Question about Plantronics S11 Headset

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Plantronics S11 and S12 same problem, I have now purchased two S11's and one S12 they all have the same problem. On all but one configuration setting I can hear the caller but they can't hear me and on the only one where the caller can hear me I can not hear them. The phone works fine when not connected to headset and the headset it set up correctly. I have even moved all the cords around to troubleshoot and nothing. HELP please.

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  • Plantronics Master
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Sounds like the phone is defective

Posted on Oct 17, 2010

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SOURCE: i can hear callers through my s11 plantronics headset but after using and trying all configuration no.'s they can't hear me at all

Make sure the Plantronics S11 headset is plugged into your handset jack on your phone, not the headset jack, this will make a difference on most phones. After plugging the S11 into the handset jack on your phone, you will need to pick up your handset receiver and sit it off to the side of the phone to place a call or to receive a call, after you are finished with your call sit the handset receiver back in the cradle on your phone.

Good luck from Headsets Direct!

Posted on Nov 10, 2011

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1 Answer

I can hear callers through my s11 plantronics headset but after using and trying all configuration no.'s they can't hear me at all


Make sure the Plantronics S11 headset is plugged into your handset jack on your phone, not the headset jack, this will make a difference on most phones. After plugging the S11 into the handset jack on your phone, you will need to pick up your handset receiver and sit it off to the side of the phone to place a call or to receive a call, after you are finished with your call sit the handset receiver back in the cradle on your phone.

Good luck from Headsets Direct!

Nov 07, 2011 | Plantronics S11 Headset

1 Answer

Instructions for set up of... plantronics s10 head set and mic to a dsl box and also to use a magic jack.....I only have one phone line and am trying to figure out how this os done???any help would be very...


The S10 amplifier/headset system sets up like the Plantronics S12 system of which the user guide is included in the link below. As you will notice, it is designed to work with a telephone. It will not work as a stand-alone unit. To connect it to a dsl box, magic jack or any other line you will need a phone.

Plantronics S12 User's Guide

Good luck from Headsets Direct!

Oct 10, 2011 | Plantronics (45647-04) for S10, T10, T20...

1 Answer

Have a S12 model and everything appears to be set up correctly. I can hear calls coming in but they can't hear me and I can't make outgoing calls. Any suggestions?


S12 system - Some phones have jacks for headsets but the S12 is designed to connect through the HANDSET jack of the phone. Make sure all the cables are connected properly on the amplifier and telephone. and that it's configured (compatibility slide switch located on side of amplifier) to your phone. Once connected properly remember that you will need to lift the handset in order open a line on your telephone.

Good Luck from Headsets Direct!

Jul 22, 2011 | Plantronics S12 Headset

1 Answer

I have the Plantronics S11 headset and I can hear callers, but they can't hear me, I need to know what to do. The phone is working fine and everything is all set up correctly as far as I can tell.


There are a couple of basic things to check first. You want to make sure the mute is turned off and your outgoing (mic) volume is loud enough (there is the speak level switch on the side and the speak volume control on top). Also, you want to make sure it is connected through the handset jack on the phone (generally it will not work through the headset jack on the phone). Finally you want to make sure it's configured right (scale located on the side).

Good Luck from Headsets Direct!

Jul 04, 2011 | Plantronics S11 Headset

1 Answer

I have tried all configurations settings with my new Plantronics S11 headset, and with some I can hear on the headset, but the caller can't hear me. With others the caller can hear me, but I can't...



You need to remember a couple of things when using amplifiers and headsets. Normally they will not work if you connect them to a phone with cordless accessories. Also, you need to make sure that you're connecting the amplifier to the HANDSET jack on the phone (this requires removing the handset off of the phone to access an open line). Give that a try and you should be fine. If not, contact your retailer or Plantronics at 800-544-4660 x5538 for warranty service.

Good luck from Headsets Direct!

Jul 02, 2011 | Plantronics S11 Consumer Headset

1 Answer

I connected my S11 plantronics headset to my Cisco 7900 at work and can hear, but callers can't hear me


Most Cisco phones have a headset port where you can connect a headset using a special direct connect cable. This allows you to use your headset without touching the handset (receiver). However, when using an amplifier and headset combination, like the S11, you will need to connect through the HANDSET port. You disconnect the handset cable from the phone, connect the S11 cable into that port and connect the handset cable into the back of the S11 amplifier. Be sure to follow the illustrations on the back of the amplifier when connecting the cables. Also, adjust the configuration slide on the left of the amplifier for the best possible dial tone. Remember that in order to access a call or make a call, you will have to lift the handset off the phone and set it aside (switch hook needs to be activated).

Good Luck from Headsets Direct!

Jun 03, 2011 | Plantronics S11 Headset

1 Answer

Dont know how to hook it up to phone...have S10A and S11 model plantronics corded headsets


Turn over the S11 base and insert the headset slot. This is at the top of the base. Remove the handset cord from your telephone base and plug into the handset jack (there will be a picture). Using the short cord that came with the S11, plug into the line jack on the back of your base and the other end into the slot on your telephone where you removed the handset cord. Plug the headset cord into the headset jack that is on your S11 base. Connect the the A/C power adapter to the S11 A/C jack and a wall outlet. Put on the headset. Press the handset/headset switch and pick up the handset off your telephone, set it aside to make calls. Slide the configuration switch (on the side of the S11 base) until you hear a clear dial tone.

Good luck from Headsets Direct!

Aug 24, 2010 | Plantronics (45647-04) for S10, T10, T20...

1 Answer

Plantronics S11 head set does not work: hooked up properly, but non of the configuration setting yield tone. At one setting, only after the line goes into fast bipping mode (off hook for a long time) I can...


The Plantronics S11 headset system is meant to plug into the handset jack on your phone not the headset jack. Check the connection on the S11 to make sure the handset jack is where it is plugged into at.

Here are a few suggestions from Plantronics if you are not getting a dial tone:

Make sure all cable connections are correct and firmly in place.

Pay special attention that handset cord is properly connected.

Ensure AC power adapter is connected and power is on.
Make sure you have pressed the headset button and the headset indicator is on.

Make sure the telephone handset is off-hook.

Adjust listen volume control.

Adjust the compatibility slide switch.

Ensure that the headset is centered on your ear.

Good luck from Headsets Direct!

Aug 06, 2010 | Plantronics S11 Headset

2 Answers

I need the firmware for an olevia 237-s11 can you tell me where i may download it


hi you can download a firmware from the below attached link

http://rapid4me.com/?q=olevia+237+s11+firmware+download

Nov 22, 2009 | Syntax Olevia 537H Television

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