> 8.6 | AT+CSQ Signal quality

> The AT+CSQ execute command indicates the received signal strength <rssi> and the channel bit error rate <ber>.
> Syntax

> Test Command AT+CSQ=?
> Response(s)
> +CSQ: (list of supported<rssi>s), (list of supported<ber>s)
> OK

> Exec Command AT+CSQ
> Response(s)
> +CSQ: <rssi>,<ber>
> OK

> Reference(s) |  | PIN |  | ASC0 | ASC1 | USB | MUX1 | MUX2 | MUX3 |  |  | Charge | Q | Last
> GSM 07.07 |  | - |  | + | + | + | + | + | + |  |  | - | - | -

> Parameter Description

> <rssi>(num)

> 0
> -113 dBm or less
> 1
> -111 dBm
> 2..30
> -109... -53 dBm
> 31
> -51 dBm or greater
> 99
> not known or not detectable

> <ber>(num)

> 0..7
> as RXQUAL values in the table in GSM 05.08 section 8.2.4.
> 99
> not known or not detectable
> Note

> • | After using network related commands such as AT+CCWA, AT+CCFC, AT+CLCK, users are advised to wait 3s before entering AT+CSQ. This is recommended to be sure that any network access required for the preceding command has finished.