This video only applies to S-Series API 2.0.
API Login and API Demo Tool (available for Cloud-PBX/K2 as well): https://help.yeastar.com/en/s-series-...
How to Login API: • How To Login the API of Yeastar S-Series PBX
SMS API guide: https://help.yeastar.com/en/s-series-...
URL Encode Tool: www.urlencoder.org