Could not receive auto respond SMS

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New member
Username: Mocha

Post Number: 4
Registered: 07-2010
Posted on Wednesday, December 29, 2010 - 12:30 pm:   

I am having this error code in SMSOUT.LOG-->2010-12-29 20:53:10,4D049AC4.req,,*014****660,Retry Pending - ERROR - Modem Response (2): +CMS ERROR: 21 -- Sony Ericsson Device 0016 USB WMC Modem,Sender=01*2**7***

Before this i use different sim card and it function well.But after I change to another sim card means different service provider,i receive the above error.How can I fix the error?
Des - NowSMS Support
Board Administrator
Username: Desosms

Post Number: 2791
Registered: 08-2008
Posted on Wednesday, December 29, 2010 - 07:15 pm:   

According to the CMS error code list at, this indicates that the provider is purposely rejecting the message.

If this happens with all messages, then perhaps the SIM card is out of credits, or SMS capabilities have not been enabled for the SIM. (Try putting the SIM card into a phone and see if it can send SMS messages.)

I've also seen where some modems default to expecting to support SMS over GPRS, while some operators do not have this support enabled. So you can try setting "SMS Access" to "GSM" in NowSMS (under properties of the modem in the "SMSC" list) and see if this makes a difference.

NowSMS Support

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