The world's leading voice enablement platform

SIPPIO is the easiest and fastest way for carriers and resellers to bring PSTN calling into Microsoft Teams and Zoom.

About Us

Organizations across the globe rely on SIPPIO to keep their people connected.

Since launching in 2019, SIPPIO has been at the forefront of cloud telephony, building a robust global network across 10+ data regions that enable true PSTN calling directly within Microsoft Teams and Zoom.

Working exclusively through the channel, SIPPIO gives resellers, carriers, and operators the ability to enhance their offering and augment their services in new markets and territories; alongside a powerful partner toolkit to manage quoting, sales, migrations, and activations.

With SIPPIO, over 2.2 billion people in 74 countries can access full PSTN calling services inside Microsoft Teams and Zoom, complete with the feature-rich and enterprise-level functionality that eliminates the need for expensive and complex infrastructure.

With flexible subscription plans, SIPPIO deploys in minutes and ensures a reliable, secure, compliant, and redundant voice solution.


SIPPIO is led by a dynamic team of experts with decades of experience in telecoms and IT, who share a unified vision for the future of voice calling.

Adam Cole


Dawn-Marie Elder

COO and General Manager

David Spindler

SVP Operations and Digital