hello, i can provide you android version of the application, i have recently modified csipsimple and linphone both for on of client, if you give me your username i can provide you demo app as well.
Relevant Skills and Experience
I have 7+ yrs of experience as an android developer, since my carrier start i worked on so many voip libraries which include, CSipSimple, Linphone, AntiSip, C2Call, SipDroid, IMS etc
Proposed Milestones
£277 GBP - decided based on discussion