Rainbow Electronics MG260 - Manual (Page 44)

FLYFOT-MG260-MODULE
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6 Network service commands
6.1 Signal Quality +CSQ
Description :
This command is used to ascertain the received signal strength indication (<rssi>) and the channel
bit error rate (<ber>) with or without a SIM card inserted.
Syntax :
Command syntax : AT+CSQ
Command
Possible responses
AT+CSQ
+CSQ: <rssi>,<ber>
OK
Note : <rssi>,<ber> as defined below
AT+CSQ=? +CSQ:(0~31),(0~7)
OK
Note : get parameter range
AT+CSQ? +CME ERROR: 3
Note : not support
Defined values :
<rssi> :
0: -113 dBm or less
1: -111 dBm
2 to 30: -109 to –53 dBm
31: -51dBm or greater
99: not known or not detectable
<ber> : 0…7: as RXQUAL values in the table GSM 05.08
99: not known or not detectable
Notes: <ber> is not valid and only response “99”
6.2 Operator selection +COPS
Description :
There are three possible ways of selecting an operator (PLMN):
1) The product is in manual mode. It then tries to find the operator specified by the application and if
found, tries to register.