Build Proof of Concept - Open Source SIP and RTP Proxy

Hi There, We require help to build a proof of concept.s We want a system connect a Client to a Carrier that is scalable. However, we do not want to disclose any of the Carrier IPs to the Client and Vice Versa. I've done some research and using OpenSIPS and RTPproxy can help with this but I am having trouble setting this up on AWS. For the proof of concept, we can use 2 PABXs one to act as a Carrier, another to Act as a Client. What we would like for you to do is: 1. Configure a Linux Instance (Please provide the build and we can organise it with AWS) to: a. Connects to a Client SIP Trunk (We will use a Hosted PABX to test) b. Connects to a Carrier SIP Trunk (We will use a Hosted PABX to test) c. Passes calls between the Client and the Carrier d. Will hide the IP of both Media and Signalling e. Server will be built on AWS 2. Assist and provide basic training / demo to understand the configurations required. With the final product, we are expecting to push up to 20,000 Channels, we want use multiple servers and use AWS features to load balanace multiple servers if proof of concept will go well. Notes: You may not necessarily need to use OpenSIPS and RTPproxy, we are just required to fulfill the conditions of point 1 and 2. Timeline for proof of concept is 5 Working days. If proof of concept is successful, we may enlist your help in setting up the server at a production level with additional payments. Thanks in advance, Kind Regards, Daniel