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CONFIGURING AND COMMUNICATING WITH YOUR DEVICE
To confirm communication with the device:
Type AT and press Enter.
If the device responds with OK, it is properly communicating.
Verifying Signal Strength
To verify the device signal strength, enter:
AT+CSQ
The command indicates signal quality, in the form:
+CSQ: <rssi>,<ber>
Where:
<rssi>
0
1
2-30
31
99
<ber>
0
1
2
3
4
5
6
7
99
Note:
Signal strength of 10 or higher is needed for successful packet data sessions.
Example
A example response to AT+CSQ:
28
Received signal strength indication.
(-113) dBm or less
(-111) dBm
(-109) dBm - (-53) dBm / 2 dBm per step
(-51) dBm or greater
Not known or not detectable
Bit error rate, in percent
Less than 0.2%
0.2% to 0.4%
0.4% to 0.8%
0.8% to 1.6%
1.6% to 3.2%
3.2% to 6.4%
6.4% to 12.8%
More than 12.8%
Not known or not detectable
QuickCarrier™ USB-E MT100UCC-EV3 Developer Guide
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