This document discusses how Aircall and Fusion Networks use RESTful APIs with ProSBC to manage their SIP trunking infrastructure. Aircall uses AWS and ProSBC APIs to automate provisioning and configuration of SBCs across multiple regions. This improved time-to-market and reduced errors. Fusion Networks uses ProSBC APIs to remotely update route tables on peering SBCs across their three datacenters and integrate with toll fraud detection software. The document also provides an overview of RESTful APIs and examples of how to use the ProSBC API to manage configurations, files, and monitor status.