Sinch Launches Voice Relay to Empower AI Agents

New capability connects text-based AI to live phone calls, simplifying voice interactions for enterprises.

Published on Mar. 10, 2026

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Sinch AB, a leading communications platform provider, has announced the launch of Voice Relay, a new capability that enables developers to connect text-based AI agents directly to live phone calls. This innovation aims to help enterprises bring AI-powered conversations to the global telephone network, automating routine calls, reducing wait times, and resolving issues faster without the need to build and manage complex voice infrastructure.

Why it matters

The integration of AI into voice interactions has historically been a complex challenge, requiring the management of audio streaming infrastructure, speech recognition services, text-to-speech systems, and latency optimization. Voice Relay simplifies this process by allowing developers to connect AI agents built on large language models directly to live voice calls, with Sinch handling the underlying complexity of real-time voice interactions.

The details

Voice Relay provides the infrastructure that connects AI agents to Sinch's global voice network, delivering the real-time media, reliability, and control required to run AI-powered voice interactions in production. Enterprises can now leverage the freedom to choose the AI models that power their agents, while Sinch manages the real-time conversational loop during a call, including speech recognition, voice synthesis, and interruption handling.

  • Sinch announced Voice Relay at Enterprise Connect on March 10, 2026.

The players

Sinch AB

A leading communications platform provider that has announced the launch of Voice Relay, a new capability that enables developers to connect text-based AI agents directly to live phone calls.

Julia Fraser

The EVP Americas at Sinch, who stated that Voice Relay allows developers to connect AI agents to the global telephone network quickly and reliably, helping enterprises automate routine calls, reduce wait times, and resolve issues faster.

Daniel Morris

The Chief Product Officer at Sinch, who said that Voice Relay provides the infrastructure that connects AI agents to the global voice network, delivering the real-time media, reliability, and control required to run AI-powered voice interactions in production.

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What they’re saying

“Voice remains one of the most powerful channels for customer engagement, and enterprises are increasingly looking to bring AI into those interactions. Voice Relay allows developers to connect AI agents to the global telephone network quickly and reliably, helping them automate routine calls, reduce wait times and resolve issues faster without having to build and manage complex voice infrastructure themselves.”

— Julia Fraser, EVP Americas at Sinch (PRNewswire)

“Enterprises want the freedom to choose the AI models that power their agents. Voice Relay provides the infrastructure that connects those agents to the global voice network, delivering the real-time media, reliability and control required to run AI-powered voice interactions in production.”

— Daniel Morris, Chief Product Officer at Sinch (PRNewswire)

What’s next

Sinch has announced that Voice Relay is currently in early access release, with plans to make it more widely available to enterprises in the near future.

The takeaway

Sinch's launch of Voice Relay represents a significant step forward in the integration of AI into voice interactions, simplifying the process for enterprises and enabling them to leverage the power of AI to enhance customer engagement and improve operational efficiency.