Partners compatibility instructs to use Partners branding Buttons:
Our partner's customers may not always be aware that RingCentral is the service powering the solution they use everyday. They may only know their service by the name our partner's give their product, for example "AT&T Office@Hand." For this reason, we recommend developers make specific reference to each of the services a customer may wish to connect to.
The following images have been provided to help you construct buttons to initiate the login flow with RingCentral and all of its partners.
Has anyone used those partner buttons. If yes please provide link to a working example of the buttons. I want to see how they are used and how they work.
Also where can I download those buttons?