> For the complete documentation index, see [llms.txt](https://zmink.gitbook.io/node-tcrouter/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://zmink.gitbook.io/node-tcrouter/setup/enable-sms.md).

# Enable SMS

Configuration of the SMS feature of the TC Router

In order to send or receive text messages via the node-tcrouter package, all desired contacts must be added to the TC Router's "Phonebook."

The Phonebook is found in "I/O" -> "Phonebook."  After adding in your list of contacts, click the apply button.  These contacts can now be reached by the node-tcrouter package.

![TC Router Phonebook](https://275177444-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LpVTD7zKVzd9_wIeHyu%2F-LpzvNeLmi-B4Qz4ptAS%2F-LpzvollfjjZoYiJyS0r%2Fimage.png?alt=media\&token=4759ce0d-1904-43f2-9dc3-2a8da8a42220)