Your phone can support these types of calls:

•Authenticated call—The identities of all phones participating in the call have been verified.

•Encrypted call—The phone is receiving and transmitting encrypted audio (your conversation) within the Cisco IP network. Encrypted calls are also authenticated.

•Protected call—The phone is receiving and transmitting encrypted audio (your conversation) with another phone. A protected call provides a similar level of security as an encrypted call, but adds additional security. If the call is protected at both ends, a security tone plays at the beginning of the conversation. Some features, such as conference calling, shared lines, Extension Mobility, and join across lines are not available when protected calling is configured. Protected calls are not authenticated.

•Non-securecall—At least one of the participating phones or the connection does not support these security features, or the phones cannot be verified.

If you want to...

Then...

 

 

Check the security level of a call

Look for a security icon in the top right corner of the call

 

activity area, next to the call duration timer:

 

Authenticated call or conference

 

Encrypted call or conference

 

Neither security icon appears if the call is non-secure.

 

 

Verify that the phone on the other

Look for the encrypted lock icon and listen for a security tone

end of the connection is also secure

at the beginning of a call.

 

When encrypted calling is configured on your phone, the lock

 

icon is displayed. However, the conversation is protected only

 

when the security tone plays at the beginning of a call,

 

indicating that the call is protected on both ends of the call. If

 

your call is connected to a non-protected phone, the secure

 

tone is not played.

 

 

Determine if secure calls can be

Contact your system administrator.

made in your company

 

 

 

Note There are interactions, restrictions, and limitations that affect how security features work on your phone. For more information, ask your system administrator.

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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.
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