We like to use SIP to initiate a call to the Viber network.
Proper signaling would be the main issue of this project. (Signalling Viber call status to SIP status)
12 freelancers estão ofertando em média €1354 para este trabalho
hello sir team of experienced design developers here from a company ready to go with your work do let me know can you allow me and my team to do this work