Internet access Technologies in Sri Lanka
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 Fiber – Technology 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
HSPA – Supports 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-Max– Can 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.
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.
Internet access Technologies in Sri Lanka | |