This Recommendation describes the principles, procedures and protocols to be followed on organizing and operating a computerized international directory assistance service.
ITU-T E.115-2010 Referenced Document
ITU-T E.115 Computerized directory assistance (Study Group 17)
ITU-T E.115-2010 history
2010ITU-T E.115-2010 Computerized directory assistance (Study Group 17)
2008ITU-T E.115-2008 Computerized directory assistance Study Group 17