i m using NEOWAY GSM module M590, it is full functional GSM/GPRS serial module it reponds all the AT commands but one problem is there it does not reponse if some interval b/w AT commands is there for 4 or more seconds, its like it goes in sleep mode, it wakes only if we press any one of key from keyboard for a long time untill unless that key is printed on hyper terminal after than it again starts working and if we again do some interval in AT commands then again we have to press a key for long time. i have used this command which is for power save "at+enpwrsave?" which shows that its power saving mode is disables, i have enabled and again disabled this but no difference,
if any one is using this module plz suggest me why the problem of delay is there
Regards