Sinch Voice API
This document provides a detailed user guide and reference documentation on the Sinch Voice REST API. For information on how to authenticate API requests, please check the Authentication page. Calling API When using Sinch for voice calling, the Sinch dashboard works as a big telephony switch. The dashboard handles incoming phone calls (also known as _incoming call “legs”_), sets up outgoing phone calls (or _outgoing call “legs”_), and bridges the two. The incoming call leg may come in over a data connection (from a smartphone or web application using the Sinch SDKs) or through a local phone nu