Cisco Systems 1751 User Manual 2

Cisco 1751 Voice-over-IP Quick Start Guide

The Cisco 1751 Voice over IP Quick Start Guide explains how to install WAN Interface Cards and Voice Interface Cards, how to run configuration tools, and how to perform essential Voice-over-IP (VoIP) configuration tasks.

This document contains the following sections:

• Audience, page 1

• Conventions, page 2

• Installing WAN and Voice Interface Cards, page 2

• Cisco Router and Security Device Manager, page 9

Audience

• Configuring Voice-over-IP, page 10

• List of Terms, page 30

• Obtaining Documentation, page 31

• Documentation Feedback, page 32

• Obtaining Technical Assistance, page 32

• Obtaining Additional Publications and Information, page 33

This guide is intended primarily for users who configure and maintain routers, but are not necessarily familiar with tasks, the relationship between tasks, or the commands necessary to perform particular tasks to configure VoIP. We assume that you are familiar with Cisco IOS software, IP and telephony networks, and PBX operation for E&M installations.

List of Terms provides definitions for many of the technical terms used in this document.

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Conventions

This document uses the following conventions:

• Commands and keywords are in boldface.

• Optional keywords or arguments are in square brackets.

• Variables for which you supply values are in italic.

• Titles of publications and new words or concepts are in italic.

• Information the router displays on the console screen is in screen font.

• Information that you enter at the CLI is in boldface screen font.

Installing WAN and Voice Interface Cards

The Cisco 1751 router supports two slots that can be used to install either WAN Interface Cards (WICS) or Voice Interface Cards (VICS), and one slot that can be used to install only a VIC.

If You Are Installing Voice Interface Cards

The router supports one to three Cisco voice interface cards (VICs). Each VIC provides two ports. You need one VIC port for each voice connection.

Note To transmit voice calls over an IP WAN, you need (in addition to the VICs) at least one WAN interface

card (WIC) in the router to provide the connection to the WAN.

There are four types of VIC interfaces, as shown in Figure 3:

• FXS (foreign exchange station) interface connects directly to a standard telephone, fax machine, or

similar device. The FXS VIC interface supplies ringing voltage, dial tone, and similar signals to the station. Ports on this VIC are color-coded gray.

• FXO (foreign exchange office) interface connects local calls to a PSTN central office or to a PBX

that does not support E&M signaling. This is the interface a standard telephone provides. Ports on this VIC are color-coded pink.

• E&M is a signaling technique for two-wire and four-wire telephone and trunk interfaces. The E&M

VIC connects remote calls from an IP network to a PBX for local distribution. Ports on this VIC are color-coded brown.

• The ISDN BRI NT/TE voice interface card provides a client-side (TE) ISDN S/T physical interface

for connection to an NT1 terminating an ISDN telephone network and can also be configured to provide a network termination (NT) interface with phantom power. Each of its two ports can carry two voice calls (one over each ISDN B channel), for a total of four calls per ISDN BRI card. At present, the ISDN BRI VIC does not support ISDN devices such as digital telephone, fax, or modem.

Figure 1 shows a typical VIC.

Cisco 1751 Voice-over-IP Quick Start Guide

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Figure 1 Voice Interface Card

VIC ports

Installing WAN and Voice Interface Cards

VIC

E&M

IN USE

1 0

SEE MANUAL BEFORE INSTALLATION

You should install and cable VICs before performing the software configuration tasks explained later in this guide.

Warning

Caution VICs do not support online insertion and removal (hot swap). To avoid equipment damage, turn off

Be sure to observe all warnings and safety precautions in the installation guide.

electrical power and disconnect network cables before you insert a VIC in the router.

WIC and VIC Installation Procedure

Follow these steps, and refer to Figure 2 to insert a WIC or a VIC in the router:

Step 1 Make sure the router is turned off and is disconnected from the power supply.

Step 2 Loosen the thumbscrews on the WIC or VIC slot cover on the rear panel.

You should be able to loosen the screws using your fingers; however, if the screws are very tight, you might need to use a Phillips screwdriver.

IN USE

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Step 3 Remove the metal plate that covers the card slot.

Step 4 Hold the card by the edges on either side of the card front panel, and line up the card edges with the

guides inside the card slot, as shown in Figure 2.

Step 5 Insert the card in the slot and gently push it into the router until the front panel of the card is flush with

the rear panel of the router.

Step 6 Tighten the screws.

