# Basics

## Your account is provisioned with default AI Agent ready to pick up calls

{% embed url="<https://youtu.be/vHSEgSA6gaE>" %}

## AI Agent

{% embed url="<https://youtu.be/87HpEY80TZY>" %}

## Audio codecs

{% embed url="<https://youtu.be/7CI6SVtM_xg>" %}

## SIP registration

{% embed url="<https://www.youtube.com/watch?v=7Pk_OuusWWg>" %}
When you want receive calls and make your phone ringing you need to register to VoIP Number from your device/software via SIP. See how to [Register IP desk phone](/guides/register-ip-desk-phone.md) and how to [Register a Softphone (SIP phone)](/guides/register-a-softphone-sip-phone.md)
{% endembed %}

## Numbers

{% embed url="<https://www.youtube.com/watch?v=7v2R4o2amUg>" %}
With a telephone [Number](/components/number.md) you can make and receive calls to/from public telephony
{% endembed %}

## Call Flow

{% embed url="<https://www.youtube.com/watch?v=7CtkCQMEkz4>" %}
[Call Flow](/components/call-flow.md) defines a call execution. It may serve your AI Agent, send to voicemail, etc.
{% endembed %}

Continue exploring [VoIP Number](https://docs.voipnumber.net/) at [innovative telephony with AI Agents and appointment bookings](/getting-started/innovative-telephony-with-ai-agents-and-appointment-bookings.md)&#x20;


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# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.voipnumber.net/videos/basics.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.