proposed standard (PS)
A Proposed Standard(PS) is a proposal for standardization.
For Internet standards, the Proposed Standardization phase has a minimum duration of 6 months and a maximum of 24 months, and requires at least two independent implementations.
A Proposed Standard is given by an Internet Engineering Task Force( IETF) working group, while the Internet Engineering Steering Group( IESG) decides whether a Request for Comments( RFC) reaches the Draft Standard stage.