Home›Browse›Service data unit🌐EnglishEnglishDeutschEspañolFrançaisPortuguêsTürkçe中文EntityQ1758093· pop 9· linked from 16 articlesService data unitSign in to savedata passed down to a lower layer of the OSI model, yet to be encapsulatedAvailable in 9 languagesEspañolFrançaisDeutsch中文PortuguêsCzechGujaratiTürkçevia Wikidata sitelinks · CC0