TRUSTED WORLDWIDE

Reliable voice infrastructure built for businesses

Sinch’s Voice Infrastructure gives you unbeatable reliability, global scale, and cost savings for enterprise-grade communications. That’s why it’s trusted by leading brands worldwide.

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Join over 150,000 businesses, including 8 of the 10 largest tech companies in the world

THE SINCH DIFFERENCE

One network. Every voice touchpoint. 

Sinch’s Voice Infrastructure is built on a Tier-1, geo-redundant network, giving you end-to-end control, predictable costs, and a single platform for APIs, SIP trunking, and numbers, so you don’t have to deal with the hassle of having multiple vendors.

Enterprise-grade quality 

Tier-1 network ownership delivers 99.95% uptime and crystal-clear audio for every call, anywhere in the world.

Elastic global scale

Grow from one call to millions and reach customers in 70+ countries with flexible, pay-as-you-go pricing.

Lower total cost

Simplify your setup, get rid of over-provisioning, and reduce overall costs with a single platform.

Geo-redundant architecture

Stay connected with distributed, cloud-native design built for maximum reliability.

Unified Voice API & portal

Easily manage numbers, SIP trunks, and control call flows from a single interface.

Built-in security & compliance

TLS/SRTP encryption, STIR/SHAKEN, E911, and ISO 27001 compliance built in.

REAL-WORLD USE CASES

Made for the busiest voice workloads

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Scalable reliability

Handle fluctuating call volumes with reliable enterprise-grade Elastic SIP Trunking that grows with you.
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Embedding secure communications

Add private, in-app voice calling to telehealth, gig economy, and social platforms on the same network that powers PSTN traffic.
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Modernizing legacy telecom

Connect your existing PBX systems to the cloud for flexible routing and cost savings—no big hardware upgrades required.
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Building omnichannel experiences

Bring Voice API, SMS, and numbers together to create unified, multi-channel customer journeys on a single platform.

Voice infrastructure FAQs

Voice infrastructure is the foundational network and platform that powers all enterprise voice communications. It delivers reliable, high-quality, and scalable calling at scale for businesses.

Sinch owns and operates its own Tier-1 network, giving us direct control over call routing, quality, and cost—unlike providers who rely on third-party networks.

A global network of points of presence (POPs) and direct carrier interconnects optimize routing for low latency and high audio quality, wherever your users are.

Sinch’s unified voice infrastructure is the shared foundation for Voice API, Elastic SIP Trunking, in-app calling, and numbers, so every connection benefits from the same reliable core.

We use our geo-redundant architecture and proactive network monitoring to deliver a 99.95% uptime SLA.

The platform is ISO 27001 certified, supports STIR/SHAKEN, E911, Kari’s Law, and RAY BAUM’s Act, and encrypts traffic with TLS/SRTP.

Sinch’s network processes over 300 billion minutes annually and supports millions of concurrent channels to give you virtually limitless capacity.

Yes, Sinch’s unified platform allows you to manage APIs, SIP trunking, numbers, and analytics from a single interface, simplifying and streamlining operations.

Talk to an expert about modernizing your voice infrastructure

Learn how Sinch’s Tier-1 network delivers 99.95% uptime, global scale, and lower costs.