Cisco VG310, VG320 Hardware Installation Manual

Cisco VG310 and Cisco VG320 Voice Gateways Hardware Installation Guide

First Published: July 25, 2014

Americas Headquarters

Cisco Systems, Inc. 170 West Tasman Drive San Jose, CA 95134-1706 USA http://www.cisco.com Tel: 408 526-4000 800 553-NETS (6387) Fax: 408 527-0883

Text Part Number: OL-31292-01

CONTENTS

Preface

CHAPTER 1

Preface ix

Related Documentation

The Cisco IOS software running your Cisco Voice Gateway includes extensive features and functionality. For information that is beyond the scope of this document, or for additional information, use the resources listed here:

Cisco VG310 and Cisco VG320 Voice Gateways Regulatory Compliance and Safety

•

Information—Provides essential safety information applicable to your Cisco VG310 or Cisco VG320

and contains multiple-language translations of the safety warnings applicable to the device.

• Cisco VG310 and Cisco VG320 Voice Gateways Software Configuration Guide—Provides detailed

configuration information about the Cisco VG310 and Cisco VG320 voice gateways.

• Release Notes—Provides up-to-date information about Cisco IOS software releases used in Cisco VG310

and Cisco VG320 voice gateways.

Installing and Replacing Field Replaceable Units in Cisco VG310 and Cisco VG320 Voice

•

Gateways—This document is intended for trained and qualified service personnel. This document describes how to install field-replaceable units (FRUs) in the Cisco VG310 and Cisco VG320 voice gateways.

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Cisco VG310 and Cisco VG320 Voice Gateways Hardware Installation Guide

Obtaining Documentation

Cisco documentation is available on Cisco.com. Cisco also provides several ways to obtain technical assistance and other technical resources. These sections explain how to obtain technical information from Cisco Systems.

Cisco.com

You can access the most current Cisco documentation at:

http://www.cisco.com/cisco/web/psa/default.html?mode=prod

You can access the Cisco website at:

http://www.cisco.com/

You can access international Cisco websites at:

http://www.cisco.com/web/siteassets/locator/index.html

Ordering Documentation

Registered Cisco.com users (Cisco direct customers) can order Cisco product documentation from the Ordering tool:

Preface

http://www.cisco.com/web/ordering/root/index.html

Non-registered Cisco.com users can order documentation through a local account representative by calling Cisco Systems Corporate Headquarters (California, USA) at 408 526-7208 or, elsewhere in North America, by calling 800 553-NETS (6387).

Conventions

This document use the following conventions: Cisco

Note

Caution

Means reader take note. Notes contain helpful suggestions or references to materials that may not be contained in this manual.

Means reader be careful. In this situation, you might do something that could result in equipment damage or loss of data.

Safety Warnings

Safety warnings appear throughout this publication in procedures that, if performed incorrectly, might harm you. A warning symbol precedes each warning statement. The safety warnings provide safety guidelines that you should follow when working with any equipment that connects to electrical power or telephone wiring. Warnings are translated into several languages. For information about compliance guidelines and translated safety warnings, refer to the Regulatory Compliance and Safety Information document for the Cisco VG310 and Cisco VG320 Voice Gateways.

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Preface

Obtaining Technical Assistance

Warning

IMPORTANT SAFETY INSTRUCTIONS

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. Use the statement number provided at the end of each warning to locate its translation in the translated safety warnings that accompanied this device. Statement 1071

SAVE THESE INSTRUCTIONS

Obtaining Technical Assistance

For all customers, partners, resellers, and distributors who hold valid Cisco service contracts, Cisco Technical Support provides 24-hour-a-day, award-winning technical assistance. The Cisco Technical Support Website on Cisco.com features extensive online support resources. In addition, Cisco Technical Assistance Center (TAC) engineers provide telephone support. If you do not hold a valid Cisco service contract, contact your reseller.

