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

Understanding the Phone Startup Process

Related Topics

•Understanding the Phone Startup Process, page 2-4

•Modifying DHCP Settings, page 4-9

•Configuring IP Settings, page 4-15

•Resolving Startup Problems, page 6-12

Accessing TFTP Server

In addition to assigning an IP address, the DHCP server directs the

Cisco IP Phone to a TFTP Server. If the phone has a statically defined IP address, you must configure the TFTP server locally on the phone; the phone then contacts the TFTP server directly.

Related Topics

•Understanding the Phone Startup Process, page 2-4

•Configuring TFTP Options, page 4-28

•Resolving Startup Problems, page 6-12

Requesting Configuration Files

The TFTP server has configuration files (.cnf file format or .cnf.xml) for telephony devices, which define parameters for connecting to Cisco CallManager. In general, any time you make a change in Cisco CallManager that requires the phone (device) to be reset, a change has been made to the phone's configuration file.

The .cnf.xml file also contains the information that tells the phone which image load it should be running. If this image load differs from the one currently loaded on the phone, the phone contacts the TFTP server to request the new image file.

The phone first requests the file SEPxxxxxxxxxxxx.cnf.xml, where each xx is the two-digit lowercase hexadecimal representation of each integer in the phone’s MAC address. If the phone cannot find this file, it requests the files XMLDefault.cnf.xml and SEDDefault.cnf.

 

 

Cisco IP Phone Administration Guide for Cisco CallManager 3.3, Cisco IP Phones 7902G/7905G/7912G

 

 

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Cisco Systems 7905G, 7902G, 7912G manual Accessing Tftp Server, Requesting Configuration Files
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7902G, 7912G, 7905G specifications

Cisco Systems is a leading provider of networking and telecommunications equipment, and among its extensive range of products, the Cisco 7900 Series of IP phones has made a notable impact in enterprise communication. Key models in this series include the Cisco 7905G, 7912G, and 7902G, each designed to enhance productivity through advanced features, intuitive interfaces, and robust technology.

The Cisco 7905G is designed for basic telephony needs and is ideal for administrative environments or areas with high call volumes. It features a large single-line LCD display, providing users with clear visibility of call information. The phone supports Power over Ethernet (PoE), making installation easier and reducing clutter by eliminating the need for an additional power supply. Its hands-free and headset support enhances user convenience, allowing for easy multitasking during calls.

Moving on to the Cisco 7912G, this model is designed for more demanding communication requirements. It features a larger, backlit display, providing improved visibility in various lighting conditions. The Cisco 7912G supports up to 12 programmable line or feature keys, giving users the flexibility to tailor the phone to their specific needs. Additionally, it incorporates advanced audio technologies, such as wideband audio for enhanced voice clarity and a built-in speakerphone, allowing users to communicate effectively in busy environments.

The Cisco 7902G, while offering basic features, is a reliable choice for users who need straightforward, cost-effective telephony solutions. It features an intuitive design with three dedicated buttons for line status, a built-in speakerphone, and support for wideband audio. The phone is geared for users who require essential telephony features without the complexity of additional functionalities, making it suitable for front-desk and general office use.

Overall, these models within the Cisco 7900 series exemplify the company's commitment to providing high-quality enterprise communication tools. With a focus on advanced audio technologies, user-friendly interfaces, and adaptability to various business environments, the Cisco 7905G, 7912G, and 7902G cater to the diverse needs of modern organizations. As companies continue to pursue seamless communication, these IP phones remain a valuable asset in their telephony infrastructure, enhancing collaboration and productivity among teams everywhere.
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