The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of
telecommunications. The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of
ITU. ITU-T is responsible for studying technica
ITU-T I.381-2001 history
2001ITU-T I.381-2001 ATM Adaptation Layer (ALL) performance Study Group 13