# MC7304 prevent data usage **URL:** \ **Category:** MC/EM Series\ **Created:** [February 4, 2019, 3:09pm UTC](https://forum.sierrawireless.com/t/mc7304-prevent-data-usage/15260 "2019-02-04T15:09:38Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![arma](https://avatars.discourse-cdn.com/v4/letter/a/f04885/32.png) [@arma](https://forum.sierrawireless.com/u/arma)\ **Post date:** [February 4, 2019, 3:09pm UTC](https://forum.sierrawireless.com/t/mc7304-prevent-data-usage/15260/1 "2019-02-04T15:09:39Z")
Hello, the modem MC7304(edited) uses mobile data. To the background, we are using the modem on a debian with smstools to send SMS. This works fine. There is only one interface listed, eth0 for ethernet. But there the sim card seems to use mobile data and produces costs. The sim card is an m2m sim card. Is this a known issue? Best Regards ArmMa ---
**Author:** ![anon56110884](https://avatars.discourse-cdn.com/v4/letter/a/ecb155/32.png) [@anon56110884](https://forum.sierrawireless.com/u/anon56110884)\ **Post date:** [February 4, 2019, 9:57pm UTC](https://forum.sierrawireless.com/t/mc7304-prevent-data-usage/15260/2 "2019-02-04T21:57:54Z")
Check AT+WDSC? and see what +WDSC: 3,x is. If x is not 0, you can set it to 0 and check if you still see the data usage. How much data usage do you see? ---
**Author:** ![arma](https://avatars.discourse-cdn.com/v4/letter/a/f04885/32.png) [@arma](https://forum.sierrawireless.com/u/arma)\ **Post date:** [February 5, 2019, 7:55am UTC](https://forum.sierrawireless.com/t/mc7304-prevent-data-usage/15260/3 "2019-02-05T07:55:35Z")
The data usage is not consistent. Only once or twice a month with a couple of kbytes. I will check the option and will give you a feedback as soon as it is fixed. ---
**Author:** ![arma](https://avatars.discourse-cdn.com/v4/letter/a/f04885/32.png) [@arma](https://forum.sierrawireless.com/u/arma)\ **Post date:** [February 6, 2019, 10:25am UTC](https://forum.sierrawireless.com/t/mc7304-prevent-data-usage/15260/4 "2019-02-06T10:25:25Z")
@anon56110884 I miss read the model of the modem. It is a older one, an MC7304 The at command is not working with it. Do you have any ideas? ---
**Author:** ![anon56110884](https://avatars.discourse-cdn.com/v4/letter/a/ecb155/32.png) [@anon56110884](https://forum.sierrawireless.com/u/anon56110884)\ **Post date:** [February 6, 2019, 10:58pm UTC](https://forum.sierrawireless.com/t/mc7304-prevent-data-usage/15260/5 "2019-02-06T22:58:51Z")
The MC73xx modems do not support the command. The data you’re seeing maybe GPS XTRA downloading assistance data. You can disable it, if enabled. AT!ENTERCND=“your password” AT!GPSXTRADATAENABLE=0 AT!GPSXTRATIMEENABLE=0 AT!RESET AT commands guide is available at [https://source.sierrawireless.com/resources/airprime/software/airprime-em73xx\_mc73xx-at-command-reference/](https://source.sierrawireless.com/resources/airprime/software/airprime-em73xx_mc73xx-at-command-reference/) ---
**Author:** ![arma](https://avatars.discourse-cdn.com/v4/letter/a/f04885/32.png) [@arma](https://forum.sierrawireless.com/u/arma)\ **Post date:** [February 15, 2019, 11:36am UTC](https://forum.sierrawireless.com/t/mc7304-prevent-data-usage/15260/6 "2019-02-15T11:36:46Z")
AT!GPSXTRADATAENABLE? This was already on 0 So I checked for AT!CUSTOM? which gave me this: !CUSTOM: GPIOSARENABLE 0x01 GPSENABLE 0x01 GPSLPM 0x01 NMEAENABLE 0x01 GOBIIMEN 0x01 USBSERIALENABLE 0x02 After AT!CUSTOM=“GPSENABLE”,0 It gave the output GPIOSARENABLE 0x01 GPSLPM 0x01 NMEAENABLE 0x01 GOBIIMEN 0x01 USBSERIALENABLE 0x02 So I guess this was the Problem, or did I changed something else? ---
**Author:** ![anon56110884](https://avatars.discourse-cdn.com/v4/letter/a/ecb155/32.png) [@anon56110884](https://forum.sierrawireless.com/u/anon56110884)\ **Post date:** [February 15, 2019, 5:28pm UTC](https://forum.sierrawireless.com/t/mc7304-prevent-data-usage/15260/7 "2019-02-15T17:28:55Z")
You will have to set XTRA DATA and TIME to 0. Removing GPSENABLE is also fine as you are not using GNSS. ---
**Author:** ![arma](https://avatars.discourse-cdn.com/v4/letter/a/f04885/32.png) [@arma](https://forum.sierrawireless.com/u/arma)\ **Post date:** [September 2, 2019, 1:31pm UTC](https://forum.sierrawireless.com/t/mc7304-prevent-data-usage/15260/8 "2019-09-02T13:31:05Z")
Hello @anon56110884, there was traffic again. I have checked the settings suggested from you: XTRA Data Enabled: 0 XTRA Data Retry Number: 3 XTRA Data Retry Interval: 10 XTRA Data Autodownload Enabled: 0 XTRA Data Autodownload Interval: 24 XTRA Data Validity Time: 168 XTRA Time Info Enabled: 0 XTRA Time Uncertainty Threshold: 12500 XTRA Time Delay Threshold:1000 !CUSTOM: GPIOSARENABLE 0x01 GPSLPM 0x01 NMEAENABLE 0x01 GOBIIMEN 0x01 USBSERIALENABLE 0x02 Xtra Data and Time are Enable=0 and GPS is not enabled. Is there another setting I should check to prevent any data usage? Best Regards, Arma ---
**Author:** ![anon56110884](https://avatars.discourse-cdn.com/v4/letter/a/ecb155/32.png) [@anon56110884](https://forum.sierrawireless.com/u/anon56110884)\ **Post date:** [September 3, 2019, 12:17am UTC](https://forum.sierrawireless.com/t/mc7304-prevent-data-usage/15260/9 "2019-09-03T00:17:25Z")
HI @arma, please reach out to Sierra Wireless support or your distributor to debug further. The way to debug will be to capture DM logs, extract the data packets and identify the extra traffic. Such in depth debugging cannot be done on the forum. Thanks.