# Send SMS and CMS ERROR 305 **URL:** \ **Category:** Legacy FX/FXT series\ **Created:** [September 30, 2009, 8:34am UTC](https://forum.sierrawireless.com/t/send-sms-and-cms-error-305/3688 "2009-09-30T08:34:48Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![jln](https://avatars.discourse-cdn.com/v4/letter/j/8c91f0/32.png) [@jln](https://forum.sierrawireless.com/u/jln)\ **Post date:** [September 30, 2009, 8:34am UTC](https://forum.sierrawireless.com/t/send-sms-and-cms-error-305/3688/1 "2009-09-30T08:34:48Z")
Dear all I’m trying to send SMS with a terminal connected to the Fastrack supreme 10 but always get the CMS ERROR 305 “Invalid text mode parameter”. I tried to change the text mode prameter, but no way. Here are some traces of the AT commands I send (bold) and responses of the modem at+cnmi? +CNMI: 0,1,0,0,0 OK at+csmp? +CSMP: 17,169,0,0 OK at+cmgf=1 OK at+csca? +CSCA: “+41794999000”,145 OK at+cmgw=“+41797943078” > hello > +CMGW: 1 > OK > at+cmgs=1 > +CMS ERROR: 305 at+cmgl=“ALL” +CMGL: 1,“STO UNSENT”,“+41797943078”, hello OK Can anyone help me? Thanks jln ---
**Author:** ![phamduong537](https://avatars.discourse-cdn.com/v4/letter/p/13edae/32.png) [@phamduong537](https://forum.sierrawireless.com/u/phamduong537)\ **Post date:** [September 30, 2009, 9:12am UTC](https://forum.sierrawireless.com/t/send-sms-and-cms-error-305/3688/2 "2009-09-30T09:12:24Z")
you try with: AT+CMGF=1// choose text mode AT+CMGS= //without “” ---
**Author:** ![jln](https://avatars.discourse-cdn.com/v4/letter/j/8c91f0/32.png) [@jln](https://forum.sierrawireless.com/u/jln)\ **Post date:** [September 30, 2009, 12:14pm UTC](https://forum.sierrawireless.com/t/send-sms-and-cms-error-305/3688/3 "2009-09-30T12:14:48Z")
Thanks for the reply Yes, I tried, but same behaviour! Something strange, if If use the command +CMGS to send the SMS directly, I get an other error code (+CMS ERROR: 513) at+cmgf=1 OK at+cmgw=+41774464444 > test > +CMGW: 1 > OK > at+cmgs=1 > +CMS ERROR: 305 > at+cmgl=“ALL” > +CMGL: 1,“STO UNSENT”,“+41774464444”, > test > OK > at+cmgs=+41774464444 > hello > +CMS ERROR: 513 ---
**Author:** ![awneil](https://avatars.discourse-cdn.com/v4/letter/a/49beb7/32.png) [@awneil](https://forum.sierrawireless.com/u/awneil)\ **Post date:** [September 30, 2009, 1:10pm UTC](https://forum.sierrawireless.com/t/send-sms-and-cms-error-305/3688/4 "2009-09-30T13:10:23Z")
> [@jln](#): > > I get an other error code (+CMS ERROR: 513) And what does that one mean? ---
**Author:** ![jln](https://avatars.discourse-cdn.com/v4/letter/j/8c91f0/32.png) [@jln](https://forum.sierrawireless.com/u/jln)\ **Post date:** [October 1, 2009, 7:46am UTC](https://forum.sierrawireless.com/t/send-sms-and-cms-error-305/3688/5 "2009-10-01T07:46:07Z")
CMS ERROR 513 means ‘lower layer failure’. I found some explanation about it but, one ot them is the MS loses the radio link. But I can start a grps connection with the modem. And if I put the SIM card in a modemSiemens MC35i , with the same AT commands it works poperly… I have no more ideas for the moment 💡❓ ---
**Author:** ![awneil](https://avatars.discourse-cdn.com/v4/letter/a/49beb7/32.png) [@awneil](https://forum.sierrawireless.com/u/awneil)\ **Post date:** [October 1, 2009, 8:01am UTC](https://forum.sierrawireless.com/t/send-sms-and-cms-error-305/3688/6 "2009-10-01T08:01:59Z")
> [@jln](#): > > CMS ERROR 513 means ‘lower layer failure’. This can be an intermittent problem; eg, if there is interference, or a (brief) drop in the signal level… Does it succeed if you re-try? What is the signal strength? Are you in an area of known poor reception? ---
**Author:** ![jln](https://avatars.discourse-cdn.com/v4/letter/j/8c91f0/32.png) [@jln](https://forum.sierrawireless.com/u/jln)\ **Post date:** [October 1, 2009, 11:57am UTC](https://forum.sierrawireless.com/t/send-sms-and-cms-error-305/3688/7 "2009-10-01T11:57:58Z")
I don’t think it is a problem of signal, because I can receive SMS without any problem!