CTS state after a dropped data call


#1

Hi, I’m having a problem where I’m sending a large stream of data from a Q2686 to another modem (i.e. a WAVECOM WMOD2). If the call is dropped during the transfer (I.e. Power is lost to the WMOD2) the Q2686 eventually deasserts CTS stopping the transmission. After a short period, the call is dropped and the DCD line deasserts. However at this point it appears that CTS line does not re-assert and the UART connected to the Q2686 cannot send AT commands or accept calls becuase the CTS line is deasserted. This CTS does not reassert even if a call is made to the Q2686. :frowning: