TELECOM Digest OnLine - Sorted: Re: Headset Hack

Re: Headset Hack

BrianEWilliams (
25 Sep 2006 06:14:42 -0700

BrianEWilliams wrote:

> I am addicted to my telephone headset, and I like using a corded phone
> for the sound quality and privacy. Caller ID is a must, and phones
> that have all these features (headsets, wired, and Caller ID) tend to
> be more expensive business models.

> This is the hack I thought of to let me use a cheap Wal*Mart wired
> phone with a headset. Simply wire a connection between the coiled
> handset cord and my headset. There are 4 connectors on the coiled
> handset cord, one for talking, one for listening, and a ground each.
> My headset has a 1/8" male stereo jack at the end. The part furtherst
> from the tip would take both the ground wires, and then I just have to
> find which is the mike, and which is the earpiece.

> Then I have to find out what the 4 wires in the coiled handset cord
> are and connect them correctly. Is there any reason this won't work?
> Any good ideas on how to best make the connection? Thanks.

I tried lots of different combinations connections, but I couldn't get
the headset to work. I know phone wiring is pretty funky, so maybe
the whole concept is flawed. Radio Shack has a $22 device that lets
you add a headset to any phone. It takes batteries, so maybe I am
missing a power source when I just hook it up directly, or maybe some
modification to the circuit needs to be done.

After cutting the coiled cord that goes to the handset, I have a red,
yellow, black and green wire. I think the red and green go to the
handset speaker and the black and yellow go to the mouthpiece. I
think green is ground, and I am guessing black is ground, but I don't
have any good reason for that. Googling the subject led me to a lot
of information on the wiring between the phone and the central switch,
but nothing specific to the wiring between the phone and handset.
This is an example of what I found:

It seems to contradict what I found yesterday, so I'll try a different

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