# Page Not Found

The URL `portsip-pbx/faq/portsip-sdk-license-agreement` does not exist.

You might be looking for one of these pages:
- [PortSIP SDK License Agreement](https://support.portsip.com/portsip-communications-solution/faq/portsip-sdk-license-agreement.md)
- [PortSIP Software End-User License Agreement](https://support.portsip.com/portsip-communications-solution/faq/portsip-software-end-user-license-agreement.md)
- [Is the PortSIP PBX built on Asterisk, FreeSwitch?](https://support.portsip.com/portsip-communications-solution/faq/is-the-portsip-pbx-built-on-asterisk-freeswitch.md)
- [What is the PBX? Features, Benefits](https://support.portsip.com/portsip-communications-solution/faq/what-is-the-pbx-features-benefits.md)
- [SIP Status Code of Response](https://support.portsip.com/portsip-communications-solution/faq/sip-status-code-of-response.md)

## How to find the correct page

1. **Browse the full index**: [/sitemap.md](https://support.portsip.com/sitemap.md) - Complete documentation index
2. **View the full content**: [/llms-full.txt](https://support.portsip.com/llms-full.txt) - Full content export

## Tips for requesting documentation

- For markdown responses, append `.md` to URLs (e.g., `/portsip-communications-solution/faq/portsip-sdk-license-agreement.md`)
- Use `Accept: text/markdown` header for content negotiation