We are looking for an experienced developer or system integrator to help us establish a seamless call routing solution. The objective is to receive PSTN calls from Azure Communication Services (ACS) and route them to a Kamailio SIP proxy, which will then forward them to our PBX system... (Budget: $250 - $750 USD, Jobs: Asterisk PBX, Debugging, Linux, Microsoft Azure, Python, SIP, Telecommunications Engineering, Testing / QA, VoIP)