PANASONIC
model(s) wire color pn number
RJ-3200 Audio 2
RJ-3600 Ground 4
RJ-3660 N/C N/C
  Common 4
  PTT 3
  receive 1
model(s) wire color pn number
CR-B1717EU Audio 1
CR-B4737EU Ground 3
CR-B4747EU N/C N/C
CQ-B5919EU Common 5
  PTT 2
  receive N/C
model(s) wire color pn number
RJ-3100 Audio 1
RJ-3050 Ground 2
RJ-3250 N/C N/C
RJ-3150 Common 2
  PTT 3
  receive 4