2509
The IN concepts , architecture and protocols were originally developed as standards by the ITU-T which is the standardization committee of the International Telecommunication Union ; prior to this a number of telecommunications providers had proprietary implementations .
 organization: ITU-T; organization: International Telecommunication Union
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 organization: ITU-T; organization: International Telecommunication Union