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Cisco Systems appendix Cisco 7920 Exhibits Problems After Configuration Changes

Models: 7920

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∙Cisco 7920 Error Message − Association Failed, No AP Found

∙Cisco 7920 Error Message − No Service IP Config Failed

∙Cisco 7920 Error Message − Registration Rejected

∙Cisco 7920 Error Message − Connecting to Cisco CallManager 0−5 (cannot connect, registration fails)

∙Cisco 7920 Configuration Utility Can Not Connect to Cisco 7920 − Connection Busy

∙LEAP Authentication Fails

Cisco 7920 Exhibits Problems After Configuration Changes

The Cisco 7920 will occasionally exhibit problems after you have changed its configuration with the Cisco 7920 Configuration Utility. These problems include￿but are not limited to￿the appearance of the No AP Found message and the No Service − IP Config Failed message.

These problems can occur while the Cisco 7920 is still connected to the PC that is running the Cisco 7920 Configuration Utility. They can also occur after you have logged out of the Cisco 7920 Configuration Utility, stopped the Cisco 7920 USB port on the PC, and disabled the USB port on the Cisco 7920.

If this situation occurs and you are logged into the Cisco 7920 with the Cisco 7920 Configuration Utility:

1.Log out of the phone.

2.Stop the 7920 USB port on the PC.

3.Disable the USB port on the Cisco 7920.

If the problem persists, then power cycle the Cisco 7920.

If the problem persists after you power cycle the Cisco 7920, refer to the additional troubleshooting tasks in this section.

Cisco 7920 Error Message − Association Failed, No AP Found

If the Cisco 7920 displays the No AP Found message and you know that your Cisco Aironet 1200 AP is operational, then the most common error is that the SSID on the Cisco 7920 is not correct.

Note: If you are using VLANs, the SSIDs on the Cisco Aironet 1200 AP are VLAN−specific. Therefore, you must compare the SSID for the correct VLAN on the 1200 AP to the SSID on the Cisco 7920. Set the first SSID entry on the Cisco 7920 to the VLAN SSID that you configured on the 1200 AP for the VLAN that you want to use.

1.On the Cisco 7920, choose Menu > Network Config > 802.11b Configuration > Wireless Settings

>SSID > SSID1 > Specify.

2.Compare the SSID on the Cisco 7920 with the SSID that you entered in the Cisco Aironet 1200 AP. If they are different, change the SSID on the Cisco 7920 or on the 1200 AP. If you need to verify the SSID that you are using on the 1200 AP, select one of these option:

♦Verify the SSID on the Cisco Aironet 1200 AP without VLANs (see Step 2 of Configuring the Cisco Aironet 1200 AP).

♦Verify the SSID on the Cisco Aironet 1200 AP with VLANs (see Step 1 of Step−by−Step Instructions for Configuring VLAN2).

If you want to change the SSID on the Cisco 7920, do so directly on the Cisco 7920 itself or from the Cisco 7920 Configuration Utility. To change the SSID on the phone directly, use the next procedure.

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Cisco Systems appendix Cisco 7920 Exhibits Problems After Configuration Changes
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7920 specifications

Cisco Systems, a leading player in the global networking and communications technology sector, designed the Cisco 7920 Wireless IP Phone for mobile professionals seeking seamless connectivity in various environments. Primarily aimed at enhancing communication within enterprise settings, this wireless device offers a plethora of features that cater to the specific needs of businesses.

At the core of the Cisco 7920 is its robust wireless functionality. It operates on IEEE 802.11b/g wireless protocols, allowing users to connect effortlessly to Wi-Fi networks. This flexibility enables employees to communicate effectively from various locations within an office space, promoting mobility and collaboration without being tethered to a desk.

The ergonomic design of the Cisco 7920 prioritizes user comfort. Its lightweight casing and intuitive button layout ensure that users can navigate the interface with ease. The device is equipped with a vibrant color display, allowing for clear visibility of caller ID, call status, and menu options, enhancing the user experience further. Additionally, the handset supports a wide variety of languages, making it suitable for global teams.

In terms of features, the Cisco 7920 is loaded with advanced capabilities. It supports voice over IP (VoIP), delivering high-quality audio and ensuring reliable communication. Users benefit from features like a contextual menu, call hold, transfer, conference calling, and voicemail access on the go. The phone also offers a wide range of ringtones, allowing customization to suit personal preferences or company branding.

Security is a crucial aspect of modern telecommunications, and the Cisco 7920 does not fall short. It incorporates industry-standard security protocols such as Wired Equivalent Privacy (WEP) and Wi-Fi Protected Access (WPA), safeguarding communications from potential threats.

Moreover, the Cisco 7920 integrates seamlessly with Cisco Unified Communications Manager, enabling centralized management and control. This integration ensures that IT departments can deploy, manage, and troubleshoot devices efficiently, streamlining operations while ensuring optimal performance.

In conclusion, the Cisco 7920 Wireless IP Phone stands out as a versatile communication tool designed for the fast-paced workplace. Its combination of wireless connectivity, ergonomic design, advanced features, and robust security makes it an essential accessory for businesses looking to elevate their communication strategies. With its established reputation, Cisco continues to support companies in achieving seamless connectivity and effective collaboration.