Internet access Technologies in Sri Lanka

 

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 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 52 Mbps. 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.