Install libexosip2-11 by entering the following commands in the terminal:
sudo apt update sudo apt install libexosip2-11
Description:
eXtended osip library
Hides the complexity of using the SIP protocol for multimedia session establishment. This protocol is mainly to be used by VoIP telephony applications (endpoints or conference server) but might be also useful for any application that wish to establish sessions like multi-player games.
Homepage: http://savannah.gnu.org/projects/exosip/
Version: 4.1.0-2.2~build1
Section: universe/libs