Cisco Systems OL-8148-01 manual Power Outage, Obtaining Additional Information about Power

Chapter 2 Preparing to Install the Cisco Unified IP Phone on Your Network

Providing Power to the Phone

Power Outage

Your accessibility to emergency service through the phone is dependent on the phone 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 Cisco Unified IP Phone 7970 Series

•The Cisco IOS releases that support bidirectional power negotiation

•Other requirements and restrictions regarding power

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

Cisco Unified IP Phone Administration Guide for Cisco Unified CallManager 5.0 (SCCP), Cisco Unified IP Phones

OL-8148-01 2-7