Cisco 1751 Quick Start Manual - Page 2

Browse online or download pdf Quick Start Manual for Network Router Cisco 1751. Cisco 1751 35 pages. Modular access router
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Conventions

This document uses the following conventions:

•

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 1

Cisco 1751 Voice-over-IP Quick Start Guide

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

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

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.

shows a typical VIC.

screen font

Figure

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