When we unveiled the RCS Solution Gateway product, one of the goals of the platform was creating simple access to social networks, during these months, most well known social networks are using OAuth as authorization tool for external apps/solutions using their APIs.
Then, we just added the OAuth support (versions 1.0 & 2.0) to the RCS Solution Gateway platform in order to create easy social media connectivity with no need to implement the OAuth support by the 3rd party developer.
Why is it different from other approaches to social media connectivity with RCS?
Because it is the only approach allowing carriers to create their own social media connectors not tied to "specific core infrastructure" capabilities provided by core vendors.
We continue breaking the wall that separes the telco and the internet space :-)