# AT commands via USB

**URL:** <https://forum.sierrawireless.com/t/at-commands-via-usb/6920>\
**Category:** Legacy FX/FXT series\
**Created:** [December 13, 2013, 12:30pm UTC](https://forum.sierrawireless.com/t/at-commands-via-usb/6920 "2013-12-13T12:30:32Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![vicesbur](https://avatars.discourse-cdn.com/v4/letter/v/f05b48/32.png) [@vicesbur](https://forum.sierrawireless.com/u/vicesbur)\
**Post date:** [December 13, 2013, 12:30pm UTC](https://forum.sierrawireless.com/t/at-commands-via-usb/6920/1 "2013-12-13T12:30:32Z")

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Hello,

I have the doubt if it is possible to control a wavecom modem using AT commands via the USB interface. Does anyone know if this is possible?

Thanks!

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**Author:** ![awneil](https://avatars.discourse-cdn.com/v4/letter/a/49beb7/32.png) [@awneil](https://forum.sierrawireless.com/u/awneil)\
**Post date:** [December 13, 2013, 1:59pm UTC](https://forum.sierrawireless.com/t/at-commands-via-usb/6920/2 "2013-12-13T13:59:06Z")

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You just need use the appropriate COM: port:

[blog.antronics.co.uk/2011/09/15/ … indows-xp/](http://blog.antronics.co.uk/2011/09/15/identifying-a-modems-com-port-in-windows-xp/)