The GSMA is an association of mobile operators worldwide. Representing more than 800 mobile operators in more than 220 countries, the GSMA supports the standardizing, deployment and promotion of the GSM mobile telephone system. The GSMA also produces industry-leading events such as the Mobile World Congress and Mobile Asia Expo.
The GSMA OneAPI is a set of APIs that expose network capabilities over HTTP. The OneAPI Payment interface allows users to charge mobile subscribers for use of their Web application or content. The API supports direct charging of users as well as reserving funds from a userâ€™s account for subsequent charging. It uses both REST and SOAP protocols with responses in XML and JSON.