Quectel EC25

LTE Module Series
EC25&EC21 AT Commands Manual
EC25&EC21_AT_Commands_Manual 78 / 231
6.3. AT+CSQ Signal Quality Report
The command indicates the received signal strength <rssi> and the channel bit error rate <ber>.
Parameter
AT+CSQ Signal Quality Report
Test Command
AT+CSQ=?
Response
The Test Command returns values supported by the TA.
+CSQ: (list of supported <rssi>s),(list of supported <ber>s)
OK
Execution Command
AT+CSQ
Response
The Execution Command returns received signal strength
indication <rssi> and channel bit error rate <ber> from the
ME.
+CSQ: <rssi>,<ber>
OK
+CME ERROR: <err>
Maximum Response Time
300ms
Reference
3GPP TS 27.007
<rssi> 0 -113dBm or less
1 -111dBm
2...30 -109dBm... -53dBm
31 -51dBm or greater
99 Not known or not detectable
100 -116dBm or less
101 -115dBm
102...190 -114dBm...-26dBm
191 -25dBm or greater
199 Not known or not detectable
100~199 Extended to be used in TD-SCDMA indicating received signal code
power (RSCP)
<ber> Channel bit error rate (in percent)
0...7 As RXQUAL values in the table in 3GPP TS 45.008 subclause 8.2.4
99 Not known or not detectable