Cisco Technical Support Website

The Cisco Technical Support Website provides online documents and tools for troubleshooting and resolving technical issues with Cisco products and technologies. The website is available 24 hours a day, 365 days a year at this URL:

http://www.cisco.com/cisco/web/support/index.html

Access to all tools on the Cisco Technical Support Website requires a Cisco.com user ID and password. If you have a valid service contract but do not have a user ID or password, you can register at:

https://tools.cisco.com/RPF/register/register.do

Submitting a Service Request

Using the online TAC Service Request Tool is the fastest way to open S3 and S4 service requests. (S3 and S4 service requests are those in which your network is minimally impaired or for which you require product information.) After you describe your situation, the TAC Service Request Tool automatically provides recommended solutions. If your issue is not resolved using the recommended resources, your service request will be assigned to a Cisco TAC engineer. The TAC Service Request Tool is located at:

https://tools.cisco.com/ServiceRequestTool/scm/mgmt/case

For S1 or S2 service requests or if you do not have Internet access, contact the Cisco TAC by telephone. (S1 or S2 service requests are those in which your production network is down or severely degraded.) Cisco TAC engineers are assigned immediately to S1 and S2 service requests to help keep your business operations running smoothly.

To open a service request by telephone, use one of the following numbers:

Asia-Pacific: +61 2 8446 7411 (Australia: 1 800 805 227)

EMEA: +32 2 704 55 55

USA: 1 800 553 2447

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Cisco VG310 and Cisco VG320 Voice Gateways Hardware Installation Guide

Definitions of Service Request Severity

For a complete list of Cisco TAC contacts, go to:

http://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html.

Definitions of Service Request Severity

To ensure that all service requests are reported in a standard format, Cisco has established severity definitions.

• Severity 1 (S1)—Your network is “down,” or there is a critical impact to your business operations. You

and Cisco will commit all necessary resources around the clock to resolve the situation.

• Severity 2 (S2)—Operation of an existing network is severely degraded, or significant aspects of your

business operation are negatively affected by inadequate performance of Cisco products. You and Cisco will commit full-time resources during normal business hours to resolve the situation.

• Severity 3 (S3)—Operational performance of your network is impaired, but most business operations

remain functional. You and Cisco will commit resources during normal business hours to restore service to satisfactory levels.

• Severity 4 (S4)—You require information or assistance with Cisco product capabilities, installation, or

configuration. There is little or no effect on your business operations.

Preface

Obtaining Additional Publications and Information

Information about Cisco products, technologies, and network solutions is available from various online and printed sources.

Cisco Marketplace provides a variety of Cisco books, reference guides, and logo merchandise. Visit

•

Cisco Marketplace, the company store, at: http://www.cisco.com/go/marketplace.

Cisco Press publishes a wide range of general networking, training and certification titles. Both new and

•

experienced users will benefit from these publications. For current Cisco Press titles and other information, go to Cisco Press at: http://www.ciscopress.com/.

Packet magazine is the Cisco Systems technical user magazine for maximizing Internet and networking

•

investments. Each quarter, Packet delivers coverage of the latest industry trends, technology breakthroughs, and Cisco products and solutions, as well as network deployment and troubleshooting tips, configuration examples, customer case studies, certification and training information, and links to scores of in-depth online resources. You can access Packet magazine at: http://www.cisco.com/packet.

Internet Protocol Journal is a quarterly journal published by Cisco Systems for engineering professionals

•

involved in designing, developing, and operating public and private internets and intranets. You can access the Internet Protocol Journal at: http://www.cisco.com/ipj.

• World-class networking training is available from Cisco. You can view current offerings at: http://

www.cisco.com/web/learning/index.html.

