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Chapter 3 – Setting Up a Workstation and a Wireless Account
Multi-Tech Systems, Inc. RouteFinder RF825/RF825-AP User Guide (Document Number S000422B) 24
Command Examples
Verifying Signal Strength
1. In the command window:
For EDGE and Verizon CDMA type the following command to query the signal strength: AT+CSQ
Response Example: +CSQ: xx, 99 (For xx, see the values chart below)
All other CDMA type the following command to query the signal strength: AT+CCED
Response Example: +CSQ:16, 99
+CCED:0,0,384,26,2,6,104,2513,2,17,xx,-45,-63 (For xx, see tables below)
2. The modem responds with the received signal strength (rssi).
The following table lists the xx values and explains how they correspond to the number of LEDs lit
for signal strength.
Signal Strength Tables
AT+CSQ Signal Strength LED Bars Signal Strength
0 to 6 No LEDs are lit Very weak signal
7 to 14 1 Bar LED is lit Weak signal
15 to 23 1 Bar and 2 Bar LEDs are lit Stronger signal
24 to 31 1 Bar, 2 Bar, 3 Bar LEDs are lit Strongest signal
AT+CCED Signal Strength LED Bars Signal Strength
-113 to -101 No LEDs are lit Very weak signal
-99 to -85 1 Bar LED is lit Weak signal
-83 to -67 1 Bar and 2 Bar LEDs are lit Stronger signal
-65 to -51 1 Bar, 2 Bar, 3 Bar LEDs are lit Strongest signal
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:
Network Registration Verification
Value Network Registration Status
+CREG: 0,0 The modem is not registered on any network
+CREG: 0,1 The modem is registered on the home network
+CREG: 0,5 The modem is registered on a network and it is roaming
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.
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