Cisco 1751 Voice-over-IP Quick Start Guide

Installing WAN and Voice Interface Cards

Figure 2 Inserting a WIC or VIC in the Router

Model Cisco 1750

SLOT 1

SLOT 2

IN USE

SEE MANUAL BEFORE INSTALLATION

IN USE

THIS SLOT ACCEPTS ONLY VOICE

INTERFACE CARDS

PVDM OK

MOD OK

SLOT 2 OK

+5, +12, -12 VDC

V 2

IC F

IN USE

SEE MANUAL BEFORE INSTALLATION

SLO

T 1 OK

SLOT 0 OK

IN USE

Guides

SLOT 0

FDX

100

LINK

10/100 ETHERNET

Interface card

If you need more detailed installation instructions, refer to the Cisco WAN Interface Cards Hardware Installation Guide.

Connecting the FXS, FXO, and E&M VICs to the Network

If you installed FXS, FXO, or E&M VICs, use the following cables, and refer to Figure 3 to connect them to the network:

• Standard RJ-11 modular telephone cable to connect FXS VIC ports (color-coded gray) to a

telephone or fax machine.

• Standard RJ-11 modular telephone cable to connect FXO VIC ports (color-coded pink) to the PSTN,

or to a PBX that does not support E&M signaling, through a telephone wall outlet.

• Standard RJ-48S connector and cable to connect E&M VIC ports (color-coded brown) to a PBX line.

The cable wiring depends on the type of connection. For details, refer to the Cisco WAN Interface Cards Hardware Installation Guide.

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Figure 3 Connecting VICs to the Network

FXS VIC

VIC

IN USE

FXS

1 0

SEE MANUAL BEFORE INSTALLATION

FXO VIC

VIC

IN USE

FXO

1 0

SEE MANUAL BEFORE INSTALLATION

IN USE

Installing WAN and Voice Interface Cards

E&M VIC

VIC

IN USE

E&M

1 0

SEE MANUAL BEFORE INSTALLATION

IN USE

PBX

10691

When you are finished, reinstall any network interface cables you removed and turn on power to the router.

Connector Pinouts for FXS, FXO, and E&M VICs

Figure 4 shows the wiring patterns for FXS and FXO VIC connectors, and Table 1 lists the FXS and FXO

pinouts.

Note Pins that are not used should not be connected.

Figure 4 RJ-11 Wiring for FXS and FXO Connectors

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H11420

Table 1 FXS and FXO Pinouts

Pin Signal

1–

2–

3Ring

4Tip

5–

6–

Cisco 1751 Voice-over-IP Quick Start Guide

Installing WAN and Voice Interface Cards

Figure 5 shows the wiring pattern for an E&M connector, and Ta b l e 2 lists the E&M pinouts.

Note The E&M VIC pinout depends on the PBX type and connection. Pins that are not used should not be

connected.

Figure 5 RJ-48S Wiring for E&M Connectors

Table 2 E&M Pinouts

H11421

Pin Signal Description

1 SB –48V signaling battery

2 M-lead Signaling input

3 R Ring, audio input

4 R or R1 Ring, audio input/output, or

output

5 T or T1 Tip, audio input/output, or

output

6 T Tip, audio input

7 E-lead Signaling output

8 SG Signaling ground return

Checking FXS VIC Installation

If you installed an FXS VIC, connect a handset to the VIC port. When router power is on, you should be able to hear the dial tone when you lift the handset. The dial tone should stop after you dial a digit. If you have trouble, use the show voice port command to make sure that the VIC is installed correctly, or try connecting a different handset to the VIC.

2-Port ISDN BRI Card

The ISDN BRI NT/TE voice interface card provides a client-side (TE) ISDN S/T physical interface for connection to an NT1 terminating an ISDN telephone network. It can also be configured to provide a network termination (NT) interface with phantom power. Each of its two ports can carry two voice calls (one over each ISDN B channel), for a total of four calls per ISDN BRI card.

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The card is illustrated in Figure 6.

Figure 6 2-Port ISDN BRI Card Front Panel

RJ-45 ports

Installing WAN and Voice Interface Cards

VIC 2B-NT/TE

ISDN BRI S/T 1

Connecting the 2-Port ISDN BRI Card

Use the straight-through RJ-45 cable to connect the 2-port ISDN BRI card to the ISDN network through a telephone wall outlet.

