Tekelec's Transport Adapter Layer Interface. - David Michael Sprague; Robby Benedyk; Dan Brendes; Joe Keller (RFC, 2001)

Signalling Connection Control Part User Adaptation Layer (SUA). - John Loughney; Greg Sidebottom; Lode Coene; Gery Verwimp; Joe Keller; Brian Bidulock (RFC, 2004)