# Page Not Found

The URL `faq/what-is-the-sbc` does not exist.

You might be looking for one of these pages:
- [What is the SBC?](https://support.portsip.com/portsip-communications-solution/faq/what-is-the-sbc.md)
- [What is the DID Pool?](https://support.portsip.com/portsip-communications-solution/faq/what-is-the-did-pool.md)
- [What is the Multi-Tenant PBX?](https://support.portsip.com/portsip-communications-solution/faq/what-is-the-multi-tenant-pbx.md)
- [What is the PBX? Features, Benefits](https://support.portsip.com/portsip-communications-solution/faq/what-is-the-pbx-features-benefits.md)
- [The Advantages of PortSIP PBX vs. Other PBXs](https://support.portsip.com/portsip-communications-solution/the-advantages-of-portsip-pbx-vs.-other-pbxs.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/what-is-the-sbc.md`)
- Use `Accept: text/markdown` header for content negotiation