17
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Signal quality
Check the signal quality by “AT+CSQ”. With this command the physical signal quali-
ty is tested. It should be higher than 10, otherwise a data transmission can be un-
stable despite of a successfully booked in modem.
Status question
By “AT+CREG?” the registration status is shown by the device.
Name of provider network
By “AT+COPS?” the provider name is querried and shown by the device.
Check oft he dial-in- function
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Check the dial-in- function as follows: ATDT followed by a phone number. With the
command ATH or AT+CHUP you can close a call.
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Sending of an SMS
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Call of the SMS- service of the provider: AT+CSCA="+49xxxxxxxxxx" (Example for
Germany).
The SMS is to be transmittes by PDU- or Text- mode to the modem. Please use the
AT- commands that are described in the AT-command manual (PDF on product-
CD)
11. Troubleshooting
In case the modem still reacts you can load the standard settings of the manufac-
turer with the command “AT&F”. Then you have to re-start the program and adjust
all settings.
Please check if other tools and software of your computer causes an IP- address-
conflict.
Connection cannot be established:
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Common mistakes that may happen are:
