By default, CS18AI audio is routed as follows to a StudioLive RM mixer:
Mic/Line input 1/TB is assigned as the source for the StudioLive RM mixer Talkback. It will also be available as the network source for Channel 31 of the RM mixer.
Mic/Line input 2 is unassigned by default but will be available as the network source for Channel 32 of the RM mixer.
Line inputs 3 and 4 are assigned as the network source for the stereo Digital Return input of the RM mixer.
NOTE: in order to hear input to the CS18 on any of these RM channels, they must have their Input Source set to Network. Channel 31 and 32 are set to Analog by default (or Firewire on an RM16), and the Dig Ret channel is set to Firewire by default.