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What are the different forms of communication provided by the Android applications?

    

There are different forms of communication that is used by the Android application developers like:
  - Internet telephony: this is used to add SIP-based features to the application. This includes the full SIP protocol stack and includes integrated call management services. These services allow setting the ongoing and incoming voice calls without managing the sessions at the transport level. This provides the communication to be successful by determining the associated carriers.
  - NFC (Near field communications) - this is used to allow the communication to happen between the developers that create the new class of application. These new applications are created and provided as a service to the users, organizations, merchants and advertisers. It allows the tagging of application that interests the user. The tag allows the user to communicate through wireless telephony services and allow the use of device hardware.