How to respond to USSD Push | Thales IoT Developer Community
October 16, 2014 - 7:15pm, 4995 views
Hello,
This might be me failing to read the AT commands manual, but I could not figure out how to respond to a USSD Push or cancel the push.
In this scenario, I am sending a network initiated USSD push (request or notification) to the module.
I receive the push inside
ATCommandListener {
public void ATEvent(String inEvent) {
But I cannot figure out which AT command to use to respond to the push. My aim is only to acknowledge the push notification from the handset: in this specific use case, the USSD Gateway does not expect any information from the Mobile Device.
If the Mobile Device does not respond it causes the corresponding TCAP transaction to linger at the MSC/VLR/HLR/USSD GW for a few seconds.
What is the AT command to respond the current Network Initiated USSD Request?
Oct 17 2014 - 8:25pm
Hi,
we're checking this. You'll be updated as soon as possible.
Regards
Jedrzej
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Oct 18 2014 - 11:09pm
Basically Compliance with USSD requires that the Mobile Station waits for a response or release event from the Application and then responds to the network entity to continue or release the TCAP transaction.
As long as the transaction is not released, a subsequent push or pull cannot happen. usually, the MSC/VLR/HLR will time out and close transactions usually between 30 seconds and 5 minutes.
ETSI TS 123 090 V11.0.0 (http://www.etsi.org/deliver/etsi_ts/123000_123099/123090/11.00.00_60/ts_... ) says in 5.2.5 :
the MS shall pass the message to the application addressed in the ME, SIM or TE, and await application response . If the application responds, the MS shall pass the response to the MSC, maintaining the transaction. If the application releases the transaction, the MS shall release the transaction.
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Oct 29 2014 - 7:09pm
Hello,
This issue has been taken over by the local technical support.
Best regards,
Bartłomiej
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