E.g. do nothing if the response is empty: <debug> (ttyUSB1): -->'AT^GETPORTMODE<CR>' <debug> (ttyUSB1): <--'<CR><LF>^GETPORTMODE: TYPE: WCDMA: Huawei Technologies Co.,Ltd.,<CR><LF><CR><LF>OK<CR><LF>'
E.g. do nothing if the response is empty: <debug> (ttyUSB1): -->'AT^GETPORTMODE<CR>' <debug> (ttyUSB1): <--'<CR><LF>^GETPORTMODE: TYPE: WCDMA: Huawei Technologies Co.,Ltd.,<CR><LF><CR><LF>OK<CR><LF>'