Chapter 3: AT Commands Reference
June 30, 2008 AT Commands Reference Manual 3 -81
OK
AT+MD SI= ?
+MDSI: (000,001)
OK
AT+MD SI= 1
OK
//Until now there was no deactivation or invalidation of SIM card.
AT+MD SI?
+MDSI: 1
OK
//SIM card does not support GPRS
+MDSI: 2, 7, "GPRS", "GPRS services not allowed"
//Insert a SIM card that is no longer subscribed
AT+CPIN="1764"
OK
AT+CO PS= 0
OK
//Unsolicited messages
+MDSI: 1, 2, "GSM", "IMSI unknown in HLR"
+MDSI: 0, 1, "DEACTIVATE", "Bad SIM"
// Insert a good SIM card, and roam to a network that doesn't have a
GPRS roaming agreement.
//Unsolicited messages
+MDSI: 2, 14, "GPRS", "GPRS services not allowed in this PLMN"
AT+CG ATT?
+CGATT: 0
OK
+MCSN, Motorola Change Subscriber Number
This AT command sets EFmsisdn in the SIM. The setting is placed in the given <index>, using
<number> and <alpha> as the values to be set.
Additionally, when setting the number in a specific storage space, the <mode> parameter defines
whether that <number> and corresponding <alpha>should be presented after entering the correct
PIN number.
After entering the correct PIN number, the last <index>, whose <mode> was set to 1, is sent to the
DTE. This indication is unsolicited and appears when SIM information is ready.
Note: At any given time, only one <index> or no <index> can have <mode> = 1. Therefore,
setting <mode> = 1 for one of the supported <index>es implicitly means that all other
<index>es have <mode> = 0.
Set Command
The Set command sets EFmsisdn in the SIM. The setting is placed in the given <index>, using
<number> and <alpha> as the values to be set.
If only the <mode> value is given, then the Set command is interpreted as follows:
<mode> = 0 - Do not show any number on next +CPIN insertion command
<mode> = 1 - Default <index> (equals 1) is set to <mode> = 1