Has anyone experienced that the application suddenly seems not to work although OpenAT operation still works. The phenomenon is as below:
_ No message is sent via UART anymore.
_ No response for an application-AT-command.
_ Normal response for an OpenAT-command such as: AT+WOPEN? returns 1
_ Ring normally for an incomming call.
If i restarts the application, it will work. If i let it be, it will work again after about some hours!!!
I am using SL6087, Firmware 7.51.
I look forward to any suggestion from someone who experienced this error or knows which causes can potentially make this error?
Thanks in advance
Pham Viet Sam