# MAC commands on TTN Server

**URL:** <https://www.thethingsnetwork.org/forum/t/mac-commands-on-ttn-server/20118>\
**Category:** v2 Backend\
**Created:** [November 25, 2018, 7:05pm UTC](https://www.thethingsnetwork.org/forum/t/mac-commands-on-ttn-server/20118 "2018-11-25T19:05:27Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![arjanvanb](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/arjanvanb/32/46626_2.png) [@arjanvanb](https://www.thethingsnetwork.org/forum/u/arjanvanb)\
**Post date:** [November 26, 2018, 8:20am UTC](https://www.thethingsnetwork.org/forum/t/mac-commands-on-ttn-server/20118/2 "2018-11-26T08:20:39Z")

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Of course TTN supports MAC commands. Not all of them (yet), but surely the most important ones. And there’s a lot to be found online:

- The [LoRaWAN 1.0.3 specification](https://lora-alliance.org/resource-hub/lorawantm-specification-v103).
- The code [is open source](https://www.thethingsnetwork.org/forum/t/mac-command-devicetimereq-supported/19785/8).
- TTN [supports ADR](https://www.thethingsnetwork.org/docs/lorawan/adr.html), which also uses MAC commands.
- There are [several questions about it on this forum](https://www.thethingsnetwork.org/forum/search?q=mac%20commands).
- There’s even the quite specific [Can I send MAC commands to the node?](https://www.thethingsnetwork.org/forum/t/can-i-send-mac-commands-to-the-node/5397)

For an example on how to decode the MAC commands in the `FOpts` field, see [TTN Node - link check does not work?](https://www.thethingsnetwork.org/forum/t/ttn-node-link-check-does-not-work/19981/18)

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