TISC(TKC Internet Service Center)

The Cloud Service Site that Offers "Safety, Security and Convenience"
TKC Internet Service Center

TKC operates the TKC Internet Service Center (TISC) to provide cloud services to our customers including accounting firms and their clients, local governments and medium- and large-sized companies. TISC makes sure that the cloud services are used under a safe and secure ICT environment so that customers can maintain and continue their business operations in the event of a crisis.
To offer stable cloud-based services, the Data Center is housed in a robust building with private power generators (that can operate for 72 hours) to resist disasters, and inside it features a cloud service platform supported by the latest IT equipment. Another major feature is that it implements all possible measures to ensure the operation, having TKC’s full-time employees monitoring the operational status of the services 24 hours a day, 365 days a year. In addition, we strive to protect the data entrusted to us by our customers through continuous enhancement of countermeasures against cyber attacks, obtaining of certifications under information security standards including the ISO 27001, 27017, and 27018, and strict training of employees.
From this Data Center, TKC will continue to provide safe, secure and convenient cloud services in order to support the business operations of customers.



We obtain certifications under ISO and other standards to enable customers to make objective judgments when entrusting their businesses.

ISO/IEC 27001:Information Security Management System Certification

ISO/IEC 27017: ISMS cloud security certification

ISO/IEC 27018: Certification for the protection of personally identifiable information in public clouds

ISO/IEC 20000: IT service management systems certification

LGWAN-ASP Service Connection/Registration Qualification Test

The TKC Data Centers have passed the LGWAN-ASP Service Connection/Registration Qualifi cation Tests by the Japan Agency for Local Authority Information Systems.

  • Facility services (passed on October 20, 2003)
  • Hosting services (passed on November 28, 2003)
  • Applications & contents services (passed on November 28, 2003)

Authorized service provider of the Local Tax Agency

ISAE 3402 Audit (former No. 86 Audit): Assessment of internal controls over services entrusted

TKC receives the Assurance Reports on Controls at a Service Organization (reports under ISAE 3402, former Report No. 86) based on the Auditing and Assurance Practice Committee Practical Guideline No. 3402 issued by the Japanese Institute of Certified Public Accountants for the internal controls over the following services offered at the TKC Data Centers:

  • Electronic tax filing system for corporations (ASP1000R)
  • Consolidated tax payment system (eConsoliTax)
  • Consolidated accounting system (eCA-DRIVER)
  • Tax effect accounting system (eTaxEffect)
  • Integrated accounting information system (FX5)
  • ntegrated accounting information system (FX4 Cloud)
  • Electronic tax filing system (e-TAX consumption tax)
  • Fixed assets management system (FAManager)

Overview of TISC

1. Server room floor area 3,412m2 (approximately 1,034-tsubo)
2. Countermeasures against earthquakes seismic isolation (can continue use even if hit by an intensity level 7 earthquake)
3. Floor load 816kg/m2
4. Power receiving system 6.6kV high voltage double circuit power receiving system
5. Redundant electrical system redundant to power distribution board (redundancy inside racks is optional); no blackout during inspections
6. Emergency back-up power generator gas turbine generator
7. Fuel stockpile for generator stockpile of fuel to run 72 hours
8. UPS 10 minutes or greater
9. Grounding system adopts IEC-compliant SPG (surge protective device) and equipotential bonding grounding system
10. HVAC air cooling package
11. Temperature & humidity controls 24ºC±2ºC, 50% ±10%
12. Fire detection system ultra-sensitive smoke detection sensors
13. System operation & monitoring 24-hour, 365-day manned monitoring
14. Fire extinguisher system NN100 (inert gas [nitrogen gas] extinguisher; no ozone-depleting potential nor global warming potential)
15. Access control door access control by IC cards throughout the building (access to server room is controlled by biometric authentication)
16. Surveillance cameras installed on the building exterior circumference and inside the building
17. Communication line multi-carrier compatible
18. Zinc whisker prevention completely whisker-free server room
19. Environmental consideration Use of fresh air, hot aisle chamber system, etc.
System Monitoring Room 1
Patrol monitoring 2
Security 3
Operation Department 4
Countermeasures against earthquakes 5
Lightning protection 6
  1. System Monitoring Room
    Full-time employees offer manned monitoring around the clock.
  2. Patrol monitoring
    Employees patrol the entire building on a regular basis and check the building status as well as the operational status of each and every machine.
  3. Security
    All doors throughout the building require an IC card to be opened. In particular, access to the server room is controlled by a palm vein authentication system, a type of biometric authentication solution. The conditions inside and outside the Center are monitored centrally at the disaster prevention center.
  4. Dedicated cloud technicians
    Dedicated cloud technicians design and build the cloud service infrastructure based on the latest virtualization technology to support the stable operation of cloud services at all times.
  5. Countermeasures against earthquakes
    Twenty-four seismic isolators made of multilayered hard rubber and steel plates support the TISC building. These isolators will absorb seismic energy of up to intensity level 7 and prevent the servers in the building from falling down and breaking.
  6. Lightning protection
    In addition to the external lightning protection (building protection) required under JIS, the building is equipped with protection measures to support the internal lightning protection system defined by the International Electrotechnical Commission (IEC) so that the electronic devices installed inside the building will not be affected by lightning.