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CHAPTER 1

Overview of the Cisco VG310 and Cisco VG320 Voice Gateways

This chapter provides a brief description of the Cisco VG310 and Cisco VG320 voice gateways and contains the following sections:

Introduction to Cisco VG310 and Cisco VG320 Analog Voice Gateways, page 1

•

Locating the Product Serial Number, page 3

•

Interfaces and Service Capabilities of Cisco VG310 and Cisco VG320 , page 3

•

Physical Description and LEDs, page 4

•

Gigabit Ethernet Ports and LED Indicators, page 7

•

Port Numbering Conventions, page 8

•

Hardware Features, page 8

•

Periodic Inspection and Cleaning, page 10

•

Software Elements, page 10

•

Introduction to Cisco VG310 and Cisco VG320 Analog Voice Gateways

The Cisco VG310 and Cisco VG320 Analog Voice Gateways provide an intermediate path to enable the Time Division Multiplex (TDM) to IP transition.

Cisco VG310 and Cisco VG320 support the following interfaces:

Gigabit Ethernet

•

USB

•

Enhanced High-Speed WAN Interface Card (EHWIC), Voice Interface Card (VIC), and Voice WAN

•

Interface Card (VWIC)

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Cisco VG310 and Cisco VG320 Voice Gateways Hardware Installation Guide

Front Panel View

This unit is intended for installation in restricted access areas. A restricted access area can be accessed only through the use of a special tool, lock and key, or other means by security. Statement 1017

The Cisco VG310 and Cisco VG320 chassis support the following:

•

• (For Cisco VG310 only)—24-analog Foreign Exchange Station (FXS) voice ports using one RJ-21

• (For Cisco VG320 only)—48-analog FXS voice ports using two RJ-21 analog voice interface connectors

Front Panel View

The following figure shows the front panel of the Cisco VG310 and Cisco VG320 chassis.

Overview of the Cisco VG310 and Cisco VG320 Voice Gateways

Two 10/100/1000BASE-T Gigabit Ethernet ports

External compact flash memory

AC and DC power inputs

analog voice interface connector

Figure 1: Front Panel of the Cisco VG310 and Cisco VG320 Chassis

Back Panel View

The following figures show the back panel views of the Cisco VG310 and Cisco VG320 chassis respectively.

Figure 2: Back Panel of the Cisco VG310 Chassis

Figure 3: Back Panel of the Cisco VG320 Chassis

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Overview of the Cisco VG310 and Cisco VG320 Voice Gateways

Locating the Product Serial Number

The serial number label for the Cisco VG310 and Cisco VG320 Analog Voice Gateways is located on the back panel of the chassis, as shown in the following figure.

Figure 4: Locating the Product Serial Number

Locating the Product Serial Number

The serial number for Cisco VG310 and Cisco VG320 is 11 characters long.Note

Interfaces and Service Capabilities of Cisco VG310 and Cisco VG320

The following table describes the physical ports and the services supported by each port type:

• Two administrative ports—One console and one auxiliary

Two 10/100BASE-T Gigabit Ethernet LAN ports

•

Cisco VG310 is equipped with an RJ-21 port for connection to a distribution panel

•

Cisco VG320 has two RJ-21 ports for connection to a distribution panel

•

WAN Interface is not supported on Cisco VG310 and Cisco VG320.Note

Table 1: Cisco VG310 and Cisco VG320 Analog Voice Gateway Interfaces and Service Capabilities

Port

Configuration

DetailsServices SupportedInterface ToInterface

Console

Port 0/0

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EIA/TIA-232 asynchronous serial (data communications equipment)

Cisco VG310 and Cisco VG320 Voice Gateways Hardware Installation Guide

ASCII terminal

Personal computer

Local administrative access

RJ-45 physical interface

Physical Description and LEDs

Overview of the Cisco VG310 and Cisco VG320 Voice Gateways

Port

Auxiliary

Port 0/1

Gigabit Ethernet

Port 0/0, 0/1

(For Cisco VG310 only)

RJ-21

24 analog FXS voice ports

Port 0/0/0 to 0/0/23

(For Cisco VG320 only)

