CHAPTER 2
Cisco Unified IP Phone and Your Network
Cisco Unified IP Phones enable you to communicate by using voice over a data network. To provide this
capability, the 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 SIP Phone 3905 and Cisco Unified
Communications Manager, DNS and DHCP servers, TFTP servers, and switches. It also describes options
for powering phones.
For related information about voice and IP communications, refer to this URL:
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 Phone and other key
components of the Voice over IP (VoIP) network. It includes the following topics:
•
Cisco Unified IP Communications Product Interactions, page 21
•
Cisco Unified IP Phone Power, page 23
•
Configuration Files, page 25
•
Phone Startup Process, page 25
•
Cisco Unified Communications Manager Phone Addition Methods, page 26
•
MAC Address for Cisco Unified IP Phone Determination, page 29
Cisco Unified IP Communications Product Interactions
To function in the IP telephony network, the Cisco Unified IP Phone must be connected to a networking
device, such as a Cisco Catalyst switch. You must also register the Cisco Unified IP Phone with a Cisco
Unified Communications Manager system before sending and receiving calls.
Cisco Unified IP Phone and Cisco Unified Communications Manager Interaction
Cisco Unified Communications Manager is an open and industry-standard call processing system.
Cisco Unified Communications Manager software sets up and tears down calls between phones, integrating
Cisco Unified SIP Phone 3905 Administration Guide for Cisco Unified Communications Manager 8.6 (SIP)
21
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