Specifications

Modem Status, Customization, and Reset Commands
Rev 7 May.12 Proprietary and Confidential 59
!SELRAT
Supporting chipsets:
• All
Set/return current radio access technology (RAT)
Configure the modem to use a specific (or preferred) RAT.
Usage:
• Execution: AT!SELRAT=<ratInd>
Response:
OK
Purpose: Set the desired RAT configuration.
• Query: AT!SELRAT?
Response:
<ratInd>, RAT configuration description
OK
or Unknown RAT mode. Use AT!SELRAT to set mode.
<ratInd>
OK
Purpose: Return the current RAT configuration index (<ratInd>) and description.
If the <ratInd> is undefined, an error message is returned.
• Query List: AT!SELRAT=?
Purpose: Return a list of supported RAT configurations.
Parameters:
<ratInd> (RAT configuration index):
• 00=Automatic
• 01=UMTS 3G only
• 02=GSM 2G only
• 03=UMTS 3G preferred
• 04=GSM 2G preferred
• 05=GSM and UMTS only
• 06=LTE only
• 07=GSM, UMTS, LTE
• 08=CDMA, HRPD, GSM, UMTS, LTE
• 09=CDMA only
• 0A=HRPD only
• 0B=hybrid CDMA/HRPD
• 0C=CDMA, LTE
• 0D=HRPD, LTE
• 0E=CDMA, HRPD, LTE
• 0F=CDMA, GSM, UMTS
• 10=CDMA, HRPD, GSM, UMTS
!SIMNOTINSTALLED
Supporting chipsets:
• All
Return SIM installation status
Indicate if a SIM is installed in the modem.
Usage:
• Query: AT!SIMNOTINSTALLED?
Response:
OK (SIM is not installed)
or
ERROR (SIM is installed)
Purpose: Indicate if SIM is installed.
Table 3-2: Modem status, customization, and reset commands (Continued)
Command Description