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Communication problem between Loggernet & my GSM/GPRS modem

Jamal Feb 12, 2016 11:42 AM

Good day,

I'm using LoggerNet to establish communication with my CR1000 logger via GSM/GPRS modem, but there is a broblem that prevents communication.

When I scan my COM port, i obtain this:



smile Feb 12, 2016 01:18 PM


It also happens with other numbers?

For test, often I try to call my cell phone, by entering the number in the station configuration.

What kind of modem, caller, you have? Fixed (ie 56K) or GSM?

After many seconds arrives "no carrier"?


JDavis Feb 12, 2016 03:24 PM

NO CARRIER means the modem does not have a network connection. With dial up modems, it means no dial tone.

It would be unusual these days to be operating a cell modem in a Circuit Switched Data mode.(dial up on a cell modem) 

Typically, a GSM modem would be used with a data only account and connected to over an IP connection. Refer to the manual for the LS300G,

Jamal Feb 12, 2016 03:45 PM

Yes, it also happens with other numbers.

I have GSM modem (Ercogener Genpro25e).

I tried to call my number using a terminal, it works with  ATDT06xxxxxxxx; comand. The problem is loggernet doesnt use ";" at the end of dialing commande ATDT

aps Feb 12, 2016 05:39 PM

Jacob, in Europe some still use GSM CSD as it is simpler to setup and often more reliable, although slow and often expensive to use.  It is supported on most networks. 

Looking at the Ercogener modems it seems they now use a UBLOX module internally that (contrary to the GSM standards) uses the ";" to indicate the type of call to be made, although the ";"  normally forces a "voice" call which seems strange unless you are dialling a land-line modem.  Please see the UBLOX AT command manual and refer to the ATD command and the AT+FCLASS commands.

If the device at the other end of the connection needs you to use ";" then you will either have to use the Generic modem type and define your own dial commands, or if the modem has a Windows installation disk (and inf setup files) you may be able to control it with the TAPI modem driver.

farare Sep 22, 2023 07:54 AM

This post is under review.

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