Dear Copperfiled,
Please check the following picture which show that ttyUSB0 is DM port that used for catch module debug log and upgrading firmware. What i mean the audio path is not the module USB port, is the path like handset or speaker. Thanks!
Dear Copperfiled,
Please check the following picture which show that ttyUSB0 is DM port that used for catch module debug log and upgrading firmware. What i mean the audio path is not the module USB port, is the path like handset or speaker. Thanks!