Multi-Tech Systems GPRS (MTMMC-G) User Manual

Appendix A – Result Codes, Failure Causes, Other Tables 

Multi-Tech Systems, Inc. Wireless GSM/GPRS AT Commands (Document Number S000293I) 

174 

 

<er> is defined as below: 

1 to 127  Error cause values from the GSM 

recommendation 04.11 Annex E-2 

+CMGS, +CMSS 

301 

SMS service of ME reserved 

+CSMS (with +CMS: ERROR 301) 

302 

Operation not allowed 

All SMS commands (+CMSS, +CMGL, +CPMS, +CSMP… 

303 Operation 

not 

supported 

All SMS commands 

304 

Invalid PDU mode parameter 

+CMGS, +CMGW 

305 

Invalid text mode parameter 

+CMGS, +CMGW, +CMSS 

310 

SIM not inserted 

All SMS commands 

311 

SIM PIN required 

All SMS commands 

312 

PH-SIM PIN required 

All SMS commands 

313 

SIM failure 

All SMS commands 

316 

SIM PUK required 

All SMS commands 

317 

SIM PIN2 required 

All SMS commands 

318 

SIM PUK2 required 

All SMS commands 

321 

Invalid memory index 

+CMGR, +CMSS, +CMGD 

322 

SIM memory full 

+CMGW 

330 

SC address unknown 

+CSCA?, +CMSS, +CMGS 

340 

no +CNMA acknowledgement expected 

+CNMA 

500 unknown 

error. 

All 

commands 

512 

MM establishment failure (for SMS). 

+CMGS, +CMSS (+CMS ERROR: 512) 

513 

Lower layer failure (for SMS) 

+CMGS, +CMSS (+CMS ERROR: 513) 

514 

CP error (for SMS). 

+CMGS, +CMSS (+CMS ERROR: 514) 

515 

Please wait, init or command processing in progress. 

All commands ( “+CME ERROR: 515” or 
“+CMS ERROR: 515”) except ATHO, 
ATH1, AT+WOIR, AT+WIOW, 
AT+CFUN=1, AT+CLCC, AT+WAC, 
AT+CPAS, AT+VGR, AT+VTS, 
AT+SPEAKER 

517 

SIM Toolkit facility not supported. 

+STGI 

518 

SIM Toolkit indication not received. 

+STGI 

519 

Reset product to activate or change a new echo cancellation 
algo. 

+ECHO, +VIP 

520 

Automatic abort about get plmn list for an incoming call. 

+COPS=? 

526 

PIN deactivation forbidden with this SIM card. 

+CLCK 

527 

Please wait, RR or MM is busy. Retry your selection later. 

+COPS 

528 

Location update failure. Emergency calls only. 

+COPS 

529 

PLMN selection failure. Emergency calls only. 

+COPS 

531 

SMS not sent: the <da> is not in FDN phonebook, and FDN lock 
is enabled. (for SMS) 

+CMGS, +CMSS (+CMS ERROR: 531) 
 

532 

Embedded application is activated so objects flash are not erased +WOPEN 

533 

Missing or Unknown APN 

ATD*99 +GACT +CGDATA 

536 

Class locked: A command has been launched from a port. The 
effect is to lock all commands belonging to the same class. If 
another port launches a command of this class, this error will 
occur as long as the class is not released (at first command’s 
completion time). 

All commands 

537 

Phonebook group full. 

+CPBW 

538 

Not enough space to copy SMS 

+WMCP 

539 Invalid 

SMS 

+CMGR 

541 

Open AT

® application and AT software version do not match 

+WOPEN 

543 

CMUX connection is refused by remote, after a restart of CMUX 
protocol by the modem, due to a 27.010 connection loss during 
virtual channels establishment.  

+CMUX