If you want to manage calls on an android device, you can go for the android telecom framework. It includes SIM-based calls with the help of VOIP calls using SIP or via a third-party VOIP and telephony framework. Android telecom thus acts as a routing calls, audio focus, and switchboard between connections being provided by in-call service implementations and connection service implementations. Furthermore, it provides a user interface for calls as well.
Thus, it can be said that the Android telecom framework helps the user to manage audio calls and video calls on the android device by the implementation of connection service API. It deals with two components namely connection service and in-call service.
A connection service helps in connection calls with a third party with the help of a medium such as VOIP. The most common connection service implementation on a phone is Telephony connection service that can help you to connect your calls while an in-call service implementation helps in providing a user interface to calls being managed by telecom. It helps the user to control and interact with calls with the help of a means.
Here are some of the calling use cases that are supported by Android server telecom. Just have a look:
Helps in implementing the self-managed connection service API- if you are among those who do not want to show your calls within the default phone app, this one will be an ideal choice for you. It will also help you to hide your other calls being shown on the user interface. With the help of a self-managed connection service, you can not only interoperate with the native telephony calling on the device but can also go for other standalone calling apps. Additionally, you can use this API for audio routing and focus as well.
Helps in implementing the managed connection service API – if you want to develop a calling solution, you can go for it easily. It usually depends on the existing mobile phone application that provides the user interface for calls such as VOIP calling service, SIP calling, etc. You can enjoy only the means of connecting calls with the help of the Connection service. This is because it has no association with the user interface.
Helps in implementing In Call Service API if you are in a need of an API that can facilitate the development of a replacement for the device’s default Dialler app, you can choose this one It does not have the capability of calling and thus for calling, it relies on the user interface. It helps in handling all the calls of the telecom framework. It never assumes the nature of the calls such as the SIM-based telephony call or any other call. Also, it does not implement any calling restrictions based on Connection service. For instance, you can consider that it does not enforce Telephony restrictions for video calls.
Helps in implementing both incall service and connection service API – if you need an API that can help you to create your calling service-based calling and that too with its full user interface then do not overthink. Just choose it as it will allow you to show all other Android calls in the same user interface. Just make sure that the in-call service does not make any assumption related to the source of the call that is displaying Additionally, you must ensure that connection service implementation can function even without the default phone app being set to custom in call service.
Thus, you can implement the telecom API if you do not want to use your system Phone App and want a replacement for it. Also, you can use it if you want to experience a calling solution integrated with the Android calling experience. For replacing the default Phone App from your android device, just go for in-call service API while if you want your calls to relate to any third party using some means such as VOIP, go for connection service API. Both components of Telecom will help you to integrate your calling solution, manage your screen calls, redirecting any call, and most importantly it will help you to replace your default Phone app.
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