USSD problems with MTK 0828

I'm having problems sending USSD with a VS-GW1600 with 5 modulos (20 ports).

The problem is when trying to send the second command, the commands fails every time.

Specifically the problem only occurs with the modules that have the GSM Module Revision: MTK 0828
On the same Gateway I have also modules with GSM Modulo Revision: 1224B02SIM840W16_OPENVOX and run smoothly with the same secuence of commands.




I need to send USSD commands from all of my 20 ports. I've tested from Web UI, CLI (ssh) and AMI Interface, with the same results.

I would greatly appreciate a solution to this problem.

Best regards!

Hi,

Sorry to make you trouble, It need to update the GSM modules' firmware. Please add my skype upper.hua .

Best regard
upper

Hi upper, i already added you to skype. My skype user is jorge.py

Our time zones are very different, so if we could communicate by email would be very good.

I hope to communicate with you shortly, i need to solve this.

Regards

Hi Jorge,

Please try this command: asterisk -rx "gsm send ussd 1 2 30"
If you still have problem, you can add my skype. I'll help you.

best regards,

skype: linda.li258
email: This email address is being protected from spambots. You need JavaScript enabled to view it.

Hi Jorge,

Please try this command: asterisk -rx "gsm send ussd 1 2 30"
If you still have problem, you can add my skype. I'll help you.

best regards,

skype: linda.li258
email: This email address is being protected from spambots. You need JavaScript enabled to view it.

Hi Linda

The problem persist in the same way.

Even adding 30 to the end of the command. the second command is always fails and does not allow me to continue.