At+Csq Signal Quality - Siemens TC37 Module At Command Reference

AT Command Set

4.42 AT+CSQ Signal quality

Test command Response
AT+CSQ=? +CSQ: (list of supported <rssi> s ), (list of supported <ber> ) OK
Parameter
See execute command
Execute command Response
TA returns received signal strength indication <rssi> and channel bit error rate
AT+CSQ
<ber> from the ME.
+CSQ: <rssi>, <ber> OK
Parameter
<rssi>
<ber>
Reference Note
GSM 07.07
TC3X_ATC_01_V04.00
Receive level:
0 -113 dBm or less
1 -111 dBm
2...30 -109... -53 dBm
31 -51 dBm or greater
99 not known or not detectable
Bit error rate:
0...7 as RXQUAL values in the table in GSM 05.08
section 8.2.4.
99 not known or not detectable.
To check the bit error rate there must be a call in progress to
obtain realistic values. If no call is set up, there is no BER to be
determined. In this case the indicated value may be 0 or 99,
depending on the SIM card.
Page 114 of 204 29.05.2002