Cisco 7942G - Unified IP Phone VoIP Manuale di amministrazione

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Cisco Unified IP Phones and Your Network

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Cisco Unified IP Phones enable you to communicate by using voice over a data network. To provide this

capability, the Cisco Unified IP Phones depend upon and interact with several other key Cisco Unified IP

Telephony components, including Cisco Unified Communications Manager.

This chapter focuses on the interactions between the Cisco Unified IP Phones and Cisco Unified

Communications Manager, DNS, DHCP, and TFTP servers, and switches. It also describes options for

powering phones.

For related information about voice and IP communications, see:

http://www.cisco.com/en/US/partner/products/sw/voicesw/index.htmlhttp://www.cisco.com/en/US/products/

sw/voicesw/index.html

This chapter provides an overview of the interaction between the Cisco Unified IP Phones and other key

components of the Voice over IP (VoIP) network.

To function in the IP telephony network, the Cisco Unified IP Phone must connect to a networking device,

such as a Cisco Catalyst switch. You must also register the Cisco Unified IP Phones with a Cisco

Unified Communications Manager system before sending and receiving calls.

Cisco Unified IP Phone 7941G, 7941G-GE, 7942G, 7961G, 7961G-GE, and 7962G Administration Guide for Cisco Unified

Communications Manager 9.0 (SCCP and SIP)