EntityQ1139465· pop 22· linked from 399 articlesSignalling System No. 7Sign in to saveset of telephony signaling protocolsConnectionsmulti-factor authenticationEntitysignalingEntityTelephone User PartEntityUnited KingdomCountryInternetEntityInternational Standard Book NumberEntityThe GuardianEntitydigital object identifierEntityInternational Standard Serial NumberEntityThe Washington PostEntityGoogle PlayEntitySMSEntityInternet ProtocolEntityInternational Telecommunication UnionEntityOSI modelEntityopen-source softwareEntityTrojan horseEntityAmerican National Standards InstituteEntityIntegrated Services Digital NetworkEntityUnited States Department of Homeland SecurityEntityCategoriesComputer-related introductions in 1984ITU-T recommendationsNetwork protocolsSignaling System 7TelephonyTelephony signals