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<@1145576664366055464> what does press_digit do in the functions

Thanks for tagging me <@1361773912341483520>. I'll look through relevant sources and get back to you shortly.

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To learn more, see the sources I considered:

[[1] Press digit (IVR navigation)](https://docs.retellai.com/build/single-multi-prompt/press-digit)
[[2] How Can AI Navigate IVRs for Faster Customer Support? | Retell AI](https://www.retellai.com/blog/how-can-ai-navigate-ivrs)
​

### Answer
 

The **Press Digit** function enables your Retell AI agent to send DTMF (Dual-Tone Multi-Frequency) tones—the signals generated when pressing digits on a phone keypad—to navigate IVR (Interactive Voice Response) systems during outbound calls. [(1) ](<https://docs.retellai.com/build/single-multi-prompt/press-digit>)

**When it's useful:**
- When your agent encounters an IVR that requires keypad input (e.g., "Press 1 for Sales, Press 2 for Support") . 
- For navigating to specific departments, entering order numbers, or providing other numeric inputs. [(2) ](<https://www.retellai.com/blog/how-can-ai-navigate-ivrs>)

**How to use it:**
1. Add the **Press Digit Tool** to your agent's functions. [(1) ](<https://docs.retellai.com/build/single-multi-prompt/press-digit>)
2. Add prompts guiding the agent on when and what digits to press, such as:
```
You are going to call to a business and they may have IVR setup.
Listen carefully to their setup and press the right digit to navigate 
the IVR to reach the support department.
```


Or if you know the digit in advance:
```
Press digit 1 to reach the support department.
```


**Note:** This functionality only works with **Call API v2**.

Feel free to tag <@1145576664366055464> with additional questions. I also appreciate feedback, it helps me improve.