RJ-21

48 analog FXS voice ports

Port 0/0/0 to 0/0/23 and port 0/1/0 to 0/1/23

Configuration

asynchronous serial (data terminal equipment)

(802.3)

FXS (loop start or ground-start)

ModemEIA/TIA-232

Analog phone, fax, or modem

Network side of key system

Network side of analog PBX

Analog phone, fax, or modem

Network side of key system

Network side of analog PBX

Remote administrative access

Data backup

DataLAN1000BASE-T

Analog voice/fax or modem

DetailsServices SupportedInterface ToInterface

RJ-45 physical interface

RJ-21 physical interface

Compact slot memory slot 0

Physical Description and LEDs

All interface ports, connectors, and LEDs are on the back panel of the chassis.

——

Flash card

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Overview of the Cisco VG310 and Cisco VG320 Voice Gateways

The following figure describes the back panel features of Cisco VG310.

Figure 5: Back Panel Features of Cisco VG310

Physical Description and LEDs

Status LEDs for DC input power10Chassis ground connection1

On/off switch11FXS RJ-21 connector2

AC power input12Status LED for FXS RJ-21 connector3

DC power input13Status LED for CompactFlash card4

USB connector14CompactFlash card slot5

RJ-45 serial AUX port15Status LED for mini USB6

Mini USB connector16Status LED for console7

EHWIC slot17RJ-45 serial console port8

Gigabit Ethernet ports (2)9

The following figure describes the back panel features of Cisco VG320.

Figure 6: Back Panel Features of Cisco VG320

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On/off switch11Chassis ground connection1

AC power input12FXS RJ-21 connector 12

Cisco VG310 and Cisco VG320 Voice Gateways Hardware Installation Guide

Physical Description and LEDs

Status LEDs for DC input power10

LED Indicators

The following table summarizes the LED indicators that are located on the chassis of both VG310 and VG320, but not on the removable modules or interface cards.

For descriptions of LEDs in removable modules and interface cards, see the applicable documentation for those products.

Overview of the Cisco VG310 and Cisco VG320 Voice Gateways

DC power input13Status LED for FXS RJ-21 connector 13

USB connector14Status LED for CompactFlash card4

RJ-45 serial AUX port15CompactFlash card slot5

Mini USB connector16Status LED for mini USB6

EHWIC slot17Status LED for console7

FXS RJ-21 connector 218RJ-45 serial console port8

Status LED for FXS RJ-21 connector 219Gigabit Ethernet ports (2)9

Table 2: Cisco VG310 and Cisco VG320 LED Indicators

Amber

GreenACT

DescriptionColorLED

Normal operation. System is receiving power.GreenSYS

Operating system boot up in progress.Blinking green

Power supply is available, but the unit has an error condition.

System is not receiving power.Off

Indicates packet activity between the forwarding and routing engine and an I/O port.

No packet transfers are occurring.Off

PVDM3 is detected and enabled.GreenPVDM

PVDM3 is detected, but has an error condition.Amber

PVDM3 is not installedOff

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Overview of the Cisco VG310 and Cisco VG320 Voice Gateways

Gigabit Ethernet Ports and LED Indicators

DescriptionColorLED

GreenCF

Off

Green, blinkingSPD

GreenSER CON

GreenUSB CON

Flash memory is being accessed. Do not remove the CompactFlash memory card.

CompactFlash error.Amber

Flash memory is not being accessed. Safe to remove the CompactFlash memory card, if required.

System is running.GreenPWR

System is off.Off

Indicates that the Ethernet port has a link partner.GreenLNK

No link available.Off

Frequency of blinking indicates speed of the port.

For information about the LED blinking pattern, see

Gigabit Ethernet Ports and LED Indicators, on page 7.

No link available.Off

Indicates that the RJ-45 port is the active console port.

Note

When SER CON LED is On, the USB CON LED will be Off.

Indicates that the USB port is the active console port.