Caution To prevent damage to the router, be sure to connect the BRI cable to the BRI connector only and not to

any other RJ-45 connector.

Step 1 Confirm that the router is still turned off.

Step 2 Connect one end of a straight-through RJ-45-to-RJ-45 cable to the card’s RJ-45 port. (See Figure 7.)

Figure 7 Connecting the 2-Port ISDN BRI Card

RJ-45 ports

B1 B2 OK

ISDN BRI S/T 0

SEE MANUAL BEFORE INSTALLATION

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VIC 2B-S/T TE

ISDN BRI S/T 1

Straight-through

RJ-45-to-RJ-45 cable

B1 B2

ISDN BRI S/T 0

SEE MANUAL BEFORE INTALLATION

51076

NT1 device

S/T port

Cisco 1751 Voice-over-IP Quick Start Guide

Installing WAN and Voice Interface Cards

Note When the interface is configured as NT and is connecting to a TE device, the cable must have the transmit

and receive pins swapped (crossover cable). (See Tabl e 3.)

Table 3 Interface Pin Numbers and Functions

ISDN BRI NT/TE

Pin 3/T+ Pin 3/R+ Pin 3/T+

Pin 4/R+ Pin 4/R+ Pin 4/R+

Pin 5/R- Pin 5/T- Pin 5/R-

Pin 6/T- Pin 6/R- Pin 6/T-

Step 3 Connect the other end to the RJ-45 wall outlet.

ISDN BRI Card LEDs

ISDN BRI voice interface cards have three LEDs, as listed in Table 4.

Table 4 ISDN BRI Voice Interface Card LEDs

LED Meaning

B1 Call active on B1 channel

B2 Call active on B2 channel

OK Interface is connected to an

NT Interface (use straight-through cable)

ISDN network

TE Interface (use crossover cable)

If you have additional cards to install, proceed to the appropriate sections in this manual. When you have finished all installations, see the Cisco 1751 Router Software Configuration Guide available on the Documentation CD-ROM.

Determining Voice Port Numbering

Enter the show voice port command to identify the port numbers of voice interfaces installed in your router:

Router# show voice port slot-number/port

Figure 8 on page 9 shows Cisco 1751 router slot numbering.

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Figure 8 Cisco 1751 Router Slot Numbering

Cisco Router and Security Device Manager

Kensington-compatible

locking socket

WIC/VIC

slot 1

Console port

Model Cisco 1751

IN USE

10/100-Mbps Ethernet port

SLOT 1

SLOT 0

10/100 ETHERNET

Slot 1

OK LED

VIC 2FXS

Slot 0

OK LED

IN USE

SEE MANUAL BEFORE INSTALLATION

WIC/VIC

slot 0

FDX/100/LINK LEDs

Figure 9 shows the VIC port numbering.

Figure 9 VIC Port Numbering

VIC port 1 VIC port 0

SLOT 2

CONSOLE

AUX

Auxiliary port

VIC 2FXO

Ground

wire

VIC

slot 2

IN USE

SEE MANUAL BEFORE INSTALLATION

PVDM OK MOD OK

PVDM

OK LED

MOD

Power switch

IN USE

SLOT 2 OKFDXSLOT 0 OKSLOT 1 OK 100 LINK

Slot 2

OK LED

THIS SLOT ACCEPTS ONLY VOICE INTERFACE CARDS

+5, +12, -12 VDC

Powe r socket

46560

VIC

E&M

IN USE

1 0

SEE MANUAL BEFORE INSTALLATION

IN USE

10694

Example

If you install a VIC in both SLOT 0 and SLOT 1 of the router, the ports in each of these slots would be numbered as follows:

SLOT 0—0/0 and 0/1

SLOT 1—1/0 and 1/1

Cisco Router and Security Device Manager

Cisco Router and Security Device Manager (SDM) is a web-based configuration tool that allows you to configure LAN and WAN interfaces, routing, Network Address Translation (NAT), firewalls, VPNs, and other features on your router. If SDM is installed on your router, configure the router by following the instructions in the Cisco Router and Security Device Manager (SDM) Quick Start Guide. If this document was not shipped with your router, you can obtain SDM and instructions for installing it on your router from the following

http://www.cisco.com/pcgi-bin/tablebuild.pl/sdm

location:

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Cisco 1751 Voice-over-IP Quick Start Guide

Configuring Voice-over-IP

To obtain the SDM release notes, and other SDM documentation, go to http://www.cisco.com/go/sdm and click the Technical Documentation link.

