Test your customers’ call experience.

Proactively test and monitor critical aspects of any line, from any device, almost anywhere in the world, from the comfort of your desk.

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Supporting 80% of the Gartner UCaaS Magic Quadrant
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Typical 67% increase in performance
within 3 months
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Overall, 76% reduction in
call failures by year 1
Global fixed-line and mobile carriers in our network


Easily identify call quality issues

Test & monitor phone lines, so you can take action before your customers notice.


Address call quality with confidence

Get objective real-time data, supporting immediate action from service providers.


Troubleshoot and fix issues faster

Detailed reports support quick fixes, so your teams can achieve more in a day.


You’re in good company​

Meet some of our (very) happy customers​

I now see objective voice quality PESQ scores on every number we test - visibility I didn't have before we started Spearline.

Arnie Chencinski, Senior Voice Network Engineer

Spearline gave us better visibility on the quality of our service, and allowed us to detect and solve issues much faster. It contributed to improving call quality and customer satisfaction.

Pierre-Baptiste Béchu, Tech Co-Founder

Spearline offers a quicker detection of issues and faster turnaround times that require less human resources.

Alain Rodriguez, Technical Support Lead

The platform has been exceptional in our ability to drive carrier improvements, customer fault investigations and alerting of any country issues.

Gregor Rennie , EMEA Carrier Account Manager

Business Case Studies

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