What is portal USDT?

Could you elaborate on what exactly is meant by "portal USDT"? Is it a specific platform, service, or feature related to the USDT stablecoin? Are there any distinguishing characteristics that set it apart from other methods of accessing or interacting with USDT? What advantages or disadvantages might it offer for those interested in utilizing stablecoins? Additionally, how widely accessible is this "portal USDT" and what are the requirements for using it? Clarifying these points would help potential users understand the concept and its potential applications in the cryptocurrency and finance space.