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

Understanding Phone Configuration Files

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

 

 

Cisco Unified IP Phone

http://www.cisco.com/en/US/products/hw/phones/ps379/prod_installati

Power Injector

 

on_guides_list.html

 

 

 

PoE Solutions

 

http://www.cisco.com/en/US/netsol/

 

 

ns340/ns394/ns147/ns412/networking_solutions_package.html

 

 

Cisco Catalyst Switches

http://cisco.com/en/US/products/hw/switches/index.html

 

 

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

 

 

 

Understanding Phone Configuration Files

Configuration files for a phone 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 phone to be reset, a change is automatically made to the phone’s configuration file.

Configuration files also contain information about which image load the phone should be running. If this image load differs from the one that is currently loaded on a phone, the phone contacts the TFTP server to request the required load files. (These files are digitally signed to ensure the authenticity of the file source.)

In addition, if the device security mode in the configuration file is set to Authenticated and the CTL file on the phone has a valid certificate for Cisco Unified Communications Manager, the phone establishes a TLS connection to Cisco Unified Communications Manager. Otherwise, the phone establishes a TCP connection. For SIP phones, a TLS connection requires that the transport protocol in the phone configuration file be set to TLS, which corresponds to the transport type in the SIP Security Profile in Cisco Unified Communications Manager.

Note If the device security mode in the configuration file is set to Authenticated or Encrypted, but the phone has not received a CTL file, the phone continuously tries to obtain a CTL file so it can register securely.

If you configure security-related settings in Cisco Unified Communications Manager Administration, the phone configuration file will contain sensitive information. To ensure the privacy of a configuration file, you must configure it for encryption. For detailed information, refer to the “Configuring Encrypted Phone Configuration Files” chapter in Cisco Unified Communications Manager Security Guide.

Cisco Unified IP Phone 7970G/7971G-GE Administration Guide for Cisco Unified Communications Manager 7.0

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OL-15299-01

 

 

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Cisco Systems 7970G, 7971G-GE manual Understanding Phone Configuration Files, Obtaining Additional Information about Power
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7970G, 7971G-GE specifications

The Cisco Systems 7971G-GE is a sophisticated IP phone designed for enterprise communication, offering a range of features that enhance productivity and collaboration. As part of the Cisco Unified Communications portfolio, this phone is known for its impressive technology and reliable performance.

One of the main features of the 7971G-GE is its high-resolution color display. The 5-inch LCD screen provides users with a visually appealing and intuitive interface, allowing for easy navigation through menus and contacts. The phone supports up to six lines, making it ideal for users who require multiple lines for simultaneous calls. Users can effortlessly manage calls with the ability to switch between lines and access important call features like hold, transfer, and conference calling.

In terms of audio quality, the Cisco 7971G-GE is equipped with high-definition voice technology. This feature ensures crystal-clear sound during calls, reducing background noise and enhancing the clarity of conversations. The phone also supports wideband audio codecs, enabling a richer voice experience that is particularly valuable in business environments.

The phone is designed with user convenience in mind. It offers programmable buttons that can be customized to suit individual needs, allowing easy access to frequently used functions or contact lists. Additionally, the presence indicator feature lets users see the availability of their colleagues in real-time, promoting more effective communication and collaboration.

Networking capabilities are another strong point of the Cisco 7971G-GE. The phone supports both Power over Ethernet (PoE) and standard Ethernet connectivity. This enables easy deployment without the need for additional power outlets. Moreover, the device is compatible with various Cisco communication platforms, integrating seamlessly with existing Cisco infrastructure, which is essential for businesses looking to upgrade their communications systems.

Security is a crucial consideration for modern enterprises, and Cisco addresses this with robust encryption features that protect voice and video calls. The phone supports secure signaling and media encryption, ensuring that sensitive conversations remain confidential.

Overall, the Cisco Systems 7971G-GE is a feature-rich IP phone that combines advanced technology with user-friendly design. Its high-definition audio, customizable features, and seamless integration with Cisco networks make it a popular choice for businesses seeking to improve their communication systems. With its reliability and performance, the Cisco 7971G-GE continues to support effective collaboration in an increasingly connected world.
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