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Thursday, February 26, 2004
Korea Telecom chief calls for more fiber in access network
"South Korea's experience with broadband access since 1998 indicates how fiber can play a critical role in access systems, said Yong-Kyung Lee, president and chief executive of Korea Telecom Corp., in a keynote speech opening the Optical Fiber Communication conference here. While the original Korean leap in universal broadband relied on Digital Subscriber Line services, Lee said that next-generation services cannot be supported without further fiber deployment moving toward the end user. 'The current Internet is only suitable for best-effort, store-and-forward applications,' Lee said."
"Much better support for Quality of Service and security parameters must be integrated into backbone control planes, Lee said. Each household should receive 100-Mbit/sec service in order to carry HDTV as well as broadband data traffic. South Korea leads the world in broadband penetration, with 73 percent of the population connected to the Internet via broadband access, with some 60 percent DSL-based."
"KT will begin the conversion to fiber by using a fiber-to-the-curb architecture with very high bit-rate DSL, Lee said, moving to an Ethernet-based fiber-to-the-home network late in this decade. The FTTC topology uses a flexible cell structure similar to cellular network topologies, with the size of each cell dependent on demand density in a particular neighborhood. KT also is conducting trials with Passive Optical Networks as a low-cost alternative to pushing out fiber in the network, while deploying service to homes without a traditional broadband modem. The PON trials involve both wave-division multiplexed PONs and time-division multiple-access PONs."