![](/images/new-backgrounds/1310117/310117327x1.webp)
Making Calls
Using a Headset
The 6757i CT accepts headsets through the modular RJ22 jack on the back of the phone. Contact your telephone equipment retailer or distributor to purchase a compatible headset.
Note: Customers should read and observe all safety recommendations contained in headset operating guides when using any headset.
Advanced Volume Controls for the Headset Mic
On the 6757i CT, there are 3 options for the headset microphone volume. For more information about the headset microphone, see “Headset Mic Volume” on page 35.
IP Phone UI
To change this volume:
1.Press to enter the Options list.
2.Select Preferences and press Select.
3.Use 2 to scroll down to Set Audio and press Select.
4.Press 2 to scroll down to Headset/Mic Volume and press Select.
5.Press 2 to scroll down to headset/mic volume and press Select.
6.Use 2 to scroll down the list to select your desired volume.
7.Press Enter to save the setting.
8.Press Done to save changes and exit.
9.If you do not wish to save changes, press Cancel to return to the previous screen.
Note: By default, the volume for the headset microphone is set to medium.
To Make and Receive Calls Using a Headset
IP Phone UI
1.Ensure that you have selected a headset audio mode by accessing the Options list (under option
2.Plug the headset into the jack.
3. Press the key to obtain a dial tone or to answer an incoming call. Depending on the audio mode selected from the options menu, a dial tone or an incoming call is received on either the headset or the handsfree speakerphone.
4. Press the key to end the call.
154 | Model 6757i CT IP Phone User Guide |