1. 10G Network Configuration For APII Korea-Japan International Link Aug 23, 2005 KEPCO Group

2. Today’s Agenda  Current Network Configuration for APII Korea- Japan International Link  10Gbps Network Configuration for APII Korea- Japan International Link - Option 1: Wavelength Leasing (STM-64, Two Routes) - Option 2: Provisioned Circuit (10GbE) - Comparison of Option 1&2  Current Network Configuration for APII Korea- Japan International Link  10Gbps Network Configuration for APII Korea- Japan International Link - Option 1: Wavelength Leasing (STM-64, Two Routes) - Option 2: Provisioned Circuit (10GbE) - Comparison of Option 1&2

3. Busan LS Current Network Configuration for APII Korea- Japan International Link SLTE Kitakyushu LS SLTE Fukuoka LS SLTE ADM KT Busan ITMC GbE Converter KOREN Busan QTNet NWC ADM GbE Converter KJCN STM64 STM16 GbE×2 Note SLTE: Submarine Line Terminal Equipment, DWDM ADM: Add Drop Multiplexer : POS Interface Provided by KT Provided by QTNet Japan Q’siDC CPE

4. Busan LS 10Gbps Network Configuration for APII Korea- Japan International Link Option 1: Wavelength Leasing (STM64, 2 Routes) SLTE Kitakyushu LS SLTE Fukuoka LS SLTE KT Busan ITMC KOREN Busan QTNet NWC REG Japan Q’siDC KJCN STM64 Note SLTE: Submarine Line Terminal Equipment, DWDM REG: 10Gbps Regenerator *REGs would be required depending on the distance between SLTE and CPE. : POS/WAN PHY Interface Provided by KT Provided by QTNet REG STM64 REG STM64 CPE

5. Busan LS 10Gbps Network Configuration for APII Korea- Japan International Link Option 2: Provisioned Circuit (10GbE) SLTE Kitakyushu LS SLTE Fukuoka LS SLTE KT Busan ITMC KOREN Busan QTNet NWC REG Japan Q’siDC KJCN STM64 Note SLTE: Submarine Line Terminal Equipment, DWDM REG: 10Gbps Regenerator *REGs would be required depending on the distance between SLTE and CPE. : POS/WAN PHY Interface Provided by KT Provided by QTNet REG STM64 REG STM64 10GbE SW 10GbE STM64 10GbE SW 10GbE CPE

6. 10Gbps Network Configuration for APII Korea- Japan International Link Comparison of Option 1&2 Option 1: STM64 Wavelength Leasing Option 2: 10GbE Provisioned Circuit Leasing FeeLow-pricedHigh-priced W&P FunctionProvided by CustomersProvided by KT/QTNet POS FunctionProvided by CustomersProvided by KT/QTNet Data Speed Maximum 20Gbps, if customers use link aggregation function Maximum 10Gbps LatencyLowerSlower OthersPurely dedicated circuit for APII

7. Thank You For Your Attention