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USSD request and no replay
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March 22, 2017
9:30 am
Henk Helmantel
Admin
Forum Posts: 698
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May 28, 2013
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The Wavecom Q2303A module is supported by Diafaan SMS Server. This module also supports USSD.

Regards, Henk

March 21, 2017
8:50 pm
Akram Bazina
Guest
Guests

Hello Henk

Is this modem supported by diafaan server and USSD "GSM Modem Wavecom Q2303A Module USB Interface AT Commands SMS"?
I want to make sure it's working before i buy it.
Thank you for your help

March 18, 2017
3:47 pm
Henk Helmantel
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Forum Posts: 698
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May 28, 2013
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I have tried to send a flash message to our TP-Link MA-180 and Diafaan SMS Server also does not receive flash messages from the modem. Apparently the TP-Link modems don't save flash SMS messages to the SIM card like most other modems do.

If receiving flash messages is important for you then you can set the 'ModemInitializationEnd' property in the advanced settings of the GSM Modem Gateway to 'AT+CNMI=1,2,0,1'. This instructs the modem to send the received SMS messages (including flash messages) directly to Diafaan SMS Server instead of storing them on the SIM card first.

I don't have a solution for the USSD issue. If you have a modem from another manufacturer available for testing you could try if you have the same issue with USSD commands. If that is the case then the problem is almost certainly with the mobile network.

Regards, Henk

March 18, 2017
12:16 am
Akram Bazina
Guest
Guests

Hello Henk Helmantel

I am still having the same problem. I have contacted the Administrator for USSD system in my operator and the log file for my transaction was sent successfully. and I have used another SIM card from different operator still the same issue.
I have installed Diafaan server in another machine and the same issue.

I have tried to send a flash message to the same MSISDN which I use in the Modem, and the message was sent successfully and the delivery report was successful and no received message.

and i have used diafaan online PDU decoder for the flash message.

sending a flash message to it self log:
2017/03/18 00:53:45.276 > AT+CMGL=4
2017/03/18 00:53:45.322 < OK
2017/03/18 00:53:46.647 > AT+CSQ
2017/03/18 00:53:46.694 < +CSQ: 24,99
2017/03/18 00:53:46.725 < OK
2017/03/18 00:53:46.725 > AT+CREG?
2017/03/18 00:53:46.772 < +CREG: 0,1
2017/03/18 00:53:46.803 < OK
2017/03/18 00:53:50.486 > AT+CMGL=4
2017/03/18 00:53:50.533 < OK
2017/03/18 00:53:54.212 > AT+CMGS=21
2017/03/18 00:53:54.259
2017/03/18 00:53:54.259 > 079112989191100231060C911298310020380010AA07F4F29C0ED24101
2017/03/18 00:53:57.210 < +CMGS: 243
2017/03/18 00:53:57.242 < OK
2017/03/18 00:53:58.970 < +CDS: 25
2017/03/18 00:53:59.079 < 079112989191100206F30C91129831002038713081005575807130810055058000
2017/03/18 00:53:59.298 > AT+CMGL=4
2017/03/18 00:53:59.345 < OK

and this is the log for USSD command:
017/03/18 01:04:17.008 > AT+CREG?
2017/03/18 01:04:17.055 < +CREG: 0,1
2017/03/18 01:04:17.087 < OK
2017/03/18 01:04:20.490 > AT+CMGL=4
2017/03/18 01:04:20.537 < OK
2017/03/18 01:04:22.626 > AT+CUSD=1,"*111#",15
2017/03/18 01:04:22.673 < OK
2017/03/18 01:04:25.550 > AT+CMGL=4
2017/03/18 01:04:25.596 < OK
2017/03/18 01:04:30.594 > AT+CMGL=4
2017/03/18 01:04:30.634 < OK
2017/03/18 01:04:35.796 > AT+CMGL=4
2017/03/18 01:04:35.843 < OK
2017/03/18 01:04:40.806 > AT+CMGL=4
2017/03/18 01:04:40.852 < OK

Now i am out of ideas to solve this issue. and I am stuck on deliver 3 projects based on USSD feature.
Please any ideas

March 6, 2017
11:46 am
Henk Helmantel
Admin
Forum Posts: 698
Member Since:
May 28, 2013
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The log shows that the modem does not return a response after sending the USSD command '*121#'. The most likely reason is that this USSD command is not supported by the mobile network.

I have made a quick test with the TP-Link MA180 and it does support USSD commands, we do not have an MA260 available for testing but the problem is probably not this modem but the USSD support of your mobile network as well.

Regards, Henk

March 6, 2017
10:58 am
Akram Bazina
Guest
Guests

Hello Henk

my GSM modem is TP-Link MA260 and I used to send and receive USSD messages. But then it sends the USSD request with no replay. I used a service called "Please call me" and it sends a message to the B party. so the commands executed in the modem correctly. i have enabled the communication log and this is the part of send USSD message:
2017/03/06 11:47:53.652 > AT+CUSD=1,"*121#",15
2017/03/06 11:47:53.692 < OK
2017/03/06 11:47:58.537 > AT+CMGL=4
2017/03/06 11:47:58.579 < OK
It seems everything is OK. but still not receiving any message. I have bought a new GSM modem TP-Link MA180 to test it and still the same problem

please help me with this issue.

Best Regards;

March 6, 2017
10:15 am
Henk Helmantel
Admin
Forum Posts: 698
Member Since:
May 28, 2013
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Not all GSM modems support USSD and perhaps your modem is one of them.

If you enable the communication log option for the GSM Modem Gateway in Diafaan SMS Server, you can see in the log if there is a response to the USSD command. If there is no response then the GSM modem probably does not support USSD or the mobile operator does not recognize the USSD command.

Regards, Henk

March 4, 2017
3:48 pm
Akram Bazina
Guest
Guests

Hello Gentlemen
when i send a USSD message using GSM Modem like "*111#" to retrieve the balance, I didn't recience and replay message. if anyone can help me with this.

Thanks in advance

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