Exit from low power mode

Hi,

I have an application who must pass in slow idle mode to save power and, all days, must restart in normal mode connect a GPRS server and send data.

I’m able to pass in slow IDLE mode with AT commande (AT+WBHV=1,2; AT+CFUN=1) but when my timer ending, I not able to reactive modem with AT+WBHV=1,0; AT+WFUN=1.

Could anyone help me?

Thanks in advance