2-4
Cisco Unified IP Conference Station 7937 Administration Guide for Cisco Unified Communications Manager 6.0
OL-11560-01 Rev. B0
Chapter 2 Preparing to Install the Conference Station on Your Network
Understanding Conference Station Configuration Files
Power Outage
Your accessibility to emergency service through the conference station is dependent on the
conference station being powered. If there is an interruption in the power supply, Service and Emergency
Calling Service dialing will not function until power is restored. In the case of a power failure or
disruption, you may need to reset or reconfigure equipment before using the Service or Emergency
Calling Service dialing.
Obtaining Additional Information about Power
For related information about power, refer to the documents shown in
Table 2-3
. These documents
provide information about these topics:
•
Cisco switches that work with the conference station
•
The Cisco IOS releases that support bidirectional power negotiation
•
Other requirements and restrictions regarding power
Understanding Conference Station Configuration Files
Configuration files for a conference station are stored on the TFTP server and define parameters for
connecting to Cisco Unified Communications Manager. In general, any time you make a change in
Cisco Unified Communications Manager that requires the conference station to be reset, a change is
made to the conference station’s configuration file automatically.
Configuration files also contain information about which image load the conference station should be
running. If this image load differs from the one currently loaded on a conference station, the conference
station contacts the TFTP server to request the required load files.
IEEE 802.3af Class 3 power from a Cisco switch (with or
without bidirectional power negotiation enabled) or from a
third-party switch
15.4 W
Near full
External power
—
Full
1.
Starts at approximately 1/2 brightness, changes to full brightness when the conference station negotiates additional power.
Table 2-2
Power Consumption and Display Brightness for Power Configurations (continued)
Power Configuration
Max. Power Consumed
from a Switch
Conference Station Screen
Brightness
Table 2-3
Related Documentation for Power
Document Topics
URL
PoE Solutions
http://www.cisco.com/en/US/netsol/ns340/ns394/ns147/ns412/
networking_solutions_package.html
Cisco Catalyst Switches
http://www.cisco.com/univercd/cc/td/doc/product/lan/index.htm
Integrated Service Routers
http://www.cisco.com/en/US/products/hw/routers/index.html
Cisco IOS Software
http://www.cisco.com/en/US/products/sw/iosswrel/
products_ios_cisco_ios_software_category_home.html