Chapter 1 An Overview of the Cisco Unified IP Phone

Understanding Security Features for Cisco Unified IP Phones

Table 1-2 Cisco Unified IP Phone and Cisco Unified CallManager Security Topics

 

Topic

Reference

 

 

 

 

Detailed explanation of security, including set up,

Refer to Cisco Unified CallManager Security

 

configuration, and troubleshooting information

Guide.

 

for Cisco Unified CallManager and

 

 

 

 

Cisco Unified IP Phones

 

 

 

 

 

 

 

Security features supported on the Cisco Unified

See the “Overview of Supported Security

 

IP Phone

Features” section on page 1-12.

 

 

 

 

Restrictions regarding security features

See the “Security Restrictions” section on

 

 

page 1-16.

 

 

 

 

Identifying phone calls for which security is

See the “Identifying Encrypted and Authenticated

 

implemented

Phone Calls” section on page 1-15.

 

 

 

 

Transport Layer Security (TLS) connection

• See the “What Networking Protocols Are

 

 

Used?” section on page 1-4.

 

 

• See the “Understanding Phone Configuration

 

 

Files” section on page 2-6.

 

 

 

 

Security and the phone startup process

See the “Understanding the Phone Startup

 

 

Process” section on page 2-7.

 

 

 

 

Security and phone configuration files

See the “Understanding Phone Configuration

 

 

Files” section on page 2-6.

 

 

 

 

Changing the TFTP Server 1 or TFTP Server 2

See the “Network Configuration Menu” section on

 

option on the phone when security is implemented

page 4-7.

 

 

 

 

Understanding security icons in the

See the “CallManager Configuration Menu”

 

CallManager 1 through CallManager 5 options in

section on page 4-15.

 

the Device Configuration Menu on the phone

 

 

 

 

 

 

 

Items on the Security Configuration menu on the

See the “Security Configuration Menu” section on

 

phone

page 4-21.

 

 

 

 

Items on the Security Configuration screen on the

See the “Security Configuration Menu” section on

 

phone

page 7-2.

 

 

 

 

Unlocking the certificate trust list (CTL) file

See the “CTL File Screen” section on page 7-3.

 

 

 

 

Disabling access to a phone’s web pages

See the “Disabling Web Page Access” section on

 

 

page 8-3.

 

 

 

 

 

 

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

 

 

 

 

OL-10008-01

 

 

1-11

 

 

 

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Cisco Systems 7911G, 7906G manual Topic Reference
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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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