> For the complete documentation index, see [llms.txt](https://docs.pascom.net/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.pascom.net/en/setup/pascom-trunk/number-setup.md). # Setup PASCOM Phone Numbers Use this guide to learn how to add and configure PASCOM ONE phone numbers to your PASCOM cloud phone system. ### How to configure PASCOM phone numbers The PASCOM ONE phone system comes with a PASCOM SIP trunk already configured, so you do not need to worry about the setup. You can find the PASCOM trunk on the admin interface under **Trunks** > **Trunks**. #### How to adjust the PASCOM SIP trunk incoming call rules By default, all incoming calls are routed to one and the same internal extension number, regardless of which of your PASCOM phone numbers the call comes in on.
PASCOM cloud default incoming call rule
You can customise how you receive calls via your PASCOM ONE phone system SIP trunk according to your requirements as shown below. A single number routed to an internal extension:
callrule for single numbers
For number blocks (Direct Inward Dials), it is possible to route the entire extension range to the exact same internal extensions with the help of variables.
callrule for call number block
However, if your number block phone number extensions do not match your internatl extensions, you can route individual numbers independently into the PASCOM telephone system. At this point, please refer to [call rules](/en/setup/pascom-trunk/rules.md) guide for more options regarding how to route calls to your phone numbers into the PASCOM cloud phone system. --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## 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 following URL with the `ask` and `goal` query parameters: ``` GET https://docs.pascom.net/en/setup/pascom-trunk/number-setup.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is what the user is ultimately trying to achieve, the reason they need the answer. Sharing it helps GitBook give you a better, more relevant answer. A goal is most helpful when it describes the outcome the user wants rather than restating the question. For example, with `ask=how do I create an API token`, a goal like `build a script that syncs our docs to a CMS` lets GitBook tailor the answer to that use case. 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.