Support forum

Hello Dave,

There are two possible reasons why the messages are not received. The first possibility is that the messages are not delivered to your modem by the mobile network. Sometimes SMS messages get stuck in the SMS Central (SMSC) of your mobile network operator because it thinks that your modem is not connected to the mobile network and it might take a couple of hours before the SMSC will try to send the messages again.

Another, more likely, possibility is that the modem was used with other SMS software that set up the modem to store the messages in a memory location where Diafaan SMS Server does not look. To change this, you can try to set the
'ModemInitializationBeginning' property in the advance settings of the GSM Modem Gateway to:
AT+CPMS="MT","MT","MT"
or:
AT+CPMS="ME","ME","ME"
or:
AT+CPMS="SM","SM","SM"

If all three setting don't work I would like to see the full modem log for all of the settings, you can send the logs to dms@diafaan.com.

Regards, Henk