# Decoding the messages on the DM port (/dev/ttyUSB0)

**URL:** https://forum.sierrawireless.com/t/decoding-the-messages-on-the-dm-port-dev-ttyusb0/22174
**Category:** IoT Modules
**Created:** [November 20, 2020, 1:03am UTC](https://forum.sierrawireless.com/t/decoding-the-messages-on-the-dm-port-dev-ttyusb0/22174 "2020-11-20T01:03:26Z")
**Posts on this page:** 5
**Page:** 1

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### Author: ![akn](https://avatars.discourse-cdn.com/v4/letter/a/f17d59/32.png) [@akn](https://forum.sierrawireless.com/u/akn)
#### Post date: [November 20, 2020, 1:03am UTC](https://forum.sierrawireless.com/t/decoding-the-messages-on-the-dm-port-dev-ttyusb0/22174/1 "2020-11-20T01:03:26Z")

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How do I decode the messages generated on the DM port (/dev/ttyUSB0)?

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### Author: ![jyijyi](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/jyijyi/32/4766_2.png) [@jyijyi](https://forum.sierrawireless.com/u/jyijyi)
#### Post date: [November 20, 2020, 1:17am UTC](https://forum.sierrawireless.com/t/decoding-the-messages-on-the-dm-port-dev-ttyusb0/22174/2 "2020-11-20T01:17:06Z")

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You need to have qualcomm qxdm professional

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### Author: ![akn](https://avatars.discourse-cdn.com/v4/letter/a/f17d59/32.png) [@akn](https://forum.sierrawireless.com/u/akn)
#### Post date: [November 20, 2020, 1:23am UTC](https://forum.sierrawireless.com/t/decoding-the-messages-on-the-dm-port-dev-ttyusb0/22174/3 "2020-11-20T01:23:47Z")

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Is there any alternate way?

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### Author: ![jyijyi](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/jyijyi/32/4766_2.png) [@jyijyi](https://forum.sierrawireless.com/u/jyijyi)
#### Post date: [November 20, 2020, 1:39am UTC](https://forum.sierrawireless.com/t/decoding-the-messages-on-the-dm-port-dev-ttyusb0/22174/4 "2020-11-20T01:39:19Z")

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No, I don’t think so.

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### Author: ![aaron](https://avatars.discourse-cdn.com/v4/letter/a/e19adc/32.png) [@aaron](https://forum.sierrawireless.com/u/aaron)
#### Post date: [December 1, 2020, 9:16pm UTC](https://forum.sierrawireless.com/t/decoding-the-messages-on-the-dm-port-dev-ttyusb0/22174/5 "2020-12-01T21:16:45Z")

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There are many open source tools to parse diag messages. Probably the best right now is qcsuper from P1sec which you can find on GitHub.