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Cisco Unified IP Phone 7970G/7971G-GE Administration Guide for Cisco Unified Communications Manager 7.0
OL-15299-01
Chapter 4 Configuring Settings on the Cisco Unified IP Phone
Device Configuration Menu
Peer Firmware Sharing The Peer Firmware Sharing feature provides these advantages
in high speed campus LAN settings:
• Limits congestion on TFTP transfers to centralized TFTP
servers
• Eliminates the need to manually control firmware
upgrades
• Reduces phone downtime during upgrades when large
numbers of devices are reset simultaneously
Peer Firmware Sharing may also aid in firmware upgrades in
branch/remote office deployment scenarios over
bandwidth-limited WAN links.
When enabled, it allows the phone to discover like phones on
the subnet that are requesting the files that make up the
firmware image, and to automatically assemble transfer
hierarchies on a per-file basis. The individual files making up
the firmware image are retrieved from the TFTP server by
only the root phone in the hierarchy, and are then rapidly
transferred down the transfer hierarchy to the other phones on
the subnet using TCP connections
This menu option indicates whether the phone supports peer
to peer image distribution. Settings include:
• Enabled
• Disabled—default
From Cisco Unified
Communications Manager
Administration, choose
Device > Phone > Phone
Configuration.
Log Server Indicates the IP address and port of the remote logging
machine to which the phone sends log messages. These log
messages help in debugging the peer to peer image
distribution feature.
Note The remote logging setting does not affect the sharing
log messages sent to the phone log.
From Cisco Unified
Communications Manager
Administration, choose
Device > Phone > Phone
Configuration.
CDP: PC Port Indicates whether CDP is enabled on the PC port (default is
enabled).
Enable CDP on the PC port when Cisco VT
Advantage/Unified Video Advantage (CVTA) is connected to
the PC port. CVTA does not work without CDP interaction
with the phone.
Note When CDP is disabled in Cisco Unified
Communications Manager, a warning is displayed,
indicating that disabling CDP on the PC port prevents
CVTA from working.
The current PC and switch port CDP values are shown on the
Settings menu.
From Cisco Unified
Communications Manager
Administration, choose Device >
Phone.
Table 4-18 Network Configuration Menu Options (continued)
Option Description To Change