Specifications

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Cisco Unified IP Phone 7931G Administration Guide for Cisco Unified Communications Manager 8.0 (SCCP and SIP)
OL-20798-01
Chapter 4 Configuring Settings on the Cisco Unified IP Phone
Device Configuration Menu
CDP: SW Port Indicates whether CDP is supported on the switch xport (default
is enabled).
• Enable CDP on the switch port for VLAN assignment for
the phone, power negotiation, QoS management, and 802.1x
security.
• Enable CDP on the switch port when the phone is connected
to a Cisco switch.
Note When CDP is disabled in Cisco Unified
Communications Manager, a warning is presented,
indicating that CDP should be disabled on the
switch port only if the phone is connected to a
non-Cisco switch.
Note The current PC and switch port CDP values are shown on
the Settings menu.
From Cisco Unified Communications
Manager Administration, choose Device
> Phone > Phone Configuration.
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
Firmware Sharing. 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.
Table 4-20 Network Configuration Menu Options (continued)
Option Description To Change