# Configuration of Phone Numbers

- [Configuring SIP to IP Account](https://docs.didforsale.com/sip-trunking/configuration-of-phone-numbers/configuring-sip-to-ip-account.md)
- [Configuring Custom Dial Plan to a Phone Number](https://docs.didforsale.com/sip-trunking/configuration-of-phone-numbers/configuring-custom-dial-plan-to-a-phone-number.md)
- [Configure SIP to SIP Account](https://docs.didforsale.com/sip-trunking/configuration-of-phone-numbers/sip-to-sip-account.md)
- [Set up Call Forwarding to a Phone Number](https://docs.didforsale.com/sip-trunking/configuration-of-phone-numbers/call-forwarding.md)
- [http URL Forwarding Setup](https://docs.didforsale.com/sip-trunking/configuration-of-phone-numbers/http-setup.md)
- [Webhook Setup](https://docs.didforsale.com/sip-trunking/configuration-of-phone-numbers/webhook.md)
- [FAX](https://docs.didforsale.com/sip-trunking/configuration-of-phone-numbers/fax.md): No FAX machine? No worries, Send and receive FAX through EMail!
- [Receive FAX](https://docs.didforsale.com/sip-trunking/configuration-of-phone-numbers/fax/receive-fax.md)
- [Fax through SIP Account](https://docs.didforsale.com/sip-trunking/configuration-of-phone-numbers/fax/fax-through-sip-account.md)
- [Send FAX](https://docs.didforsale.com/sip-trunking/configuration-of-phone-numbers/fax/send-fax.md)


---

# 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.didforsale.com/sip-trunking/configuration-of-phone-numbers.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.