Note

When USB CON LED is On, the SER CON LED will be Off.

Gigabit Ethernet Ports and LED Indicators

There are two RJ-45 Gigabit Ethernet (GE) ports (GE0/0 and GE0/1) on the Cisco VG310 and Cisco VG320 chassis. These ports support 10BASE-T, 100BASE-TX, and 1000BASE-T standards.

The LED indicators for the GE ports display a sequence of blinks followed by a pause to indicate the link speed. The following table describes the link speed indicated by the LED indicators of the GE ports.

Table 3: LED Indicator Pattern for GE Ports

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Link SpeedLED Indicator Pattern

10 MbpsBlinks once followed by a pause

100 MbpsBlinks twice followed by a pause

1000 MbpsBlinks thrice followed by a pause

Cisco VG310 and Cisco VG320 Voice Gateways Hardware Installation Guide

Port Numbering Conventions

The following are the port numbering conventions for the Cisco VG310 chassis and Cisco VG320 chassis:

An external compact flash card is numbered CF 0.

•

10/100/1000BASE-T ports are numbered 10/100/1000BASE-T 0/0 (bottom) and 10/100/1000BASE-T

•

0/1 (top).

• (For Cisco VG310 chassis only)—FXS and E/M voice port numbering begins at 0/0/0 and extends to

0/0/23.

• (For Cisco VG320 chassis only)—FXS and E/M voice port numbering begins at 0/0/0 and extends to

0/0/23 for FXS RJ-21 connector 1. For FXS RJ-21 connector 2, port numbering begins at 0/1/0 and extends to 0/1/23. To locate the FXS voice ports, see Physical Description and LEDs, on page 4.

Overview of the Cisco VG310 and Cisco VG320 Voice Gateways

Hardware Features

This section describes the hardware features of Cisco VG310 and Cisco VG320 and includes the following:

Real-Time Clock, on page 8

•

USB Serial Console Port, on page 9

•

Removable and Interchangeable Modules and Cards, on page 9

•

Real-Time Clock

When the system powers up, the internal real-time clock with battery backup provides the system software with the time of day. This allows the system to verify the validity of the certification authority (CA) certificate. Cisco VG310 and Cisco VG320 have a lithium battery. This battery lasts for the duration of the life time of Cisco VG310 or Cisco VG320 under the operating environmental conditions specified for the chassis, and is not field replaceable.

Note

If the lithium battery unit in Cisco VG310 and Cisco VG320 fails, the unit must be returned to Cisco for repair.

Built-In Interface Ports

The following table summarizes the interface ports built into the chassis.

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Overview of the Cisco VG310 and Cisco VG320 Voice Gateways

Table 4: Summary of Built-In Interfaces on Cisco VG310 and Cisco VG320

Built-In Interface Ports

Management PortsData Ports

USB Type A10/100/1000 GE

RJ-45

Console Serial, RJ-45

USB Serial Console Port

The Mini-USB Type B serial port is enabled to perform management tasks on Cisco VG310 and Cisco VG320. Before establishing physical connectivity between a personal computer and a voice gateway using this port, make sure that a Windows USB device driver is installed.

Removable and Interchangeable Modules and Cards

The following table summarizes the type of removable modules and cards that can be installed in Cisco VG310 and Cisco VG320 to provide specific capabilities.

Table 5: Removable and Interchangeable Modules and Cards

DescriptionInternal or ExternalModules and

Cards

Auxiliary, RJ-45Console Serial, Mini-USB (Type B)

11112

Data Modules (PVDM3)

memory

ExternalEHWIC

The EHWIC slot on the chassis supports one EHWIC card. Legacy interface single-width cards such as WAN interface cards (WICs), voice interface cards (VICs), and high-speed WAN interface cards (HWICs) are supported in the EHWIC slot.

For a list of supported VICs and VWICs, see Supported Voice

Interface Cards and Voice WAN Interface Cards.

