Chapter 4 – Safety
Situation B: The modem always returns «Error» when trying to issue a communication
If the Wireless MultiModem returns a message of error upon an attempted transmission of data or voice signals, see the table below for possible causes and solutions.
Solutions for “error” message situations
If the modem | Then ask … | Action |
returns |
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Error | Is the modem registered on the | Follow “Verifying network registration" procedure to |
| network? | be sure modem is registered on network. |
|
|
|
| Is the modem receiving an | End any communication using the ATH command. |
| incoming call or is it already in |
|
| communication? |
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| Does AT+CREG? return 0,1 | If not, check for adequate signal strength on network. |
| (registered) or 0,5 (registered | Use AT+CSQ. |
| roaming)? |
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|
|
| Is the selected bearer type | In comm. program, type AT+CMEE=1 to view the |
| supported by the called party? | extended error codes (see “Error Results Codes" in |
|
| the AT Command guide). |
| Is the selected bearer type | Be sure called party and network support selected |
| bearer type. | |
| supported by the network? | Be sure that |
|
| after the phone number in the AT command. e.g., |
|
| ATD######; |
| Is the received signal strong | See “Signal Strength Verification” |
| enough? |
|
| Is the antenna properly | See “Antenna Specifications” |
| connected? |
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