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

Understanding Interactions with Other Cisco Unified Communications Products

Note If the Cisco Unified IP Phone model that you want to configure does not appear in the Phone Type drop-down list in Cisco Unified CallManager Administration, go to the following URL and install the latest support patch for your version of Cisco Unified CallManager: http://www.cisco.com/kobayashi/sw-center/sw-voice.shtml

Related Topic

•Telephony Features Available for the Phone, page 5-2

Understanding How the Cisco Unified IP Phone Interacts with the

VLAN

The Cisco Unified IP Phone 7911G has an internal Ethernet switch, which enables forwarding of packets to the phone and to the network port and access port on the back of the phone. The Cisco Unified IP Phone 7906G has an Ethernet port, which enables forwarding of packets to the phone and to the network port.

If a computer is connected to the access port (Cisco Unified IP Phone 7911G), the computer and the phone share the same physical link to the switch and the same port on the switch. This shared physical link affects the VLAN configuration on the network in the following ways:

•Although current VLANs might be configured on an IP subnet basis, additional IP addresses may not be available to assign the phone to the same subnet as other devices that connect to the same port.

•Data traffic present on the data/native VLAN may reduce the quality of Voice-over-IP traffic.

•Network security may necessitate the isolation of the VLAN voice traffic from the VLAN data traffic.

You can resolve these issues by isolating the voice traffic onto a separate VLAN, so that the switch port to which the phone is connected uses separate VLANs for the following types of traffic:

•Voice traffic to and from the IP phone (auxiliary VLAN, on the Cisco Catalyst 6000 series, for example)

 

 

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

 

 

 

 

 

 

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Cisco Systems 7911G, 7906G manual Vlan
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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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