I could not find this after a long on-line search, so I'm posting what I learned from disassembling the headset.
JVC GY-DV550 camera with KA-300 intercom headset
1 - red - mic hot
2 - white - earphone +
3 - not used
4 - mic shield
5 - black - earphone -
I don't know whether the wiring is the same for other JVC video cameras, but would guess that it is.
Copyright © 2009 John E. Carter
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