# Page Not Found

The URL `portsip-pbx/portsip-pbx-administration-guide/certificates-for-tls-https-webrtc/update-certificates` does not exist. This page may have been moved, renamed, or deleted.

## Suggested Pages

You may be looking for one of the following:
- [Update Certificates](https://support.portsip.com/portsip-communications-solution/tutorials/certificates-for-tls-https-webrtc/update-certificates.md)
- [Preparing TLS Certificates](https://support.portsip.com/portsip-communications-solution/tutorials/certificates-for-tls-https-webrtc/preparing-tls-certificates.md)
- [Using a Free Let’s Encrypt Certificate](https://support.portsip.com/portsip-communications-solution/tutorials/certificates-for-tls-https-webrtc/using-a-free-lets-encrypt-certificate.md)
- [Upgrade to the Latest v11.x Release](https://support.portsip.com/portsip-communications-solution/portsip-pbx-administration-guide/9-configuring-portsip-sbc/upgrade-to-the-latest-sbc-release.md)
- [Configure System Email Notifications](https://support.portsip.com/portsip-communications-solution/portsip-pbx-administration-guide/31-configuring-email-notifications/configure-system-email-notifications.md)

## How to find the correct page

If the exact page cannot be found, you can still retrieve the information using the documentation query interface.

### Option 1 — Ask a question (recommended)

Perform an HTTP GET request on the documentation index with the `ask` parameter:

```
GET https://support.portsip.com/portsip-communications-solution/tutorials/certificates-for-tls-https-webrtc/update-certificates.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.

### Option 2 — Browse the documentation index

Full index: https://support.portsip.com/sitemap.md

Use this to discover valid page paths or navigate the documentation structure.

### Option 3 — Retrieve the full documentation corpus

Full export: https://support.portsip.com/llms-full.txt

Use this to access all content at once and perform your own parsing or retrieval. It will be more expensive.

## Tips for requesting documentation

Prefer `.md` URLs for structured content, append `.md` to URLs (e.g., `/portsip-communications-solution/tutorials/certificates-for-tls-https-webrtc/update-certificates.md`).

You may also use `Accept: text/markdown` header for content negotiation.