Support Centre

Unable to hear anyone on my Yealink Phone

Matthew Fletcher


You are unable to hear anyone on the phone, or your call sounds distorted or crackly.


There can be a few troubleshooting steps for this, we have listed the most common below:

Checking your cables

One important first step is to ensure that your phone and any headsets are plugged into the correct ports. You may have a loose cable in either your phone or the headset which may be causing the issues on your phone.

Reconnect the headset

If you are using a USB or wired headset you may need to reconnect this device. Unplug it from your phone and wait for about ten seconds before plugging this back in. Allow a moment for your phone to finalise the connection and place a test call to see if this is now working as expected.

Disable SIP ALG

One issue that could be affecting your phones is a setting on your router called SIP ALG. This setting is a tool that your router uses to inspect SIP messages used in VoIP communications and transforms these messages which may result in some issues on the network. We have a guide here which goes over a few common routers and the steps to switch this off.

Need help?

If the above steps did not resolve your issue, you can raise a case with our team by clicking here. We may verify that you have completed the above steps, so don't forget to try!

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