# SMS message Class type

**URL:** <https://forum.sierrawireless.com/t/sms-message-class-type/5685>\
**Category:** Open AT\
**Created:** [June 26, 2012, 1:14pm UTC](https://forum.sierrawireless.com/t/sms-message-class-type/5685 "2012-06-26T13:14:03Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![bhallett](https://avatars.discourse-cdn.com/v4/letter/b/ed8c4c/32.png) [@bhallett](https://forum.sierrawireless.com/u/bhallett)\
**Post date:** [June 26, 2012, 1:14pm UTC](https://forum.sierrawireless.com/t/sms-message-class-type/5685/1 "2012-06-26T13:14:03Z")

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Hello all,

Can anyone tell me if t is possible to interpret a received SMS message class? We have subscribed to the SMS service using the adl\_smsSubscribe function.

The reason for asking this question is because we believe that we may be receiving an SMS of a particular class which causes the device to go into a repetitive reset state indefinitely.

We are using OS firmware 7.2 with a Orange European roaming SIM.

Regards

Barry

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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:** [June 26, 2012, 5:47pm UTC](https://forum.sierrawireless.com/t/sms-message-class-type/5685/2 "2012-06-26T17:47:32Z")

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I think you would have to subscribe in PDU mode, and then “manually” unpick the format… ❓