• Ensuring the Foundation: This section explores the configuration foundation that must be in place to allow for a working IP telephony environment.
• Ephone and Ephone-DN—The Keys to Ringing Phones: Configuring Cisco IP Phones and directory numbers from the CLI is the most flexible method you can use to manage your end devices. This section walks through the ephone (IP phone) and ephone-dn (directory number) setup.
• Adding Directory Numbers, Phones, and Users with CCP: For the not-so-command-line-at-heart, Cisco enables you to configure the same telephony components using a point-and-click GUI. This section walks through the configuration of the core telephony components using CCP.
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