Symbol: ECHO_INVALID_CHANNEL
src/add-ons/kernel/drivers/audio/echo/generic/CChannelMask.cpp
181
return( (WORD) ECHO_INVALID_CHANNEL );
src/add-ons/kernel/drivers/audio/echo/generic/CEchoGals_transport.cpp
569
if ( (WORD) ECHO_INVALID_CHANNEL == wPipeIndex )