User guide

Chapter 2 – Activation and Installation
Multi-Tech Systems, Inc. MultiModem rCell User Guide 15
25B25BAT Command for Verifying Signal Strength
To communicate directly with the cellular modem to verify signal strength, network registration, and roaming status, telnet to the
modem.
Note: Ensure that the Status LED is blinking, indicating that the router is ready.
1. To Telnet to the modem. You can access the modem thru the Run icon or from the Command Prompt:
Click Start I Run icon. In the Open window, enter cmd and then press ENTER.
or
Click Start I All Programs I Accessories I Command Prompt
● In the command window, type telnet 192.168.2.1 5000
● At the Login prompt, type the default user name: admin (all lower-case). Press ENTER
● At the Password prompt, type the default password: admin (all lower-case). Press ENTER
2. In the command window, type AT+CSQ
3. The router 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 (7 is the highest error rate).
Signal Strength – RSSI
10 – 31
Sufficient
0 – 9
Weak or Insufficient
99
Insufficient
AT Command for Checking Network Registration and Roaming
Status
Use this command to verify that the MultiModem rCell Router has been registered on a wireless network.
1. In the command window, type AT+CREG?
2. The router will respond in one of the following ways:
Network Registration Verification
Value
Network Registration Status
+CREG: 0,0 The router is not registered on any network
+CREG: 0,1
The router is registered on the home network
+CREG: 0,5
The router is registered on a network and it is roaming
Note: If the router 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.