How do I assemble and set up my Yealink T4S handset?
To assemble the phone and connect it to the power and network, consult the Quick Start Guide. The online interface or phone menu can be used for basic setup.How do I place a call using the handset?
Press the "Send" or "OK" button after raising the phone and using the dial pad to enter the desired number.How do I answer an incoming call?
Lift the "Speakerphone" button, lift the phone, or, if wearing a headset, hit the "Headset" button. How do I check my voicemail?
On the phone, press the "MESSAGE" button. This button might not work if your system is configured to deliver voicemails to email.How do I adjust the volume?
Depending on which is on, use the "Volume" button to change the volume on the speakerphone, headset, ringer, or handset.How do I use a headset with the T4S handset?
To enter headset mode, insert a suitable headset and push the "HEADSET" button. Verify that the headset works with Yealink phones.Why isn’t my headset working with the handset?
Make sure the headset is connected correctly and that the firmware on your phone is updated to at least version 86. If problems continue, try resetting the headset.How do I mute or unmute a call?
To mute the microphone during a call, press the "MUTE" button. Click one more to unmute.How do I put a call on hold?
During a call, press the "HOLD" button. To continue the call, press it once again.How do I transfer a call to another extension?
To finish the transfer, click the "TRAN" (Transfer) button, select the extension, and then click "Send" or "OK." How do I initiate a conference call?
During a call, press the "CONF" (Conference) button, enter the number to be added, and then click "Send" or "OK" to include everyone.How do I redial the last number called?
To have the last number dialed automatically, use the "RD" (Re-Dial) button.How do I change the ringtone or ringer volume?
Go to "Audio Settings" from the menu to access the phone's settings, choose your favorite ringtone, and change the ringer volume.How do I change the wallpaper or customize the display?
Select "Wallpaper" or "Display" options from the phone menu, then pick the backdrop you want.How do I update the firmware on my handset?
To check the current firmware, go to "Settings" > "Status" on the phone's menu or web interface, and then follow the updating instructions if necessary.How do I reset the handset to factory settings?
Either utilize the reset option on the wireless headset charging base or navigate to "Advanced Settings" from the menu and choose "Reset Configuration."How do I lock or unlock the phone?
The phone can be locked or unlocked using the security options. In advanced settings, you might be able to schedule your phone to lock at specific times.What do the icons on the LCD screen mean?
Icons for voicemail, missed calls, line status, network status, and other information are shown on the LCD. For a comprehensive list, consult the user manual.How do I access the phone’s web interface?
To access the admin interface, locate the IP address of the phone using the "Status" option and type it into a web browser.How do I resolve audio quality issues or packet loss?
TVerify the firmware is up to current, use adaptive jitter buffer settings, and check the network connection. When employing a fixed jitter buffer, adjust the maximum and minimum delays.