentation för närmare detaljer.

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.

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.

Preventing Electrostatic Discharge Damage

Electrostatic discharge (ESD) damage, which can occur when electronic cards or components are improperly handled, results in complete or intermittent failures. Port adapters and processor modules comprise 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 (Mohms).

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.

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-4E1G 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.

Telecommunications Authority of Singapore

A Telecommunications Authority of Singapore (TAS) label is shipped with each PA-4E1G-120(=) or PA-4E1G-75(=) port adapter and signifies that each port adapter meets Singapore's requirements as specified for connecting to the public network.

Attach the TAS label to the rear of the host chassis next to the other agency approvals for the chassis. (See Figure 2-1.)

Figure 2-1 Attaching the TAS Label to the Host Chassis

BABT Compliance

The BABT607116 marking on the PA-4E1G signifies that it meets United Kingdom directive 607116 and has been designed to BABT standards. The BABT label is located on the top of the PA-4E1G. Figure 2-2 shows the BABT label for the PA-4E1G.

Figure 2-2 BABT Label for the PA-4E1G Port Adapter

Other Safety and Compliance Approvals

The PA-4E1G port adapter is designed to comply with the following safety and compliance standards:

Emission requirement: EN55022

Performance approvals: G.703, G.704

Safety approvals: UL 1950, CSA 22.2 No. 950, EN60950, AUSTEL TS001, AS/NZ 3260, IEC 950

The European Union's requirements as specified by approval number CE0168X

The United Kingdom's requirements as specified by approval number 607113