Note If you need to configure Voice-over-IP, use the Configuring Voice-over-IP section of this Quick Start

Guide.

Configuring Voice-over-IP

Voice-over-IP (VoIP) enables a Cisco 1751 router to carry voice traffic (for example, telephone calls and faxes) over an IP network, simultaneously with data traffic. (See Figure 10.) This guide describes the configuration tools and the major configuration tasks to configure the router.

Figure 10 Voice and Data Traffic on an IP Network

Configuration Tools

You can configure VoIP by using one of the following tools:

• Cisco ConfigMaker application

• Cisco IOS command-line interface (CLI)

Cisco ConfigMaker Application

Use the Cisco ConfigMaker application to address and configure one or more devices or to create an entire network. A series of wizards and dialog boxes can make your voice-configuration task simple and fast.

Follow these steps to install the Cisco ConfigMaker application on your PC:

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10690

Step 1 Disable any virus-scanning software you have running.

Step 2 Close all programs active on your PC.

Step 3 Insert the CD into your CD-ROM drive.

Step 4 The Cisco ConfigMaker installer starts automatically.

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If the installer does not start after a few seconds, select Start>Run, and enter d:\setup where d is your CD-ROM drive.

Step 5 Follow the instructions on the screen to install the Cisco ConfigMaker application.

To learn about the Cisco ConfigMaker application, view the online movie, or use Cisco ConfigMaker Help Topics from the help menu.

You need administrative privileges to install the Cisco ConfigMaker application on Windows NT.

Cisco IOS Command-Line Interface

To configure your router from the command-line interface (CLI), refer to this guide, the Cisco 1700 Series Software Configuration Guide, or the Cisco 1751 Router Software Configuration Guide available

on the Documentation CD-ROM.

Major Voice over IP Configuration Tasks

Follow these major steps to configure Voice over IP (VoIP) on your router:

Configuring Voice-over-IP

Step 1 Configure your IP network to support real-time voice traffic. Before you move to the next step, ping the

remote router to make sure you have an IP connection.

Step 2 Configure your router to support voice ports. Follow these steps for your specific requirements:

• Foreign exchange station (FXS) and foreign exchange office (FXO) voice ports

The default voice-port values are usually adequate for both FXS and FXO voice ports. However, if you need to change the default values, refer to the Cisco 1751 Router Software Configuration Guide.

• E&M voice port

The default values for an E&M voice port are not sufficient to enable voice and data transmission over the IP network. E&M values must match those of the connected PBX device. Refer to the

“Connecting the FXS, FXO, and E&M VICs to the Network” section on page 4.

• ISDN BRI port

The default values for a basic rate interface (BRI) port are not sufficient to enable voice and data transmission over the IP network. BRI values must match those of the connected PBX device. Refer to the “Connecting the FXS, FXO, and E&M VICs to the Network” section on page 4.

Step 3 Enter configuration mode to configure your router for VoIP traffic. Refer to the “Configuring

Voice-over-IP” section on page 10.

Step 4 Save the configuration. Refer to the “Saving the Configuration” section on page 13.

Step 5 Establish a dial plan to determine how the call can be routed. Use the dial-peer voice command to define

dial peers and to implement the dial plan. Refer to the “Dial Plan” section on page 14.

Step 6 Fine-tune your network to adequately support VoIP by configuring a series of protocols and features for

quality of service (QoS). Refer to the “Tuning Parameters for Real-Time Voice Traffic” section on

page 25.

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Cisco 1751 Voice-over-IP Quick Start Guide

+ 23 hidden pages

Cisco Systems 1751 User Manual 2

Specifications and Main Features

Frequently Asked Questions

User Manual

Audience

Conventions

Installing WAN and Voice Interface Cards

If You Are Installing Voice Interface Cards

WIC and VIC Installation Procedure

Connecting the FXS, FXO, and E&M VICs to the Network

Connector Pinouts for FXS, FXO, and E&M VICs

Checking FXS VIC Installation

2-Port ISDN BRI Card

Connecting the 2-Port ISDN BRI Card

ISDN BRI Card LEDs

Determining Voice Port Numbering

Cisco Router and Security Device Manager

Example

Configuring Voice-over-IP

Configuration Tools

Cisco ConfigMaker Application

Cisco IOS Command-Line Interface

Major Voice over IP Configuration Tasks