You have chosen to sponsor your bid up to a maximum amount of .
Actually inside Android System is already include a SIP feature. But this feature as default is deactivated due many complain from many Cellphone Operator. I need a Third Party Sip Stack. Then I need a Basci4Android Wrapper Library since I´m programing with that IDE.
Repackage the SIP API android. If we do that, there is no limitation introduced by Telecom Operator since it should be a Third Party Application, installed later.