Clear-Com HX System Frames - Manual (Page 27)

Figure 4: Connecting the matrix) to an analog panel (4-Pair connection)
4.5.2 2-Pair analog
Eclipse HX-PiCo uses a 2-pair analog wiring scheme between the matrix and four-wire
equipment.
Note:
The wiring scheme shown in Figure 5 below is for four-wire equipment with an RJ-45 connector.
For four-wire equipment with other types of connector the pin connections should be changed in
accordance with the installation specification for the four-wire equipment.
27 Eclipse HX-PiCo User Guide