24.7 AT+AUDRESUME–Resuming Audio Playing ....................................................................... 212
24.8 AT+AUDCFG–Settings of Audio Playing .............................................................................. 213
24.9 AT+AUDPCMRATE–Setting the Sampling Rate of Playing the PCM Format Audio ............ 214
25 SIM Card Related Commands ............................................................. 215
25.1 AT+SIMCROSS–Switching SIM ........................................................................................... 215
26 Other Commands ................................................................................ 217
26.1 AT$MYPOWEROFF–Powering off the Module .................................................................... 217
26.2 AT$MYSOCKETLED–Controlling the Indicator of Socket Status ......................................... 217
26.3 AT$MYGMR–Obtaining the Firmware and Hardware Information of the Module ................ 218
26.4 AT$MYCCID–Obtaining the CCID of the SIM Card .............................................................. 219
26.5 AT$MYTYPE–Querying the Type of the Module .................................................................. 219
26.6 AT$MYMODEM–Querying the Type of the Module .............................................................. 220
26.7 AT$MYBCCH–Locking BCCH Channel ................................................................................ 221
26.8 AT$MYBAND–Locking GSM Band ....................................................................................... 223
26.9 AT$MYLACID–Querying Current LAC and CELL_ID ........................................................... 223
26.10 AT$MYCGED–Querying Current Channel, RX Power, and TX Power .............................. 224
26.11 AT$MYSYSINFO–Querying or Locking the Network Mode ............................................... 225
26.12 AT$MYSYSINFOURC–Switch of Network Mode URC Indication ...................................... 226
26.13 AT$MYURCSYSINFO–Network Mode URC Indication ...................................................... 227
26.14 $MYURCSYSINFO–Indicating Network Mode ................................................................... 228
26.15 AT$MYNETINFO–Setting Network Mode Choices ............................................................. 228
26.16 AT$MYNETAUTO–Enabling/Disabling the Default AUTO Network Modes during Startup 229
26.17 AT^SYSINFO–Setting Network Mode Choice .................................................................... 230
26.18 AT+XISP–Selecting Internal or External Protocol Stack .................................................... 232
26.19 AT+NRSP–Querying RSRP, RSRQ, SINR of Cells in a Neighbor of a Serving Cell on the LTE
Network .......................................................................................................................................... 232
26.20 AT+NETMSG–Querying Network Registration Information ................................................ 233
26.21 AT+NETDMSG–Querying Network Registration Information ............................................. 235
26.22 AT+READADC–Reading ADC Value .................................................................................. 236
26.23 AT+SIMHOTSWAP–Setting the Hotswapping Function ..................................................... 237
26.24 AT+MYDATAONLY–Disabling CS Services ........................................................................ 238
26.25 AT+BANDLOCK–Locking to Band ...................................................................................... 239
26.26 AT+MYCELLINFO–Obtaining Information of Neighbor Cells ............................................. 240
26.27 AT+NCUSTSWITCH–Switch of Extended Functions ......................................................... 242
26.28 AT+NBANDLOCK–Locking Multiple Frequency Bands ...................................................... 244
26.29 AT+NFREQLOCK–Locking the Specified Frequency ........................................................ 245
26.30 AT+NWCUSTPIN–Setting Specified GPIO ........................................................................ 247
26.31 AT+IPINFO–Querying Socket Connection Information ...................................................... 248
26.32 AT+SETTZ–Setting Clock Offset Time ............................................................................... 249
26.33 AT+NWCHANNEL–Setting the Network Activation Channel .............................................. 250
26.34 AT+CGACT–Activating/Deactivating PDP Context ............................................................ 251
26.35 AT+FTPGETF–FTP Upgrade Command ............................................................................ 252
26.36 AT+RIMEIR–Reading the Written Record of IMEI Number ................................................ 254