Cisco Unified IP Phone 6901 and 6911 User Guide for Cisco Unified Communications Manager 9.0 (SCCP and SIP)
Product Safety, Security, Accessibility, and Additional Information
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Product Safety, Security, Accessibility, and Additional Information

Product Safety, Security, Accessibility, and Additional Information

Safety and Performance Information

Power outages and other devices can affect your Cisco Unified IP Phone.

Power Outage

Your access to emergency service through the phone depends on the phone being powered. If there is a power interruption, Service and Emergency Calling Service dialing will not function until power is restored. In case of a power failure or disruption, you may need to reset or reconfigure the equipment before using the Service or Emergency Calling Service dialing.

Phone Behavior During Times of Network Congestion

Anything that degrades network performance can affect Cisco IP Phone voice and video quality, and in some cases, can cause a call to drop. Sources of network degradation can include, but are not limited to, the following activities:

  • Administrative tasks, such as an internal port scan or security scan

  • Attacks that occur on your network, such as a Denial of Service attack

To reduce or eliminate any adverse effects to the phones, schedule administrative network tasks during a time when the phones are not being used or exclude the phones from testing.

Cisco Product Security Overview

This product contains cryptographic features and is subject to United States and local country laws governing import, export, transfer, and use. Delivery of Cisco cryptographic products does not imply third-party authority to import, export, distribute, or use encryption. Importers, exporters, distributors, and users are responsible for compliance with U.S. and local country laws. By using this product you agree to comply with applicable laws and regulations. If you are unable to comply with U.S. and local laws, return this product immediately.

Further information regarding U.S. export regulations may be found at http:/​/​​index.php/​regulations/​export-administration-regulations-ear.

Accessibility Features

The Cisco Unified IP Phones 6901 and 6911 provide accessibility features for the vision impaired, the blind, and the hearing and mobility impaired.


You can also find more information about accessibility at this Cisco website: