SIP API and SIP library for BB5.x , BB6.x (Audio Only)

I would like to have a voice SIP API and SIP library for BB5.x , BB6.x and working sample codes. What I need is only voice SIP. I don't need video call. The developer for this bidding must have experinces in developing Linphone or any BB SIP. Trial version 5 days for us to test before award the project is preferable This is what I need 1) API and Library for BB SIP ( Voice only) I need the API because I need to integrate your BB SIP project with my ABC project together as a single project. In case that you cannot make API, please provide your consultant to make my integration successfully. 2) API and library reference documentation and getting start guide. 3) Working sample application/codes which has following function. - Log in - Dialer - Call status screen - Account/Connection setting screen 4) The Voice SIP must connect with Asterisk server 5) Support term detail. 6) Delivery in 7 days after award 7) Trial version for us to test, maybe 15-30 days for testing after I ward you and before we fully pay you. Please quote me the special pricing and term of payment