How to cancel the last AT command ( Delphi - TComport )?

Question

I send this command "AT+CUSD=1,"*511#",15", the answer is:

'+CUSD: 1,"Points Noudjoum
1: Mes points
2: Convertir en Units
3: Convertir en cadeaux physiques
4: Points Bonus
5: Catalogue
6: Conso
Tapez 1-6",15'

Here I need to send again the integer 1, 2, 3, 4, 5 or 6 depending on the option i want but at this point I can't send another AT command "AT+CUSD=1,"*113#",15" for example, it shows an error because it is expected to send the number of the option.
How can I break or cancel it so I can send another AT command ?

New name for every question?? Try `at+cusd=1,2,15` to choose `2: Convertir en Units` — MBo, Dec 03 '19 at 16:35
@MBo His first question got two down votes. I think that is why he is doing this. — Nasreddine Galfout, Dec 03 '19 at 19:50
@MBo am not trying to know how to choose an option i want a command that cancels the first command so i can send other commands, Thank you anyway — Clay, Dec 03 '19 at 22:34
@nasreddine-galfout am not trying to hide who i am my friend i just want help with my problem, i couldn't ask more questions because of the down votes that's why i did that. — Clay, Dec 03 '19 at 22:34
Just of curiosity, and to learn more about the issue, which brand and model is your device? — Tom Brunberg, Dec 04 '19 at 14:10
@TomBrunberg i checked available commands using **AT+CUSD=?** and the answer was **+CUSD: (0-2)**, the device is Lonsai LS100, its a USB modem. Thanx again — Clay, Dec 04 '19 at 14:26
Sorry for the confusion. There are lots of people trying to abuse the system, I hope that with the votes gained from this post you can continue asking questions :). — Nasreddine Galfout, Dec 05 '19 at 00:57

Tom Brunberg · Accepted Answer · 2019-12-04T14:32:05.000

2

If your device supports it, send a command

AT+CUSD=2

It is not clear whether all devices support it, but it is documented for some devices, (e.g. in SIM7500_SIM7600 Series_AT Command Manual _V1.10). Meaning is cancel an ongoing USSD session.

To find out whether the device supports this command, you can send

AT+CUSD=?

and the device will respond with the range accepted.

edited Dec 04 '19 at 14:32

answered Dec 04 '19 at 14:16

Tom Brunberg

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How to cancel the last AT command ( Delphi - TComport )?

1 Answers1