InternalPacket Voice

The PVDM slot on the motherboard supports only a PVDM3. Older PVDM cards are not supported.

ExternalFlash memory

A CompactFlash memory card stores the operating system software image. The CompactFlash memory card can have sizes of 512 MB, 1 GB, 2 GB, 4 GB, and 8 GB.

ExternalCisco USB flash

A Cisco USB flash memory (USB 2.0 compliant) supports 1 GB of memory.

Note

We recommend that you do not use third-party USB devices on Cisco VG310 or Cisco VG320. USB 1.x devices are also not supported on Cisco VG310 and Cisco VG320.

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Cisco VG310 and Cisco VG320 Voice Gateways Hardware Installation Guide

Periodic Inspection and Cleaning

Cards

Overview of the Cisco VG310 and Cisco VG320 Voice Gateways

DescriptionInternal or ExternalModules and

ExternalDC power supply

(Optional)

Provides backup power using a 12-volt battery backup system if AC power is not available.

Supported Voice Interface Cards and Voice WAN Interface Cards

The EHWIC slot on the Cisco VG310 and Cisco VG320 chassis supports the following VICs and VWICs:

Cisco VIC3-2FXS/DID

•

Cisco VIC3-2FXS-E/DID

•

Cisco VIC3-4FXS/DID

•

Cisco VIC3-2E/M

•

Cisco VIC2-2FXO

•

Cisco VIC2-4FXO

•

Cisco VWIC3-1MFT-T1/E1

•

Cisco VWIC3-2MFT-T1/E1

•

Cisco VIC2-2BRI-NT/TE

•

Periodic Inspection and Cleaning

Periodic inspection and cleaning of the external surface of the voice gateway is recommended to minimize the negative impact of dust or debris. The frequency of inspection and cleaning is dependent upon the severity of the environmental conditions, but a minimum of every six months is recommended. Cleaning involves vacuuming the unit's air intake and exhaust vents.

Software Elements

The operating system for Cisco VG310 and Cisco VG320 is Cisco IOS software, which resides in the flash memory.

Configuration Connections, on page 10

•

Configuration Methods, on page 11

•

Configuration Connections

You can use an ASCII terminal or a PC to configure a Cisco VG310 or Cisco VG320 Analog Voice Gateway. The configuration can be performed in several ways:

Locally, with a direct connection through the console port

•

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Overview of the Cisco VG310 and Cisco VG320 Voice Gateways

Remotely, with a connection through the auxiliary port and a modem

•

Through Telnet and TFTP

•

Configuration Methods

For information on performing the initial configuration on an analogy voice gateway, see Configuring the

Cisco VG310 and Cisco VG320 Voice Gateways, on page 53.

Configuration Methods

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Configuration Methods

Overview of the Cisco VG310 and Cisco VG320 Voice Gateways

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CHAPTER 2

Planning Your Installation

Before you install your Cisco VG310 or Cisco VG320 Analog Voice Gateway, read the information provided in the following sections:

Safety Recommendations, page 13

•

Preventing Electrostatic Discharge Damage, page 14

•

Temperature Control and Ventilation, page 15

•

Access to Chassis, page 16

•

Rack Requirements, page 16

•

Chassis Grounding, page 16

•

Power Source, page 16

•

Cable Types, page 16

•

Distance Limitations for Interface Cables, page 17

•

Console Port and Auxiliary Port Considerations, page 17

•

Interference Considerations, page 19

•

Mounting Tools and Equipment, page 19

•

• Keeping Track–Checklist, page 20

Safety Recommendations

The following information is included to alert you about safety recommendations and best practices to be followed when working with this equipment.

General Safety Practices

Follow these guidelines to ensure personal safety and protect the equipment:

Keep the area around the chassis clear of obstacles and free from dust during and after installation.

