"RFC 2778: A Model for Presence and Instant Messaging"@en . "2778" . . "17"^^ . . . "2000-02-01T00:00:00Z"^^ . "request for comments publication"@en . "RFC 2778: A Model for Presence and Instant Messaging"@en . . "journals/rfc/rfc2778" . . . . . . "A Model for Presence and Instant Messaging"@en . . . "\u043F\u0443\u0431\u043B\u0456\u043A\u0430\u0446\u0456\u044F \u0437\u0430\u043F\u0438\u0442\u0443 \u043A\u043E\u043C\u0435\u043D\u0442\u0430\u0440\u0456\u0432"@uk . "RFC 2778: A Model for Presence and Instant Messaging"@en . "H. Sugano" . . . . . "10.17487/RFC2778" . . . . . "RFC2778"@en . . . . "M. Day" . . . . . . "A Model for Presence and Instant Messaging"@en .