Command Format

Action Command
Test Command Read AT+<cmd>=?
Read Command AT+<cmd>?
Set Command AT+<cmd>=p1,p2,p3
Execution Command AT+<cmd>

Search for Network and Connect

  1. AT+NBAND? Query Band
  2. AT+CFUN? value :1
  3. AT+CIMI Query IMSI number
  4. AT+CSQ Query the signal strength
  5. AT+NUESTATS Query module status
  6. AT+CGATT? Back + CGATT: 1 indicates that the attachment is successful, with a delay of about 30s
  7. AT+CEREG? Search for network status, 1 for Internet, 2 for Network
  8. AT+CSCON? Query the connection status, 1 CONNECT, 0 IDLE

Manually Configure Network

  1. AT+CFUN=1
  2. AT+CIMI Execute CFUN = 1, wait for 4 seconds to query IMSI, if it can be found that the card has been identified; If not, please check the card is inserted and confirm whether it is a USIM card.
  3. AT+NBAND? Query frequency band information.
  4. AT+CEREG=1 Set to automatically register network registration status, when the module registered on the network, will report URC.
  5. AT+CGDCONT=1,“IP”,“APN” The APN is configured locally (or not configured) for local access.
  6. AT+COPS=1,2,"46000" Specify PLMN search, PLMN configuration.
  7. AT+CSQ Query signal strength.
  8. AT+NUESTATS Query module status
  9. AT+CGATT? Back + CGATT: 1 indicates that the attachment is successful, with a delay of about 30s
  10. AT+CEREG? Search for network status, 1 for Internet, 2 for Network
  11. AT+CSCON? Query the connection status, 1 CONNECT, 0 IDLE

Network connectivity status chart

  1. Connect status (+ CSCON: 0, 1, the module is in this state after network injection), the duration of this state is configured by the base station, and and can be controlled by the device between the range of 1-3600 seconds, the default being 20s.
  2. Idle state (+ CSCON: 0,0), this state lasts the time to dispose by the key network, by Active timer (T3324) Come Control, the range of 0-11160s, the default 10s.
  3. PSM state (Judgment by power consumption, the maximum power consumption 5uA), the duration of the state by the core network configuration, set by the TAU Timer (T3412) to control the range of 0h-310h, the default 24h.