Clear-Com V12PDDXY - Manual (Page 175)

The available input channels where the trim can be set are:
Options Description / comments
ext1
Input from external input 1 on the auxiliary audio connector
ext2
Input from external input 2 on the auxiliary audio connector
hs1 Input from headset 1 microphone
hs2 Input from headset 2 microphone on the auxiliary audio
connector
Table 61: Input channels (display 2)
8.3.13 outtrim
The outrim command allows the trim, or gain, to be adjusted on each of the input streams.
Display 2 shows the stream name.
Display 3 shows the trim in dB.
Figure 204: outrim display
175 V-Series Panels User Guide