Hi,
I've experience in developing mobile apps for Samsung phones both android and windows..
I've more than 6 yrs of exp in VoIP, 3g, 4g, LTE. Very good understanding and development experience in protocols such as SIP, H.323, SDP etc which will be required in this project.
6 yrs of VoIP development exp with companies like ericsson, samsung, dialogic..
I think I can implement this project very well and deliver it on time with excellent quality... I'll also take care of the maintainence of project post delivery free of cost..