Voiceflow Telephony (Beta)

We're excited to announce the beta release of Voiceflow Telephony, bringing enterprise-grade voice capabilities to your conversational experiences. This release represents a significant milestone in our mission to provide comprehensive, low-latency voice solutions for businesses of all sizes.

Native Twilio Integration

We've integrated with Twilio to make phone-based interactions as simple as possible. The new integration allows you to:

• Import existing Twilio phone numbers directly into Voiceflow
• Associate phone numbers with specific agents
• Configure separate numbers for development and production environments
• Test different versions of your agent against different phone numbers

Setting up telephony is straightforward: simply connect your Twilio account with existing phone numbers, import them into Voiceflow, and assign them to your agents. Your voice experience will be live within minutes.

High-Performance Voice

Streaming Technology

We've built our telephony feature on top of our streaming API, delivering exceptional performance improvements:

• Dramatically reduced response times
• Near real-time agent reactions
• Optimized voice processing pipeline

Speech Recognition

We've selected Deepgram to provide industry-leading Automatic Speech Recognition (ASR):

• High-accuracy transcription
• Low-latency processing
• Support for over 20 languages

Advanced Voice Capabilities

Outbound Calling

We've introduced powerful outbound calling capabilities:

• Programmatically initiate calls to any phone number
• Test outbound calls directly from the Voiceflow interface
• Integrate outbound calling into your existing workflows

Voice Technology Stack

Our comprehensive voice stack includes:

• Premium text-to-speech voices from industry leaders, such as:
  • ElevenLabs
  • Rime
  • Google
• Support for advanced telephony features through custom actions:
  • Call forwarding
  • DTMF handling
  • Interruption behaviour

Voice Experience Configuration

We've exposed detailed configuration options to fine-tune your voice experiences:

Audio Settings

• Background audio customization
• Audio cue configuration

Interaction Parameters

• Interruption threshold controls
• Utterance end detection
• Response timing optimization
• User input acceptance timing

Beta Program Details

Access and Limitations

During the beta period, all users will have access to telephony features with the following concurrent call limits:

Coming Soon

• Enhanced call analytics and reporting
• Additional voice customization options