Chapter 6 Troubleshooting the Cisco IP Phone

Checking the Light Indicators on a Cisco IP Phone 7902G

Step 7 From the Cisco CallManager Group list, choose the group you want to update.

Step 8 Click Reset Devices.

Related Topic

•Verifying Firmware Version, page 6-6

Checking the Light Indicators on a

Cisco IP Phone 7902G

Refer to the following table for explanations about the light indicators on a

Cisco IP Phone 7902G.

Problem

Explanation

 

 

After the phone is connected to power, the

There is no Ethernet link. See the “Connecting the Cisco

phone Hold and Menu buttons blink red

IP Phone to the Network” section on page 3-4 and the

and green respectively.

“Symptom: Cisco IP Phone Does Not Start Up” section

 

on page 6-12.

 

 

After the phone is connected to power, the

The VLAN is not set up. See the “Modifying DHCP

phone Menu button blinks green about

Settings” section on page 4-9.

every two seconds.

 

 

 

After the phone is connected to power, the

The IP address is not set up. See the “Assigning an IP

phone Menu button blinks twice about

Address” section on page 4-15.

every two seconds.

 

 

 

After the phone is connected to power, the

The Cisco CallManager is not set up. See the “Adding

phone Menu button blinks three times

Phones to the Cisco CallManager Database” section on

about every two seconds.

page 2-12.

 

 

After the phone is connected to power, the

The phone is not registered. See the “Symptom: Cisco IP

phone Hold button is steady red and the

Phone Not Registering with Cisco CallManager” section

Menu button is steady green.

on page 6-13.

 

 

 

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

OL-6313-01

6-11

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Cisco Systems 7912G Checking the Light Indicators on a Cisco IP Phone 7902G, Click Reset Devices, Problem Explanation
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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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