Agent: "Press 1 for sales, 2 for support, or 3 for billing."
Caller: *presses 2*
Agent: "Connecting you with support. How can I help?"

IVR: "Press 1 for English, 2 for Spanish."
Agent: *sends DTMF 1*
IVR: "Enter your account number followed by pound."
Agent: *sends DTMF 1234567890#*

curl -X PATCH https://api.thinnest.ai/agents/agent_abc123 \
  -H "Authorization: Bearer $THINNESTAI_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "voice_tools": {
      "dtmf": {
        "enabled": true,
        "receive": true,
        "send": true,
        "digit_timeout_seconds": 3,
        "finish_key": "#"
      }
    }
  }'

When collecting an account number, ask the caller to enter it using their
keypad followed by the pound key. Wait for the DTMF input before proceeding.

For outbound calls to businesses with IVR menus, navigate the menu by
sending the appropriate keypress. For example, press 1 for English,
then enter the extension number.

Agent: "Please enter your 6-digit account number, followed by the pound key."
Caller: *presses 1-2-3-4-5-6-#*
Agent: "Got it. Your account number is 123456. Let me look that up."