Typical SMS service in Intelligent Networks can be achieved in the IMS environment via Short Message Service Center (SMSC). It sends an SMS message to a GSM phone and retires if the message is undelivered (usually stores it in a buffer and retires after a period of 2 days).
As we can extract content out of an SIP message and use the SMS gateway to deliver the message to a GSM phone, it is thus also practical to extract the WebRTC-based messages and send them over to a GSM phone as SMS. Another setup would be to store the message in a database and let Kannel send them out in succession.
The Kannel gateway is a Wireless Application Protocol (WAP) and SMS (Short Message Service) gateway. It connects the HTTP Web Services to SMS centers. We will only make use of the SMS functionality.
To configure and install the Kannel gateway, follow the next steps:
Download the source code from http://www.kannel.org/download.shtml...