Our customer is testing the product ( using WISMO 228 ) in Dubai. Unluckily the module can not send SMS with Etisalat SIM while it works well with DU SIM. Both SIM work with mobiphone normally. Does anyone know the reason ? How could we setup the module ?
What could we ask them while the Etisalat SIM works with mobile phone normally ?
Here is my customer raw information :
Hi Anh,
found out that Etisalat normal prepaid SIM card is unable to send SMS. Seems GPRS, other GSM commands, receiving SMS, calling / receiving phone calls work. Tested with phone, enough credit. Tested 2 Etisalat SIM card and two units. Both units work with DU SIM card.
Bad luck there is no error code. the module likes “hang” :
[i]
Cmd:
AT+CMGS=20
Resp:
AT+CMGS=20
Cmd:
079179516060000011000C913619574445120000A706E877BA4C4F03
Resp:
079179516060000011000C913619574445120000A706E877BA4C4F03 <---- wait too long but there is no error code return
*PSSTK: “SETUP MENU”,1,4,“etisalat”,0,0,1,0,0,1 <— we need to reset gsm module [/i]