Clear-Com V12PDDXY - Manual (Page 164)

The output audio stream crosspoint options are:
Crosspoint options Description / comments
hs1l
Headset 1 left ear
hs1r
Headset 1 right ear
hs2l Headset 2 left ear
hs2r
Headset 2 right ear
ls
Main loudspeaker
auxls
Auxiliary loudspeaker
mtx1 Mono audio to the matrix via the analogue connection or one
channel of stereo via an AES-3 card
mtx2 Second channel of stereo to matrix via AES-3 card
ext1
External output 1 on auxiliary audio connector
ext2 External output 2 on auxiliary audio connector
hotmic Output to hot microphone on auxiliary audio connector
larec
Listen again output
voicerec
Message recording output
Table 43: Crosspoint options in display 2 (output)
164 V-Series Panels User Guide