https://app.knowbase.one/vault/rfc/docid/3612
RFC3239: Internet Printing Protocol (IPP): Requirements for Job, Printer, and Device Administrative Operations
Network Working Group C. Kugler Request for Comments: 3239 H. Lewis Category: Informational IBM Corporation T. Hastings ...
https://app.knowbase.one/vault/rfc/docid/4400
RFC3998: Internet Printing Protocol (IPP): Job and Printer Administrative Operations
Network Working Group C. Kugler Request for Comments: 3998 H. Lewis Category: Standards Track IBM Corporation T. Hastings, Ed. ...