Picked up an old headset in an aerojumble. The headphones are ok, The mic
does not work because the mic plug was removed.

I was wondering how one wires up the mic plug. I just happen to have a pj068
about.

The mic cable has an inner cable with a screen outside of it, There are
three possible connecting places on the pj068. Just wondering how I should
connect it.

BTW the headset is a Telex E951.
Thanks
sg