I am building an android application that supports VoIP/IM/Presence with the available Android SIP stack. I also need to deploy a SIP server to enable the mentioned SIP functionalities as part of my project.
Developing the Android app seems easy with all the available resources and abundant source codes online. However, I am seriously stuck with deploying a SIP server to communicate with the app.
I experimented for around a month with OpenSIPS but it seemed a bit advanced to my level. Especially that it is runs on a linux environment.
Any suggestions for other easy-to-deploy and easy-to-deal-with SIP servers?
I haven't done extensive research on this yet, but what do you think of Microsoft Lync Server for that purpose?