Preparing to Install the Cisco Unified IP
Phone on 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 IP Phone 8961, 9951, and 9971 and
Cisco Unified Communications Manager, DNS and DHCP servers, TFTP servers, and switches. It also
describes phone power options.
For related information about voice and IP communications, see this URL:
http://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:
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Understanding Interactions with Other Cisco Unified IP
Telephony Products
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.
This section includes the following topics:
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Cisco Unified IP Phone 8961, 9951, and 9971 Administration Guide for Cisco Unified Communications Manager 8.6 (SIP)
Understanding Interactions with Other Cisco Unified IP Telephony Products, page 2-1
Providing Power to the Cisco Unified IP Phone, page 2-3
Understanding Phone Configuration Files, page 2-7
Understanding the Phone Startup Process, page 2-8
Adding Phones to the Cisco Unified Communications Manager Database, page 2-10
Determining the MAC Address for a Cisco Unified IP Phone, page 2-14
Understanding How the Cisco Unified IP Phone Interacts with Cisco Unified Communications
Manager, page 2-2
Understanding How the Cisco Unified IP Phone Interacts with the VLAN, page 2-2
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