Internet OFFLINE: Overview Teknologi Secara Umum

Initial development has been started by the author. Since, the invest cost is very low, everything is self-financially performed. Moreover, the results are freely released online and, thus, the Indonesian may immediately received the benefit from the technology.

In general, there are three (3) functions of Internet Offline System that must be considered, and developed, namely.

   1. Content controller, accumulator, as well as distributor to schools.
   2. Offline Internet infrastructure at schools
   3. Users mostly students / teachers who access the content via smartphones / computers.

In content controller and accumulator section, some of the tasks are as follows

   • Determine which content / web need to retrieved based on the school's curriculum.
   • Content will be limited to the size of microsd. The average affordable microsd has around 8-16 Gbyte space, which be used for a  lot of text content. But not much lots of video content.
   • Content should be adjusted to the school's curriculum. This is a bit difficult as content for grade 1 will definitely be different from other class. Hence, more research is needed to do in depth content analysis.
   • Content should be adjusted to the teaching methods. As far as I know, there is no standard on the teaching method when using online materials. This requires teacher creativity in maximizing the benefits of existing content. Not many education faculties provide practical method to maximize online teaching material in the learning process.
   • Technologically, the process of copying material to make it available offline is relatively simple, even the Wikipedia community has provided kiwix for these purposes.

In the operation of Internet Offline facilities at schools, some of the tasks are as follows

   • The research carried out is focused on preparing the server using embedded system, such as raspberrypi or orangepi.
   • The technical aspects are written in more detailed in the wiki http://onnocenter.or.id/wiki/index.php/Internet_offline [9]
   • In general, Raspberrypi Server is prepared as a stand alone server with Web Server facilities, DHCP Server, File Sharing Server, DNS Server so that it can function as an Offline Internet
   • The BIND DNS Server is set according to the machine domain that is copied to redirect traffic not to the Internet but to the local server.
   • Apache Web Server is set to be a virtual hosting server that is capable of receiving HTTP and HTTPS traffic.
   • Kiwix is used to display copy of Indonesian wikipedia and wikitionary copies. Users may access it via the Web.

Students / teachers accessing the content via smartphone / computer may have several notes, such as,

   • Smartphones, tablets, laptops may be used to access available teaching materials. We only need to provide additional WiFi Access Points and LAN cables. A single WiFi Access Point will only effective for a maximum of  ten (10) simultanoues devices. To be able to be simultaneously accessed by the whole school, many WiFi access points with many channels that are different from each other (orthogonal channel) are needed
   • The biggest problem is the electric power to keep smartphones, tablets and laptops running for a long time.