AN OVERVIEW OF THE IMPLEMENTATION OF TCP/IP PACKET RADIO WIDE AREA NETWORK IN INDONESIA

Onno W. Purbo et.al.
Computer Network Research Group
Inter University Center on Microelectronics
Institute of Technology Bandung
Bandung 40132, Indonesia
FAX 022 214-417
yc1dav@itbgtw.itb.ac.id

Utoro Sastrokusumo
Telecommunication Laboratory
Department of Electrical Engineering
Institute of Technology Bandung
Bandung 40132, Indonesia
FAX: 62-22 250-2260
utoro@radar.ee.itb.ac.id

April 1995

HOME MADE PHYSICAL LAYER

   •	A simple AFSK modem 1200bps - it is currently under mass-production in Indonesia.

   •	Microprocessor based AX.25 Packet Assembly Disassembly (PADS) also known as Terminal Node Controller (TNC).

   •	A 1200bps PSK modem.

   •	FSK and GMSK 9600bps modem.

   •	AX.25 HDLC card for high speed (up to 256Kbps) packet radio systems.

   •	High-speed 64Kbps modems for packet radio network.

   •	Radio and transverter for packet radio systems.

SATELLITE BASED NETWORKING IN INDONESIA

  •	Satellite based 300bps packet radio network via Palapa satellite to integrate at least eleven eastern Indonesian Universities.

  •	International TCP/IP experiment via ETS-V satellite.

  •	Set-up of Low Earth Orbit satellite ground station at ITB.

  •	Initial study to build a low earth orbit satellite.

  •	Initial study to build a satellite router to integrate Local Area Network into satellite network in burst mode.

ITB's Low Earth Orbit Satellite Ground Station

SUMMARY

  •	The implementation of TCP/IP-based packet radio technology to integrate various universities and institutions into the first Indonesia's nation wide InterNet Wide Area Network (WAN) is described.

  •	In February 1995, the estimated total user is 6049 users with 37.0% are at universities, 7.5% in research institutions, 1.7% NGO, 34.7% in government institutes, and 19.1% commercial / industries.

  •	Various efforts include TCP/IP software development, HDLC X.25 card, various modems (PSK, AFSK, GMSK and high speed MSK) are presented.

  •	Satellite based networking effort, including:

	  	Computer Networking experiment via ETS-V satellite.
	  	A simple 300bps packet radio via satellite.
	  	Working with Low Earth Orbit (LEO) satellite.

SCPC based computer network for eleven eastern Indonesia universities

	Satellite router
	  •	64kbps - 2Mbps burst modem
	  •	link layer protocol X.25
	  •	Investigation for TDMA

TCP/IP Computer Networking via ETS-V Satellite
SLIP link is used