Phone Headset Pinouts

I picked up a Plantronics phone headset that’s nominally compatible with Kyocera phones, but of course not with the Virgin Mobile K127 Marbl I have. More on why I have that phone there. There are, as nearly as I can tell, no third-party headsets available for this phone.

The Plantronics headset has the pinout shown to the upper right in the note below. It’s straightforward:

  • shell — common
  • ring 1 — left audio
  • ring 2 — right audio
  • tip — mic + button

Plugging the headset in causes the phone to throw a hissy fit.

Jamming an open-circuit plug into the phone’s jack has no effect; the phone thinks there’s nothing going on and still routes the audio to the internal speaker.

Evidently, the phone expects a different combination on the plug.

Some Webbish rummaging produced a list of headset pinouts, which goes to show that there’s nothing like having enough standards that everybody can have one…

Headset Pinouts
Headset Pinouts

More tinkering is in order, but I found this list while I was clearing away the rubble from some completed projects and figured I should put it somewhere obvious.

2 thoughts on “Phone Headset Pinouts

  1. I’m trying to find out the audio pinouts for most popular phones. Blackberry, iPhone, LG, Motorola, etc.
    I have found some at Do you have any other suggetions?

    1. Alas, no.

      Those scrawls came from random Web wandering over the course of a month or so, but I wasn’t recording where I found each one. Depending on Google (and its ilk) to find the same thing twice is a bad habit, to be sure, even if it’s encouraged by link rot.

      If you ever do find the Marbl pinout, let me know!

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