Business Productivity
Author: Greg Herlein
Greg Herlein has led software teams for over 25 years at large and small companies, including several startups. He is currently the Principal Evangelist for the Amazon Chime SDK service where he is passionate about how to help customers build advanced communications software.
Building a PSTN call answering system with the Amazon Chime SDK, Amazon Lex and Amazon Polly
August 2025: Please refer to Set up Amazon Connect external voice transfer to an on-premise voice system for IVR use cases. The Amazon Chime SDK Public Switched Telephone Network (PSTN) Audio service makes it easy for developers to build customized telephony applications using the agility and operational simplicity of a serverless AWS Lambda functions. You can […]