User guide

Developers guidelines | AT commands
14 June 2010
Service report (+CR)
When a data connection is being established, the +CR messages are sent to the PC
before the final result code CONNECT. Use AT+CR to enable these messages.
Cellular result codes (+CRING)
The +CRING messages replace the unsolicited result code RING and provide more
information about the type of the incoming call. Use AT+CRC to enable these
messages.
+CMS ERROR: 314 (U)SIM card busy
+CMS ERROR: 315 (U)SIM card wrong
+CMS ERROR: 316 (U)SIM PUK required
+CMS ERROR: 317 (U)SIM PIN2 required
+CMS ERROR: 318 (U)SIM PUK2 required
+CMS ERROR: 320 Memory failure
+CMS ERROR: 321 Invalid memory index
+CMS ERROR: 322 Memory full
+CMS ERROR: 330 SMSC address unknown
+CMS ERROR: 331 No network service
+CMS ERROR: 332 Network timeout
+CMS ERROR: 340 No +CNMA acknowledgement expected
+CMS ERROR: 500 Unknown error
+CMS ERROR: 256...511 Values in range 256...511 are reserved
+CMS ERROR: 512 Manufacturer specific
+CR: ASYNC Asynchronous transparent
+CR: SYNC Synchronous transparent
+CR: REL ASYNC Asynchronous non-transparent
+CR: REL SYNC Synchronous non-transparent
+CRING: ASYNC Asynchronous transparent
+CRING: SYNC Synchronous transparent
+CRING: REL ASYNC Asynchronous non-transparent
+CRING: REL SYNC Synchronous non-transparent
+CRING: FAX Facsimile
+CRING: VOICE Normal voice