# airlink es-440 and sms

**URL:** <https://forum.sierrawireless.com/t/airlink-es-440-and-sms/7736>\
**Category:** AirLink routers\
**Created:** [February 3, 2015, 7:30pm UTC](https://forum.sierrawireless.com/t/airlink-es-440-and-sms/7736 "2015-02-03T19:30:11Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![rwurth](https://avatars.discourse-cdn.com/v4/letter/r/ecb155/32.png) [@rwurth](https://forum.sierrawireless.com/u/rwurth)\
**Post date:** [February 3, 2015, 7:30pm UTC](https://forum.sierrawireless.com/t/airlink-es-440-and-sms/7736/1 "2015-02-03T19:30:11Z")

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Hi all

I have an airlink es-440 modem and I cannot get it to send sms messages via the at command set. It just replies with an error. I can log into the modem and from the web interface I can send a txt message si I know its mot the simm card. Any ideas on if or how to make it use the at+ commands and not the airlink sms commands ie the \* commands

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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:** [February 3, 2015, 8:17pm UTC](https://forum.sierrawireless.com/t/airlink-es-440-and-sms/7736/2 "2015-02-03T20:17:47Z")

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> [@wurthrs](#):
>
> I cannot get it to send sms messages via the at command set.

What, exactly, have you tried ❓

> [@](#):
>
> It just replies with an error.

What error, exactly ❓

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<div class="post-metadata">

**Author:** ![rwurth](https://avatars.discourse-cdn.com/v4/letter/r/ecb155/32.png) [@rwurth](https://forum.sierrawireless.com/u/rwurth)\
**Post date:** [February 6, 2015, 5:43pm UTC](https://forum.sierrawireless.com/t/airlink-es-440-and-sms/7736/3 "2015-02-06T17:43:04Z")

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whenever I do this command from the terminal from the USB or the serial port I get this response

AT+CPAS

ERROR

When I do this command I get a OK reply but the message is never sent  
AT_SMSM2M=“12345678900 THIS IS A TEST”  
AT_SMSM2M=“1234567890 THIS IS A TEST”

When I use this command I get a reply that something is not found

AT\*\<\<\<1234567890,ASCII,12,54657374206d657373616765\>\>\>  
AT\*\<\<\<12345678900,ASCII,12,54657374206d657373616765\>\>\>

The command sequence that the software I am using, uses these commands and I either get just an error or a command not supported error

AT  
AT+CPAS  
AT+CPAS  
ATE0  
AT&D0  
ATV1  
AT+CMEE=1  
AT+CREG=0  
AT+CREG?  
AT+CHUP=?

AT+CSMS?  
AT+CMGF=0  
AT+CNMI=2,1,0,0,0

AT+CLIP=0  
AT+CPMS=“SM”,“SM”  
AT+CPMS=“SM”  
AT+CNMI=2,1,0,0,0

All of the standard AT commands ie atz, ate0, atv1 all return with OK. Have any ideas?