Multi-Tech Systems MTD-H5 Manuel D’Utilisation
BASIC OPERATIONS
+CSQ: <rssi>,<ber>
Where:
<rssi>
Received signal strength indication.
0
(-113) dBm or less
1
(-111) dBm
2-30
(-109) dBm - (-53) dBm / 2 dBm per step
31
(-51) dBm or greater
99
Not known or not detectable
<ber>
Bit error rate, in percent
0
Less than 0.2%
1
0.2% to 0.4%
2
0.4% to 0.8%
3
0.8% to 1.6%
4
1.6% to 3.2%
5
3.2% to 6.4%
6
6.4% to 12.8%
7
More than 12.8%
99
Not known or not detectable
Note:
Signal strength of 10 or higher is needed for successful packet data sessions.
Example
A example response to AT+CSQ:
+CSQ: 15,1
Checking Network Registration
Before establishing a packet data connection, verify the is device registered on the network. To do this enter the
network registration report read command:
network registration report read command:
AT+CREG?
If the device returns:
+CREG: 0,1
20
QuickCarrier
TM
USB-D MTD-H5 User Guide