Cisco Systems manual Upgrading to a New Cisco IOS Release, Cisco VG224 Deployment Scenario

Chapter 1 Understanding Interface Numbering and Cisco IOS Software Basics

Upgrading to a New Cisco IOS Release

Saving Configuration Changes

You need to enter the copy running-configstartup-configcommand to save your configuration changes to nonvolatile random-access memory (NVRAM), so the changes are not lost if there is a system reload or power outage. For example:

Router# copy running-config startup-config

Building configuration...

It might take a minute or two to save the configuration to NVRAM. After the configuration has been saved, the following appears:

[OK]

Router#

Upgrading to a New Cisco IOS Release

To install or upgrade to a new Cisco IOS release, see How to Update/Upgrade Cisco IOS Software.

Cisco VG224 Deployment Scenario

Figure 1-3shows a typical deployment scenario for the Cisco VG224 voice gateway.

Figure 1-3 Analog FXS User Interfaces with Metro Ethernet Interface

Ethernet

RJ-21

VG224

Analog telephones

Distribution

panel

103038

Where to Go Next

Now that you have learned some Cisco IOS software basics, you can begin to configure the router using the CLI.

Remember that:

•You can use the question mark (?) and arrow keys to help you enter commands.

•Each command mode restricts you to a set of commands. If you have difficulty entering a command, check the prompt and then enter the question mark (?) for a list of available commands. You might be in the wrong command mode or using the wrong syntax.

Cisco VG224 Voice Gateway Software Configuration Guide

OL-5005-01 1-5