•

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Cisco VG310 and Cisco VG320 Voice Gateways Hardware Installation Guide

Safety Tips

Planning Your Installation

If you remove a chassis during installation and maintenance, place the chassis cover in a safe place.

•

Keep tools away from walk areas to prevent hazards such as slips, trips, and falls.

•

Do not wear loose clothing that may get caught in the chassis.

•

Wear safety glasses if you are working under conditions that might be hazardous to the eyes.

•

Warning

Safety Tips

This equipment must be installed and maintained by service personnel as defined by AS/NZS 3260. Incorrectly connecting this equipment to a general-purpose outlet could be hazardous. The telecommunications lines must be disconnected 1) before unplugging the main power connector or 2) while the housing is open, or both. Statement 1043

Use these tips as safety guidelines when installing and working around this equipment:

Locate the emergency power off switch for the room in which you are working in order to be able to

•

quickly turn off power, if an electrical accident occurs.

Disconnect all power before installing or removing a chassis.

•

Do not work alone if potentially hazardous conditions exist.

•

Never assume that power is disconnected from a circuit. Always check.

•

Look carefully for possible hazards in your work area, such as moist floors, ungrounded power extension

•

cables, and missing safety grounds.

If an electrical accident occurs, proceed as follows:

•

Use caution; do not become a victim yourself.

◦

Turn off power to the system.

◦

If possible, send another person to get medical aid. Otherwise, assess the condition of the victim

◦

and then call for help.

Determine if the person needs rescue breathing or external cardiac compressions, and then take

◦

appropriate action.

Preventing Electrostatic Discharge Damage

Always follow ESD-prevention procedures when removing and replacing components. These procedures include:

Ensure that the chassis is electrically connected to earth ground.

•

Wear an ESD-preventive wrist strap, ensuring that it makes good skin contact.

•

Connect a clip to the ESD-strap connection jack (to the left of the power switch on the rear of the chassis)

•

or to an unpainted chassis frame surface.

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Planning Your Installation

Temperature Control and Ventilation

Caution

For safety, periodically check the resistance value of the antistatic strap, which should be between 1 МΩ and 10 МΩ.

Temperature Control and Ventilation

The installation location (room, closet, or cabinet) for Cisco VG310 and Cisco VG320 should always be well ventilated and provide adequate air circulation to ensure proper cooling. The room temperature should be between 32 °F and 104 °F (0 °C to 40 °C).

The Cisco VG310 and Cisco VG320 analog voice gateway chassis is designed for back-to-front airflow.Note

Enclosed Racks

Note

Enclosed racks must have adequate ventilation. An enclosed rack should never be overcrowded and should have louvers and a fan.

If the Cisco VG310 or Cisco VG320 analog voice gateway is installed in an enclosed rack with a ventilation fan at the top, make sure that heated air drawn upward from other equipment does not prevent adequate cooling.

If the chassis is installed using slide rails, check for blocked ventilation ports when it is in position in the rack or cabinet. Make sure that the ventilation ports of the unit are not blocked.

Note

Baffles can help isolate exhaust air from intake air. Baffles also help draw cooling air through the cabinet. The best location for baffles depends on the airflow patterns in the rack. You can test the airflow by experimenting with different equipment arrangements.

Wall-Mounted

If Cisco VG310 or Cisco VG320 is installed on a wall, there should be plenty of space on both sides to ensure that there is adequate airflow through the chassis.

Bench-Mounted

If the unit is placed on a bench top, do not stack other equipment or paper on the chassis. Provide plenty of space for air circulation (front to back). Inadequate ventilation can result in overheating and damage.

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Cisco VG310 and Cisco VG320 Voice Gateways Hardware Installation Guide

Access to Chassis

Allow space at the rear of the chassis for cable connections. Also consider the need to access the chassis for future upgrades, maintenance, and troubleshooting.

Rack Requirements

Use the following information to plan your equipment-rack configuration:

Allow clearance around the rack for maintenance.

