| Subject | English | Portuguese |
| comp., MS, Braz. | globally routable user agent URI | URI de operador usuário de encaminhamento global (A URI that a SIP program can use to route a call to a specific agent) |
| IT | User Agent Layer | camada de agente de utilizador |
| commun., IT | user agent status report | relato de estado de agente de utilizador |
| comp., MS, Braz. | user agent string | cadeia de caracteres de agente de usuário (A string that identifies a user's web browser and provides details about the user's computer system to web servers hosting the websites that the user visits) |
| comp., MS | user agent string | cadeia de user agent (A string that identifies a user's web browser and provides details about the user's computer system to web servers hosting the websites that the user visits) |
| IT | user agent sub-layer | subcamada de agente de utilizador |