Cisco Systems AS5400XM quick start Voice over IP, Prerequisites, Saving Configuration Changes

Source	Slot	Port		DS3-Port		Priority	Status	State
Trunk	2	0		NO		204	Good	Default
Trunk	2	1		NO		205	Good	Default
Trunk	cards	controllers			clock	health information
Slot	Type	7 6	5 4 3 2		1 0

2T1 B B B B G G G G CLOCK CHANGE HISTORY

CLOCK	Event		Time
External Change in		CLI configuration	23:27:25 UTC Tue Nov 30 1999
Gateway#

Tip The most common cause of clock slip problems is an improperly set dial-tdm-clock priority parameter. Change the default setting for dial-tdm-clock priority from free-running clock to a setting that matches your system requirements.

Saving Configuration Changes

To prevent the loss of the gateway configuration, follow these steps to save it to NVRAM:

Step 1 Enter the enable command and password to go to privileged EXEC mode. You are in privileged EXEC mode when the prompt changes to Gateway#.

Gateway> enable

Password: password

Gateway#

Step 2 Save the configuration changes to NVRAM so that they are not lost during resets, power cycles, or power outages:

Gateway# copy running-config startup-config

Step 3 Return to privileged EXEC mode:

Gateway(config-if)# Ctrl-Z

Gateway#

Voice over IP

Follow these guidelines when configuring voice over IP on your universal gateway.

Prerequisites

Before you can configure your universal gateway to use voice over IP, you must first do the following:

•Establish a working IP network. For more information about configuring IP, see the appropriate release of the Cisco IOS IP Routing Protocols Configuration Guide.

You can access this document at Technical Support & Documentation > Product Support > Cisco IOS Software > Cisco IOS Software Release you are using > Command References.

•Complete basic configuration for the universal gateway, which includes, at a minimum, the following tasks:

–Complete your company’s dial plan.

–Establish a working telephony network based on your company’s dial plan.

•Integrate your dial plan and telephony network into your existing IP network topology. Merging your IP and telephony networks depends on your particular IP and telephony network topology. In general, we recommend the following suggestions:

–Use canonical numbers wherever possible. It is important to avoid situations in which numbering systems are significantly different on different routers or universal gateways in your network.

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