User's Manual

3. CONTROL AND STATUS
89
LZT 123 7361 R1A
3.28 AT+CSQ Signal Strength
Returns the received signal strength indication <rssi> and channel bit
error rate <ber> from the ME. Test command returns values supported
by the TA as compound values.
Description Command Possible Responses
Execute Signal
Strength
AT+CSQ • +CSQ: <rssi>,<ber>
• +CME ERROR <err>
•OK
•ERROR
Test if the command is
supported
AT+CSQ=? • +CSQ: (list of
supported
<rssi>s),(list of
supported <ber>s)
• +CME ERROR <err>
•OK
•ERROR
<rssi> Description
0 –113dBm or less
1 –111dBm
2..30 –109… –53dBm
31 –51dBm or greater
99 Not known or not detectable
<ber> Description
0..7 As RXQUAL values in the table in GSM 05.08 subclause
8.2.4
99 Not known or not detectable