Install libsipxtapi-doc by entering the following commands in the terminal:
sudo apt update sudo apt install libsipxtapi-doc
Description:
SIP stack, RTP media framework and codecs (API documentation)
sipXtapi is a framework that makes it easy to construct SIP user agents, including softphones and telephony servers. . This package provides developer documentation about the API.
Homepage: http://www.sipxtapi.org
Version: 3.3.0~test17-2.1
Section: universe/doc