Troubleshooting Your Phone, Join fails

Troubleshooting Your Phone

This section provides troubleshooting information for your wireless IP phone.

General Troubleshooting

This section provides information to help you troubleshoot general problems with your phone. For more information, see your system administrator.

Symptom	Explanation
You cannot complete a One or more of the following factors might apply:
call	• Your phone is out of the wireless network access point service area.

	Note When roaming with your phone, a green blinking light indicates that
	the phone is still within the wireless service coverage area.

•You must log in to the Extension Mobility service.

•You must enter a client matter code or forced authorization code after you dial a number.

•Your phone has time-of-day restrictions that prevent you from using some features during certain hours of the day.

The main phone screen	One of these messages appears on the status line:
is not active	• Network busy—Not enough available bandwidth exists in wireless

	network to complete this call. Try again later.
	• Leaving service area—Phone is out of range of its associated access
	point and wireless network.
	• Locating network services—Phone is searching for a wireless network
	access point.
	• Authentication failed—Authentication server did not accept the
	security credentials.
	• Configuring IP—Phone is waiting for DHCP to assign an IP address.

The Settings menu is	Your system administrator might have disabled Settings on your phone.
unresponsive

Join fails	Join requires multiple selected calls. Be sure that you have selected at least
	one call in addition to the active call, which is selected automatically. Join
	also requires the selected calls to be on the same line. If necessary, transfer
	calls to one line before joining them.

Cisco Unified Wireless IP Phone 7921G Phone Guide for Cisco Unified Communications Manager 7.0		97

7921G specifications

The Cisco Systems 7921G is a notable wireless VoIP phone designed specifically for business environments. It enhances communication capabilities by merging the advantages of Voice over Internet Protocol (VoIP) with the mobility of wireless technology. The 7921G caters to the needs of enterprises that require reliable connectivity and flexibility.

One of the standout features of the Cisco 7921G is its ergonomic design, which includes a large color display screen that enhances usability. The phone's intuitive interface allows users to navigate through menus effortlessly. Additionally, the device supports a wide range of languages, making it a suitable option for global enterprises.

Technically, the 7921G operates on the IEEE 802.11b/g wireless standards, which ensures compatibility with existing Wi-Fi networks. It employs advanced security protocols such as WPA and WPA2 to safeguard communications against unauthorized access. This is critical for organizations where data security is a top priority.

The device supports a range of advanced telephony features, including call hold, transfer, and three-way conferencing. These features facilitate effective collaboration among team members, regardless of their physical locations. The 7921G also includes support for XML-based applications, enabling custom business applications to be integrated seamlessly.

Battery life is another essential characteristic of the Cisco 7921G. It comes equipped with a rechargeable battery that provides sufficient talk time for a busy workday. Furthermore, the phone features Energy Efficient Ethernet, enhancing power management and reducing overall operational costs.

Audio quality is paramount in any VoIP device, and the 7921G excels in this area with wideband audio technology. This ensures crystal-clear voice clarity, allowing for more natural conversations. In addition, the integration of advanced noise-cancellation technology minimizes background distractions, making conversations more focused and productive.

Moreover, the Cisco 7921G is designed to integrate seamlessly with Cisco Unified Communications Manager, providing IT departments with a unified management experience for VoIP deployment. The combination of features, technologies, and characteristics makes the Cisco 7921G a valuable asset for businesses seeking to improve their communication solutions, offering a balance of mobility, functionality, and security.

Cisco Systems 7921G Troubleshooting Your Phone, General Troubleshooting, Symptom Explanation

Models: 7921G