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Internet access Technologies in Sri Lanka

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Internet access Technologies in Sri Lanka
Broadband Technologies
ADSL – Uses typical twisted pair cable that come home. Maximum downstream up to 8 Mbps. Divide the voice and data signals on the telephone line into three frequency bands.
Internet Leased Line – Internet leased lines are usually available at speeds of 64k, 128k, 256k, and 512k, T1 or E1).
Optical FiberTechnology which bring fiber step closer to the subscriber. In Sri Lanka vastly use in large organizations. Can go up to speed of up to 1 Gbps
HSPASupports data rates up to 27 Mbit/s in the downlink and 5.8 Mbit/s in the uplink. In Sri Lanka do not provide unlimited packagers.
Wi-MaxCan go for over a much greater range.  Point-to-multi point: last-mile internet access.  People can go up to 52Mbps. Good solution for the people who can’t get ADSL connection due to long distance.
LMDS – LMDS offers a microwave solution with a reduced cost per link. It transmits in a point to multi-point fashion over a wide coverage area.  LMDS channel is capable of 45 Mbps downstream.
CDMA – Can achieve maximum capacity of 2Mbps. Popular as wireless internet access technology in Sri Lanka.
Wi-Fi – Based on the IEEE 802.11x standard and transmitting in unlicensed spectrum at 2.4 GHz. support data rates up to 54 Mbps.
Narrow Technologies
Dial-up – Uses the facilities of the public switched telephone network (PSTN). Use same frequency voice band of 0- 4 kHz. Few years ago very popular, but only can have 56 kbps.
ISDN – Much faster speed of 256 kbits/s. But not considered as broadband. Not popular because had to use separate equipments.
WAP – Most use of WAP involves accessing the mobile web from a mobile phone. People can’t go much capacity through this wireless mobile technology.
GPRS – Can achieve maximum speeds of up to 9.6 kbps. This is mobile wireless technology.  Mainly used   for web browsing.
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Internet access Technologies in Sri Lanka | Gunawan | 4.5