Configuring
For complete information about the global configuration commands and about configuring LAN and WAN interfaces on your router, refer to the Cisco IOS configuration guides and command references.
The rest of this guide explains how to configure your router for VoIP traffic.
Note Voice configuration uses a number of Cisco IOS commands. For complete information about these commands, refer to the Cisco 1751 Router Software Configuration Guide. You can also enter a question mark after a command or partial command at the Router(config)# prompt to get syntax and argument help.
Note At any point, you can see the operating configuration, including changes you just made, by entering the show
Saving the Configuration
You must save the new configuration to nonvolatile RAM (NVRAM) periodically during the configuration process and also when you finish configuring the router.
Cisco IOS software uses two configuration
Follow these steps for each router to write the new configuration to NVRAM:
Step 1 Exit configuration mode, and return to the enable prompt by pressing
Step 2 To see the startup configuration stored in NVRAM, enter the following command at the enable prompt:
Router# show startup-config
Step 3 To see the operating configuration, including any changes you have just made, enter the following command:
Router# show
Step 4 To write your changes to NVRAM and make them permanent, enter the following command:
Router# copy
Building configuration. . .
[OK]
Router#
The router is now configured to boot in the new configuration.
Cisco 1751
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