5.1.1.AT Command

• 1.AT+CPIN?

  • Description: 確認是否已輸入密碼

  • Success Response:

      +CPIN:READY
      OK

  • Error Response:

      +CPIN:  +CME ERROR: 

  • Example:

• 2.AT+CSQ

  • Description: 取得模組的signal quality:+CSQ:</rssi/>,</ber/>

  • Mode:

    • 1.AT+CSQ?

      • returns the signal strength of the device

                  Value    RSSI dBm    Condition
                  2    -109    Marginal
                  3    -107    Marginal
                  4    -105    Marginal
                  5    -103    Marginal
                  6    -101    Marginal
                  7    -99    Marginal
                  8    -97    Marginal
                  9    -95    Marginal
                  10    -93    OK
                  11    -91    OK
                  12    -89    OK
                  13    -87    OK
                  14    -85    OK
                  15    -83    Good
                  16    -81    Good
                  17    -79    Good
                  18    -77    Good
                  19    -75    Good
                  20    -73    Excellent
                  21    -71    Excellent
                  22    -69    Excellent
                  23    -67    Excellent
                  24    -65    Excellent
                  25    -63    Excellent
                  26    -61    Excellent
                  27    -59    Excellent
                  28    -57    Excellent
                  29    -55    Excellent
                  30    -53    Excellent

    • 2.AT+CSQ=?

      • list of supporteds

  • Example:

      AT+CSQ?
      +CSQ:18,99

• 3.AT+COPS?

  • Description: 指定或是取得模組的訊號種類(2G/3G/4G)

  • Mode:

    • 1.AT+COPS?

      • 取得目前模組的訊號種類

        • 0 GSM (2G)

        • 1 GSM Compact (2G)

        • 2 UTRAN (3G)

        • 3 GSM w/EGPRS (2.75G)

        • 4 UTRAN w/HSDPA (3.5G)

        • 5 UTRAN w/HSUPA (4G)

        • 6 UTRAN w/HSDPA and HSUPA (3.5G and 4G)

        • 7 E-UTRAN (3G)

• 2.AT+COPS=?

  • list目前模組可用的訊號種類

• 3.AT+COPS=[[, [,[,]]]]

  • 指定模組的訊號種類

    • 4.AT^SIND?

    • Description:

    • Mode:

    • 5.AT^SCFG?

    • Description:

    • Mode:

    • 6.AT+CGDCONT

    • 7.AT+CGCONTRDP