Voice Gateway Nodes - Cognigy Documentation

Voice Gateway Nodes Help

Voice Gateway Nodes help you build a voice AI Agent using Voice Gateway configuration.

Nodes

• Call Recording: The Call Recording Node starts or stops a conversation recording.
• DTMF: The DTMF Node plays DTMF digits to the caller.
• Hang Up: The Hang Up Node instructs Voice Gateway to end the call.
• Mute Speech Input: The Mute Speech Input Node controls when speech and DTMF user inputs are collected in your Flow.
• Play: The Play Node lets you stream a sound file into the call, also in a loop. The Node supports encoded MP3 and WAV files.
• Send Metadata: The Send Metadata Node sends metadata via SIP INFO messages to the connected SIP trunk.
• Set Session Config: The Set Session Config Node configures the Voice Gateway session. This configuration applies for the rest of the session unless overwritten, either directly or by activity parameters.
• Transfer: The Transfer Node lets you transfer an ongoing call to a Tel or SIP target.

Footnotes

1. This Node can be configured with Parameter Details. ↩

Last modified on April 21, 2026.