> For the complete documentation index, see [llms.txt](https://docs.didforsale.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.didforsale.com/overview/introduction-1.md).

# Introduction

DIDForSales is leading Provider for local and toll free numbers. You can build custom Voice and SMS application on top of our platform. Or you can interconnect your Business phone system with our SIP Trunk gateways.