🌐EnglishEnglishBahasa IndonesiaDeutschEspañolFrançaisItalianoTiếng ViệtРусскийالعربية한국어中文日本語EntityQ779475· pop 15· linked from 266 articlesnetwork switching subsystemAlso known as NSS, GSM core network, signed response, SREScomponent of the Global System for Mobile Communications (GSM)Available in 15 languagesEspañolFrançaisDeutsch中文РусскийItalianoالعربيةBahasa IndonesiaCatalanCzechConnectionsUniversal Mobile Telecommunications SystemEntityHigh Speed Packet AccessEntityCategoriesGSM standardTelecommunications infrastructure