At Command For Verifying Signal Strength; At Command For Checking Network Registration And Roaming Status - Multitech Wireless EDGE User Manual

AT Command for Verifying Signal Strength

1. In the command window, type AT+CSQ
2. The modem responds with the received signal strength (rssi) and the channel bit error rate (ber).
RSSI ranges from 0 to 31. BER ranges from 0 to 7
Signal Strength – RSSI
10 - 31
0 - 9
99
Note: Sprint models will respond differently. Please refer to the CDMA AT Command Reference Guide.
AT Command for Checking Network Registration and
Roaming Status
Use this command to verify that the wireless MultiModem has been registered on a wireless network.
1. In the command window, type AT+CREG?
2. The modem will respond in one of the following ways:
Value
+CREG: 0,0
+CREG: 0,1
+CREG: 0,5
Note: If the modem indicates that it is not registered, verify the signal strength to determine if the
problem is the strength of the received signal.
Exiting Modem Mode
1. After the last AT Command is entered, press:
CTRL + ] (the right bracket).
2. The following prompt displays:
telnet>
Type quit and press Enter.
3. Then the following prompt displays:
c:>
Type exit and press Enter.
Multi-Tech Systems, Inc. MultiModem Wireless Modem with Ethernet Interface (S000375E)
Sufficient
Weak or Insufficient
Insufficient
Network Registration Verification
Network Registration Status
The modem is not registered on any network
The modem is registered on the home network
The modem is registered on a network and it is roaming
Chapter 2 – Getting Started
(7 is the highest error rate).
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