Example; Checking Network Registration - Multitech QuickCarrier USB-D User Manual

AT+CSQ
The command indicates signal quality, in the form:
+CSQ: <rssi>,<rsrq>
Where:
<rssi>
0
1
2-30
31
99
<RSRQ>[in dBm]: Reference signal received quality, in dB
0
1
2
3
4
5
6
7
99
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:
®
QuickCarrier USB-D MTD-MAT1 User Guide
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
(-4%) to (-3%) dB
(-6%) to (-5%) dB
(-8%) to (-7%) dB
(-10%) to (-9%) dB
(-13%) to (-11%) dB
(-15%) to (-14%) dB
(-17%) to (-16%) dB
(-19%) to (-18%) dB
Not known or not detectable
BASIC OPERATIONS
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