SingTel
Corporate Switched Telecommunications Network (CSTN)

Corporate Switched Telecommunications Network (CSTN) is a global virtual network voice solution that lets you stay in touch with your offices and business associates around the world. It gives you the benefits of a global communications platform, as well as unparalleled flexibility and convenience.



A truly multinational business will require a truly global communications platform. A single point of contact, comprehensive network planning and design, project installation, fault management support, services mangement and billing options are just some of the key benefits offered by SingTel CSTN to a global business.

Global Coverage
  • Excellent coverage over major global countries, including key financial hubs like UK, USA, Japan and Hong Kong.
  • Wide regional reach within the Asia-Pacific.
Value Added Services
  • Gain access to a range of flexible and easily customisable corporate dial plans.
  • Access useful features such as Mobile Access or Call Completion.
Value for Money/Discount Plan
  • Enjoy all the benefits of a private network globally without the hassles of additional capital expenditure.
  • Discount plans that allow your company to benefit from additional savings are also offered.
Convenience and Efficiency
  • Connect your offices worldwide with your own private numbering plan.
  • Retain the numbers from your existing private network.
Service Quality
  • Enjoy surpassed standards of quality and dependability.
  • Gain a greater peace of mind with excellent reliability, superior voice quality, world-class network management and guaranteed network security.
Flexible Billing
  • Choose a hassle free and convenient way of tracking your traffic with a customised billing plan that suits your requirements.
  • Receive detailed call reports either in hardcopy or by downloading a softcopy from the Internet.
Multiple Modes of Access
  • Different access modes (onnet, offnet, virtual onnet, forced onnet)
Customer Service
  • One-stop, end-to-end managed solutions free you from the complexities of network management.
  • All provisioning, commissioning and maintenance issues, technical support is available via a single point of contact that is only a call away.
  • Prompt service from experts familiar with the local market via our in-country office service support.
  • A fault-reporting centre provides you with the network assistance 24 hours, 7 days a week.
Number Portability
  • Line registration onto the network for another service provider's range of phone numbers.
  • Combine the convenience of number portability with the assurance of SingTel's quality of service for corporate telecommunications.



SingTel i-PhoneNet
Business Telephone Line
SingTel PhoneNet
Corporate Switched Telecommunications Network (CSTN)
International Toll-Free Service (ITFS)
1800 Local Toll Free