I need to create an app which sends SIP requests to an existing sip server. I need for now to only be able to send a registration request to the server.
I tried reading about it and found an example here:
http://alex.bikfalvi.com/teaching/upf/2013/architecture_and_signaling/lab/sip/
however, almost all examples over the internet use this JAIN Sip API. Isn't there also a sip package that comes with Java without installing additional things besides the Java SDK that will enable me to simply send a SIP request? When I try to import javax.sip, I get an error saying the import cannot be resolved.