Roadmap
Changelog

February 5th, 2025

What's New in Synthflow: Telnyx and 3CX, Consent Toggle, 20+ Languages, Stronger Voice Engine 2.0, Hire an Expert, Flow Designer, & More

We’re super excited to bring you major updates that’ll massively improve your workflows in Synthflow and beyond! 

Don’t get left out…these are the changes that we’ve made in this release 👇

  • Enterprise: Updated SIP URI, Telnyx and 3CX Integration

  • Interface Improvements including new Custom Actions UI and more

  • Consent Toggle and API for Recording and Transcription

  • 20+ New Languages including Swedish, Hindi, and German

  • Bigger, Better, Faster, Stronger Voice Engine 2.0

  • Hire an Expert: Form to Connect with Solution Partners for Same-Day Support

  • PAYG Top-Up System

  • Account Management: Cal.com for Subaccounts

  • Flow Designer Closed Beta — Request Access Now!

  • Trigger Batch Campaigns with Workflows

Scroll down to not be left behind on our changes…

Enterprise: Updated SIP URI, Telnyx and 3CX Integration

We’ve updated the SIP URI to sip:sipin.synthflow.ai:32681. If you’re using SIP trunking with Synthflow, update your configuration to maintain uninterrupted service.

We now support Telnyx and 3CX as a new SIP trunking integration, alongside Twilio and Vonage, making it easier to connect your preferred voice provider. SIP trunking allows enterprise customers to migrate existing phone numbers, integrate with their telephony provider, and scale communication with elastic SIP. Configure your trunk, point it to the new URI, and import your numbers into Synthflow for reliable, scalable connectivity.

Support for RingCentral is coming next week.

Contact our sales team to enable this feature.

New UI for Templates and Custom Actions, Quick Access to Action IDs, Improved Search

We’ve rolled out several updates to make your experience more intuitive and efficient:

  • Assistant Templates UI: The interface has been completely revamped as part of the new Synthflow Marketplace, aligning with the latest design standards to enhance usability and deliver a seamless experience. Submit your templates until the end of February to be considered for the Marketplace Launch Contest.

  • Custom Actions UI: When creating a new custom action, you now have access to Marketplace Action Templates and a step-by-step Action Setup UI to simplify the process.

  • Assistant Filters Now Available: Users can filter their assistants on the main page by assistant type, template status, voice engine version (1.0 or 2.0), and phone number for easier management.

  • Improved Search & Filtering: The Actions interface now supports better search and filtering functionality.

  • Quick Access to Action IDs: Copy Action IDs directly from the 3-dots menu.

  • Improved Error Emails: Notifications about errors now include more detail.

These updates are designed to give you more control, streamline navigation, and enhance overall usability.

Consent Toggle and API for Recording and Transcription

Users can now enable or disable consent settings for recordings and transcriptions for agents using Voice Engine 1.0 in the Configure Tab of the assistant. If the recording consent is enabled, the Agent will evaluate if the user gave the consent or not to record the call. If the user consent is given, the Agent will automatically start recording the call.

This feature is also available via our agents API:

• consent_recording (boolean) – Enable or disable recording consent.

• consent_text (string) – Custom message for the consent request.

These fields are supported in POST and PUT requests when updating an agent.

For more details on implementing this via API, refer to the SynthFlow API documentation.

20 + Languages

We now support transcription and voice synthesis for over 20 new languages, including Swedish, Hindi, and German, letting your words flow in more places than ever. These voices are in beta—perfect for most uses but requiring extra validation for structured inputs like phone numbers.

Bigger, Better, Faster, Stronger Voice Engine 2.0

We are excited to announce significant updates to Voice Engine 2.0, enhancing reliability, scalability, and performance:

1. Enhanced Scalability: Voice Engine 2.0 supports larger-scale deployments effortlessly.
2. Improved Latency: Faster response times, especially in dynamic, interruptive conversations.
3. Reduced Crosstalk: Significant mitigation of overlapping or delayed agent responses during user interruptions.
4. Expanded SIP Trunking: Integrate with Telnyx and 3CX.
5. RAG: Voice Engine 2.0 supports Knowledge Bases.

We’ve changed how phone numbers are managed:

  • Voice Engine 2.0 assistants only use 2.0 numbers.

  • Voice Engine 1.0 assistants only use 1.0 numbers.

  • New agents default to Voice Engine 1.0 and imported Twilio numbers default to 1.0.

Additionally, we’ve made adjustments to ensure everything runs smoothly:

  • Advanced warm transfer features are only available in Voice Engine 1.0, but standard transfers remain fully functional.

  • Resolved double-call behavior by disabling the “Call Me” button during active test calls.

  • Fixed issues causing agents to repeat or stop speaking unexpectedly.

  • Improved handling of simultaneous call events to avoid errors.

  • Team Assistants now support multiple languages.

  • Fixed syncing issues with HubSpot during outbound calls.

  • Resolved problems with deleting unverified caller IDs.

  • Enterprise: Inbound Assistants can process custom variables in prompts.

Hire an Expert: Connect with Solution Partners for Same-Day Support

Need expert help? You can now request direct assistance through the “Hire an Expert” form in the Assistant View or here. Fill out the request, and one of our battle-tested Solution Partners will provide same-day support, helping you troubleshoot, optimize workflows, and get the most out of Synthflow.

Synthflow provides pricing guidelines to give you an understanding of the scope of services offered. However, final pricing is determined through direct negotiation between you and your selected Solution Partner, ensuring flexibility based on your specific needs.

PAYG Top-Up System

PAYG top-up system: We have introduced a top-up system for Pay-As-You-Go users.

Account Management: Cal.com for Subaccounts

Managing accounts and integrations just got easier with these new updates designed to streamline your workflow and boost efficiency.

  • Cal.com Integration: Subaccounts can now schedule tasks and manage Cal.com connections seamlessly.

  • Smarter Subaccount Tracking: Fixed discrepancies in subaccount counts for accurate reporting.

  • Navigation Updates: Streamlined access to subaccounts from Agency > Permissions.

API: Get & List Subaccounts, Widget, Knowledge Base

New API updates provide better data access and automation:

• Get & List Subaccounts: View usage data and activity details for individual or all subaccounts.

• Widget API & Webhook Support: Extract info from widgets programmatically for improved workflow automation.

• Knowledge Base: Manage knowledge bases via endpoints for creation, retrieval, and updates.

Flow Designer Closed Beta

Our next-generation conversational path tool is here—take full control of your AI-driven conversations. Request access via the form to join the closed beta.

  • Visually Map Dialogues: Drag, drop, and connect steps intuitively.

  • Custom API Integration: Trigger workflows or pull data from third-party services.

  • Native Actions: Add transfers, bookings, or notifications with a click.

  • Context-Aware Precision: Build smarter branches and keep conversations predictable.

  • Fast Iteration: Test, tweak, and optimize flows in real time.

Get ready to design conversational paths with ease. Request access through this form!

Workflow Builder 2.0 and Batch Calling Deprecation

Batch calling has been retired and replaced by a fully automated experience in Workflow Builder.

New Workflow Templates: Explore an upgraded library of batch workflow templates, powered by the next-gen Workflow Builder for greater efficiency and flexibility.

4 new automation steps for workflows:

  • Make a phone call to trigger the phone call.

  • Make a SIP Trunk call if you did bring your own voice provider.

  • Initiate a phone call and receive call data within 5 minutes, making it ideal for streamlining form qualification processes.

  • Receive a call and access the call data immediately afterward.

We really hope you enjoy these updates! As always, leave us feedback.

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