i used windows hypertrminal to send USSD commands by my New GSM Modem:
D-LINK DWM-156 HW ver:A7 and F/W ver:7.0.1.ME.
i send AT and retrive OK
Send: AT+CUSD=1,"*100#",15
i just receive "AT+CUSD=1,\"*100*1#\"\r\n\OK\r\n" and not another message in hyper terminal windows.
i go to check these commands with another modem and my phone and they returned operator message but i can not retrieve operator message on this model of modem what is wrong with me?
please guide me
i send these command with modems own windows application and it works fine and i found that this model of modem may be have special command before or after sending USSD commands
I'm confuse because this is the simple command and it should works.