Cisco Systems OL-11953-01 Manual De Usuario

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Chapter 2      Preparing to Install the Cisco Unified IP Phone on Your Network
    Understanding Interactions with Other Cisco Unified IP Telephony Products
2-2
Cisco Unified IP Phone 7961G/7961G-GE and 7941G/7941G-GE for Cisco Unified Communications Manager 6.0
OL-11953-01
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: 
Understanding How the Cisco Unified IP Phone Interacts with 
Cisco Unified Communications Manager
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 traditional PBX functionality with 
the corporate IP network. Cisco Unified Communications Manager manages the 
components of the IP telephony system—the phones, the access gateways, and the 
resources necessary for such features as call conferencing and route planning. 
Cisco Unified Communications Manager also provides:
Firmware for phones
Authentication and encryption (if configured for the telephony system)
Configuration file and CTL file, via TFTP service
Phone registration
Call preservation, so that a media session continues if signaling is lost 
between the primary Communications Manager and a phone)