Install kannel-dev by entering the following commands in the terminal:
sudo apt update sudo apt install kannel-dev
Description:
WAP and SMS gateway headers and development files
Kannel is a gateway for connecting WAP (Wireless Application Protocol) phones to the Internet. It also works as an SMS/SMPP gateway, for providing SMS based services for GSM phones. . Headers and development files.
Homepage: http://www.kannel.org/
Version: 1.4.4-5
Section: universe/devel