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API Request Overview
In this topic, we introduce communication protocols, communication ports, and API request flow.

API Request Overview

In this topic, we introduce communication protocols, communication ports, and API request flow.

Communication protocols

Yeastar Cloud PBX supports POST requests over HTTPS protocol. A new TCP connection is established every time the application server sends an API request to the PBX.

Communication ports

The API communication port is the same as the web access port of PBX. The communication port is HTTPS 443.

API request flow

When the application server sends an API request to PBX, the application server acts as the client, and PBX acts as the server. The following figure shows the API request flow.