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Limitation of 12 SMS Messages
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November 20, 2012
3:46 am

Hi Henk,

Thanks for the explanation. I also want to highlight, I had frequent time-out issues with Sierra Wireless FXT009 modem. We have to physically reboot the modem sometimes to get it working again.

In the gateway advanced settings I checked the option for rebooting upon time-outs, after which the SMS server functions smoothly.

Your software is fantastic. (with so many options)


November 19, 2012
11:02 am
Henk Helmantel

Hi Anthony,

The limitation of approx. 12 SMS messages per minute is a limitation of the GSM modems. Some GSM modems are faster than others and 3G modems are usually faster than GSM modems. The maximum (send) speed that I have seen for a 3G modem is approx. 45 messages per minute for the Huawei E173 modem.

The GSM standard defines an option to send and receive SMS messages over a GPRS connection that is supposed to be a lot faster but I have never seen a GSM network that supports this option.

Regards, Henk

November 19, 2012
6:16 am


May I know why there is a limitation of 12 SMS messages per minute per modem?
Can this be increased?

Our application requires a single Mobile number to receive more messages in a given minute?

I have been tested Diafaan SMS Server and it works GREAT! But need to know if there is any way to increase the number of messages received and sent in a given minute.

Thanks in Advance

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