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October 19, 2016
11:42 am
Henk Helmantel
Admin
Forum Posts: 551
Member Since:
May 28, 2013
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Hello Elson,

This error means that Diafaan SMS Server is not able to communicate with your cellular modem. The problem can be that the modem you use does not conform to the standard AT commands for cellular modems or that there is another problem with the modem, with the modem driver or with the connection to the modem.

You can see the commands that Diafaan SMS Server sends to the modem and the response that the modem sends back in the communication log of the modem. This log can help you find the source of the problem.

Another way to test the modem is to use a terminal program like PuTTY to connect to the modem and send the modem commands manually. If you are able to send commands like 'AT+CGMI' and get a valid response then the modem should also work with Diafaan SMS Server. If you do not get a response then there is probably something wrong with the modem.

Regards, Henk

October 19, 2016
5:39 am
Elson John
Guest
Guests

Hi,

How to fix this error in Diafaan SMS Server: "300, Error: Timeout error, no or unexpected response after GSM Modem send command"?

Thanks.

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