In this Recommendation the term recognized operating agency (ROA) includes any individual, company,
corporation or govemrnental organization that operates a public correspondence service. The terms
Administration, ROA and public correspondence are defme
ITU-T G.708-1999 history
1999ITU-T G.708-1999 Sub STM-0 Network Node Interface for The Synchronous Digital Hierarchy (SDH) Study Group 15; 22 pp