People can't hear me...is there a setting we might adjust to un mute?

Press the mute button again. If that doesn't work, then press the volume-up button until you can hear the popping noise of the volume adjustment.

Check if the microphone is not muted. The mute button is at the top left of the keypad when a call is being received or made. If the mike is not muted, then try the following steps:
I. Switch on phone with SIM Card.
2. Select Menu.
3. Select Settings.
4. Select Call.
5. Select Hearing Aid.
6. Set Hearing Aid to OFF. And that should solve the problem. If this does not work then the microphone might be damaged and may need to be changed.

Please see the link below for the User's Guide.

• Headset is muted. Long press (3 sec.) the volume down button on headset to unmute the microphone. See page 16.
• Improper positioning of voice tube. Try various other positions.
• Voice tube may be clogged. Remove voice tube and test to see if callers can hear you without it. If they can, then replace the clogged voice tube. See page 18.
• Speaking volume is too low. Increase the speaking volume by
adjusting the speaking volume minor adjust buttons on the base unit as described on page 16. If the volume is still too low, select another speaking volume major adjust setting as described on page 16.
• Incorrect configuration dial setting for your phone. Try other
phone configuration dial settings on the base unit. Ensure the
selected number is in line with the position indicator. See page 14.

Plantronics CS70 User's Guide

Good luck from Headsets Direct!

Using a microphone with computer

To use any microphone with your computer you will need to enable it in control panel. The following instructions are for Windows XP but are broadly similar for Vista and Win7

Click START, CONTROL PANEL, SOUNDS & AUDIO DEVICES

Click VOICE

In Sounds & Audio Devices Properties window locate SOUND PLAYBACK box. Click the VOLUME button. Make sure that there is not a check-mark in the MUTE box against microphone in the list of devices and that the volume slider is at the top of the scale.

Make sure the MUTE ALL box isn't checked before closing the window.

Now click the VOLUME button in the SOUND RECORDING BOX. Here SELECT microphone as an input source for recording (as opposed to un-checking mute in the playback controls).

NOTE if your microphone is not listed in the 2 sets of volume controls click OPTIONS, PROPERTIES on the tool-bar and place a check against microphone in the list entitled 'show the following volume controls' and then click OK. Same applies for Internal mic.

That should be it.

To adjust audio volume generally.

Under VOLUME tab adjust Device Volume as necessary. Also (under Loudpeaker Settings) click Speaker Volume and adjust slider to suit.

You might put a check mark in the box to show the volume control on the Task Bar so you can go straight to it to make adjustments in the future.

For you to un-mute the inbuilt microphone on your Laptop follow the procedure given below.

• Left Double Click on the sound icon present in the system tray. (Bottom left of your Screen)
• Un-chech the box for the MUTE option in the Mic-in Volume section.

This should enable your Mic and you the laptop will be able to hear you. Don't forget to rate the solution.

To toggle your headset's muting fuction on and off, press both volume keys. By the way, you can download its user guide from this location.
Cheers! Carlos

Goto controll panel, and look for the speaker icon(sounds) click on recording devices then click on the microphone icon at the bottom go into properties, you can adjust everything there, also you can go into configure and adjust settings. hope this helps.

The first thing I would do is check to see if any of your speaker settings are muted. You can check this by either double-clicking on the speaker icon by the clock, or by going into the control panel and opening up "Sounds and Audio Devices". Then, click on advanced. Un-Mute any muted devices.

I looked at the manual, and there doesn't seem to be a way to un-mute the mic. On other models, the Menu button is also the Mute button.. The only thing I saw that might be the cause is the following:

If this only happens on one of the handsets, did you register that handset? It must sit in the base cradle for 20 seconds before it's registered:

NOTE: In case of a power failure lasting more than 5 minutes, you must put both handsets on the main base cradle for 20 seconds to re-register.

I have the same issue with Uniden cordless DCX640 - the phone was working fine but it seems to be on mute