1.3.0 Fixed the voice quality issue with G.723 codec. 1.2.0 upgrade the dsp version to 1.4.21.1, the old version is 1.4.6.9 How to check the dsp version: cd ../opvx_tc_linux_x86-1.2.0/bin ./device_info.32bit or device_info.64bit How to upgrade the dsp: cd ../opvx_tc_linux_x86-1.2.0/bin ./file_transfer.32bit(64bit) -w sys/octvocmgw.bin octvocmgw.bin please run the following command to backup your dsp config before upgrading ./file_transfer.32bit -r sys/octvocmgw.bin octvocmgwbk.bin