BASIC OPERATIONS
QuickCarrier
®
USB-D MTD-MAT1 User Guide
25
AT+CSQ
The command indicates signal quality, in the form:
+CSQ: <rssi>,<rsrq>
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
<RSRQ>
[in dBm]: Reference signal received quality, in dB
0
(-4%) to (-3%) dB
1
(-6%) to (-5%) dB
2
(-8%) to (-7%) dB
3
(-10%) to (-9%) dB
4
(-13%) to (-11%) dB
5
(-15%) to (-14%) dB
6
(-17%) to (-16%) dB
7
(-19%) to (-18%) dB
99
Not known or not detectable
Note:
Signal strength of 10 or higher is needed for successful packet data sessions.
Note:
For additional information and to verify the device signal strength, see ME910C1 AT Command Guide
(80529ST10815A, Rev. 2).
Example
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:
