20 Most Recent GN Netcom (9120-48) Wireless Headset Questions & Answers

not a radio communications issue

I was also experiencing the same problem (also after a power failure / storm) -- apparently good battery charge, connections ok, etc. I then tried removing the battery from the headset itself, waited 30 seconds, and then reinstalled the battery. This seems to have resolved the problem.

It is fairly easy to open the clamshell, but you will need a very fine Phillips screwdriver to remove the battery hold-in (it's really not a hold-down, it just keeps the battery in place. Reassemble the same way -- be sure to keep positive to positive and negative to negative.

Dump it

I had this problem a few months ago, make sure the small wheel on the side is set on A. (if you look closly at the wheel there are very small and hard to see letters on there.) this should get rid of the buzzing.

Transmit volume adjustment
Adjust the volume of transmitted sound according to personal preference.
To adjust the volume:
1. Make a telephone call and ask the person you are calling to assist
you.
2. Press the +/– buttons on the headset simultaneously for 2 seconds.
A beep will indicate when 2 seconds has passed.
3. Adjust the volume level by pressing the + or – button.
4. When the person you are speaking with fi nds the volume of your
voice appropriate, press the +/– buttons simultaneously for 2
seconds. This setting is now stored in the headset.

A Copy of the manual is avaliable at:

http://www.onedirect.es/files/GN%20Netcom-ES/GN%20Netcom%209120%20manual.pdf

You must have Adobe Reader to view it and the instructions are on page PDF page 3 or manual page 6. Adobe Reader is avaliable for download at:

http://www.adobe.com/products/acrobat/readstep2.html

Actually what she was hearing was the ring tone in her headset when a incoming call comes in. The sensitivity on the handset lifter that picks up the ringing on a incoming call was set all the way up and was picking up interferance from the headset base as they have the tendency to buzz when placed right next to the phone. I just turned down the ringer sensitivity with the adjustment on the handset lifter and that took care of the problem. Thanks for your time.

I had a 9120 for years, great headset. Change the compatibility wheel and levels on the unit per the instruction book link below. https://www.jabra.com/_/media/Product-Documentation/Jabra-GN9120-Series/User-Manuals/User_Manual_Jabra_GN9120-GN9125_EN.pdf

If you haven't already tried this, disconnect the base unit from the computer and then see if the problem continues. If it does, there is likely a fault in the electronic switching in the base unit. If the problem doesn't continue, then it could be an intermittent switch on the base unit. You could try pressing and releasing the computer switch on the base unit multiple times. Maybe even lightly pry it up with your fingernail to make sure it's not stuck down. From my understanding any phone connection will override computer audio, so while on a phone call even if you computer beeps, it should not switch to computer audio. Hopefully this will narrow down the issue.

Many reasons that could be happening. Could need re pairingwith docking station, might need to play with the compatibility dial.