OKSIO

The All-Republic Comprehensive System for Information and Warning (Общереспубликанская комплексная система информации и оповещения), commonly known by its acronym, ОКСИО (OKSIO) is the national warning system of Arvor, designed to allow authorised officials to broadcast alerts, warning messages and other important information to the citizenry in the event of a national emergency, natural disaster, or other potentially disastrous situation. The system is co-ordinated under the law "On the Maintenance of Public Alert and Warning Systems" and is maintained through the Main Communications Directorate of the Ministry of Defence.

Messages on OKSIO are composed of four parts: a digitally encoded Specific Area Message Encoding (Кодирование сообщений конкретной области, KSKO) header, a three-second attention signal, an audio announcement, and a digitally encoded end-of-message marker. The KSKO header is the most critical part of the design. It contains information about who originated the alert (the People's Government, oblast authorities, or Gosmeteor), a short description of the event with any relevant instructions or cautions, the areas affected, the expected duration of the event, the date and time it was issued, and an identification of the originating station. In the event of a National Alert (Национальная тревога), the KSKO header will not specify any particular area, but will identify itself as such in the opening header.

The National Emergency Message (Национальное экстренное сообщение, NES) is the notice to broadcasters that the president or their designee will deliver a message over OKSIO. The government has stated that the system would allow the president to speak during a national emergency within 10 minutes.

There are 96 radio stations designated as primary stations in OKSIO to distribute messages to broadcast stations. These broadcasters are the method through which OKSIO announcements are transmitted throughout their operating areas. OKSIO tests are conducted monthly and identify themselves as such in the KSKO header and end-of-message marker.