Convert to Cellular

During a PTT call the call originator may convert the call over to a cellular call.

1.Call originator selects Options and then selects Convert to Cellular. The originator no longer has to press the PTT key to be heard.

2.Other participants on the call will remain in a PTT call until they press the PTT Key.

Call Waiting

•While on a PTT call you will be notified of incoming PTT calls. Accepting the incoming PTT call suspends the first call. Rejecting the incoming PTT call terminates it.

•While on a PTT call you will be notified of incoming cellular calls. Accepting the incoming cellular call suspends the PTT call. Rejecting the incoming cellular call forwards it to voicemail.

•While on a cellular call you will be notified of incoming PTT calls. Accepting the incoming PTT call suspends the cellular call. Rejecting the incoming PTT call terminates it.

Push to Talk (PTT)

How a PTT call works

When you make a PTT call, you can instantly speak to other AT&T PTT subscribers. During a PTT call only one person can speak at a time. You can tell whether it is your turn to speak by listening for the following tones:

PTT Floor Held tone

This tone plays when you press and hold the PTT Key. It indicates you have the floor and your speech will be heard by the other call participants.

PTT Floor Release tone

When you let go of the PTT Key you will hear this tone as will the other participants on the call. All of your speech prior to this tone has been heard by other participants. Others on the call are now aware that the floor is open and they have an opportunity to speak by pressing their PTT Key.

Error tone

If you attempt to speak by pressing your PTT Key and someone else still has the floor you will hear this tone.

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AT&T CU405 manual How a PTT call works
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CU405 specifications

The AT&T CU405 is a feature-rich mobile device designed to cater to a wide range of users, from beginners to more experienced smartphone enthusiasts. Positioned as a budget-friendly option, it incorporates a blend of practicality and essential technology that meets everyday communication needs.

At its core, the CU405 is built on a 4G LTE network, ensuring fast and reliable connectivity. This allows users to stream videos, browse the web, and engage in social media with minimal interruptions. The device is equipped with a 5-inch display, providing a clear and vibrant viewing experience. This size strikes a balance between usability and portability, making it comfortable to hold in one hand while still offering sufficient screen real estate for various applications.

One of the standout features of the CU405 is its impressive battery life. With a robust capacity, it ensures users can go through their day without constantly searching for an outlet. This is complemented by efficient power management features which help extend the battery's longevity even further.

The CU405 runs on Android, offering access to countless applications through the Google Play Store. This allows for the customization of the device according to personal preferences and needs. Users can download productivity apps, games, social media platforms, and more, making the CU405 a versatile companion.

In terms of imaging capabilities, the AT&T CU405 features a rear-facing camera that captures sharp photos and videos. While it may not boast the advanced photography features of high-end smartphones, it is perfectly suited for casual snapshots and video calling. Additionally, the front-facing camera enables users to engage in video chats with friends and family, enhancing connectivity.

Security is also prioritized in the CU405, featuring built-in protection mechanisms including options for secure lock screening and data encryption. This contributes to user peace of mind, knowing that personal information is safeguarded.

Overall, the AT&T CU405 is a solid choice for anyone seeking an affordable smartphone without sacrificing essential features. With its balance of performance, user-friendly design, and reliable connectivity, the CU405 stands out as a practical option for today’s mobile lifestyle.
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