KT Japan Network Service
Next-Generation Network Infrastructure
We provide a variety of solutions tailored to customer needs, including Japan-Korea international circuits, Japan local services, international broadcasting services, and live streaming services.
Japan-Korea Premium Line
The highest quality Japan-Korea direct dedicated circuits utilizing KT's submarine cables (KJCN, APG, TPE, etc.), optimized for financial institutions and mission-critical data communication.
Low Latency: 16.5ms
Tokyo–Busan (via KJCN submarine cable)
Route Redundancy
• 3 cable routes (KJCN, APG, TPE)
• Selectable based on customer requirements
* Unprotected / Protected services
Wideband Communication
• Bandwidth: 2Mbps–10Gbps
• Options: LANPHY, WANPHY, OTN
* Flexible bandwidth upgrades via software (POTN & PTN)
Submarine Cable Network
Achieving global connectivity through 9 submarine cables connecting Asia-Pacific to North America.
Subsea Cable Capacity & Pricing
Current capacity and monthly recurring charges on our main subsea routes. Updated every two weeks.
Last updated:
| Route | Cable | Demarcation Points | Available B/W (G) | PRICE (MRC) / 100G | RTD (ms) CLS to CLS | RFS |
|---|---|---|---|---|---|---|
| HK-SG | SJC2 | Mega-I ~ SG3 | 200 | mail Email us | 38.0 | |
| JP-US | Unity | Chikura CLS ~ Coresite LA1 | 700 | 95.5 | ||
| JP-US | JUNO | NTT Shin-Maruyama ~ Coresite LA2 | 200 | 100.0 | AVAILABLE/READY | |
| SG-KR-US | APG+NCP | SG3 ~ Busan(XC) ~ US Data Center | 400 | around 180 | AVAILABLE/READY | |
| SG-KR-US | APG+NCP | SG3 ~ Busan(XC) ~ US Data Center | 400 | around 180 | ||
| SG-MRS | AAE-1 | SG(SG3) ~ MAL ~ THA(E) ~ EGY ~ FR(MRS1) | 100 | 137.0 | ||
| SG-JP | APG | SG Changi APG CLS ~ JP Shima APG CLS | 400 | TBU | AVAILABLE/READY |
Cable Name & Route Details
| Cable Name | Route |
|---|---|
| KJCN | KR — JP |
| SJC2 | HK — SG, SG — JP |
| UNITY | JP — US |
| ADC | SG — JP |
| JUNO | JP — US |
| FASTER | JP — US |
| APG | KR — JP, KR — CN, KR — HK, KR — SG |
| NCP | KR — CN, KR — TW, KR — US, JP — US, CN — JP |
| TPE | KR — JP, KR — CN, KR — TW, KR — US |
Korea Paid Peering Service
We provide a high-quality peering service connecting KT's large-capacity Korean internet backbone with the Japan-Korea fastest network KJCN.
Korea Internet Data Services
We provide optimal data circuit services tailored to your needs, using KT's Korean domestic internet backbone.
Leased Line
Leased Line
A dedicated line service connecting customer premises end-to-end. Using dedicated transmission equipment, we guarantee the highest quality line stability and bandwidth.
- check_circle End-to-End Dedicated Circuit
- check_circle Highest Line Stability
- check_circle Bandwidth Guaranteed
Internet
DIA
A corporate internet service using KT's enterprise internet backbone 'Kornet.' Supporting bandwidth from 10M to 10G, connecting enterprises via dedicated lines.
- check_circle 10M to 10G Support
- check_circle Enterprise Dedicated Line Connection
- check_circle Outstanding Cost Performance
GiGA office
GiGA office
An internet service using corporate cable lines. While applying Kornet's enterprise-grade quality management, we offer cost-effective and reasonable plans.
- check_circle Enterprise Quality Management
- check_circle Reasonable Pricing
- check_circle Cable Line Connectivity
International Broadcasting Service
We provide high-quality video transmission services using KT's submarine cables and satellites.
Within Korea, leveraging KT's nationwide fiber network, video can be transmitted to Japan from anywhere. In partnership with domestic Japanese partners, our services are used by Japanese broadcasters and various content providers.
Dedicated International Broadcasting
We build a dedicated Japan-Korea broadcasting network to deliver high-quality live video transmission services.
- check_circle Stable transmission quality via international leased lines (redundant routes)
- check_circle Content protection through closed network architecture
- check_circle Transmission from various locations/formats (dedicated, satellite, internet)
- check_circle Proven track record supporting top K-POP events: MAMA, Golden Disk Award, BTS concerts, and more
- check_circle Permanently connected to major Korean broadcasters
Live Streaming Broadcasting
We build dedicated live streaming lines to deliver high-quality live video transmission services.
- check_circle Transmission via dedicated or multiple lines
- check_circle Available at concert venues nationwide
- check_circle Proven track record including HYBE-hosted concerts and many other events
- check_circle From site survey to line removal, KT Japan provides end-to-end support
Get a custom network assessment
Contact our technical sales team for custom infrastructure assessments and dedicated line quotes.
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