3) Please remove the EHS cord from the AUX port of the Headset's Base.
Let’s test a sound.
1) Hook ON the HANDSET of your DESK phone. (Make No calling state)
2) Hook On the Headset, No call state. The 2nd light of the Base turned OFF.
3) Hook Off the Headset -> Press Call button on the headset. It will turn ON the
2nd light of the Base. It will be in talking state.
4) While listening to any sound from the headset, Hook Off the HANDSET of your
DESK phone and dial calling to someone. The HANDSET simply is lifted off to
active a phone call. Try talking to the other person with the headset.
If you hear a sound, the headset port on your Desk phone has proven to be
broken. Therefore, the headset is not a problem.