> For the complete documentation index, see [llms.txt](https://help.stringeex.com/stringeex-tong-dai-cham-soc-and-quan-ly-khach-hang/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.stringeex.com/stringeex-tong-dai-cham-soc-and-quan-ly-khach-hang/en/i.-introduction.md).

# I. Introduction

- [1. Register a new account](https://help.stringeex.com/stringeex-tong-dai-cham-soc-and-quan-ly-khach-hang/en/i.-introduction/1.-register-a-new-account.md)
- [2. Log in - Log out](https://help.stringeex.com/stringeex-tong-dai-cham-soc-and-quan-ly-khach-hang/en/i.-introduction/2.-log-in-log-out.md)
- [3. Change user information](https://help.stringeex.com/stringeex-tong-dai-cham-soc-and-quan-ly-khach-hang/en/i.-introduction/3.-change-user-information.md)
- [4. Making outbound calls](https://help.stringeex.com/stringeex-tong-dai-cham-soc-and-quan-ly-khach-hang/en/i.-introduction/4.-making-outbound-calls.md)
- [5. Receive inbound calls](https://help.stringeex.com/stringeex-tong-dai-cham-soc-and-quan-ly-khach-hang/en/i.-introduction/5.-receive-inbound-calls.md)
- [6. Actions in the call](https://help.stringeex.com/stringeex-tong-dai-cham-soc-and-quan-ly-khach-hang/en/i.-introduction/6.-actions-in-the-call.md)
- [7. Account Status](https://help.stringeex.com/stringeex-tong-dai-cham-soc-and-quan-ly-khach-hang/en/i.-introduction/7.-account-status.md)