ussd

I am sending USSD code on modem through serial port. But always it is giving ERROR in response. AT commands I am sending are: in sequence: serialPort.Write("AT+CMGF=0" + "\r\n"); serialPort.Write("AT+CUSD=1,\"*135#\"" + "\r\n"); when I am configuring message format in first AT command, it is giving 'OK' response. But on sending USSD code, response is always 'ERROR'. Why is it so? pumaikar Don't use \n in end of command, use only \r . Form of CUSD command is: AT+CUSD=1,"*135#",15 . In C# it should be: serialPort.Write("AT+CMGF=0" + "\r"); serialPort.Write("AT+CUSD=1,\"*135#\",15" + "\r");

I've been trying to check my balance from by 3g modem via AT commands and seem to be stuck. The device infomation is as follows: Manufacturer: QUALCOMM INCORPORATED Model: M6281 Revision: SSD_M6281A-0.0.1 1 [Oct 02 2008 07:00:00] The modem has USSD capability (advertised and also present in the factory installed dashboard). I am connecting via putty to COM4 serial port which is my modems application port. All AT commands are working fine but I am getting an error on issuing the following via putty: AT+CUSD=1,"*111#",15 This returns a simple "ERROR". *111# is my carrier's balance check code. I

I am creating a App in Android, which required run USSD Code in background. without send my application in background, Whenever I am using Intent.ACTION_CALL to run USSD String ussdCode = "*" + "123" + Uri.encode("#"); startActivity(new Intent("android.intent.action.CALL", Uri.parse("tel:" + ussdCode))); it send my application in background, and open dialer Interface on my application. So it is possible to run USSD code without open Dialer Interface in front. Thanks. Use following code: String ussdCode = "*123#"; Intent intent = new Intent(Intent.ACTION_CALL); intent.setData(ussdToCallableUri

Good day all. I have a simple link on a webpage, in where the user can call an USSD number: <a href="tel:*111*2#" class="phoneCallButtonLink">*CLICK HERE AND CALL *111*2#</a> this is pretty straight forward; now, if I test it on desktop browser, it popups an alert asking me if I want to call (with skype) the number *111*2# , and thats ok. with my Android phone (S Note 3), when testing this page, the phone (or something) stripped out the last "#" (only the last) from the link, resulting in a call to *111*2 . does anyone has experienced this? or knows how to prevent this? Use URL encoding for

I've understood that an USSD message consists of 160 bytes. For 7 bit data coding schemes, the maximum number of characters is 160*8/7 which gives 182 characters. It's unclear to me what is the maximum number of characters for UCS2 encoding. Normally, it would be something like 160/2, but I have some mixed information on this. The maximum size of a USSD message is 160 bytes. For GSM 7 Bit messages you are correct in saying the limit is 182 characters. UC2 encoding per definition is fixed 2 bytes per character so you will have a maximum of 80 characters. 来源： https://stackoverflow.com/questions

I want to generate a tree-based menu using Java that will appear on a USSD browser. Each node may have children, ending with leaf nodes. I will also have to maintain state regarding each user who accesses this menu (like his current position on the menu) to facilitate navigation. Any ideas on how I may achieve the tree generation and state management? I assume that you get a message from the gateway such as: (Session#, UserInput) and you need to compute the next information to send to the user ? I propose: table CURRENTSTATE: Session# State table STATES: State Title table CHOICES: State Choice