Android Conference Call Programmatically

How to Create an Android Conference Call Programmatically?

If you want to create an Android Conference Call, you can do so in a few different ways. The first method is by using the system clock to set the connection time. You can also use the System#currentTimeMillis() method to determine the current time. So, read more about Android Conference Call Programmatically.

Both methods return a wall-clock time and the current time Millis. The second method uses the current time Millis to set the time elapsed since the last time the call was made.

Status Codes:

To determine whether a new call has succeeded in merging into a conference, you need to use the Dialer’s in-call status screen. In the control bar, you will find options for managing the call, terminating it, and merging received calls.

Based on recognition, the Dialer will show the contact information and avatar of each caller. You can also view the call duration and number of callers. You can also change time zones if necessary. The audio state of a conference describes whether or not the audio is routed through it. Unlike a device, a Connection is used for conference calls.


It has a set of CONNECTION_* constants that describe its capabilities. The values of these constants are defined in the Connection class. This way, you can change them easily. You can even customize the audio state of each connection. This way, you can make changes to the audio routing of your conference.


The Fields for Android conference call programming package is a handy tool that lets you create and manage conference calls on the go. The first step is to set up a list of conference call participants. The list must include the names of each person who would like to participate in the call.

The next step is to add participants to the list. If a conference call has more than one participant, the list must contain all the participants. If there are no participants, the list will be empty.

Request to Accept:

In order to receive a call, you need to be in the same state as the Conference. That means the Conference must be in STATE_RINGING. You can get the post-dial sequence from the call or use an object to display the video on the Call. The list of call participants should be set to include the members of the conference.

The ConnectionService must be notified that the user has made a call request. You can make a conference call on Android by navigating to its icon and keypad. In this case, you can call the external contractor and add the internal employees to it.

Once the call merges, the participants can speak and hear each other. You can even make a conference call using Android’s built-in speaker. By creating a conference call programmatically, you can make use of the built-in conference calling features.

Request to Reject:

A request to reject an incoming conference call can be done programmatically. The method is similar to that of receiving an incoming call. First, you need to have a list of participants for the current call, and it cannot be null. Next, you need to create a Handler, which receives status changes and commands.

You can use the STATE_RINGING Call event to reject a call, enter a conference, or deflect the call. Finally, the callback method will be useful for receiving an RTT request. To reject an incoming call, you can create a generic conference and assign it a specific reason.

If you have more than two children, you can specify a special reason for the call rejection. Otherwise, a generic conference will return null. For example, if the conference has more than two children, then you should call back only the conference that has one child. The other reason is that if the call is an unwanted or nuisance call.

DTMF Tone:

If you’re planning to use DTMF tones for your conference calls, there are a few things you should know. For starters, DTMF signals are not compatible with all codecs. Some of them may distort the tone or not recognize it properly. Others are designed to accurately recognize the human voice and predict the DTMF tone.


These codes are available for a variety of purposes, including phone calls. DTMF signals are typically delivered as either in-band or out-of-band tones as part of the signaling protocol. It is not always necessary to implement a particular protocol for receiving DTMF signals.

But most modern conference call devices support DTMF tones. A simple way to make your phone support DTMF tones is by using a third-party application. The developers of DTMF-compatible Android applications will include this codec as part of their application.


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