•

Enclosed racks must have adequate ventilation. Ensure that the rack is not congested, because each voice

•

gateway generates heat. An enclosed rack should have louvered sides and a fan to provide cooling air. Heat generated by equipment near the bottom of the rack can be drawn upward into the intake ports of the equipment above it.

When mounting a chassis in an open rack, ensure that the rack frame does not block the ports. If the

•

chassis is installed on slides, check the position of the chassis when it is seated in the rack.

Planning Your Installation

Chassis Grounding

Chassis grounding is provided through the power cable, which uses a standard grounding plug. However, the chassis also requires a reliable earth ground using the earth ground lug and hardware provided. For more information, see Installing the Ground Connection, on page 33.

Power Source

You can connect Cisco VG310 or Cisco VG320 to either an AC power source or a +12V DC power supply.

Caution

The chassis provides inputs for both AC and DC power. Design your installation to use only one type of power. Do not use AC and DC power at the same time. If you do, the unit stops operating, and you must reboot it with only a single power source.

For more information, see Connecting Power, on page 36.

Cable Types

The cable types are dependent on the Cisco VG310 or Cisco VG320 analog voice gateway that you are using. For more information, see Interfaces and Service Capabilities of Cisco VG310 and Cisco VG320 , on page

3 and Cable Specifications and Information, on page 69.

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Planning Your Installation

Distance Limitations for Interface Cables

When planning your installation, consider distance limitations and potential electromagnetic interference (EMI) as defined by the Electronic Industries Association (EIA). Distance-limitation information is included for the following Voice Gateway ports:

• Gigabit Ethernet ports—The maximum segment distance for Gigabit Ethernet is 330 feet (100 meters)

(specified in IEEE 802.3).

• FXS analog voice ports—The maximum distance is established by a total allowable loop resistance,

including the phone or terminal equipment, of 600 Ohms.

Console Port and Auxiliary Port Considerations

Cisco VG310 and Cisco VG320 include an asynchronous serial console port and an auxiliary port. The console and auxiliary ports provide access to the unit either locally using a console terminal connected to the console port, or remotely, using a modem connected to the auxiliary port. This section discusses important cabling information to consider before connecting the unit to a console terminal or modem.

The main difference between the console and auxiliary ports is that the auxiliary port supports hardware flow control and the console port does not. Flow control paces the transmission of data between a sending device and a receiving device. Flow control ensures that the receiving device can absorb the data sent to it before the sending device sends more. When the buffers on the receiving device are full, a message is sent to the sending device to suspend transmission until the data in the buffers has been processed. Because the auxiliary port supports flow control, it is ideally suited for use with the high-speed transmissions of a modem. Console terminals send data at speeds slower than modems do; therefore, the console port is ideally suited for use with console terminals.

Console Port Connections

Cisco VG310 and Cisco VG320 have EIA/TIA-232 asynchronous (RJ-45) and USB 5-pin mini Type B,

2.0-compliant serial console ports. The console port do not have any hardware flow control. Shielded USB cables with properly terminated shields are recommended.

EIA/TIA-232

Depending on the cable and the adapter used, this port appears as a Date Terminal Equipment (DTE) or Data Circuit-Terminating Equipment (DCE) device at the end of the cable. Only one port can be used at the same time.

The default parameters for the console port are 9600 baud, 8 data bits, 1 stop bit, and no parity. The console port does not support hardware flow control.

USB Serial Console

Use the USB console port on the chassis to access the Cisco IOS CLI and perform configuration tasks. A terminal emulation program, such as Microsoft HyperTerminal for Windows, is required to establish communication between the voice gateway and a PC. The USB serial console port connects directly to the USB connector of a PC using a 5-pin mini USB Type A or USB Type-B cable. The USB console supports full-speed (12 Mbps) operation.

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Cisco VG310 and Cisco VG320 Voice Gateways Hardware Installation Guide

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Cisco VG310, VG320 Hardware Installation Manual

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