# UART1 settings via USB

**URL:** <https://forum.sierrawireless.com/t/uart1-settings-via-usb/3580>\
**Category:** Legacy FX/FXT series\
**Created:** [August 25, 2009, 2:50pm UTC](https://forum.sierrawireless.com/t/uart1-settings-via-usb/3580 "2009-08-25T14:50:02Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![mike\_rink](https://avatars.discourse-cdn.com/v4/letter/m/cab0a1/32.png) [@mike\_rink](https://forum.sierrawireless.com/u/mike_rink)\
**Post date:** [August 25, 2009, 2:50pm UTC](https://forum.sierrawireless.com/t/uart1-settings-via-usb/3580/1 "2009-08-25T14:50:02Z")

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Hi,

In need to set the baud rate (AT+IPR) and parity etc. (AT+IFC and AT+ICF) of UART1 of a Wavecom Q2686 whilst connected to the USB port.

When I tried it, it did not work. Although the command received a positive response, the actual UART1 baud rate etc. did not change. The AT documentation indicates that these cannot be set using the USB port.

Does anyone know of a way to achieve this? Maybe some Open AT function?

Thanks.

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**Author:** ![fer.caballero](https://avatars.discourse-cdn.com/v4/letter/f/ba9def/32.png) [@fer.caballero](https://forum.sierrawireless.com/u/fer.caballero)\
**Post date:** [August 26, 2009, 6:24am UTC](https://forum.sierrawireless.com/t/uart1-settings-via-usb/3580/2 "2009-08-26T06:24:48Z")

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The problem is that AT+IFC and the rest of UART configuring commands must be sent on the specific UART to be configured.  
You can build your own AT command, for example AT+UA1IFC. The handler that catch it can resend it to the UART1.

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**Author:** ![mike\_rink](https://avatars.discourse-cdn.com/v4/letter/m/cab0a1/32.png) [@mike\_rink](https://forum.sierrawireless.com/u/mike_rink)\
**Post date:** [August 27, 2009, 8:18pm UTC](https://forum.sierrawireless.com/t/uart1-settings-via-usb/3580/3 "2009-08-27T20:18:56Z")

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Thanks. I will look into that solution.

Regards,  
Mike