Hi MacK3,

This is still in draft and ready to be published. (stage 60 as of yesterday)
The most recent version I know of is the ITU-T X.1051 (07/2004)
this has just been withdrawn from the ITU site but you might get it with cached pages. Alternatively contact me off line and I can send a copy of the pdf to you directly, or, wait a few weeks !!! and it should become available.