Korea has been one of the early providers of the broadband Internet services in the world. Over 10 million subscribers use
the internet data service using xDSL and AON. So far, xDSL system is considering the dominant access network
transmission system. But from the 2005, TELCOS are more considering AON system at apartment area. They call
Optical LAN. The brand name is very popular in Korea. KT has been provided Optical LAN service for apartment area.
We call the name of Ntopia. We install L3 switch apartment main distribute frame (MDF) and FES in the each building.
In general this service is target for new apartment area. But the AON system does not proper out of the CO. However,
Passive Optical Network (PON) system has reliability in terms of OPEX comparing with AON. So I will introduce the
Optical LAN using 100M WDM-PON.
We have provided the Internet data service for more than 30 million users over broadband network in Korea. At emerging time of introducing Internet data service, downstream data rate was a critical issue. But nowadays, the key issue is not provided the best effort service but guaranteed bandwidth service. PON system can guarantee the both points. In this paper we present the requirement of EPON system for Fiber to The Pole (FTTP) and Fiber to the Home (FTTH). And then we will show some examples of EPON deployment at KT.