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In normal compatibility mode Diafaan SMS Server instructs the modem to forward the delivery reports directly to Diafaan SMS Server without storing them on the modem. In enhanced compatibility mode Diafaan SMS Server tells the modem to store the delivery reports in the memory of the modem or SIM card and reads them from the memory afterwards.

It depends on the modem which method works best. Older modems, specifically Wavecom models, usually work best in normal mode but newer modem models usually work better in enhanced mode. Both compatibility modes use the standard GSM modem commands that should work on all modems but in practise the standards are subject to interpretation and are not always followed correctly on all modems.

Diafaan SMS Server initially sets the compatibility mode to normal or enhanced depending on the modem model. If there are delivery reports, or received SMS messages, missing then you can try the other compatibility mode.

Regards, Henk

Hello Martin,

To be able to match the message to the delivery report, the number format in the message must be exactly the same as the number format in the delivery report. It is not possible to change the number format of the delivery reports but you can of course change the number format when you send the messages.

If you send all the messages to numbers without the leading '+' then Diafaan SMS Server should be able to match the message IDs in your situation. Most SMS service providers return the numbers in the delivery reports in international number format with a leading '+' so your situation is not typical. If your numbers are submitted in the wrong format then you can use the number template property in the connector- or gateway settings to change the number format before messages are sent.

Regards, Henk