Home›ITU-T recommendations›Optical Transport Network🌐EnglishEnglishDeutschEspañolItalianoPortuguêsTürkçeРусскийفارسی日本語EntityQ51831· pop 10· linked from 107 articlesOptical Transport NetworkAlso known as OTNtype of communications network using optical fiber links, defined by ITU-T Recommendation G.709Available in 10 languagesEspañolDeutschРусскийPortuguêsItalianoAzerbaijaniFinnishTürkçeفارسیvia Wikidata sitelinks · CC0Connectionssynchronous optical networkingEntitywireless communicationEntityCategoriesITU-T recommendationsOptical Transport Network