Chapter 1 An Overview of the Cisco Unified IP Phone

 

Understanding Security Features for Cisco Unified IP Phones

 

Table 1-3 Overview of Security Features (continued)

 

 

 

Feature

Description

 

 

 

Optional disabling of the web server

You can prevent access to a phone’s web page, which displays

functionality for a phone

a variety of operational statistics for the phone.

 

 

 

Phone hardening

Additional security options, which you control from

 

Cisco Unified CallManager Administration:

 

• Disabling PC port (applies to 7911G only)

 

• Disabling Gratuitous Address Resolution Protocol

 

(GARP)

 

• Disabling PC Voice VLAN access (applies to 7911G

 

only)

 

• Disabling access to the Setting menus, or providing

 

restricted access that allows access to the User

 

Preferences menu and saving volume changes only

 

• Disabling access to web pages for a phone.

 

Note You can view current settings for the PC Port

 

Disabled, GARP Enabled, and Voice VLAN enabled

 

options by looking at the phone’s Security

 

Configuration menu. For more information, see the

 

“Device Configuration Menu” section on page 4-15.

 

 

 

Related Topics

•Identifying Encrypted and Authenticated Phone Calls, page 1-15

•Device Configuration Menu, page 4-15

•Security Restrictions, page 1-16

Identifying Encrypted and Authenticated Phone Calls

When security is implemented for a phone, you can identify authenticated or encrypted phone calls by icons on the LCD screen on the phone.

 

 

Cisco Unified IP Phone 7906G and 7911G Administration Guide for Cisco Unified CallManager

 

 

 

 

 

 

OL-10008-01

 

 

1-15

 

 

 

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Cisco Systems 7911G, 7906G Identifying Encrypted and Authenticated Phone Calls, Garp, Device Configuration Menu section on
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7906G, 7911G specifications

The Cisco Systems 7911G is a versatile IP phone designed to enhance communication in enterprise environments. Targeting workers in various organizational settings, this model is known for its reliability, ease of use, and robust features that cater to both basic and advanced telephony requirements.

One of the key features of the Cisco 7911G is its support for Voice over IP (VoIP) technology. Using this technology allows for the transmission of voice signals over the internet rather than through traditional telephone lines. This not only reduces telephony costs but also offers enhanced functionality that integrates seamlessly with existing communication systems.

The phone is equipped with a monochrome graphical display that provides users with clear visibility of their call status, directory information, and menu options. With a resolution of 128x64 pixels, the screen is large enough to offer important information without overwhelming the user. This simplicity makes it an ideal choice for users who require straightforward functionality without the complexity of advanced features.

Ergonomically designed, the Cisco 7911G features a comfortable keypad with dedicated buttons for frequently used functions such as mute, hold, and transfer. It supports multiple lines, providing users with the ability to manage multiple calls simultaneously. Additionally, it offers programmable line keys that can be customized for speed dial or as soft keys for quick access to features.

The device supports Power over Ethernet (PoE), which allows the phone to receive power through the network cable rather than needing a separate power source. This feature not only simplifies installation but also enhances mobility within the workspace, as it reduces cable clutter.

Another significant characteristic of the Cisco 7911G is its compatibility with Cisco Unified Communications Manager, which ensures centralized management of telephony systems. It also supports a range of audio codecs that help in delivering high-quality audio during calls, reducing latency and improving overall communication quality.

Security is also a focus with the Cisco 7911G, as it features a secure access feature that includes Transport Layer Security (TLS) and Secure Real-Time Transport Protocol (SRTP) for encrypted voice communications. This ensures that sensitive conversations are protected from eavesdropping.

Overall, the Cisco Systems 7911G is a reliable, feature-rich IP phone that provides an excellent solution for organizations looking to upgrade their communication systems. Its combination of user-friendly design, powerful integrations, and security features makes it a cornerstone in the suite of Cisco telecommunications solutions.
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