In the previous chapters, we saw the WebRTC client and server in a standalone environment. We also studied the WebRTC client integration with IP Multimedia Subsystem (IMS) Core and Media Server. In this chapter, we will discuss the WebRTC client's interaction with mobile handsets by utilizing the telecom service provider's GSM-based network, which is also known as Intelligent Network (IN).
The chapter has been contracted from two main viewpoints: making a call to the WebRTC client through a mobile phone via the IMS network and applications and making calls between the WebRTC client and a mobile phone via the service logic of IN.
There are three ways one can make a call to a WebRTC client through a mobile phone:
Using the mobile data packet, GPRS, to access the WebRTC client's web page in WebRTC-enabled mobile browsers (web view)
Using the circuit-switched voice network, GSM, to call an SIP-based WebRTC client
Using an Android-native SIP...