CSQ – request signal quality

This command returns the received signal strength (rssi) and the channel bit error rate (ber).

Type Syntax Returned Result
Test

AT+CSQ=?

+CSQ: (0-31,99),(0-7,99)

 

OK

where:

  • (0-31, 99) is the list of supported <rssi>s
  • (0-7,99) is the list of supported <ber>s
Execute

AT+CSQ

+CSQ: <rssi>,<ber>

 

OK

where:

  • <rssi>is either:
    • 0 – -113dBm or less
    • 1 – -111dBm
    • 2...30 – -109... -53dBm
    • 31 – -51dBm or greater
    • 99 – Not known or not detectable
  • <ber> is either

    • 0-7 – between 0.2% and 12.8%.

      For more information, consult the RXQUAL values in the following table:

      3Gpp TS 45.008 subclause 8.2.4

    • 99 – Not known or not detectable

or

+CME ERROR: <err> – the command failed.

Example

AT+CSQ

+CSQ: 3,99

 

OK

Where to next?

Related resources