Specifications

Chapter 8 – Network Service Commands
Multi-Tech Systems, Inc. AT Commands for EDGE (E1) Modems (S000474A) 119
8.6 AT+CSQ Signal Quality
Description: The AT+CSQ execute command indicates the received signal strength <rssi> and the channel bit
error rate <ber>.
Syntax: Test Command: AT+CSQ=?
Response: +CSQ: (list of supported<rssi>s), (list of supported<ber>s)
OK
Exec Command: AT+CSQ
Response: +CSQ: <rssi>,<ber>
OK
Parameter:
<rssi>
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>
0..7 as RXQUAL values in the table in GSM 05.08 section 8.2.4.
99 not known or not detectable
Notes:
• 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.
• This command is not PIN protected.
• This command is not supported in airplane mode.