Enhance customer experience, ensure business continuity, and save operational costs

Accomplish more
Boost productivity by combining quality voice and productivity apps in a workspace without the need to switch between Teams and desk phones.
Save cost with a cloud-based solution
Cloud-based service eliminates upfront investment in hardware. You can use Teams as your primary phone system or integrate it with existing PBXs/phones.
Get rid of IT management challenges
Reduce reliance on traditional PBX and on-premises hardware, simplifying IT management.
Simple and flexible administration
Scale up in a matter of minutes as your business grows, without having to interrupt the existing infrastructure.

Save more with SmartSIP for Teams Calling

Free On-Net calls
Enjoy free On-Net calls between clients irrespective of the geographical location
Save on roaming charges
Regardless of where you are, you can make calls to any local Singapore number and pay only local toll charges.
Free incoming calls
When travelling, receive free incoming from Singapore without paying any toll charges or voice roaming service.
Special IDD rates
With SmartSIP for Teams Calling, the IDD rates are adjusted, with an estimated 50% savings on the IDD charges.

StarHub SmartSIP for Teams Calling connects Microsoft Phone System to PSTN.


With Direct Routing, StarHub SmartSIP can connect your PSTN numbers to the Microsoft Phone System in the cloud, allowing users to make/receive PSTN calls from any devices through the Microsoft Teams app. 

StarHub Managed Services can provide seamless integration for PSTN connectivity to connect your phone lines with Microsoft Teams. As well as support even more complex solutions and integrate into your organization’s business workflow.

Find out how StarHub's SmartSIP for Teams Calling can help you create a Workplace of the Future.

SmartSIP for Teams Calling FAQ


Enjoy unified converged, mobile and phone line services across multiple devices for your business.

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SIP Voice

Power your PBX system with a reliable, scalable and cost effective voice delivery connection.

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StarHub Managed Services

Assured and experienced partner to design and manage your digital infrastructure.

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